git_store.rs

   1mod conflict_set;
   2pub mod git_traversal;
   3
   4use crate::{
   5    ProjectEnvironment, ProjectItem, ProjectPath,
   6    buffer_store::{BufferStore, BufferStoreEvent},
   7    worktree_store::{WorktreeStore, WorktreeStoreEvent},
   8};
   9use anyhow::{Context as _, Result, anyhow, bail};
  10use askpass::AskPassDelegate;
  11use buffer_diff::{BufferDiff, BufferDiffEvent};
  12use client::ProjectId;
  13use collections::HashMap;
  14pub use conflict_set::{ConflictRegion, ConflictSet, ConflictSetSnapshot, ConflictSetUpdate};
  15use fs::Fs;
  16use futures::{
  17    FutureExt, StreamExt,
  18    channel::{mpsc, oneshot},
  19    future::{self, Shared},
  20    stream::FuturesOrdered,
  21};
  22use git::{
  23    BuildPermalinkParams, GitHostingProviderRegistry, WORK_DIRECTORY_REPO_PATH,
  24    blame::Blame,
  25    parse_git_remote_url,
  26    repository::{
  27        Branch, CommitDetails, CommitDiff, CommitFile, CommitOptions, DiffType, FetchOptions,
  28        GitRepository, GitRepositoryCheckpoint, PushOptions, Remote, RemoteCommandOutput, RepoPath,
  29        ResetMode, UpstreamTrackingStatus,
  30    },
  31    status::{
  32        FileStatus, GitSummary, StatusCode, TrackedStatus, UnmergedStatus, UnmergedStatusCode,
  33    },
  34};
  35use gpui::{
  36    App, AppContext, AsyncApp, Context, Entity, EventEmitter, SharedString, Subscription, Task,
  37    WeakEntity,
  38};
  39use language::{
  40    Buffer, BufferEvent, Language, LanguageRegistry,
  41    proto::{deserialize_version, serialize_version},
  42};
  43use parking_lot::Mutex;
  44use postage::stream::Stream as _;
  45use rpc::{
  46    AnyProtoClient, TypedEnvelope,
  47    proto::{self, FromProto, SSH_PROJECT_ID, ToProto, git_reset, split_repository_update},
  48};
  49use serde::Deserialize;
  50use std::{
  51    cmp::Ordering,
  52    collections::{BTreeSet, VecDeque},
  53    future::Future,
  54    mem,
  55    ops::Range,
  56    path::{Path, PathBuf},
  57    sync::{
  58        Arc,
  59        atomic::{self, AtomicU64},
  60    },
  61    time::Instant,
  62};
  63use sum_tree::{Edit, SumTree, TreeSet};
  64use text::{Bias, BufferId};
  65use util::{ResultExt, debug_panic, post_inc};
  66use worktree::{
  67    File, PathChange, PathKey, PathProgress, PathSummary, PathTarget, ProjectEntryId,
  68    UpdatedGitRepositoriesSet, UpdatedGitRepository, Worktree,
  69};
  70
  71pub struct GitStore {
  72    state: GitStoreState,
  73    buffer_store: Entity<BufferStore>,
  74    worktree_store: Entity<WorktreeStore>,
  75    repositories: HashMap<RepositoryId, Entity<Repository>>,
  76    active_repo_id: Option<RepositoryId>,
  77    #[allow(clippy::type_complexity)]
  78    loading_diffs:
  79        HashMap<(BufferId, DiffKind), Shared<Task<Result<Entity<BufferDiff>, Arc<anyhow::Error>>>>>,
  80    diffs: HashMap<BufferId, Entity<BufferGitState>>,
  81    shared_diffs: HashMap<proto::PeerId, HashMap<BufferId, SharedDiffs>>,
  82    _subscriptions: Vec<Subscription>,
  83}
  84
  85#[derive(Default)]
  86struct SharedDiffs {
  87    unstaged: Option<Entity<BufferDiff>>,
  88    uncommitted: Option<Entity<BufferDiff>>,
  89}
  90
  91struct BufferGitState {
  92    unstaged_diff: Option<WeakEntity<BufferDiff>>,
  93    uncommitted_diff: Option<WeakEntity<BufferDiff>>,
  94    conflict_set: Option<WeakEntity<ConflictSet>>,
  95    recalculate_diff_task: Option<Task<Result<()>>>,
  96    reparse_conflict_markers_task: Option<Task<Result<()>>>,
  97    language: Option<Arc<Language>>,
  98    language_registry: Option<Arc<LanguageRegistry>>,
  99    conflict_updated_futures: Vec<oneshot::Sender<()>>,
 100    recalculating_tx: postage::watch::Sender<bool>,
 101
 102    /// These operation counts are used to ensure that head and index text
 103    /// values read from the git repository are up-to-date with any hunk staging
 104    /// operations that have been performed on the BufferDiff.
 105    ///
 106    /// The operation count is incremented immediately when the user initiates a
 107    /// hunk stage/unstage operation. Then, upon finishing writing the new index
 108    /// text do disk, the `operation count as of write` is updated to reflect
 109    /// the operation count that prompted the write.
 110    hunk_staging_operation_count: usize,
 111    hunk_staging_operation_count_as_of_write: usize,
 112
 113    head_text: Option<Arc<String>>,
 114    index_text: Option<Arc<String>>,
 115    head_changed: bool,
 116    index_changed: bool,
 117    language_changed: bool,
 118}
 119
 120#[derive(Clone, Debug)]
 121enum DiffBasesChange {
 122    SetIndex(Option<String>),
 123    SetHead(Option<String>),
 124    SetEach {
 125        index: Option<String>,
 126        head: Option<String>,
 127    },
 128    SetBoth(Option<String>),
 129}
 130
 131#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
 132enum DiffKind {
 133    Unstaged,
 134    Uncommitted,
 135}
 136
 137enum GitStoreState {
 138    Local {
 139        next_repository_id: Arc<AtomicU64>,
 140        downstream: Option<LocalDownstreamState>,
 141        project_environment: Entity<ProjectEnvironment>,
 142        fs: Arc<dyn Fs>,
 143    },
 144    Ssh {
 145        upstream_client: AnyProtoClient,
 146        upstream_project_id: ProjectId,
 147        downstream: Option<(AnyProtoClient, ProjectId)>,
 148    },
 149    Remote {
 150        upstream_client: AnyProtoClient,
 151        upstream_project_id: ProjectId,
 152    },
 153}
 154
 155enum DownstreamUpdate {
 156    UpdateRepository(RepositorySnapshot),
 157    RemoveRepository(RepositoryId),
 158}
 159
 160struct LocalDownstreamState {
 161    client: AnyProtoClient,
 162    project_id: ProjectId,
 163    updates_tx: mpsc::UnboundedSender<DownstreamUpdate>,
 164    _task: Task<Result<()>>,
 165}
 166
 167#[derive(Clone, Debug)]
 168pub struct GitStoreCheckpoint {
 169    checkpoints_by_work_dir_abs_path: HashMap<Arc<Path>, GitRepositoryCheckpoint>,
 170}
 171
 172#[derive(Clone, Debug, PartialEq, Eq)]
 173pub struct StatusEntry {
 174    pub repo_path: RepoPath,
 175    pub status: FileStatus,
 176}
 177
 178impl StatusEntry {
 179    fn to_proto(&self) -> proto::StatusEntry {
 180        let simple_status = match self.status {
 181            FileStatus::Ignored | FileStatus::Untracked => proto::GitStatus::Added as i32,
 182            FileStatus::Unmerged { .. } => proto::GitStatus::Conflict as i32,
 183            FileStatus::Tracked(TrackedStatus {
 184                index_status,
 185                worktree_status,
 186            }) => tracked_status_to_proto(if worktree_status != StatusCode::Unmodified {
 187                worktree_status
 188            } else {
 189                index_status
 190            }),
 191        };
 192
 193        proto::StatusEntry {
 194            repo_path: self.repo_path.as_ref().to_proto(),
 195            simple_status,
 196            status: Some(status_to_proto(self.status)),
 197        }
 198    }
 199}
 200
 201impl TryFrom<proto::StatusEntry> for StatusEntry {
 202    type Error = anyhow::Error;
 203
 204    fn try_from(value: proto::StatusEntry) -> Result<Self, Self::Error> {
 205        let repo_path = RepoPath(Arc::<Path>::from_proto(value.repo_path));
 206        let status = status_from_proto(value.simple_status, value.status)?;
 207        Ok(Self { repo_path, status })
 208    }
 209}
 210
 211impl sum_tree::Item for StatusEntry {
 212    type Summary = PathSummary<GitSummary>;
 213
 214    fn summary(&self, _: &<Self::Summary as sum_tree::Summary>::Context) -> Self::Summary {
 215        PathSummary {
 216            max_path: self.repo_path.0.clone(),
 217            item_summary: self.status.summary(),
 218        }
 219    }
 220}
 221
 222impl sum_tree::KeyedItem for StatusEntry {
 223    type Key = PathKey;
 224
 225    fn key(&self) -> Self::Key {
 226        PathKey(self.repo_path.0.clone())
 227    }
 228}
 229
 230#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
 231pub struct RepositoryId(pub u64);
 232
 233#[derive(Clone, Debug, Default, PartialEq, Eq)]
 234pub struct MergeDetails {
 235    pub conflicted_paths: TreeSet<RepoPath>,
 236    pub message: Option<SharedString>,
 237    pub heads: Vec<Option<SharedString>>,
 238}
 239
 240#[derive(Clone, Debug, PartialEq, Eq)]
 241pub struct RepositorySnapshot {
 242    pub id: RepositoryId,
 243    pub statuses_by_path: SumTree<StatusEntry>,
 244    pub work_directory_abs_path: Arc<Path>,
 245    pub branch: Option<Branch>,
 246    pub head_commit: Option<CommitDetails>,
 247    pub scan_id: u64,
 248    pub merge: MergeDetails,
 249    pub remote_origin_url: Option<String>,
 250    pub remote_upstream_url: Option<String>,
 251}
 252
 253type JobId = u64;
 254
 255#[derive(Clone, Debug, PartialEq, Eq)]
 256pub struct JobInfo {
 257    pub start: Instant,
 258    pub message: SharedString,
 259}
 260
 261pub struct Repository {
 262    this: WeakEntity<Self>,
 263    snapshot: RepositorySnapshot,
 264    commit_message_buffer: Option<Entity<Buffer>>,
 265    git_store: WeakEntity<GitStore>,
 266    // For a local repository, holds paths that have had worktree events since the last status scan completed,
 267    // and that should be examined during the next status scan.
 268    paths_needing_status_update: BTreeSet<RepoPath>,
 269    job_sender: mpsc::UnboundedSender<GitJob>,
 270    active_jobs: HashMap<JobId, JobInfo>,
 271    job_id: JobId,
 272    askpass_delegates: Arc<Mutex<HashMap<u64, AskPassDelegate>>>,
 273    latest_askpass_id: u64,
 274}
 275
 276impl std::ops::Deref for Repository {
 277    type Target = RepositorySnapshot;
 278
 279    fn deref(&self) -> &Self::Target {
 280        &self.snapshot
 281    }
 282}
 283
 284#[derive(Clone)]
 285pub enum RepositoryState {
 286    Local {
 287        backend: Arc<dyn GitRepository>,
 288        environment: Arc<HashMap<String, String>>,
 289    },
 290    Remote {
 291        project_id: ProjectId,
 292        client: AnyProtoClient,
 293    },
 294}
 295
 296#[derive(Clone, Debug)]
 297pub enum RepositoryEvent {
 298    Updated { full_scan: bool, new_instance: bool },
 299    MergeHeadsChanged,
 300}
 301
 302#[derive(Clone, Debug)]
 303pub struct JobsUpdated;
 304
 305#[derive(Debug)]
 306pub enum GitStoreEvent {
 307    ActiveRepositoryChanged(Option<RepositoryId>),
 308    RepositoryUpdated(RepositoryId, RepositoryEvent, bool),
 309    RepositoryAdded(RepositoryId),
 310    RepositoryRemoved(RepositoryId),
 311    IndexWriteError(anyhow::Error),
 312    JobsUpdated,
 313    ConflictsUpdated,
 314}
 315
 316impl EventEmitter<RepositoryEvent> for Repository {}
 317impl EventEmitter<JobsUpdated> for Repository {}
 318impl EventEmitter<GitStoreEvent> for GitStore {}
 319
 320pub struct GitJob {
 321    job: Box<dyn FnOnce(RepositoryState, &mut AsyncApp) -> Task<()>>,
 322    key: Option<GitJobKey>,
 323}
 324
 325#[derive(PartialEq, Eq)]
 326enum GitJobKey {
 327    WriteIndex(RepoPath),
 328    ReloadBufferDiffBases,
 329    RefreshStatuses,
 330    ReloadGitState,
 331}
 332
 333impl GitStore {
 334    pub fn local(
 335        worktree_store: &Entity<WorktreeStore>,
 336        buffer_store: Entity<BufferStore>,
 337        environment: Entity<ProjectEnvironment>,
 338        fs: Arc<dyn Fs>,
 339        cx: &mut Context<Self>,
 340    ) -> Self {
 341        Self::new(
 342            worktree_store.clone(),
 343            buffer_store,
 344            GitStoreState::Local {
 345                next_repository_id: Arc::new(AtomicU64::new(1)),
 346                downstream: None,
 347                project_environment: environment,
 348                fs,
 349            },
 350            cx,
 351        )
 352    }
 353
 354    pub fn remote(
 355        worktree_store: &Entity<WorktreeStore>,
 356        buffer_store: Entity<BufferStore>,
 357        upstream_client: AnyProtoClient,
 358        project_id: ProjectId,
 359        cx: &mut Context<Self>,
 360    ) -> Self {
 361        Self::new(
 362            worktree_store.clone(),
 363            buffer_store,
 364            GitStoreState::Remote {
 365                upstream_client,
 366                upstream_project_id: project_id,
 367            },
 368            cx,
 369        )
 370    }
 371
 372    pub fn ssh(
 373        worktree_store: &Entity<WorktreeStore>,
 374        buffer_store: Entity<BufferStore>,
 375        upstream_client: AnyProtoClient,
 376        cx: &mut Context<Self>,
 377    ) -> Self {
 378        Self::new(
 379            worktree_store.clone(),
 380            buffer_store,
 381            GitStoreState::Ssh {
 382                upstream_client,
 383                upstream_project_id: ProjectId(SSH_PROJECT_ID),
 384                downstream: None,
 385            },
 386            cx,
 387        )
 388    }
 389
 390    fn new(
 391        worktree_store: Entity<WorktreeStore>,
 392        buffer_store: Entity<BufferStore>,
 393        state: GitStoreState,
 394        cx: &mut Context<Self>,
 395    ) -> Self {
 396        let _subscriptions = vec![
 397            cx.subscribe(&worktree_store, Self::on_worktree_store_event),
 398            cx.subscribe(&buffer_store, Self::on_buffer_store_event),
 399        ];
 400
 401        GitStore {
 402            state,
 403            buffer_store,
 404            worktree_store,
 405            repositories: HashMap::default(),
 406            active_repo_id: None,
 407            _subscriptions,
 408            loading_diffs: HashMap::default(),
 409            shared_diffs: HashMap::default(),
 410            diffs: HashMap::default(),
 411        }
 412    }
 413
 414    pub fn init(client: &AnyProtoClient) {
 415        client.add_entity_request_handler(Self::handle_get_remotes);
 416        client.add_entity_request_handler(Self::handle_get_branches);
 417        client.add_entity_request_handler(Self::handle_get_default_branch);
 418        client.add_entity_request_handler(Self::handle_change_branch);
 419        client.add_entity_request_handler(Self::handle_create_branch);
 420        client.add_entity_request_handler(Self::handle_git_init);
 421        client.add_entity_request_handler(Self::handle_push);
 422        client.add_entity_request_handler(Self::handle_pull);
 423        client.add_entity_request_handler(Self::handle_fetch);
 424        client.add_entity_request_handler(Self::handle_stage);
 425        client.add_entity_request_handler(Self::handle_unstage);
 426        client.add_entity_request_handler(Self::handle_stash);
 427        client.add_entity_request_handler(Self::handle_stash_pop);
 428        client.add_entity_request_handler(Self::handle_commit);
 429        client.add_entity_request_handler(Self::handle_reset);
 430        client.add_entity_request_handler(Self::handle_show);
 431        client.add_entity_request_handler(Self::handle_load_commit_diff);
 432        client.add_entity_request_handler(Self::handle_checkout_files);
 433        client.add_entity_request_handler(Self::handle_open_commit_message_buffer);
 434        client.add_entity_request_handler(Self::handle_set_index_text);
 435        client.add_entity_request_handler(Self::handle_askpass);
 436        client.add_entity_request_handler(Self::handle_check_for_pushed_commits);
 437        client.add_entity_request_handler(Self::handle_git_diff);
 438        client.add_entity_request_handler(Self::handle_open_unstaged_diff);
 439        client.add_entity_request_handler(Self::handle_open_uncommitted_diff);
 440        client.add_entity_message_handler(Self::handle_update_diff_bases);
 441        client.add_entity_request_handler(Self::handle_get_permalink_to_line);
 442        client.add_entity_request_handler(Self::handle_blame_buffer);
 443        client.add_entity_message_handler(Self::handle_update_repository);
 444        client.add_entity_message_handler(Self::handle_remove_repository);
 445        client.add_entity_request_handler(Self::handle_git_clone);
 446    }
 447
 448    pub fn is_local(&self) -> bool {
 449        matches!(self.state, GitStoreState::Local { .. })
 450    }
 451
 452    pub fn shared(&mut self, project_id: u64, client: AnyProtoClient, cx: &mut Context<Self>) {
 453        match &mut self.state {
 454            GitStoreState::Ssh {
 455                downstream: downstream_client,
 456                ..
 457            } => {
 458                for repo in self.repositories.values() {
 459                    let update = repo.read(cx).snapshot.initial_update(project_id);
 460                    for update in split_repository_update(update) {
 461                        client.send(update).log_err();
 462                    }
 463                }
 464                *downstream_client = Some((client, ProjectId(project_id)));
 465            }
 466            GitStoreState::Local {
 467                downstream: downstream_client,
 468                ..
 469            } => {
 470                let mut snapshots = HashMap::default();
 471                let (updates_tx, mut updates_rx) = mpsc::unbounded();
 472                for repo in self.repositories.values() {
 473                    updates_tx
 474                        .unbounded_send(DownstreamUpdate::UpdateRepository(
 475                            repo.read(cx).snapshot.clone(),
 476                        ))
 477                        .ok();
 478                }
 479                *downstream_client = Some(LocalDownstreamState {
 480                    client: client.clone(),
 481                    project_id: ProjectId(project_id),
 482                    updates_tx,
 483                    _task: cx.spawn(async move |this, cx| {
 484                        cx.background_spawn(async move {
 485                            while let Some(update) = updates_rx.next().await {
 486                                match update {
 487                                    DownstreamUpdate::UpdateRepository(snapshot) => {
 488                                        if let Some(old_snapshot) = snapshots.get_mut(&snapshot.id)
 489                                        {
 490                                            let update =
 491                                                snapshot.build_update(old_snapshot, project_id);
 492                                            *old_snapshot = snapshot;
 493                                            for update in split_repository_update(update) {
 494                                                client.send(update)?;
 495                                            }
 496                                        } else {
 497                                            let update = snapshot.initial_update(project_id);
 498                                            for update in split_repository_update(update) {
 499                                                client.send(update)?;
 500                                            }
 501                                            snapshots.insert(snapshot.id, snapshot);
 502                                        }
 503                                    }
 504                                    DownstreamUpdate::RemoveRepository(id) => {
 505                                        client.send(proto::RemoveRepository {
 506                                            project_id,
 507                                            id: id.to_proto(),
 508                                        })?;
 509                                    }
 510                                }
 511                            }
 512                            anyhow::Ok(())
 513                        })
 514                        .await
 515                        .ok();
 516                        this.update(cx, |this, _| {
 517                            if let GitStoreState::Local {
 518                                downstream: downstream_client,
 519                                ..
 520                            } = &mut this.state
 521                            {
 522                                downstream_client.take();
 523                            } else {
 524                                unreachable!("unshared called on remote store");
 525                            }
 526                        })
 527                    }),
 528                });
 529            }
 530            GitStoreState::Remote { .. } => {
 531                debug_panic!("shared called on remote store");
 532            }
 533        }
 534    }
 535
 536    pub fn unshared(&mut self, _cx: &mut Context<Self>) {
 537        match &mut self.state {
 538            GitStoreState::Local {
 539                downstream: downstream_client,
 540                ..
 541            } => {
 542                downstream_client.take();
 543            }
 544            GitStoreState::Ssh {
 545                downstream: downstream_client,
 546                ..
 547            } => {
 548                downstream_client.take();
 549            }
 550            GitStoreState::Remote { .. } => {
 551                debug_panic!("unshared called on remote store");
 552            }
 553        }
 554        self.shared_diffs.clear();
 555    }
 556
 557    pub(crate) fn forget_shared_diffs_for(&mut self, peer_id: &proto::PeerId) {
 558        self.shared_diffs.remove(peer_id);
 559    }
 560
 561    pub fn active_repository(&self) -> Option<Entity<Repository>> {
 562        self.active_repo_id
 563            .as_ref()
 564            .map(|id| self.repositories[id].clone())
 565    }
 566
 567    pub fn open_unstaged_diff(
 568        &mut self,
 569        buffer: Entity<Buffer>,
 570        cx: &mut Context<Self>,
 571    ) -> Task<Result<Entity<BufferDiff>>> {
 572        let buffer_id = buffer.read(cx).remote_id();
 573        if let Some(diff_state) = self.diffs.get(&buffer_id)
 574            && let Some(unstaged_diff) = diff_state
 575                .read(cx)
 576                .unstaged_diff
 577                .as_ref()
 578                .and_then(|weak| weak.upgrade())
 579        {
 580            if let Some(task) =
 581                diff_state.update(cx, |diff_state, _| diff_state.wait_for_recalculation())
 582            {
 583                return cx.background_executor().spawn(async move {
 584                    task.await;
 585                    Ok(unstaged_diff)
 586                });
 587            }
 588            return Task::ready(Ok(unstaged_diff));
 589        }
 590
 591        let Some((repo, repo_path)) =
 592            self.repository_and_path_for_buffer_id(buffer.read(cx).remote_id(), cx)
 593        else {
 594            return Task::ready(Err(anyhow!("failed to find git repository for buffer")));
 595        };
 596
 597        let task = self
 598            .loading_diffs
 599            .entry((buffer_id, DiffKind::Unstaged))
 600            .or_insert_with(|| {
 601                let staged_text = repo.update(cx, |repo, cx| {
 602                    repo.load_staged_text(buffer_id, repo_path, cx)
 603                });
 604                cx.spawn(async move |this, cx| {
 605                    Self::open_diff_internal(
 606                        this,
 607                        DiffKind::Unstaged,
 608                        staged_text.await.map(DiffBasesChange::SetIndex),
 609                        buffer,
 610                        cx,
 611                    )
 612                    .await
 613                    .map_err(Arc::new)
 614                })
 615                .shared()
 616            })
 617            .clone();
 618
 619        cx.background_spawn(async move { task.await.map_err(|e| anyhow!("{e}")) })
 620    }
 621
 622    pub fn open_uncommitted_diff(
 623        &mut self,
 624        buffer: Entity<Buffer>,
 625        cx: &mut Context<Self>,
 626    ) -> Task<Result<Entity<BufferDiff>>> {
 627        let buffer_id = buffer.read(cx).remote_id();
 628
 629        if let Some(diff_state) = self.diffs.get(&buffer_id)
 630            && let Some(uncommitted_diff) = diff_state
 631                .read(cx)
 632                .uncommitted_diff
 633                .as_ref()
 634                .and_then(|weak| weak.upgrade())
 635        {
 636            if let Some(task) =
 637                diff_state.update(cx, |diff_state, _| diff_state.wait_for_recalculation())
 638            {
 639                return cx.background_executor().spawn(async move {
 640                    task.await;
 641                    Ok(uncommitted_diff)
 642                });
 643            }
 644            return Task::ready(Ok(uncommitted_diff));
 645        }
 646
 647        let Some((repo, repo_path)) =
 648            self.repository_and_path_for_buffer_id(buffer.read(cx).remote_id(), cx)
 649        else {
 650            return Task::ready(Err(anyhow!("failed to find git repository for buffer")));
 651        };
 652
 653        let task = self
 654            .loading_diffs
 655            .entry((buffer_id, DiffKind::Uncommitted))
 656            .or_insert_with(|| {
 657                let changes = repo.update(cx, |repo, cx| {
 658                    repo.load_committed_text(buffer_id, repo_path, cx)
 659                });
 660
 661                cx.spawn(async move |this, cx| {
 662                    Self::open_diff_internal(this, DiffKind::Uncommitted, changes.await, buffer, cx)
 663                        .await
 664                        .map_err(Arc::new)
 665                })
 666                .shared()
 667            })
 668            .clone();
 669
 670        cx.background_spawn(async move { task.await.map_err(|e| anyhow!("{e}")) })
 671    }
 672
 673    async fn open_diff_internal(
 674        this: WeakEntity<Self>,
 675        kind: DiffKind,
 676        texts: Result<DiffBasesChange>,
 677        buffer_entity: Entity<Buffer>,
 678        cx: &mut AsyncApp,
 679    ) -> Result<Entity<BufferDiff>> {
 680        let diff_bases_change = match texts {
 681            Err(e) => {
 682                this.update(cx, |this, cx| {
 683                    let buffer = buffer_entity.read(cx);
 684                    let buffer_id = buffer.remote_id();
 685                    this.loading_diffs.remove(&(buffer_id, kind));
 686                })?;
 687                return Err(e);
 688            }
 689            Ok(change) => change,
 690        };
 691
 692        this.update(cx, |this, cx| {
 693            let buffer = buffer_entity.read(cx);
 694            let buffer_id = buffer.remote_id();
 695            let language = buffer.language().cloned();
 696            let language_registry = buffer.language_registry();
 697            let text_snapshot = buffer.text_snapshot();
 698            this.loading_diffs.remove(&(buffer_id, kind));
 699
 700            let git_store = cx.weak_entity();
 701            let diff_state = this
 702                .diffs
 703                .entry(buffer_id)
 704                .or_insert_with(|| cx.new(|_| BufferGitState::new(git_store)));
 705
 706            let diff = cx.new(|cx| BufferDiff::new(&text_snapshot, cx));
 707
 708            cx.subscribe(&diff, Self::on_buffer_diff_event).detach();
 709            diff_state.update(cx, |diff_state, cx| {
 710                diff_state.language = language;
 711                diff_state.language_registry = language_registry;
 712
 713                match kind {
 714                    DiffKind::Unstaged => diff_state.unstaged_diff = Some(diff.downgrade()),
 715                    DiffKind::Uncommitted => {
 716                        let unstaged_diff = if let Some(diff) = diff_state.unstaged_diff() {
 717                            diff
 718                        } else {
 719                            let unstaged_diff = cx.new(|cx| BufferDiff::new(&text_snapshot, cx));
 720                            diff_state.unstaged_diff = Some(unstaged_diff.downgrade());
 721                            unstaged_diff
 722                        };
 723
 724                        diff.update(cx, |diff, _| diff.set_secondary_diff(unstaged_diff));
 725                        diff_state.uncommitted_diff = Some(diff.downgrade())
 726                    }
 727                }
 728
 729                diff_state.diff_bases_changed(text_snapshot, Some(diff_bases_change), cx);
 730                let rx = diff_state.wait_for_recalculation();
 731
 732                anyhow::Ok(async move {
 733                    if let Some(rx) = rx {
 734                        rx.await;
 735                    }
 736                    Ok(diff)
 737                })
 738            })
 739        })??
 740        .await
 741    }
 742
 743    pub fn get_unstaged_diff(&self, buffer_id: BufferId, cx: &App) -> Option<Entity<BufferDiff>> {
 744        let diff_state = self.diffs.get(&buffer_id)?;
 745        diff_state.read(cx).unstaged_diff.as_ref()?.upgrade()
 746    }
 747
 748    pub fn get_uncommitted_diff(
 749        &self,
 750        buffer_id: BufferId,
 751        cx: &App,
 752    ) -> Option<Entity<BufferDiff>> {
 753        let diff_state = self.diffs.get(&buffer_id)?;
 754        diff_state.read(cx).uncommitted_diff.as_ref()?.upgrade()
 755    }
 756
 757    pub fn open_conflict_set(
 758        &mut self,
 759        buffer: Entity<Buffer>,
 760        cx: &mut Context<Self>,
 761    ) -> Entity<ConflictSet> {
 762        log::debug!("open conflict set");
 763        let buffer_id = buffer.read(cx).remote_id();
 764
 765        if let Some(git_state) = self.diffs.get(&buffer_id)
 766            && let Some(conflict_set) = git_state
 767                .read(cx)
 768                .conflict_set
 769                .as_ref()
 770                .and_then(|weak| weak.upgrade())
 771        {
 772            let conflict_set = conflict_set.clone();
 773            let buffer_snapshot = buffer.read(cx).text_snapshot();
 774
 775            git_state.update(cx, |state, cx| {
 776                let _ = state.reparse_conflict_markers(buffer_snapshot, cx);
 777            });
 778
 779            return conflict_set;
 780        }
 781
 782        let is_unmerged = self
 783            .repository_and_path_for_buffer_id(buffer_id, cx)
 784            .map_or(false, |(repo, path)| {
 785                repo.read(cx).snapshot.has_conflict(&path)
 786            });
 787        let git_store = cx.weak_entity();
 788        let buffer_git_state = self
 789            .diffs
 790            .entry(buffer_id)
 791            .or_insert_with(|| cx.new(|_| BufferGitState::new(git_store)));
 792        let conflict_set = cx.new(|cx| ConflictSet::new(buffer_id, is_unmerged, cx));
 793
 794        self._subscriptions
 795            .push(cx.subscribe(&conflict_set, |_, _, _, cx| {
 796                cx.emit(GitStoreEvent::ConflictsUpdated);
 797            }));
 798
 799        buffer_git_state.update(cx, |state, cx| {
 800            state.conflict_set = Some(conflict_set.downgrade());
 801            let buffer_snapshot = buffer.read(cx).text_snapshot();
 802            let _ = state.reparse_conflict_markers(buffer_snapshot, cx);
 803        });
 804
 805        conflict_set
 806    }
 807
 808    pub fn project_path_git_status(
 809        &self,
 810        project_path: &ProjectPath,
 811        cx: &App,
 812    ) -> Option<FileStatus> {
 813        let (repo, repo_path) = self.repository_and_path_for_project_path(project_path, cx)?;
 814        Some(repo.read(cx).status_for_path(&repo_path)?.status)
 815    }
 816
 817    pub fn checkpoint(&self, cx: &mut App) -> Task<Result<GitStoreCheckpoint>> {
 818        let mut work_directory_abs_paths = Vec::new();
 819        let mut checkpoints = Vec::new();
 820        for repository in self.repositories.values() {
 821            repository.update(cx, |repository, _| {
 822                work_directory_abs_paths.push(repository.snapshot.work_directory_abs_path.clone());
 823                checkpoints.push(repository.checkpoint().map(|checkpoint| checkpoint?));
 824            });
 825        }
 826
 827        cx.background_executor().spawn(async move {
 828            let checkpoints = future::try_join_all(checkpoints).await?;
 829            Ok(GitStoreCheckpoint {
 830                checkpoints_by_work_dir_abs_path: work_directory_abs_paths
 831                    .into_iter()
 832                    .zip(checkpoints)
 833                    .collect(),
 834            })
 835        })
 836    }
 837
 838    pub fn restore_checkpoint(
 839        &self,
 840        checkpoint: GitStoreCheckpoint,
 841        cx: &mut App,
 842    ) -> Task<Result<()>> {
 843        let repositories_by_work_dir_abs_path = self
 844            .repositories
 845            .values()
 846            .map(|repo| (repo.read(cx).snapshot.work_directory_abs_path.clone(), repo))
 847            .collect::<HashMap<_, _>>();
 848
 849        let mut tasks = Vec::new();
 850        for (work_dir_abs_path, checkpoint) in checkpoint.checkpoints_by_work_dir_abs_path {
 851            if let Some(repository) = repositories_by_work_dir_abs_path.get(&work_dir_abs_path) {
 852                let restore = repository.update(cx, |repository, _| {
 853                    repository.restore_checkpoint(checkpoint)
 854                });
 855                tasks.push(async move { restore.await? });
 856            }
 857        }
 858        cx.background_spawn(async move {
 859            future::try_join_all(tasks).await?;
 860            Ok(())
 861        })
 862    }
 863
 864    /// Compares two checkpoints, returning true if they are equal.
 865    pub fn compare_checkpoints(
 866        &self,
 867        left: GitStoreCheckpoint,
 868        mut right: GitStoreCheckpoint,
 869        cx: &mut App,
 870    ) -> Task<Result<bool>> {
 871        let repositories_by_work_dir_abs_path = self
 872            .repositories
 873            .values()
 874            .map(|repo| (repo.read(cx).snapshot.work_directory_abs_path.clone(), repo))
 875            .collect::<HashMap<_, _>>();
 876
 877        let mut tasks = Vec::new();
 878        for (work_dir_abs_path, left_checkpoint) in left.checkpoints_by_work_dir_abs_path {
 879            if let Some(right_checkpoint) = right
 880                .checkpoints_by_work_dir_abs_path
 881                .remove(&work_dir_abs_path)
 882            {
 883                if let Some(repository) = repositories_by_work_dir_abs_path.get(&work_dir_abs_path)
 884                {
 885                    let compare = repository.update(cx, |repository, _| {
 886                        repository.compare_checkpoints(left_checkpoint, right_checkpoint)
 887                    });
 888
 889                    tasks.push(async move { compare.await? });
 890                }
 891            } else {
 892                return Task::ready(Ok(false));
 893            }
 894        }
 895        cx.background_spawn(async move {
 896            Ok(future::try_join_all(tasks)
 897                .await?
 898                .into_iter()
 899                .all(|result| result))
 900        })
 901    }
 902
 903    /// Blames a buffer.
 904    pub fn blame_buffer(
 905        &self,
 906        buffer: &Entity<Buffer>,
 907        version: Option<clock::Global>,
 908        cx: &mut App,
 909    ) -> Task<Result<Option<Blame>>> {
 910        let buffer = buffer.read(cx);
 911        let Some((repo, repo_path)) =
 912            self.repository_and_path_for_buffer_id(buffer.remote_id(), cx)
 913        else {
 914            return Task::ready(Err(anyhow!("failed to find a git repository for buffer")));
 915        };
 916        let content = match &version {
 917            Some(version) => buffer.rope_for_version(version).clone(),
 918            None => buffer.as_rope().clone(),
 919        };
 920        let version = version.unwrap_or(buffer.version());
 921        let buffer_id = buffer.remote_id();
 922
 923        let rx = repo.update(cx, |repo, _| {
 924            repo.send_job(None, move |state, _| async move {
 925                match state {
 926                    RepositoryState::Local { backend, .. } => backend
 927                        .blame(repo_path.clone(), content)
 928                        .await
 929                        .with_context(|| format!("Failed to blame {:?}", repo_path.0))
 930                        .map(Some),
 931                    RepositoryState::Remote { project_id, client } => {
 932                        let response = client
 933                            .request(proto::BlameBuffer {
 934                                project_id: project_id.to_proto(),
 935                                buffer_id: buffer_id.into(),
 936                                version: serialize_version(&version),
 937                            })
 938                            .await?;
 939                        Ok(deserialize_blame_buffer_response(response))
 940                    }
 941                }
 942            })
 943        });
 944
 945        cx.spawn(|_: &mut AsyncApp| async move { rx.await? })
 946    }
 947
 948    pub fn get_permalink_to_line(
 949        &self,
 950        buffer: &Entity<Buffer>,
 951        selection: Range<u32>,
 952        cx: &mut App,
 953    ) -> Task<Result<url::Url>> {
 954        let Some(file) = File::from_dyn(buffer.read(cx).file()) else {
 955            return Task::ready(Err(anyhow!("buffer has no file")));
 956        };
 957
 958        let Some((repo, repo_path)) = self.repository_and_path_for_project_path(
 959            &(file.worktree.read(cx).id(), file.path.clone()).into(),
 960            cx,
 961        ) else {
 962            // If we're not in a Git repo, check whether this is a Rust source
 963            // file in the Cargo registry (presumably opened with go-to-definition
 964            // from a normal Rust file). If so, we can put together a permalink
 965            // using crate metadata.
 966            if buffer
 967                .read(cx)
 968                .language()
 969                .is_none_or(|lang| lang.name() != "Rust".into())
 970            {
 971                return Task::ready(Err(anyhow!("no permalink available")));
 972            }
 973            let Some(file_path) = file.worktree.read(cx).absolutize(&file.path).ok() else {
 974                return Task::ready(Err(anyhow!("no permalink available")));
 975            };
 976            return cx.spawn(async move |cx| {
 977                let provider_registry = cx.update(GitHostingProviderRegistry::default_global)?;
 978                get_permalink_in_rust_registry_src(provider_registry, file_path, selection)
 979                    .context("no permalink available")
 980            });
 981
 982            // TODO remote case
 983        };
 984
 985        let buffer_id = buffer.read(cx).remote_id();
 986        let branch = repo.read(cx).branch.clone();
 987        let remote = branch
 988            .as_ref()
 989            .and_then(|b| b.upstream.as_ref())
 990            .and_then(|b| b.remote_name())
 991            .unwrap_or("origin")
 992            .to_string();
 993
 994        let rx = repo.update(cx, |repo, _| {
 995            repo.send_job(None, move |state, cx| async move {
 996                match state {
 997                    RepositoryState::Local { backend, .. } => {
 998                        let origin_url = backend
 999                            .remote_url(&remote)
1000                            .with_context(|| format!("remote \"{remote}\" not found"))?;
1001
1002                        let sha = backend.head_sha().await.context("reading HEAD SHA")?;
1003
1004                        let provider_registry =
1005                            cx.update(GitHostingProviderRegistry::default_global)?;
1006
1007                        let (provider, remote) =
1008                            parse_git_remote_url(provider_registry, &origin_url)
1009                                .context("parsing Git remote URL")?;
1010
1011                        let path = repo_path.to_str().with_context(|| {
1012                            format!("converting repo path {repo_path:?} to string")
1013                        })?;
1014
1015                        Ok(provider.build_permalink(
1016                            remote,
1017                            BuildPermalinkParams {
1018                                sha: &sha,
1019                                path,
1020                                selection: Some(selection),
1021                            },
1022                        ))
1023                    }
1024                    RepositoryState::Remote { project_id, client } => {
1025                        let response = client
1026                            .request(proto::GetPermalinkToLine {
1027                                project_id: project_id.to_proto(),
1028                                buffer_id: buffer_id.into(),
1029                                selection: Some(proto::Range {
1030                                    start: selection.start as u64,
1031                                    end: selection.end as u64,
1032                                }),
1033                            })
1034                            .await?;
1035
1036                        url::Url::parse(&response.permalink).context("failed to parse permalink")
1037                    }
1038                }
1039            })
1040        });
1041        cx.spawn(|_: &mut AsyncApp| async move { rx.await? })
1042    }
1043
1044    fn downstream_client(&self) -> Option<(AnyProtoClient, ProjectId)> {
1045        match &self.state {
1046            GitStoreState::Local {
1047                downstream: downstream_client,
1048                ..
1049            } => downstream_client
1050                .as_ref()
1051                .map(|state| (state.client.clone(), state.project_id)),
1052            GitStoreState::Ssh {
1053                downstream: downstream_client,
1054                ..
1055            } => downstream_client.clone(),
1056            GitStoreState::Remote { .. } => None,
1057        }
1058    }
1059
1060    fn upstream_client(&self) -> Option<AnyProtoClient> {
1061        match &self.state {
1062            GitStoreState::Local { .. } => None,
1063            GitStoreState::Ssh {
1064                upstream_client, ..
1065            }
1066            | GitStoreState::Remote {
1067                upstream_client, ..
1068            } => Some(upstream_client.clone()),
1069        }
1070    }
1071
1072    fn on_worktree_store_event(
1073        &mut self,
1074        worktree_store: Entity<WorktreeStore>,
1075        event: &WorktreeStoreEvent,
1076        cx: &mut Context<Self>,
1077    ) {
1078        let GitStoreState::Local {
1079            project_environment,
1080            downstream,
1081            next_repository_id,
1082            fs,
1083        } = &self.state
1084        else {
1085            return;
1086        };
1087
1088        match event {
1089            WorktreeStoreEvent::WorktreeUpdatedEntries(worktree_id, updated_entries) => {
1090                if let Some(worktree) = self
1091                    .worktree_store
1092                    .read(cx)
1093                    .worktree_for_id(*worktree_id, cx)
1094                {
1095                    let paths_by_git_repo =
1096                        self.process_updated_entries(&worktree, updated_entries, cx);
1097                    let downstream = downstream
1098                        .as_ref()
1099                        .map(|downstream| downstream.updates_tx.clone());
1100                    cx.spawn(async move |_, cx| {
1101                        let paths_by_git_repo = paths_by_git_repo.await;
1102                        for (repo, paths) in paths_by_git_repo {
1103                            repo.update(cx, |repo, cx| {
1104                                repo.paths_changed(paths, downstream.clone(), cx);
1105                            })
1106                            .ok();
1107                        }
1108                    })
1109                    .detach();
1110                }
1111            }
1112            WorktreeStoreEvent::WorktreeUpdatedGitRepositories(worktree_id, changed_repos) => {
1113                let Some(worktree) = worktree_store.read(cx).worktree_for_id(*worktree_id, cx)
1114                else {
1115                    return;
1116                };
1117                if !worktree.read(cx).is_visible() {
1118                    log::debug!(
1119                        "not adding repositories for local worktree {:?} because it's not visible",
1120                        worktree.read(cx).abs_path()
1121                    );
1122                    return;
1123                }
1124                self.update_repositories_from_worktree(
1125                    project_environment.clone(),
1126                    next_repository_id.clone(),
1127                    downstream
1128                        .as_ref()
1129                        .map(|downstream| downstream.updates_tx.clone()),
1130                    changed_repos.clone(),
1131                    fs.clone(),
1132                    cx,
1133                );
1134                self.local_worktree_git_repos_changed(worktree, changed_repos, cx);
1135            }
1136            _ => {}
1137        }
1138    }
1139
1140    fn on_repository_event(
1141        &mut self,
1142        repo: Entity<Repository>,
1143        event: &RepositoryEvent,
1144        cx: &mut Context<Self>,
1145    ) {
1146        let id = repo.read(cx).id;
1147        let repo_snapshot = repo.read(cx).snapshot.clone();
1148        for (buffer_id, diff) in self.diffs.iter() {
1149            if let Some((buffer_repo, repo_path)) =
1150                self.repository_and_path_for_buffer_id(*buffer_id, cx)
1151                && buffer_repo == repo
1152            {
1153                diff.update(cx, |diff, cx| {
1154                    if let Some(conflict_set) = &diff.conflict_set {
1155                        let conflict_status_changed =
1156                            conflict_set.update(cx, |conflict_set, cx| {
1157                                let has_conflict = repo_snapshot.has_conflict(&repo_path);
1158                                conflict_set.set_has_conflict(has_conflict, cx)
1159                            })?;
1160                        if conflict_status_changed {
1161                            let buffer_store = self.buffer_store.read(cx);
1162                            if let Some(buffer) = buffer_store.get(*buffer_id) {
1163                                let _ = diff
1164                                    .reparse_conflict_markers(buffer.read(cx).text_snapshot(), cx);
1165                            }
1166                        }
1167                    }
1168                    anyhow::Ok(())
1169                })
1170                .ok();
1171            }
1172        }
1173        cx.emit(GitStoreEvent::RepositoryUpdated(
1174            id,
1175            event.clone(),
1176            self.active_repo_id == Some(id),
1177        ))
1178    }
1179
1180    fn on_jobs_updated(&mut self, _: Entity<Repository>, _: &JobsUpdated, cx: &mut Context<Self>) {
1181        cx.emit(GitStoreEvent::JobsUpdated)
1182    }
1183
1184    /// Update our list of repositories and schedule git scans in response to a notification from a worktree,
1185    fn update_repositories_from_worktree(
1186        &mut self,
1187        project_environment: Entity<ProjectEnvironment>,
1188        next_repository_id: Arc<AtomicU64>,
1189        updates_tx: Option<mpsc::UnboundedSender<DownstreamUpdate>>,
1190        updated_git_repositories: UpdatedGitRepositoriesSet,
1191        fs: Arc<dyn Fs>,
1192        cx: &mut Context<Self>,
1193    ) {
1194        let mut removed_ids = Vec::new();
1195        for update in updated_git_repositories.iter() {
1196            if let Some((id, existing)) = self.repositories.iter().find(|(_, repo)| {
1197                let existing_work_directory_abs_path =
1198                    repo.read(cx).work_directory_abs_path.clone();
1199                Some(&existing_work_directory_abs_path)
1200                    == update.old_work_directory_abs_path.as_ref()
1201                    || Some(&existing_work_directory_abs_path)
1202                        == update.new_work_directory_abs_path.as_ref()
1203            }) {
1204                if let Some(new_work_directory_abs_path) =
1205                    update.new_work_directory_abs_path.clone()
1206                {
1207                    existing.update(cx, |existing, cx| {
1208                        existing.snapshot.work_directory_abs_path = new_work_directory_abs_path;
1209                        existing.schedule_scan(updates_tx.clone(), cx);
1210                    });
1211                } else {
1212                    removed_ids.push(*id);
1213                }
1214            } else if let UpdatedGitRepository {
1215                new_work_directory_abs_path: Some(work_directory_abs_path),
1216                dot_git_abs_path: Some(dot_git_abs_path),
1217                repository_dir_abs_path: Some(repository_dir_abs_path),
1218                common_dir_abs_path: Some(common_dir_abs_path),
1219                ..
1220            } = update
1221            {
1222                let id = RepositoryId(next_repository_id.fetch_add(1, atomic::Ordering::Release));
1223                let git_store = cx.weak_entity();
1224                let repo = cx.new(|cx| {
1225                    let mut repo = Repository::local(
1226                        id,
1227                        work_directory_abs_path.clone(),
1228                        dot_git_abs_path.clone(),
1229                        repository_dir_abs_path.clone(),
1230                        common_dir_abs_path.clone(),
1231                        project_environment.downgrade(),
1232                        fs.clone(),
1233                        git_store,
1234                        cx,
1235                    );
1236                    repo.schedule_scan(updates_tx.clone(), cx);
1237                    repo
1238                });
1239                self._subscriptions
1240                    .push(cx.subscribe(&repo, Self::on_repository_event));
1241                self._subscriptions
1242                    .push(cx.subscribe(&repo, Self::on_jobs_updated));
1243                self.repositories.insert(id, repo);
1244                cx.emit(GitStoreEvent::RepositoryAdded(id));
1245                self.active_repo_id.get_or_insert_with(|| {
1246                    cx.emit(GitStoreEvent::ActiveRepositoryChanged(Some(id)));
1247                    id
1248                });
1249            }
1250        }
1251
1252        for id in removed_ids {
1253            if self.active_repo_id == Some(id) {
1254                self.active_repo_id = None;
1255                cx.emit(GitStoreEvent::ActiveRepositoryChanged(None));
1256            }
1257            self.repositories.remove(&id);
1258            if let Some(updates_tx) = updates_tx.as_ref() {
1259                updates_tx
1260                    .unbounded_send(DownstreamUpdate::RemoveRepository(id))
1261                    .ok();
1262            }
1263        }
1264    }
1265
1266    fn on_buffer_store_event(
1267        &mut self,
1268        _: Entity<BufferStore>,
1269        event: &BufferStoreEvent,
1270        cx: &mut Context<Self>,
1271    ) {
1272        match event {
1273            BufferStoreEvent::BufferAdded(buffer) => {
1274                cx.subscribe(buffer, |this, buffer, event, cx| {
1275                    if let BufferEvent::LanguageChanged = event {
1276                        let buffer_id = buffer.read(cx).remote_id();
1277                        if let Some(diff_state) = this.diffs.get(&buffer_id) {
1278                            diff_state.update(cx, |diff_state, cx| {
1279                                diff_state.buffer_language_changed(buffer, cx);
1280                            });
1281                        }
1282                    }
1283                })
1284                .detach();
1285            }
1286            BufferStoreEvent::SharedBufferClosed(peer_id, buffer_id) => {
1287                if let Some(diffs) = self.shared_diffs.get_mut(peer_id) {
1288                    diffs.remove(buffer_id);
1289                }
1290            }
1291            BufferStoreEvent::BufferDropped(buffer_id) => {
1292                self.diffs.remove(buffer_id);
1293                for diffs in self.shared_diffs.values_mut() {
1294                    diffs.remove(buffer_id);
1295                }
1296            }
1297
1298            _ => {}
1299        }
1300    }
1301
1302    pub fn recalculate_buffer_diffs(
1303        &mut self,
1304        buffers: Vec<Entity<Buffer>>,
1305        cx: &mut Context<Self>,
1306    ) -> impl Future<Output = ()> + use<> {
1307        let mut futures = Vec::new();
1308        for buffer in buffers {
1309            if let Some(diff_state) = self.diffs.get_mut(&buffer.read(cx).remote_id()) {
1310                let buffer = buffer.read(cx).text_snapshot();
1311                diff_state.update(cx, |diff_state, cx| {
1312                    diff_state.recalculate_diffs(buffer.clone(), cx);
1313                    futures.extend(diff_state.wait_for_recalculation().map(FutureExt::boxed));
1314                });
1315                futures.push(diff_state.update(cx, |diff_state, cx| {
1316                    diff_state
1317                        .reparse_conflict_markers(buffer, cx)
1318                        .map(|_| {})
1319                        .boxed()
1320                }));
1321            }
1322        }
1323        async move {
1324            futures::future::join_all(futures).await;
1325        }
1326    }
1327
1328    fn on_buffer_diff_event(
1329        &mut self,
1330        diff: Entity<buffer_diff::BufferDiff>,
1331        event: &BufferDiffEvent,
1332        cx: &mut Context<Self>,
1333    ) {
1334        if let BufferDiffEvent::HunksStagedOrUnstaged(new_index_text) = event {
1335            let buffer_id = diff.read(cx).buffer_id;
1336            if let Some(diff_state) = self.diffs.get(&buffer_id) {
1337                let hunk_staging_operation_count = diff_state.update(cx, |diff_state, _| {
1338                    diff_state.hunk_staging_operation_count += 1;
1339                    diff_state.hunk_staging_operation_count
1340                });
1341                if let Some((repo, path)) = self.repository_and_path_for_buffer_id(buffer_id, cx) {
1342                    let recv = repo.update(cx, |repo, cx| {
1343                        log::debug!("hunks changed for {}", path.display());
1344                        repo.spawn_set_index_text_job(
1345                            path,
1346                            new_index_text.as_ref().map(|rope| rope.to_string()),
1347                            Some(hunk_staging_operation_count),
1348                            cx,
1349                        )
1350                    });
1351                    let diff = diff.downgrade();
1352                    cx.spawn(async move |this, cx| {
1353                        if let Ok(Err(error)) = cx.background_spawn(recv).await {
1354                            diff.update(cx, |diff, cx| {
1355                                diff.clear_pending_hunks(cx);
1356                            })
1357                            .ok();
1358                            this.update(cx, |_, cx| cx.emit(GitStoreEvent::IndexWriteError(error)))
1359                                .ok();
1360                        }
1361                    })
1362                    .detach();
1363                }
1364            }
1365        }
1366    }
1367
1368    fn local_worktree_git_repos_changed(
1369        &mut self,
1370        worktree: Entity<Worktree>,
1371        changed_repos: &UpdatedGitRepositoriesSet,
1372        cx: &mut Context<Self>,
1373    ) {
1374        log::debug!("local worktree repos changed");
1375        debug_assert!(worktree.read(cx).is_local());
1376
1377        for repository in self.repositories.values() {
1378            repository.update(cx, |repository, cx| {
1379                let repo_abs_path = &repository.work_directory_abs_path;
1380                if changed_repos.iter().any(|update| {
1381                    update.old_work_directory_abs_path.as_ref() == Some(repo_abs_path)
1382                        || update.new_work_directory_abs_path.as_ref() == Some(repo_abs_path)
1383                }) {
1384                    repository.reload_buffer_diff_bases(cx);
1385                }
1386            });
1387        }
1388    }
1389
1390    pub fn repositories(&self) -> &HashMap<RepositoryId, Entity<Repository>> {
1391        &self.repositories
1392    }
1393
1394    pub fn status_for_buffer_id(&self, buffer_id: BufferId, cx: &App) -> Option<FileStatus> {
1395        let (repo, path) = self.repository_and_path_for_buffer_id(buffer_id, cx)?;
1396        let status = repo.read(cx).snapshot.status_for_path(&path)?;
1397        Some(status.status)
1398    }
1399
1400    pub fn repository_and_path_for_buffer_id(
1401        &self,
1402        buffer_id: BufferId,
1403        cx: &App,
1404    ) -> Option<(Entity<Repository>, RepoPath)> {
1405        let buffer = self.buffer_store.read(cx).get(buffer_id)?;
1406        let project_path = buffer.read(cx).project_path(cx)?;
1407        self.repository_and_path_for_project_path(&project_path, cx)
1408    }
1409
1410    pub fn repository_and_path_for_project_path(
1411        &self,
1412        path: &ProjectPath,
1413        cx: &App,
1414    ) -> Option<(Entity<Repository>, RepoPath)> {
1415        let abs_path = self.worktree_store.read(cx).absolutize(path, cx)?;
1416        self.repositories
1417            .values()
1418            .filter_map(|repo| {
1419                let repo_path = repo.read(cx).abs_path_to_repo_path(&abs_path)?;
1420                Some((repo.clone(), repo_path))
1421            })
1422            .max_by_key(|(repo, _)| repo.read(cx).work_directory_abs_path.clone())
1423    }
1424
1425    pub fn git_init(
1426        &self,
1427        path: Arc<Path>,
1428        fallback_branch_name: String,
1429        cx: &App,
1430    ) -> Task<Result<()>> {
1431        match &self.state {
1432            GitStoreState::Local { fs, .. } => {
1433                let fs = fs.clone();
1434                cx.background_executor()
1435                    .spawn(async move { fs.git_init(&path, fallback_branch_name) })
1436            }
1437            GitStoreState::Ssh {
1438                upstream_client,
1439                upstream_project_id: project_id,
1440                ..
1441            }
1442            | GitStoreState::Remote {
1443                upstream_client,
1444                upstream_project_id: project_id,
1445                ..
1446            } => {
1447                let client = upstream_client.clone();
1448                let project_id = *project_id;
1449                cx.background_executor().spawn(async move {
1450                    client
1451                        .request(proto::GitInit {
1452                            project_id: project_id.0,
1453                            abs_path: path.to_string_lossy().to_string(),
1454                            fallback_branch_name,
1455                        })
1456                        .await?;
1457                    Ok(())
1458                })
1459            }
1460        }
1461    }
1462
1463    pub fn git_clone(
1464        &self,
1465        repo: String,
1466        path: impl Into<Arc<std::path::Path>>,
1467        cx: &App,
1468    ) -> Task<Result<()>> {
1469        let path = path.into();
1470        match &self.state {
1471            GitStoreState::Local { fs, .. } => {
1472                let fs = fs.clone();
1473                cx.background_executor()
1474                    .spawn(async move { fs.git_clone(&repo, &path).await })
1475            }
1476            GitStoreState::Ssh {
1477                upstream_client,
1478                upstream_project_id,
1479                ..
1480            } => {
1481                let request = upstream_client.request(proto::GitClone {
1482                    project_id: upstream_project_id.0,
1483                    abs_path: path.to_string_lossy().to_string(),
1484                    remote_repo: repo,
1485                });
1486
1487                cx.background_spawn(async move {
1488                    let result = request.await?;
1489
1490                    match result.success {
1491                        true => Ok(()),
1492                        false => Err(anyhow!("Git Clone failed")),
1493                    }
1494                })
1495            }
1496            GitStoreState::Remote { .. } => {
1497                Task::ready(Err(anyhow!("Git Clone isn't supported for remote users")))
1498            }
1499        }
1500    }
1501
1502    async fn handle_update_repository(
1503        this: Entity<Self>,
1504        envelope: TypedEnvelope<proto::UpdateRepository>,
1505        mut cx: AsyncApp,
1506    ) -> Result<()> {
1507        this.update(&mut cx, |this, cx| {
1508            let mut update = envelope.payload;
1509
1510            let id = RepositoryId::from_proto(update.id);
1511            let client = this
1512                .upstream_client()
1513                .context("no upstream client")?
1514                .clone();
1515
1516            let mut is_new = false;
1517            let repo = this.repositories.entry(id).or_insert_with(|| {
1518                is_new = true;
1519                let git_store = cx.weak_entity();
1520                cx.new(|cx| {
1521                    Repository::remote(
1522                        id,
1523                        Path::new(&update.abs_path).into(),
1524                        ProjectId(update.project_id),
1525                        client,
1526                        git_store,
1527                        cx,
1528                    )
1529                })
1530            });
1531            if is_new {
1532                this._subscriptions
1533                    .push(cx.subscribe(repo, Self::on_repository_event))
1534            }
1535
1536            repo.update(cx, {
1537                let update = update.clone();
1538                |repo, cx| repo.apply_remote_update(update, is_new, cx)
1539            })?;
1540
1541            this.active_repo_id.get_or_insert_with(|| {
1542                cx.emit(GitStoreEvent::ActiveRepositoryChanged(Some(id)));
1543                id
1544            });
1545
1546            if let Some((client, project_id)) = this.downstream_client() {
1547                update.project_id = project_id.to_proto();
1548                client.send(update).log_err();
1549            }
1550            Ok(())
1551        })?
1552    }
1553
1554    async fn handle_remove_repository(
1555        this: Entity<Self>,
1556        envelope: TypedEnvelope<proto::RemoveRepository>,
1557        mut cx: AsyncApp,
1558    ) -> Result<()> {
1559        this.update(&mut cx, |this, cx| {
1560            let mut update = envelope.payload;
1561            let id = RepositoryId::from_proto(update.id);
1562            this.repositories.remove(&id);
1563            if let Some((client, project_id)) = this.downstream_client() {
1564                update.project_id = project_id.to_proto();
1565                client.send(update).log_err();
1566            }
1567            if this.active_repo_id == Some(id) {
1568                this.active_repo_id = None;
1569                cx.emit(GitStoreEvent::ActiveRepositoryChanged(None));
1570            }
1571            cx.emit(GitStoreEvent::RepositoryRemoved(id));
1572        })
1573    }
1574
1575    async fn handle_git_init(
1576        this: Entity<Self>,
1577        envelope: TypedEnvelope<proto::GitInit>,
1578        cx: AsyncApp,
1579    ) -> Result<proto::Ack> {
1580        let path: Arc<Path> = PathBuf::from(envelope.payload.abs_path).into();
1581        let name = envelope.payload.fallback_branch_name;
1582        cx.update(|cx| this.read(cx).git_init(path, name, cx))?
1583            .await?;
1584
1585        Ok(proto::Ack {})
1586    }
1587
1588    async fn handle_git_clone(
1589        this: Entity<Self>,
1590        envelope: TypedEnvelope<proto::GitClone>,
1591        cx: AsyncApp,
1592    ) -> Result<proto::GitCloneResponse> {
1593        let path: Arc<Path> = PathBuf::from(envelope.payload.abs_path).into();
1594        let repo_name = envelope.payload.remote_repo;
1595        let result = cx
1596            .update(|cx| this.read(cx).git_clone(repo_name, path, cx))?
1597            .await;
1598
1599        Ok(proto::GitCloneResponse {
1600            success: result.is_ok(),
1601        })
1602    }
1603
1604    async fn handle_fetch(
1605        this: Entity<Self>,
1606        envelope: TypedEnvelope<proto::Fetch>,
1607        mut cx: AsyncApp,
1608    ) -> Result<proto::RemoteMessageResponse> {
1609        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1610        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1611        let fetch_options = FetchOptions::from_proto(envelope.payload.remote);
1612        let askpass_id = envelope.payload.askpass_id;
1613
1614        let askpass = make_remote_delegate(
1615            this,
1616            envelope.payload.project_id,
1617            repository_id,
1618            askpass_id,
1619            &mut cx,
1620        );
1621
1622        let remote_output = repository_handle
1623            .update(&mut cx, |repository_handle, cx| {
1624                repository_handle.fetch(fetch_options, askpass, cx)
1625            })?
1626            .await??;
1627
1628        Ok(proto::RemoteMessageResponse {
1629            stdout: remote_output.stdout,
1630            stderr: remote_output.stderr,
1631        })
1632    }
1633
1634    async fn handle_push(
1635        this: Entity<Self>,
1636        envelope: TypedEnvelope<proto::Push>,
1637        mut cx: AsyncApp,
1638    ) -> Result<proto::RemoteMessageResponse> {
1639        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1640        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1641
1642        let askpass_id = envelope.payload.askpass_id;
1643        let askpass = make_remote_delegate(
1644            this,
1645            envelope.payload.project_id,
1646            repository_id,
1647            askpass_id,
1648            &mut cx,
1649        );
1650
1651        let options = envelope
1652            .payload
1653            .options
1654            .as_ref()
1655            .map(|_| match envelope.payload.options() {
1656                proto::push::PushOptions::SetUpstream => git::repository::PushOptions::SetUpstream,
1657                proto::push::PushOptions::Force => git::repository::PushOptions::Force,
1658            });
1659
1660        let branch_name = envelope.payload.branch_name.into();
1661        let remote_name = envelope.payload.remote_name.into();
1662
1663        let remote_output = repository_handle
1664            .update(&mut cx, |repository_handle, cx| {
1665                repository_handle.push(branch_name, remote_name, options, askpass, cx)
1666            })?
1667            .await??;
1668        Ok(proto::RemoteMessageResponse {
1669            stdout: remote_output.stdout,
1670            stderr: remote_output.stderr,
1671        })
1672    }
1673
1674    async fn handle_pull(
1675        this: Entity<Self>,
1676        envelope: TypedEnvelope<proto::Pull>,
1677        mut cx: AsyncApp,
1678    ) -> Result<proto::RemoteMessageResponse> {
1679        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1680        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1681        let askpass_id = envelope.payload.askpass_id;
1682        let askpass = make_remote_delegate(
1683            this,
1684            envelope.payload.project_id,
1685            repository_id,
1686            askpass_id,
1687            &mut cx,
1688        );
1689
1690        let branch_name = envelope.payload.branch_name.into();
1691        let remote_name = envelope.payload.remote_name.into();
1692
1693        let remote_message = repository_handle
1694            .update(&mut cx, |repository_handle, cx| {
1695                repository_handle.pull(branch_name, remote_name, askpass, cx)
1696            })?
1697            .await??;
1698
1699        Ok(proto::RemoteMessageResponse {
1700            stdout: remote_message.stdout,
1701            stderr: remote_message.stderr,
1702        })
1703    }
1704
1705    async fn handle_stage(
1706        this: Entity<Self>,
1707        envelope: TypedEnvelope<proto::Stage>,
1708        mut cx: AsyncApp,
1709    ) -> Result<proto::Ack> {
1710        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1711        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1712
1713        let entries = envelope
1714            .payload
1715            .paths
1716            .into_iter()
1717            .map(PathBuf::from)
1718            .map(RepoPath::new)
1719            .collect();
1720
1721        repository_handle
1722            .update(&mut cx, |repository_handle, cx| {
1723                repository_handle.stage_entries(entries, cx)
1724            })?
1725            .await?;
1726        Ok(proto::Ack {})
1727    }
1728
1729    async fn handle_unstage(
1730        this: Entity<Self>,
1731        envelope: TypedEnvelope<proto::Unstage>,
1732        mut cx: AsyncApp,
1733    ) -> Result<proto::Ack> {
1734        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1735        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1736
1737        let entries = envelope
1738            .payload
1739            .paths
1740            .into_iter()
1741            .map(PathBuf::from)
1742            .map(RepoPath::new)
1743            .collect();
1744
1745        repository_handle
1746            .update(&mut cx, |repository_handle, cx| {
1747                repository_handle.unstage_entries(entries, cx)
1748            })?
1749            .await?;
1750
1751        Ok(proto::Ack {})
1752    }
1753
1754    async fn handle_stash(
1755        this: Entity<Self>,
1756        envelope: TypedEnvelope<proto::Stash>,
1757        mut cx: AsyncApp,
1758    ) -> Result<proto::Ack> {
1759        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1760        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1761
1762        let entries = envelope
1763            .payload
1764            .paths
1765            .into_iter()
1766            .map(PathBuf::from)
1767            .map(RepoPath::new)
1768            .collect();
1769
1770        repository_handle
1771            .update(&mut cx, |repository_handle, cx| {
1772                repository_handle.stash_entries(entries, cx)
1773            })?
1774            .await?;
1775
1776        Ok(proto::Ack {})
1777    }
1778
1779    async fn handle_stash_pop(
1780        this: Entity<Self>,
1781        envelope: TypedEnvelope<proto::StashPop>,
1782        mut cx: AsyncApp,
1783    ) -> Result<proto::Ack> {
1784        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1785        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1786
1787        repository_handle
1788            .update(&mut cx, |repository_handle, cx| {
1789                repository_handle.stash_pop(cx)
1790            })?
1791            .await?;
1792
1793        Ok(proto::Ack {})
1794    }
1795
1796    async fn handle_set_index_text(
1797        this: Entity<Self>,
1798        envelope: TypedEnvelope<proto::SetIndexText>,
1799        mut cx: AsyncApp,
1800    ) -> Result<proto::Ack> {
1801        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1802        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1803        let repo_path = RepoPath::from_str(&envelope.payload.path);
1804
1805        repository_handle
1806            .update(&mut cx, |repository_handle, cx| {
1807                repository_handle.spawn_set_index_text_job(
1808                    repo_path,
1809                    envelope.payload.text,
1810                    None,
1811                    cx,
1812                )
1813            })?
1814            .await??;
1815        Ok(proto::Ack {})
1816    }
1817
1818    async fn handle_commit(
1819        this: Entity<Self>,
1820        envelope: TypedEnvelope<proto::Commit>,
1821        mut cx: AsyncApp,
1822    ) -> Result<proto::Ack> {
1823        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1824        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1825
1826        let message = SharedString::from(envelope.payload.message);
1827        let name = envelope.payload.name.map(SharedString::from);
1828        let email = envelope.payload.email.map(SharedString::from);
1829        let options = envelope.payload.options.unwrap_or_default();
1830
1831        repository_handle
1832            .update(&mut cx, |repository_handle, cx| {
1833                repository_handle.commit(
1834                    message,
1835                    name.zip(email),
1836                    CommitOptions {
1837                        amend: options.amend,
1838                        signoff: options.signoff,
1839                    },
1840                    cx,
1841                )
1842            })?
1843            .await??;
1844        Ok(proto::Ack {})
1845    }
1846
1847    async fn handle_get_remotes(
1848        this: Entity<Self>,
1849        envelope: TypedEnvelope<proto::GetRemotes>,
1850        mut cx: AsyncApp,
1851    ) -> Result<proto::GetRemotesResponse> {
1852        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1853        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1854
1855        let branch_name = envelope.payload.branch_name;
1856
1857        let remotes = repository_handle
1858            .update(&mut cx, |repository_handle, _| {
1859                repository_handle.get_remotes(branch_name)
1860            })?
1861            .await??;
1862
1863        Ok(proto::GetRemotesResponse {
1864            remotes: remotes
1865                .into_iter()
1866                .map(|remotes| proto::get_remotes_response::Remote {
1867                    name: remotes.name.to_string(),
1868                })
1869                .collect::<Vec<_>>(),
1870        })
1871    }
1872
1873    async fn handle_get_branches(
1874        this: Entity<Self>,
1875        envelope: TypedEnvelope<proto::GitGetBranches>,
1876        mut cx: AsyncApp,
1877    ) -> Result<proto::GitBranchesResponse> {
1878        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1879        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1880
1881        let branches = repository_handle
1882            .update(&mut cx, |repository_handle, _| repository_handle.branches())?
1883            .await??;
1884
1885        Ok(proto::GitBranchesResponse {
1886            branches: branches
1887                .into_iter()
1888                .map(|branch| branch_to_proto(&branch))
1889                .collect::<Vec<_>>(),
1890        })
1891    }
1892    async fn handle_get_default_branch(
1893        this: Entity<Self>,
1894        envelope: TypedEnvelope<proto::GetDefaultBranch>,
1895        mut cx: AsyncApp,
1896    ) -> Result<proto::GetDefaultBranchResponse> {
1897        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1898        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1899
1900        let branch = repository_handle
1901            .update(&mut cx, |repository_handle, _| {
1902                repository_handle.default_branch()
1903            })?
1904            .await??
1905            .map(Into::into);
1906
1907        Ok(proto::GetDefaultBranchResponse { branch })
1908    }
1909    async fn handle_create_branch(
1910        this: Entity<Self>,
1911        envelope: TypedEnvelope<proto::GitCreateBranch>,
1912        mut cx: AsyncApp,
1913    ) -> Result<proto::Ack> {
1914        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1915        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1916        let branch_name = envelope.payload.branch_name;
1917
1918        repository_handle
1919            .update(&mut cx, |repository_handle, _| {
1920                repository_handle.create_branch(branch_name)
1921            })?
1922            .await??;
1923
1924        Ok(proto::Ack {})
1925    }
1926
1927    async fn handle_change_branch(
1928        this: Entity<Self>,
1929        envelope: TypedEnvelope<proto::GitChangeBranch>,
1930        mut cx: AsyncApp,
1931    ) -> Result<proto::Ack> {
1932        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1933        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1934        let branch_name = envelope.payload.branch_name;
1935
1936        repository_handle
1937            .update(&mut cx, |repository_handle, _| {
1938                repository_handle.change_branch(branch_name)
1939            })?
1940            .await??;
1941
1942        Ok(proto::Ack {})
1943    }
1944
1945    async fn handle_show(
1946        this: Entity<Self>,
1947        envelope: TypedEnvelope<proto::GitShow>,
1948        mut cx: AsyncApp,
1949    ) -> Result<proto::GitCommitDetails> {
1950        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1951        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1952
1953        let commit = repository_handle
1954            .update(&mut cx, |repository_handle, _| {
1955                repository_handle.show(envelope.payload.commit)
1956            })?
1957            .await??;
1958        Ok(proto::GitCommitDetails {
1959            sha: commit.sha.into(),
1960            message: commit.message.into(),
1961            commit_timestamp: commit.commit_timestamp,
1962            author_email: commit.author_email.into(),
1963            author_name: commit.author_name.into(),
1964        })
1965    }
1966
1967    async fn handle_load_commit_diff(
1968        this: Entity<Self>,
1969        envelope: TypedEnvelope<proto::LoadCommitDiff>,
1970        mut cx: AsyncApp,
1971    ) -> Result<proto::LoadCommitDiffResponse> {
1972        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1973        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1974
1975        let commit_diff = repository_handle
1976            .update(&mut cx, |repository_handle, _| {
1977                repository_handle.load_commit_diff(envelope.payload.commit)
1978            })?
1979            .await??;
1980        Ok(proto::LoadCommitDiffResponse {
1981            files: commit_diff
1982                .files
1983                .into_iter()
1984                .map(|file| proto::CommitFile {
1985                    path: file.path.to_string(),
1986                    old_text: file.old_text,
1987                    new_text: file.new_text,
1988                })
1989                .collect(),
1990        })
1991    }
1992
1993    async fn handle_reset(
1994        this: Entity<Self>,
1995        envelope: TypedEnvelope<proto::GitReset>,
1996        mut cx: AsyncApp,
1997    ) -> Result<proto::Ack> {
1998        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1999        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
2000
2001        let mode = match envelope.payload.mode() {
2002            git_reset::ResetMode::Soft => ResetMode::Soft,
2003            git_reset::ResetMode::Mixed => ResetMode::Mixed,
2004        };
2005
2006        repository_handle
2007            .update(&mut cx, |repository_handle, cx| {
2008                repository_handle.reset(envelope.payload.commit, mode, cx)
2009            })?
2010            .await??;
2011        Ok(proto::Ack {})
2012    }
2013
2014    async fn handle_checkout_files(
2015        this: Entity<Self>,
2016        envelope: TypedEnvelope<proto::GitCheckoutFiles>,
2017        mut cx: AsyncApp,
2018    ) -> Result<proto::Ack> {
2019        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
2020        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
2021        let paths = envelope
2022            .payload
2023            .paths
2024            .iter()
2025            .map(|s| RepoPath::from_str(s))
2026            .collect();
2027
2028        repository_handle
2029            .update(&mut cx, |repository_handle, cx| {
2030                repository_handle.checkout_files(&envelope.payload.commit, paths, cx)
2031            })?
2032            .await??;
2033        Ok(proto::Ack {})
2034    }
2035
2036    async fn handle_open_commit_message_buffer(
2037        this: Entity<Self>,
2038        envelope: TypedEnvelope<proto::OpenCommitMessageBuffer>,
2039        mut cx: AsyncApp,
2040    ) -> Result<proto::OpenBufferResponse> {
2041        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
2042        let repository = Self::repository_for_request(&this, repository_id, &mut cx)?;
2043        let buffer = repository
2044            .update(&mut cx, |repository, cx| {
2045                repository.open_commit_buffer(None, this.read(cx).buffer_store.clone(), cx)
2046            })?
2047            .await?;
2048
2049        let buffer_id = buffer.read_with(&cx, |buffer, _| buffer.remote_id())?;
2050        this.update(&mut cx, |this, cx| {
2051            this.buffer_store.update(cx, |buffer_store, cx| {
2052                buffer_store
2053                    .create_buffer_for_peer(
2054                        &buffer,
2055                        envelope.original_sender_id.unwrap_or(envelope.sender_id),
2056                        cx,
2057                    )
2058                    .detach_and_log_err(cx);
2059            })
2060        })?;
2061
2062        Ok(proto::OpenBufferResponse {
2063            buffer_id: buffer_id.to_proto(),
2064        })
2065    }
2066
2067    async fn handle_askpass(
2068        this: Entity<Self>,
2069        envelope: TypedEnvelope<proto::AskPassRequest>,
2070        mut cx: AsyncApp,
2071    ) -> Result<proto::AskPassResponse> {
2072        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
2073        let repository = Self::repository_for_request(&this, repository_id, &mut cx)?;
2074
2075        let delegates = cx.update(|cx| repository.read(cx).askpass_delegates.clone())?;
2076        let Some(mut askpass) = delegates.lock().remove(&envelope.payload.askpass_id) else {
2077            debug_panic!("no askpass found");
2078            anyhow::bail!("no askpass found");
2079        };
2080
2081        let response = askpass.ask_password(envelope.payload.prompt).await?;
2082
2083        delegates
2084            .lock()
2085            .insert(envelope.payload.askpass_id, askpass);
2086
2087        Ok(proto::AskPassResponse { response })
2088    }
2089
2090    async fn handle_check_for_pushed_commits(
2091        this: Entity<Self>,
2092        envelope: TypedEnvelope<proto::CheckForPushedCommits>,
2093        mut cx: AsyncApp,
2094    ) -> Result<proto::CheckForPushedCommitsResponse> {
2095        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
2096        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
2097
2098        let branches = repository_handle
2099            .update(&mut cx, |repository_handle, _| {
2100                repository_handle.check_for_pushed_commits()
2101            })?
2102            .await??;
2103        Ok(proto::CheckForPushedCommitsResponse {
2104            pushed_to: branches
2105                .into_iter()
2106                .map(|commit| commit.to_string())
2107                .collect(),
2108        })
2109    }
2110
2111    async fn handle_git_diff(
2112        this: Entity<Self>,
2113        envelope: TypedEnvelope<proto::GitDiff>,
2114        mut cx: AsyncApp,
2115    ) -> Result<proto::GitDiffResponse> {
2116        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
2117        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
2118        let diff_type = match envelope.payload.diff_type() {
2119            proto::git_diff::DiffType::HeadToIndex => DiffType::HeadToIndex,
2120            proto::git_diff::DiffType::HeadToWorktree => DiffType::HeadToWorktree,
2121        };
2122
2123        let mut diff = repository_handle
2124            .update(&mut cx, |repository_handle, cx| {
2125                repository_handle.diff(diff_type, cx)
2126            })?
2127            .await??;
2128        const ONE_MB: usize = 1_000_000;
2129        if diff.len() > ONE_MB {
2130            diff = diff.chars().take(ONE_MB).collect()
2131        }
2132
2133        Ok(proto::GitDiffResponse { diff })
2134    }
2135
2136    async fn handle_open_unstaged_diff(
2137        this: Entity<Self>,
2138        request: TypedEnvelope<proto::OpenUnstagedDiff>,
2139        mut cx: AsyncApp,
2140    ) -> Result<proto::OpenUnstagedDiffResponse> {
2141        let buffer_id = BufferId::new(request.payload.buffer_id)?;
2142        let diff = this
2143            .update(&mut cx, |this, cx| {
2144                let buffer = this.buffer_store.read(cx).get(buffer_id)?;
2145                Some(this.open_unstaged_diff(buffer, cx))
2146            })?
2147            .context("missing buffer")?
2148            .await?;
2149        this.update(&mut cx, |this, _| {
2150            let shared_diffs = this
2151                .shared_diffs
2152                .entry(request.original_sender_id.unwrap_or(request.sender_id))
2153                .or_default();
2154            shared_diffs.entry(buffer_id).or_default().unstaged = Some(diff.clone());
2155        })?;
2156        let staged_text = diff.read_with(&cx, |diff, _| diff.base_text_string())?;
2157        Ok(proto::OpenUnstagedDiffResponse { staged_text })
2158    }
2159
2160    async fn handle_open_uncommitted_diff(
2161        this: Entity<Self>,
2162        request: TypedEnvelope<proto::OpenUncommittedDiff>,
2163        mut cx: AsyncApp,
2164    ) -> Result<proto::OpenUncommittedDiffResponse> {
2165        let buffer_id = BufferId::new(request.payload.buffer_id)?;
2166        let diff = this
2167            .update(&mut cx, |this, cx| {
2168                let buffer = this.buffer_store.read(cx).get(buffer_id)?;
2169                Some(this.open_uncommitted_diff(buffer, cx))
2170            })?
2171            .context("missing buffer")?
2172            .await?;
2173        this.update(&mut cx, |this, _| {
2174            let shared_diffs = this
2175                .shared_diffs
2176                .entry(request.original_sender_id.unwrap_or(request.sender_id))
2177                .or_default();
2178            shared_diffs.entry(buffer_id).or_default().uncommitted = Some(diff.clone());
2179        })?;
2180        diff.read_with(&cx, |diff, cx| {
2181            use proto::open_uncommitted_diff_response::Mode;
2182
2183            let unstaged_diff = diff.secondary_diff();
2184            let index_snapshot = unstaged_diff.and_then(|diff| {
2185                let diff = diff.read(cx);
2186                diff.base_text_exists().then(|| diff.base_text())
2187            });
2188
2189            let mode;
2190            let staged_text;
2191            let committed_text;
2192            if diff.base_text_exists() {
2193                let committed_snapshot = diff.base_text();
2194                committed_text = Some(committed_snapshot.text());
2195                if let Some(index_text) = index_snapshot {
2196                    if index_text.remote_id() == committed_snapshot.remote_id() {
2197                        mode = Mode::IndexMatchesHead;
2198                        staged_text = None;
2199                    } else {
2200                        mode = Mode::IndexAndHead;
2201                        staged_text = Some(index_text.text());
2202                    }
2203                } else {
2204                    mode = Mode::IndexAndHead;
2205                    staged_text = None;
2206                }
2207            } else {
2208                mode = Mode::IndexAndHead;
2209                committed_text = None;
2210                staged_text = index_snapshot.as_ref().map(|buffer| buffer.text());
2211            }
2212
2213            proto::OpenUncommittedDiffResponse {
2214                committed_text,
2215                staged_text,
2216                mode: mode.into(),
2217            }
2218        })
2219    }
2220
2221    async fn handle_update_diff_bases(
2222        this: Entity<Self>,
2223        request: TypedEnvelope<proto::UpdateDiffBases>,
2224        mut cx: AsyncApp,
2225    ) -> Result<()> {
2226        let buffer_id = BufferId::new(request.payload.buffer_id)?;
2227        this.update(&mut cx, |this, cx| {
2228            if let Some(diff_state) = this.diffs.get_mut(&buffer_id)
2229                && let Some(buffer) = this.buffer_store.read(cx).get(buffer_id)
2230            {
2231                let buffer = buffer.read(cx).text_snapshot();
2232                diff_state.update(cx, |diff_state, cx| {
2233                    diff_state.handle_base_texts_updated(buffer, request.payload, cx);
2234                })
2235            }
2236        })
2237    }
2238
2239    async fn handle_blame_buffer(
2240        this: Entity<Self>,
2241        envelope: TypedEnvelope<proto::BlameBuffer>,
2242        mut cx: AsyncApp,
2243    ) -> Result<proto::BlameBufferResponse> {
2244        let buffer_id = BufferId::new(envelope.payload.buffer_id)?;
2245        let version = deserialize_version(&envelope.payload.version);
2246        let buffer = this.read_with(&cx, |this, cx| {
2247            this.buffer_store.read(cx).get_existing(buffer_id)
2248        })??;
2249        buffer
2250            .update(&mut cx, |buffer, _| {
2251                buffer.wait_for_version(version.clone())
2252            })?
2253            .await?;
2254        let blame = this
2255            .update(&mut cx, |this, cx| {
2256                this.blame_buffer(&buffer, Some(version), cx)
2257            })?
2258            .await?;
2259        Ok(serialize_blame_buffer_response(blame))
2260    }
2261
2262    async fn handle_get_permalink_to_line(
2263        this: Entity<Self>,
2264        envelope: TypedEnvelope<proto::GetPermalinkToLine>,
2265        mut cx: AsyncApp,
2266    ) -> Result<proto::GetPermalinkToLineResponse> {
2267        let buffer_id = BufferId::new(envelope.payload.buffer_id)?;
2268        // let version = deserialize_version(&envelope.payload.version);
2269        let selection = {
2270            let proto_selection = envelope
2271                .payload
2272                .selection
2273                .context("no selection to get permalink for defined")?;
2274            proto_selection.start as u32..proto_selection.end as u32
2275        };
2276        let buffer = this.read_with(&cx, |this, cx| {
2277            this.buffer_store.read(cx).get_existing(buffer_id)
2278        })??;
2279        let permalink = this
2280            .update(&mut cx, |this, cx| {
2281                this.get_permalink_to_line(&buffer, selection, cx)
2282            })?
2283            .await?;
2284        Ok(proto::GetPermalinkToLineResponse {
2285            permalink: permalink.to_string(),
2286        })
2287    }
2288
2289    fn repository_for_request(
2290        this: &Entity<Self>,
2291        id: RepositoryId,
2292        cx: &mut AsyncApp,
2293    ) -> Result<Entity<Repository>> {
2294        this.read_with(cx, |this, _| {
2295            this.repositories
2296                .get(&id)
2297                .context("missing repository handle")
2298                .cloned()
2299        })?
2300    }
2301
2302    pub fn repo_snapshots(&self, cx: &App) -> HashMap<RepositoryId, RepositorySnapshot> {
2303        self.repositories
2304            .iter()
2305            .map(|(id, repo)| (*id, repo.read(cx).snapshot.clone()))
2306            .collect()
2307    }
2308
2309    fn process_updated_entries(
2310        &self,
2311        worktree: &Entity<Worktree>,
2312        updated_entries: &[(Arc<Path>, ProjectEntryId, PathChange)],
2313        cx: &mut App,
2314    ) -> Task<HashMap<Entity<Repository>, Vec<RepoPath>>> {
2315        let mut repo_paths = self
2316            .repositories
2317            .values()
2318            .map(|repo| (repo.read(cx).work_directory_abs_path.clone(), repo.clone()))
2319            .collect::<Vec<_>>();
2320        let mut entries: Vec<_> = updated_entries
2321            .iter()
2322            .map(|(path, _, _)| path.clone())
2323            .collect();
2324        entries.sort();
2325        let worktree = worktree.read(cx);
2326
2327        let entries = entries
2328            .into_iter()
2329            .filter_map(|path| worktree.absolutize(&path).ok())
2330            .collect::<Arc<[_]>>();
2331
2332        let executor = cx.background_executor().clone();
2333        cx.background_executor().spawn(async move {
2334            repo_paths.sort_by(|lhs, rhs| lhs.0.cmp(&rhs.0));
2335            let mut paths_by_git_repo = HashMap::<_, Vec<_>>::default();
2336            let mut tasks = FuturesOrdered::new();
2337            for (repo_path, repo) in repo_paths.into_iter().rev() {
2338                let entries = entries.clone();
2339                let task = executor.spawn(async move {
2340                    // Find all repository paths that belong to this repo
2341                    let mut ix = entries.partition_point(|path| path < &*repo_path);
2342                    if ix == entries.len() {
2343                        return None;
2344                    };
2345
2346                    let mut paths = Vec::new();
2347                    // All paths prefixed by a given repo will constitute a continuous range.
2348                    while let Some(path) = entries.get(ix)
2349                        && let Some(repo_path) =
2350                            RepositorySnapshot::abs_path_to_repo_path_inner(&repo_path, path)
2351                    {
2352                        paths.push((repo_path, ix));
2353                        ix += 1;
2354                    }
2355                    if paths.is_empty() {
2356                        None
2357                    } else {
2358                        Some((repo, paths))
2359                    }
2360                });
2361                tasks.push_back(task);
2362            }
2363
2364            // Now, let's filter out the "duplicate" entries that were processed by multiple distinct repos.
2365            let mut path_was_used = vec![false; entries.len()];
2366            let tasks = tasks.collect::<Vec<_>>().await;
2367            // Process tasks from the back: iterating backwards allows us to see more-specific paths first.
2368            // We always want to assign a path to it's innermost repository.
2369            for t in tasks {
2370                let Some((repo, paths)) = t else {
2371                    continue;
2372                };
2373                let entry = paths_by_git_repo.entry(repo).or_default();
2374                for (repo_path, ix) in paths {
2375                    if path_was_used[ix] {
2376                        continue;
2377                    }
2378                    path_was_used[ix] = true;
2379                    entry.push(repo_path);
2380                }
2381            }
2382
2383            paths_by_git_repo
2384        })
2385    }
2386}
2387
2388impl BufferGitState {
2389    fn new(_git_store: WeakEntity<GitStore>) -> Self {
2390        Self {
2391            unstaged_diff: Default::default(),
2392            uncommitted_diff: Default::default(),
2393            recalculate_diff_task: Default::default(),
2394            language: Default::default(),
2395            language_registry: Default::default(),
2396            recalculating_tx: postage::watch::channel_with(false).0,
2397            hunk_staging_operation_count: 0,
2398            hunk_staging_operation_count_as_of_write: 0,
2399            head_text: Default::default(),
2400            index_text: Default::default(),
2401            head_changed: Default::default(),
2402            index_changed: Default::default(),
2403            language_changed: Default::default(),
2404            conflict_updated_futures: Default::default(),
2405            conflict_set: Default::default(),
2406            reparse_conflict_markers_task: Default::default(),
2407        }
2408    }
2409
2410    fn buffer_language_changed(&mut self, buffer: Entity<Buffer>, cx: &mut Context<Self>) {
2411        self.language = buffer.read(cx).language().cloned();
2412        self.language_changed = true;
2413        let _ = self.recalculate_diffs(buffer.read(cx).text_snapshot(), cx);
2414    }
2415
2416    fn reparse_conflict_markers(
2417        &mut self,
2418        buffer: text::BufferSnapshot,
2419        cx: &mut Context<Self>,
2420    ) -> oneshot::Receiver<()> {
2421        let (tx, rx) = oneshot::channel();
2422
2423        let Some(conflict_set) = self
2424            .conflict_set
2425            .as_ref()
2426            .and_then(|conflict_set| conflict_set.upgrade())
2427        else {
2428            return rx;
2429        };
2430
2431        let old_snapshot = conflict_set.read_with(cx, |conflict_set, _| {
2432            if conflict_set.has_conflict {
2433                Some(conflict_set.snapshot())
2434            } else {
2435                None
2436            }
2437        });
2438
2439        if let Some(old_snapshot) = old_snapshot {
2440            self.conflict_updated_futures.push(tx);
2441            self.reparse_conflict_markers_task = Some(cx.spawn(async move |this, cx| {
2442                let (snapshot, changed_range) = cx
2443                    .background_spawn(async move {
2444                        let new_snapshot = ConflictSet::parse(&buffer);
2445                        let changed_range = old_snapshot.compare(&new_snapshot, &buffer);
2446                        (new_snapshot, changed_range)
2447                    })
2448                    .await;
2449                this.update(cx, |this, cx| {
2450                    if let Some(conflict_set) = &this.conflict_set {
2451                        conflict_set
2452                            .update(cx, |conflict_set, cx| {
2453                                conflict_set.set_snapshot(snapshot, changed_range, cx);
2454                            })
2455                            .ok();
2456                    }
2457                    let futures = std::mem::take(&mut this.conflict_updated_futures);
2458                    for tx in futures {
2459                        tx.send(()).ok();
2460                    }
2461                })
2462            }))
2463        }
2464
2465        rx
2466    }
2467
2468    fn unstaged_diff(&self) -> Option<Entity<BufferDiff>> {
2469        self.unstaged_diff.as_ref().and_then(|set| set.upgrade())
2470    }
2471
2472    fn uncommitted_diff(&self) -> Option<Entity<BufferDiff>> {
2473        self.uncommitted_diff.as_ref().and_then(|set| set.upgrade())
2474    }
2475
2476    fn handle_base_texts_updated(
2477        &mut self,
2478        buffer: text::BufferSnapshot,
2479        message: proto::UpdateDiffBases,
2480        cx: &mut Context<Self>,
2481    ) {
2482        use proto::update_diff_bases::Mode;
2483
2484        let Some(mode) = Mode::from_i32(message.mode) else {
2485            return;
2486        };
2487
2488        let diff_bases_change = match mode {
2489            Mode::HeadOnly => DiffBasesChange::SetHead(message.committed_text),
2490            Mode::IndexOnly => DiffBasesChange::SetIndex(message.staged_text),
2491            Mode::IndexMatchesHead => DiffBasesChange::SetBoth(message.committed_text),
2492            Mode::IndexAndHead => DiffBasesChange::SetEach {
2493                index: message.staged_text,
2494                head: message.committed_text,
2495            },
2496        };
2497
2498        self.diff_bases_changed(buffer, Some(diff_bases_change), cx);
2499    }
2500
2501    pub fn wait_for_recalculation(&mut self) -> Option<impl Future<Output = ()> + use<>> {
2502        if *self.recalculating_tx.borrow() {
2503            let mut rx = self.recalculating_tx.subscribe();
2504            return Some(async move {
2505                loop {
2506                    let is_recalculating = rx.recv().await;
2507                    if is_recalculating != Some(true) {
2508                        break;
2509                    }
2510                }
2511            });
2512        } else {
2513            None
2514        }
2515    }
2516
2517    fn diff_bases_changed(
2518        &mut self,
2519        buffer: text::BufferSnapshot,
2520        diff_bases_change: Option<DiffBasesChange>,
2521        cx: &mut Context<Self>,
2522    ) {
2523        match diff_bases_change {
2524            Some(DiffBasesChange::SetIndex(index)) => {
2525                self.index_text = index.map(|mut index| {
2526                    text::LineEnding::normalize(&mut index);
2527                    Arc::new(index)
2528                });
2529                self.index_changed = true;
2530            }
2531            Some(DiffBasesChange::SetHead(head)) => {
2532                self.head_text = head.map(|mut head| {
2533                    text::LineEnding::normalize(&mut head);
2534                    Arc::new(head)
2535                });
2536                self.head_changed = true;
2537            }
2538            Some(DiffBasesChange::SetBoth(text)) => {
2539                let text = text.map(|mut text| {
2540                    text::LineEnding::normalize(&mut text);
2541                    Arc::new(text)
2542                });
2543                self.head_text = text.clone();
2544                self.index_text = text;
2545                self.head_changed = true;
2546                self.index_changed = true;
2547            }
2548            Some(DiffBasesChange::SetEach { index, head }) => {
2549                self.index_text = index.map(|mut index| {
2550                    text::LineEnding::normalize(&mut index);
2551                    Arc::new(index)
2552                });
2553                self.index_changed = true;
2554                self.head_text = head.map(|mut head| {
2555                    text::LineEnding::normalize(&mut head);
2556                    Arc::new(head)
2557                });
2558                self.head_changed = true;
2559            }
2560            None => {}
2561        }
2562
2563        self.recalculate_diffs(buffer, cx)
2564    }
2565
2566    fn recalculate_diffs(&mut self, buffer: text::BufferSnapshot, cx: &mut Context<Self>) {
2567        *self.recalculating_tx.borrow_mut() = true;
2568
2569        let language = self.language.clone();
2570        let language_registry = self.language_registry.clone();
2571        let unstaged_diff = self.unstaged_diff();
2572        let uncommitted_diff = self.uncommitted_diff();
2573        let head = self.head_text.clone();
2574        let index = self.index_text.clone();
2575        let index_changed = self.index_changed;
2576        let head_changed = self.head_changed;
2577        let language_changed = self.language_changed;
2578        let prev_hunk_staging_operation_count = self.hunk_staging_operation_count_as_of_write;
2579        let index_matches_head = match (self.index_text.as_ref(), self.head_text.as_ref()) {
2580            (Some(index), Some(head)) => Arc::ptr_eq(index, head),
2581            (None, None) => true,
2582            _ => false,
2583        };
2584        self.recalculate_diff_task = Some(cx.spawn(async move |this, cx| {
2585            log::debug!(
2586                "start recalculating diffs for buffer {}",
2587                buffer.remote_id()
2588            );
2589
2590            let mut new_unstaged_diff = None;
2591            if let Some(unstaged_diff) = &unstaged_diff {
2592                new_unstaged_diff = Some(
2593                    BufferDiff::update_diff(
2594                        unstaged_diff.clone(),
2595                        buffer.clone(),
2596                        index,
2597                        index_changed,
2598                        language_changed,
2599                        language.clone(),
2600                        language_registry.clone(),
2601                        cx,
2602                    )
2603                    .await?,
2604                );
2605            }
2606
2607            let mut new_uncommitted_diff = None;
2608            if let Some(uncommitted_diff) = &uncommitted_diff {
2609                new_uncommitted_diff = if index_matches_head {
2610                    new_unstaged_diff.clone()
2611                } else {
2612                    Some(
2613                        BufferDiff::update_diff(
2614                            uncommitted_diff.clone(),
2615                            buffer.clone(),
2616                            head,
2617                            head_changed,
2618                            language_changed,
2619                            language.clone(),
2620                            language_registry.clone(),
2621                            cx,
2622                        )
2623                        .await?,
2624                    )
2625                }
2626            }
2627
2628            let cancel = this.update(cx, |this, _| {
2629                // This checks whether all pending stage/unstage operations
2630                // have quiesced (i.e. both the corresponding write and the
2631                // read of that write have completed). If not, then we cancel
2632                // this recalculation attempt to avoid invalidating pending
2633                // state too quickly; another recalculation will come along
2634                // later and clear the pending state once the state of the index has settled.
2635                if this.hunk_staging_operation_count > prev_hunk_staging_operation_count {
2636                    *this.recalculating_tx.borrow_mut() = false;
2637                    true
2638                } else {
2639                    false
2640                }
2641            })?;
2642            if cancel {
2643                log::debug!(
2644                    concat!(
2645                        "aborting recalculating diffs for buffer {}",
2646                        "due to subsequent hunk operations",
2647                    ),
2648                    buffer.remote_id()
2649                );
2650                return Ok(());
2651            }
2652
2653            let unstaged_changed_range = if let Some((unstaged_diff, new_unstaged_diff)) =
2654                unstaged_diff.as_ref().zip(new_unstaged_diff.clone())
2655            {
2656                unstaged_diff.update(cx, |diff, cx| {
2657                    if language_changed {
2658                        diff.language_changed(cx);
2659                    }
2660                    diff.set_snapshot(new_unstaged_diff, &buffer, cx)
2661                })?
2662            } else {
2663                None
2664            };
2665
2666            if let Some((uncommitted_diff, new_uncommitted_diff)) =
2667                uncommitted_diff.as_ref().zip(new_uncommitted_diff.clone())
2668            {
2669                uncommitted_diff.update(cx, |diff, cx| {
2670                    if language_changed {
2671                        diff.language_changed(cx);
2672                    }
2673                    diff.set_snapshot_with_secondary(
2674                        new_uncommitted_diff,
2675                        &buffer,
2676                        unstaged_changed_range,
2677                        true,
2678                        cx,
2679                    );
2680                })?;
2681            }
2682
2683            log::debug!(
2684                "finished recalculating diffs for buffer {}",
2685                buffer.remote_id()
2686            );
2687
2688            if let Some(this) = this.upgrade() {
2689                this.update(cx, |this, _| {
2690                    this.index_changed = false;
2691                    this.head_changed = false;
2692                    this.language_changed = false;
2693                    *this.recalculating_tx.borrow_mut() = false;
2694                })?;
2695            }
2696
2697            Ok(())
2698        }));
2699    }
2700}
2701
2702fn make_remote_delegate(
2703    this: Entity<GitStore>,
2704    project_id: u64,
2705    repository_id: RepositoryId,
2706    askpass_id: u64,
2707    cx: &mut AsyncApp,
2708) -> AskPassDelegate {
2709    AskPassDelegate::new(cx, move |prompt, tx, cx| {
2710        this.update(cx, |this, cx| {
2711            let Some((client, _)) = this.downstream_client() else {
2712                return;
2713            };
2714            let response = client.request(proto::AskPassRequest {
2715                project_id,
2716                repository_id: repository_id.to_proto(),
2717                askpass_id,
2718                prompt,
2719            });
2720            cx.spawn(async move |_, _| {
2721                tx.send(response.await?.response).ok();
2722                anyhow::Ok(())
2723            })
2724            .detach_and_log_err(cx);
2725        })
2726        .log_err();
2727    })
2728}
2729
2730impl RepositoryId {
2731    pub fn to_proto(self) -> u64 {
2732        self.0
2733    }
2734
2735    pub fn from_proto(id: u64) -> Self {
2736        RepositoryId(id)
2737    }
2738}
2739
2740impl RepositorySnapshot {
2741    fn empty(id: RepositoryId, work_directory_abs_path: Arc<Path>) -> Self {
2742        Self {
2743            id,
2744            statuses_by_path: Default::default(),
2745            work_directory_abs_path,
2746            branch: None,
2747            head_commit: None,
2748            scan_id: 0,
2749            merge: Default::default(),
2750            remote_origin_url: None,
2751            remote_upstream_url: None,
2752        }
2753    }
2754
2755    fn initial_update(&self, project_id: u64) -> proto::UpdateRepository {
2756        proto::UpdateRepository {
2757            branch_summary: self.branch.as_ref().map(branch_to_proto),
2758            head_commit_details: self.head_commit.as_ref().map(commit_details_to_proto),
2759            updated_statuses: self
2760                .statuses_by_path
2761                .iter()
2762                .map(|entry| entry.to_proto())
2763                .collect(),
2764            removed_statuses: Default::default(),
2765            current_merge_conflicts: self
2766                .merge
2767                .conflicted_paths
2768                .iter()
2769                .map(|repo_path| repo_path.to_proto())
2770                .collect(),
2771            merge_message: self.merge.message.as_ref().map(|msg| msg.to_string()),
2772            project_id,
2773            id: self.id.to_proto(),
2774            abs_path: self.work_directory_abs_path.to_proto(),
2775            entry_ids: vec![self.id.to_proto()],
2776            scan_id: self.scan_id,
2777            is_last_update: true,
2778        }
2779    }
2780
2781    fn build_update(&self, old: &Self, project_id: u64) -> proto::UpdateRepository {
2782        let mut updated_statuses: Vec<proto::StatusEntry> = Vec::new();
2783        let mut removed_statuses: Vec<String> = Vec::new();
2784
2785        let mut new_statuses = self.statuses_by_path.iter().peekable();
2786        let mut old_statuses = old.statuses_by_path.iter().peekable();
2787
2788        let mut current_new_entry = new_statuses.next();
2789        let mut current_old_entry = old_statuses.next();
2790        loop {
2791            match (current_new_entry, current_old_entry) {
2792                (Some(new_entry), Some(old_entry)) => {
2793                    match new_entry.repo_path.cmp(&old_entry.repo_path) {
2794                        Ordering::Less => {
2795                            updated_statuses.push(new_entry.to_proto());
2796                            current_new_entry = new_statuses.next();
2797                        }
2798                        Ordering::Equal => {
2799                            if new_entry.status != old_entry.status {
2800                                updated_statuses.push(new_entry.to_proto());
2801                            }
2802                            current_old_entry = old_statuses.next();
2803                            current_new_entry = new_statuses.next();
2804                        }
2805                        Ordering::Greater => {
2806                            removed_statuses.push(old_entry.repo_path.as_ref().to_proto());
2807                            current_old_entry = old_statuses.next();
2808                        }
2809                    }
2810                }
2811                (None, Some(old_entry)) => {
2812                    removed_statuses.push(old_entry.repo_path.as_ref().to_proto());
2813                    current_old_entry = old_statuses.next();
2814                }
2815                (Some(new_entry), None) => {
2816                    updated_statuses.push(new_entry.to_proto());
2817                    current_new_entry = new_statuses.next();
2818                }
2819                (None, None) => break,
2820            }
2821        }
2822
2823        proto::UpdateRepository {
2824            branch_summary: self.branch.as_ref().map(branch_to_proto),
2825            head_commit_details: self.head_commit.as_ref().map(commit_details_to_proto),
2826            updated_statuses,
2827            removed_statuses,
2828            current_merge_conflicts: self
2829                .merge
2830                .conflicted_paths
2831                .iter()
2832                .map(|path| path.as_ref().to_proto())
2833                .collect(),
2834            merge_message: self.merge.message.as_ref().map(|msg| msg.to_string()),
2835            project_id,
2836            id: self.id.to_proto(),
2837            abs_path: self.work_directory_abs_path.to_proto(),
2838            entry_ids: vec![],
2839            scan_id: self.scan_id,
2840            is_last_update: true,
2841        }
2842    }
2843
2844    pub fn status(&self) -> impl Iterator<Item = StatusEntry> + '_ {
2845        self.statuses_by_path.iter().cloned()
2846    }
2847
2848    pub fn status_summary(&self) -> GitSummary {
2849        self.statuses_by_path.summary().item_summary
2850    }
2851
2852    pub fn status_for_path(&self, path: &RepoPath) -> Option<StatusEntry> {
2853        self.statuses_by_path
2854            .get(&PathKey(path.0.clone()), &())
2855            .cloned()
2856    }
2857
2858    pub fn abs_path_to_repo_path(&self, abs_path: &Path) -> Option<RepoPath> {
2859        Self::abs_path_to_repo_path_inner(&self.work_directory_abs_path, abs_path)
2860    }
2861
2862    #[inline]
2863    fn abs_path_to_repo_path_inner(
2864        work_directory_abs_path: &Path,
2865        abs_path: &Path,
2866    ) -> Option<RepoPath> {
2867        abs_path
2868            .strip_prefix(&work_directory_abs_path)
2869            .map(RepoPath::from)
2870            .ok()
2871    }
2872
2873    pub fn had_conflict_on_last_merge_head_change(&self, repo_path: &RepoPath) -> bool {
2874        self.merge.conflicted_paths.contains(repo_path)
2875    }
2876
2877    pub fn has_conflict(&self, repo_path: &RepoPath) -> bool {
2878        let had_conflict_on_last_merge_head_change =
2879            self.merge.conflicted_paths.contains(repo_path);
2880        let has_conflict_currently = self
2881            .status_for_path(repo_path)
2882            .map_or(false, |entry| entry.status.is_conflicted());
2883        had_conflict_on_last_merge_head_change || has_conflict_currently
2884    }
2885
2886    /// This is the name that will be displayed in the repository selector for this repository.
2887    pub fn display_name(&self) -> SharedString {
2888        self.work_directory_abs_path
2889            .file_name()
2890            .unwrap_or_default()
2891            .to_string_lossy()
2892            .to_string()
2893            .into()
2894    }
2895}
2896
2897impl MergeDetails {
2898    async fn load(
2899        backend: &Arc<dyn GitRepository>,
2900        status: &SumTree<StatusEntry>,
2901        prev_snapshot: &RepositorySnapshot,
2902    ) -> Result<(MergeDetails, bool)> {
2903        log::debug!("load merge details");
2904        let message = backend.merge_message().await;
2905        let heads = backend
2906            .revparse_batch(vec![
2907                "MERGE_HEAD".into(),
2908                "CHERRY_PICK_HEAD".into(),
2909                "REBASE_HEAD".into(),
2910                "REVERT_HEAD".into(),
2911                "APPLY_HEAD".into(),
2912            ])
2913            .await
2914            .log_err()
2915            .unwrap_or_default()
2916            .into_iter()
2917            .map(|opt| opt.map(SharedString::from))
2918            .collect::<Vec<_>>();
2919        let merge_heads_changed = heads != prev_snapshot.merge.heads;
2920        let conflicted_paths = if merge_heads_changed {
2921            let current_conflicted_paths = TreeSet::from_ordered_entries(
2922                status
2923                    .iter()
2924                    .filter(|entry| entry.status.is_conflicted())
2925                    .map(|entry| entry.repo_path.clone()),
2926            );
2927
2928            // It can happen that we run a scan while a lengthy merge is in progress
2929            // that will eventually result in conflicts, but before those conflicts
2930            // are reported by `git status`. Since for the moment we only care about
2931            // the merge heads state for the purposes of tracking conflicts, don't update
2932            // this state until we see some conflicts.
2933            if heads.iter().any(Option::is_some)
2934                && !prev_snapshot.merge.heads.iter().any(Option::is_some)
2935                && current_conflicted_paths.is_empty()
2936            {
2937                log::debug!("not updating merge heads because no conflicts found");
2938                return Ok((
2939                    MergeDetails {
2940                        message: message.map(SharedString::from),
2941                        ..prev_snapshot.merge.clone()
2942                    },
2943                    false,
2944                ));
2945            }
2946
2947            current_conflicted_paths
2948        } else {
2949            prev_snapshot.merge.conflicted_paths.clone()
2950        };
2951        let details = MergeDetails {
2952            conflicted_paths,
2953            message: message.map(SharedString::from),
2954            heads,
2955        };
2956        Ok((details, merge_heads_changed))
2957    }
2958}
2959
2960impl Repository {
2961    pub fn snapshot(&self) -> RepositorySnapshot {
2962        self.snapshot.clone()
2963    }
2964
2965    fn local(
2966        id: RepositoryId,
2967        work_directory_abs_path: Arc<Path>,
2968        dot_git_abs_path: Arc<Path>,
2969        repository_dir_abs_path: Arc<Path>,
2970        common_dir_abs_path: Arc<Path>,
2971        project_environment: WeakEntity<ProjectEnvironment>,
2972        fs: Arc<dyn Fs>,
2973        git_store: WeakEntity<GitStore>,
2974        cx: &mut Context<Self>,
2975    ) -> Self {
2976        let snapshot = RepositorySnapshot::empty(id, work_directory_abs_path.clone());
2977        Repository {
2978            this: cx.weak_entity(),
2979            git_store,
2980            snapshot,
2981            commit_message_buffer: None,
2982            askpass_delegates: Default::default(),
2983            paths_needing_status_update: Default::default(),
2984            latest_askpass_id: 0,
2985            job_sender: Repository::spawn_local_git_worker(
2986                work_directory_abs_path,
2987                dot_git_abs_path,
2988                repository_dir_abs_path,
2989                common_dir_abs_path,
2990                project_environment,
2991                fs,
2992                cx,
2993            ),
2994            job_id: 0,
2995            active_jobs: Default::default(),
2996        }
2997    }
2998
2999    fn remote(
3000        id: RepositoryId,
3001        work_directory_abs_path: Arc<Path>,
3002        project_id: ProjectId,
3003        client: AnyProtoClient,
3004        git_store: WeakEntity<GitStore>,
3005        cx: &mut Context<Self>,
3006    ) -> Self {
3007        let snapshot = RepositorySnapshot::empty(id, work_directory_abs_path);
3008        Self {
3009            this: cx.weak_entity(),
3010            snapshot,
3011            commit_message_buffer: None,
3012            git_store,
3013            paths_needing_status_update: Default::default(),
3014            job_sender: Self::spawn_remote_git_worker(project_id, client, cx),
3015            askpass_delegates: Default::default(),
3016            latest_askpass_id: 0,
3017            active_jobs: Default::default(),
3018            job_id: 0,
3019        }
3020    }
3021
3022    pub fn git_store(&self) -> Option<Entity<GitStore>> {
3023        self.git_store.upgrade()
3024    }
3025
3026    fn reload_buffer_diff_bases(&mut self, cx: &mut Context<Self>) {
3027        let this = cx.weak_entity();
3028        let git_store = self.git_store.clone();
3029        let _ = self.send_keyed_job(
3030            Some(GitJobKey::ReloadBufferDiffBases),
3031            None,
3032            |state, mut cx| async move {
3033                let RepositoryState::Local { backend, .. } = state else {
3034                    log::error!("tried to recompute diffs for a non-local repository");
3035                    return Ok(());
3036                };
3037
3038                let Some(this) = this.upgrade() else {
3039                    return Ok(());
3040                };
3041
3042                let repo_diff_state_updates = this.update(&mut cx, |this, cx| {
3043                    git_store.update(cx, |git_store, cx| {
3044                        git_store
3045                            .diffs
3046                            .iter()
3047                            .filter_map(|(buffer_id, diff_state)| {
3048                                let buffer_store = git_store.buffer_store.read(cx);
3049                                let buffer = buffer_store.get(*buffer_id)?;
3050                                let file = File::from_dyn(buffer.read(cx).file())?;
3051                                let abs_path =
3052                                    file.worktree.read(cx).absolutize(&file.path).ok()?;
3053                                let repo_path = this.abs_path_to_repo_path(&abs_path)?;
3054                                log::debug!(
3055                                    "start reload diff bases for repo path {}",
3056                                    repo_path.0.display()
3057                                );
3058                                diff_state.update(cx, |diff_state, _| {
3059                                    let has_unstaged_diff = diff_state
3060                                        .unstaged_diff
3061                                        .as_ref()
3062                                        .is_some_and(|diff| diff.is_upgradable());
3063                                    let has_uncommitted_diff = diff_state
3064                                        .uncommitted_diff
3065                                        .as_ref()
3066                                        .is_some_and(|set| set.is_upgradable());
3067
3068                                    Some((
3069                                        buffer,
3070                                        repo_path,
3071                                        has_unstaged_diff.then(|| diff_state.index_text.clone()),
3072                                        has_uncommitted_diff.then(|| diff_state.head_text.clone()),
3073                                    ))
3074                                })
3075                            })
3076                            .collect::<Vec<_>>()
3077                    })
3078                })??;
3079
3080                let buffer_diff_base_changes = cx
3081                    .background_spawn(async move {
3082                        let mut changes = Vec::new();
3083                        for (buffer, repo_path, current_index_text, current_head_text) in
3084                            &repo_diff_state_updates
3085                        {
3086                            let index_text = if current_index_text.is_some() {
3087                                backend.load_index_text(repo_path.clone()).await
3088                            } else {
3089                                None
3090                            };
3091                            let head_text = if current_head_text.is_some() {
3092                                backend.load_committed_text(repo_path.clone()).await
3093                            } else {
3094                                None
3095                            };
3096
3097                            let change =
3098                                match (current_index_text.as_ref(), current_head_text.as_ref()) {
3099                                    (Some(current_index), Some(current_head)) => {
3100                                        let index_changed =
3101                                            index_text.as_ref() != current_index.as_deref();
3102                                        let head_changed =
3103                                            head_text.as_ref() != current_head.as_deref();
3104                                        if index_changed && head_changed {
3105                                            if index_text == head_text {
3106                                                Some(DiffBasesChange::SetBoth(head_text))
3107                                            } else {
3108                                                Some(DiffBasesChange::SetEach {
3109                                                    index: index_text,
3110                                                    head: head_text,
3111                                                })
3112                                            }
3113                                        } else if index_changed {
3114                                            Some(DiffBasesChange::SetIndex(index_text))
3115                                        } else if head_changed {
3116                                            Some(DiffBasesChange::SetHead(head_text))
3117                                        } else {
3118                                            None
3119                                        }
3120                                    }
3121                                    (Some(current_index), None) => {
3122                                        let index_changed =
3123                                            index_text.as_ref() != current_index.as_deref();
3124                                        index_changed
3125                                            .then_some(DiffBasesChange::SetIndex(index_text))
3126                                    }
3127                                    (None, Some(current_head)) => {
3128                                        let head_changed =
3129                                            head_text.as_ref() != current_head.as_deref();
3130                                        head_changed.then_some(DiffBasesChange::SetHead(head_text))
3131                                    }
3132                                    (None, None) => None,
3133                                };
3134
3135                            changes.push((buffer.clone(), change))
3136                        }
3137                        changes
3138                    })
3139                    .await;
3140
3141                git_store.update(&mut cx, |git_store, cx| {
3142                    for (buffer, diff_bases_change) in buffer_diff_base_changes {
3143                        let buffer_snapshot = buffer.read(cx).text_snapshot();
3144                        let buffer_id = buffer_snapshot.remote_id();
3145                        let Some(diff_state) = git_store.diffs.get(&buffer_id) else {
3146                            continue;
3147                        };
3148
3149                        let downstream_client = git_store.downstream_client();
3150                        diff_state.update(cx, |diff_state, cx| {
3151                            use proto::update_diff_bases::Mode;
3152
3153                            if let Some((diff_bases_change, (client, project_id))) =
3154                                diff_bases_change.clone().zip(downstream_client)
3155                            {
3156                                let (staged_text, committed_text, mode) = match diff_bases_change {
3157                                    DiffBasesChange::SetIndex(index) => {
3158                                        (index, None, Mode::IndexOnly)
3159                                    }
3160                                    DiffBasesChange::SetHead(head) => (None, head, Mode::HeadOnly),
3161                                    DiffBasesChange::SetEach { index, head } => {
3162                                        (index, head, Mode::IndexAndHead)
3163                                    }
3164                                    DiffBasesChange::SetBoth(text) => {
3165                                        (None, text, Mode::IndexMatchesHead)
3166                                    }
3167                                };
3168                                client
3169                                    .send(proto::UpdateDiffBases {
3170                                        project_id: project_id.to_proto(),
3171                                        buffer_id: buffer_id.to_proto(),
3172                                        staged_text,
3173                                        committed_text,
3174                                        mode: mode as i32,
3175                                    })
3176                                    .log_err();
3177                            }
3178
3179                            diff_state.diff_bases_changed(buffer_snapshot, diff_bases_change, cx);
3180                        });
3181                    }
3182                })
3183            },
3184        );
3185    }
3186
3187    pub fn send_job<F, Fut, R>(
3188        &mut self,
3189        status: Option<SharedString>,
3190        job: F,
3191    ) -> oneshot::Receiver<R>
3192    where
3193        F: FnOnce(RepositoryState, AsyncApp) -> Fut + 'static,
3194        Fut: Future<Output = R> + 'static,
3195        R: Send + 'static,
3196    {
3197        self.send_keyed_job(None, status, job)
3198    }
3199
3200    fn send_keyed_job<F, Fut, R>(
3201        &mut self,
3202        key: Option<GitJobKey>,
3203        status: Option<SharedString>,
3204        job: F,
3205    ) -> oneshot::Receiver<R>
3206    where
3207        F: FnOnce(RepositoryState, AsyncApp) -> Fut + 'static,
3208        Fut: Future<Output = R> + 'static,
3209        R: Send + 'static,
3210    {
3211        let (result_tx, result_rx) = futures::channel::oneshot::channel();
3212        let job_id = post_inc(&mut self.job_id);
3213        let this = self.this.clone();
3214        self.job_sender
3215            .unbounded_send(GitJob {
3216                key,
3217                job: Box::new(move |state, cx: &mut AsyncApp| {
3218                    let job = job(state, cx.clone());
3219                    cx.spawn(async move |cx| {
3220                        if let Some(s) = status.clone() {
3221                            this.update(cx, |this, cx| {
3222                                this.active_jobs.insert(
3223                                    job_id,
3224                                    JobInfo {
3225                                        start: Instant::now(),
3226                                        message: s.clone(),
3227                                    },
3228                                );
3229
3230                                cx.notify();
3231                            })
3232                            .ok();
3233                        }
3234                        let result = job.await;
3235
3236                        this.update(cx, |this, cx| {
3237                            this.active_jobs.remove(&job_id);
3238                            cx.notify();
3239                        })
3240                        .ok();
3241
3242                        result_tx.send(result).ok();
3243                    })
3244                }),
3245            })
3246            .ok();
3247        result_rx
3248    }
3249
3250    pub fn set_as_active_repository(&self, cx: &mut Context<Self>) {
3251        let Some(git_store) = self.git_store.upgrade() else {
3252            return;
3253        };
3254        let entity = cx.entity();
3255        git_store.update(cx, |git_store, cx| {
3256            let Some((&id, _)) = git_store
3257                .repositories
3258                .iter()
3259                .find(|(_, handle)| *handle == &entity)
3260            else {
3261                return;
3262            };
3263            git_store.active_repo_id = Some(id);
3264            cx.emit(GitStoreEvent::ActiveRepositoryChanged(Some(id)));
3265        });
3266    }
3267
3268    pub fn cached_status(&self) -> impl '_ + Iterator<Item = StatusEntry> {
3269        self.snapshot.status()
3270    }
3271
3272    pub fn repo_path_to_project_path(&self, path: &RepoPath, cx: &App) -> Option<ProjectPath> {
3273        let git_store = self.git_store.upgrade()?;
3274        let worktree_store = git_store.read(cx).worktree_store.read(cx);
3275        let abs_path = self.snapshot.work_directory_abs_path.join(&path.0);
3276        let (worktree, relative_path) = worktree_store.find_worktree(abs_path, cx)?;
3277        Some(ProjectPath {
3278            worktree_id: worktree.read(cx).id(),
3279            path: relative_path.into(),
3280        })
3281    }
3282
3283    pub fn project_path_to_repo_path(&self, path: &ProjectPath, cx: &App) -> Option<RepoPath> {
3284        let git_store = self.git_store.upgrade()?;
3285        let worktree_store = git_store.read(cx).worktree_store.read(cx);
3286        let abs_path = worktree_store.absolutize(path, cx)?;
3287        self.snapshot.abs_path_to_repo_path(&abs_path)
3288    }
3289
3290    pub fn contains_sub_repo(&self, other: &Entity<Self>, cx: &App) -> bool {
3291        other
3292            .read(cx)
3293            .snapshot
3294            .work_directory_abs_path
3295            .starts_with(&self.snapshot.work_directory_abs_path)
3296    }
3297
3298    pub fn open_commit_buffer(
3299        &mut self,
3300        languages: Option<Arc<LanguageRegistry>>,
3301        buffer_store: Entity<BufferStore>,
3302        cx: &mut Context<Self>,
3303    ) -> Task<Result<Entity<Buffer>>> {
3304        let id = self.id;
3305        if let Some(buffer) = self.commit_message_buffer.clone() {
3306            return Task::ready(Ok(buffer));
3307        }
3308        let this = cx.weak_entity();
3309
3310        let rx = self.send_job(None, move |state, mut cx| async move {
3311            let Some(this) = this.upgrade() else {
3312                bail!("git store was dropped");
3313            };
3314            match state {
3315                RepositoryState::Local { .. } => {
3316                    this.update(&mut cx, |_, cx| {
3317                        Self::open_local_commit_buffer(languages, buffer_store, cx)
3318                    })?
3319                    .await
3320                }
3321                RepositoryState::Remote { project_id, client } => {
3322                    let request = client.request(proto::OpenCommitMessageBuffer {
3323                        project_id: project_id.0,
3324                        repository_id: id.to_proto(),
3325                    });
3326                    let response = request.await.context("requesting to open commit buffer")?;
3327                    let buffer_id = BufferId::new(response.buffer_id)?;
3328                    let buffer = buffer_store
3329                        .update(&mut cx, |buffer_store, cx| {
3330                            buffer_store.wait_for_remote_buffer(buffer_id, cx)
3331                        })?
3332                        .await?;
3333                    if let Some(language_registry) = languages {
3334                        let git_commit_language =
3335                            language_registry.language_for_name("Git Commit").await?;
3336                        buffer.update(&mut cx, |buffer, cx| {
3337                            buffer.set_language(Some(git_commit_language), cx);
3338                        })?;
3339                    }
3340                    this.update(&mut cx, |this, _| {
3341                        this.commit_message_buffer = Some(buffer.clone());
3342                    })?;
3343                    Ok(buffer)
3344                }
3345            }
3346        });
3347
3348        cx.spawn(|_, _: &mut AsyncApp| async move { rx.await? })
3349    }
3350
3351    fn open_local_commit_buffer(
3352        language_registry: Option<Arc<LanguageRegistry>>,
3353        buffer_store: Entity<BufferStore>,
3354        cx: &mut Context<Self>,
3355    ) -> Task<Result<Entity<Buffer>>> {
3356        cx.spawn(async move |repository, cx| {
3357            let buffer = buffer_store
3358                .update(cx, |buffer_store, cx| buffer_store.create_buffer(cx))?
3359                .await?;
3360
3361            if let Some(language_registry) = language_registry {
3362                let git_commit_language = language_registry.language_for_name("Git Commit").await?;
3363                buffer.update(cx, |buffer, cx| {
3364                    buffer.set_language(Some(git_commit_language), cx);
3365                })?;
3366            }
3367
3368            repository.update(cx, |repository, _| {
3369                repository.commit_message_buffer = Some(buffer.clone());
3370            })?;
3371            Ok(buffer)
3372        })
3373    }
3374
3375    pub fn checkout_files(
3376        &mut self,
3377        commit: &str,
3378        paths: Vec<RepoPath>,
3379        _cx: &mut App,
3380    ) -> oneshot::Receiver<Result<()>> {
3381        let commit = commit.to_string();
3382        let id = self.id;
3383
3384        self.send_job(
3385            Some(format!("git checkout {}", commit).into()),
3386            move |git_repo, _| async move {
3387                match git_repo {
3388                    RepositoryState::Local {
3389                        backend,
3390                        environment,
3391                        ..
3392                    } => {
3393                        backend
3394                            .checkout_files(commit, paths, environment.clone())
3395                            .await
3396                    }
3397                    RepositoryState::Remote { project_id, client } => {
3398                        client
3399                            .request(proto::GitCheckoutFiles {
3400                                project_id: project_id.0,
3401                                repository_id: id.to_proto(),
3402                                commit,
3403                                paths: paths
3404                                    .into_iter()
3405                                    .map(|p| p.to_string_lossy().to_string())
3406                                    .collect(),
3407                            })
3408                            .await?;
3409
3410                        Ok(())
3411                    }
3412                }
3413            },
3414        )
3415    }
3416
3417    pub fn reset(
3418        &mut self,
3419        commit: String,
3420        reset_mode: ResetMode,
3421        _cx: &mut App,
3422    ) -> oneshot::Receiver<Result<()>> {
3423        let commit = commit.to_string();
3424        let id = self.id;
3425
3426        self.send_job(None, move |git_repo, _| async move {
3427            match git_repo {
3428                RepositoryState::Local {
3429                    backend,
3430                    environment,
3431                    ..
3432                } => backend.reset(commit, reset_mode, environment).await,
3433                RepositoryState::Remote { project_id, client } => {
3434                    client
3435                        .request(proto::GitReset {
3436                            project_id: project_id.0,
3437                            repository_id: id.to_proto(),
3438                            commit,
3439                            mode: match reset_mode {
3440                                ResetMode::Soft => git_reset::ResetMode::Soft.into(),
3441                                ResetMode::Mixed => git_reset::ResetMode::Mixed.into(),
3442                            },
3443                        })
3444                        .await?;
3445
3446                    Ok(())
3447                }
3448            }
3449        })
3450    }
3451
3452    pub fn show(&mut self, commit: String) -> oneshot::Receiver<Result<CommitDetails>> {
3453        let id = self.id;
3454        self.send_job(None, move |git_repo, _cx| async move {
3455            match git_repo {
3456                RepositoryState::Local { backend, .. } => backend.show(commit).await,
3457                RepositoryState::Remote { project_id, client } => {
3458                    let resp = client
3459                        .request(proto::GitShow {
3460                            project_id: project_id.0,
3461                            repository_id: id.to_proto(),
3462                            commit,
3463                        })
3464                        .await?;
3465
3466                    Ok(CommitDetails {
3467                        sha: resp.sha.into(),
3468                        message: resp.message.into(),
3469                        commit_timestamp: resp.commit_timestamp,
3470                        author_email: resp.author_email.into(),
3471                        author_name: resp.author_name.into(),
3472                    })
3473                }
3474            }
3475        })
3476    }
3477
3478    pub fn load_commit_diff(&mut self, commit: String) -> oneshot::Receiver<Result<CommitDiff>> {
3479        let id = self.id;
3480        self.send_job(None, move |git_repo, cx| async move {
3481            match git_repo {
3482                RepositoryState::Local { backend, .. } => backend.load_commit(commit, cx).await,
3483                RepositoryState::Remote {
3484                    client, project_id, ..
3485                } => {
3486                    let response = client
3487                        .request(proto::LoadCommitDiff {
3488                            project_id: project_id.0,
3489                            repository_id: id.to_proto(),
3490                            commit,
3491                        })
3492                        .await?;
3493                    Ok(CommitDiff {
3494                        files: response
3495                            .files
3496                            .into_iter()
3497                            .map(|file| CommitFile {
3498                                path: Path::new(&file.path).into(),
3499                                old_text: file.old_text,
3500                                new_text: file.new_text,
3501                            })
3502                            .collect(),
3503                    })
3504                }
3505            }
3506        })
3507    }
3508
3509    fn buffer_store(&self, cx: &App) -> Option<Entity<BufferStore>> {
3510        Some(self.git_store.upgrade()?.read(cx).buffer_store.clone())
3511    }
3512
3513    pub fn stage_entries(
3514        &self,
3515        entries: Vec<RepoPath>,
3516        cx: &mut Context<Self>,
3517    ) -> Task<anyhow::Result<()>> {
3518        if entries.is_empty() {
3519            return Task::ready(Ok(()));
3520        }
3521        let id = self.id;
3522
3523        let mut save_futures = Vec::new();
3524        if let Some(buffer_store) = self.buffer_store(cx) {
3525            buffer_store.update(cx, |buffer_store, cx| {
3526                for path in &entries {
3527                    let Some(project_path) = self.repo_path_to_project_path(path, cx) else {
3528                        continue;
3529                    };
3530                    if let Some(buffer) = buffer_store.get_by_path(&project_path)
3531                        && buffer
3532                            .read(cx)
3533                            .file()
3534                            .map_or(false, |file| file.disk_state().exists())
3535                    {
3536                        save_futures.push(buffer_store.save_buffer(buffer, cx));
3537                    }
3538                }
3539            })
3540        }
3541
3542        cx.spawn(async move |this, cx| {
3543            for save_future in save_futures {
3544                save_future.await?;
3545            }
3546
3547            this.update(cx, |this, _| {
3548                this.send_job(None, move |git_repo, _cx| async move {
3549                    match git_repo {
3550                        RepositoryState::Local {
3551                            backend,
3552                            environment,
3553                            ..
3554                        } => backend.stage_paths(entries, environment.clone()).await,
3555                        RepositoryState::Remote { project_id, client } => {
3556                            client
3557                                .request(proto::Stage {
3558                                    project_id: project_id.0,
3559                                    repository_id: id.to_proto(),
3560                                    paths: entries
3561                                        .into_iter()
3562                                        .map(|repo_path| repo_path.as_ref().to_proto())
3563                                        .collect(),
3564                                })
3565                                .await
3566                                .context("sending stage request")?;
3567
3568                            Ok(())
3569                        }
3570                    }
3571                })
3572            })?
3573            .await??;
3574
3575            Ok(())
3576        })
3577    }
3578
3579    pub fn unstage_entries(
3580        &self,
3581        entries: Vec<RepoPath>,
3582        cx: &mut Context<Self>,
3583    ) -> Task<anyhow::Result<()>> {
3584        if entries.is_empty() {
3585            return Task::ready(Ok(()));
3586        }
3587        let id = self.id;
3588
3589        let mut save_futures = Vec::new();
3590        if let Some(buffer_store) = self.buffer_store(cx) {
3591            buffer_store.update(cx, |buffer_store, cx| {
3592                for path in &entries {
3593                    let Some(project_path) = self.repo_path_to_project_path(path, cx) else {
3594                        continue;
3595                    };
3596                    if let Some(buffer) = buffer_store.get_by_path(&project_path)
3597                        && buffer
3598                            .read(cx)
3599                            .file()
3600                            .map_or(false, |file| file.disk_state().exists())
3601                    {
3602                        save_futures.push(buffer_store.save_buffer(buffer, cx));
3603                    }
3604                }
3605            })
3606        }
3607
3608        cx.spawn(async move |this, cx| {
3609            for save_future in save_futures {
3610                save_future.await?;
3611            }
3612
3613            this.update(cx, |this, _| {
3614                this.send_job(None, move |git_repo, _cx| async move {
3615                    match git_repo {
3616                        RepositoryState::Local {
3617                            backend,
3618                            environment,
3619                            ..
3620                        } => backend.unstage_paths(entries, environment).await,
3621                        RepositoryState::Remote { project_id, client } => {
3622                            client
3623                                .request(proto::Unstage {
3624                                    project_id: project_id.0,
3625                                    repository_id: id.to_proto(),
3626                                    paths: entries
3627                                        .into_iter()
3628                                        .map(|repo_path| repo_path.as_ref().to_proto())
3629                                        .collect(),
3630                                })
3631                                .await
3632                                .context("sending unstage request")?;
3633
3634                            Ok(())
3635                        }
3636                    }
3637                })
3638            })?
3639            .await??;
3640
3641            Ok(())
3642        })
3643    }
3644
3645    pub fn stage_all(&self, cx: &mut Context<Self>) -> Task<anyhow::Result<()>> {
3646        let to_stage = self
3647            .cached_status()
3648            .filter(|entry| !entry.status.staging().is_fully_staged())
3649            .map(|entry| entry.repo_path.clone())
3650            .collect();
3651        self.stage_entries(to_stage, cx)
3652    }
3653
3654    pub fn unstage_all(&self, cx: &mut Context<Self>) -> Task<anyhow::Result<()>> {
3655        let to_unstage = self
3656            .cached_status()
3657            .filter(|entry| entry.status.staging().has_staged())
3658            .map(|entry| entry.repo_path.clone())
3659            .collect();
3660        self.unstage_entries(to_unstage, cx)
3661    }
3662
3663    pub fn stash_all(&mut self, cx: &mut Context<Self>) -> Task<anyhow::Result<()>> {
3664        let to_stash = self
3665            .cached_status()
3666            .map(|entry| entry.repo_path.clone())
3667            .collect();
3668
3669        self.stash_entries(to_stash, cx)
3670    }
3671
3672    pub fn stash_entries(
3673        &mut self,
3674        entries: Vec<RepoPath>,
3675        cx: &mut Context<Self>,
3676    ) -> Task<anyhow::Result<()>> {
3677        let id = self.id;
3678
3679        cx.spawn(async move |this, cx| {
3680            this.update(cx, |this, _| {
3681                this.send_job(None, move |git_repo, _cx| async move {
3682                    match git_repo {
3683                        RepositoryState::Local {
3684                            backend,
3685                            environment,
3686                            ..
3687                        } => backend.stash_paths(entries, environment).await,
3688                        RepositoryState::Remote { project_id, client } => {
3689                            client
3690                                .request(proto::Stash {
3691                                    project_id: project_id.0,
3692                                    repository_id: id.to_proto(),
3693                                    paths: entries
3694                                        .into_iter()
3695                                        .map(|repo_path| repo_path.as_ref().to_proto())
3696                                        .collect(),
3697                                })
3698                                .await
3699                                .context("sending stash request")?;
3700                            Ok(())
3701                        }
3702                    }
3703                })
3704            })?
3705            .await??;
3706            Ok(())
3707        })
3708    }
3709
3710    pub fn stash_pop(&mut self, cx: &mut Context<Self>) -> Task<anyhow::Result<()>> {
3711        let id = self.id;
3712        cx.spawn(async move |this, cx| {
3713            this.update(cx, |this, _| {
3714                this.send_job(None, move |git_repo, _cx| async move {
3715                    match git_repo {
3716                        RepositoryState::Local {
3717                            backend,
3718                            environment,
3719                            ..
3720                        } => backend.stash_pop(environment).await,
3721                        RepositoryState::Remote { project_id, client } => {
3722                            client
3723                                .request(proto::StashPop {
3724                                    project_id: project_id.0,
3725                                    repository_id: id.to_proto(),
3726                                })
3727                                .await
3728                                .context("sending stash pop request")?;
3729                            Ok(())
3730                        }
3731                    }
3732                })
3733            })?
3734            .await??;
3735            Ok(())
3736        })
3737    }
3738
3739    pub fn commit(
3740        &mut self,
3741        message: SharedString,
3742        name_and_email: Option<(SharedString, SharedString)>,
3743        options: CommitOptions,
3744        _cx: &mut App,
3745    ) -> oneshot::Receiver<Result<()>> {
3746        let id = self.id;
3747
3748        self.send_job(Some("git commit".into()), move |git_repo, _cx| async move {
3749            match git_repo {
3750                RepositoryState::Local {
3751                    backend,
3752                    environment,
3753                    ..
3754                } => {
3755                    backend
3756                        .commit(message, name_and_email, options, environment)
3757                        .await
3758                }
3759                RepositoryState::Remote { project_id, client } => {
3760                    let (name, email) = name_and_email.unzip();
3761                    client
3762                        .request(proto::Commit {
3763                            project_id: project_id.0,
3764                            repository_id: id.to_proto(),
3765                            message: String::from(message),
3766                            name: name.map(String::from),
3767                            email: email.map(String::from),
3768                            options: Some(proto::commit::CommitOptions {
3769                                amend: options.amend,
3770                                signoff: options.signoff,
3771                            }),
3772                        })
3773                        .await
3774                        .context("sending commit request")?;
3775
3776                    Ok(())
3777                }
3778            }
3779        })
3780    }
3781
3782    pub fn fetch(
3783        &mut self,
3784        fetch_options: FetchOptions,
3785        askpass: AskPassDelegate,
3786        _cx: &mut App,
3787    ) -> oneshot::Receiver<Result<RemoteCommandOutput>> {
3788        let askpass_delegates = self.askpass_delegates.clone();
3789        let askpass_id = util::post_inc(&mut self.latest_askpass_id);
3790        let id = self.id;
3791
3792        self.send_job(Some("git fetch".into()), move |git_repo, cx| async move {
3793            match git_repo {
3794                RepositoryState::Local {
3795                    backend,
3796                    environment,
3797                    ..
3798                } => backend.fetch(fetch_options, askpass, environment, cx).await,
3799                RepositoryState::Remote { project_id, client } => {
3800                    askpass_delegates.lock().insert(askpass_id, askpass);
3801                    let _defer = util::defer(|| {
3802                        let askpass_delegate = askpass_delegates.lock().remove(&askpass_id);
3803                        debug_assert!(askpass_delegate.is_some());
3804                    });
3805
3806                    let response = client
3807                        .request(proto::Fetch {
3808                            project_id: project_id.0,
3809                            repository_id: id.to_proto(),
3810                            askpass_id,
3811                            remote: fetch_options.to_proto(),
3812                        })
3813                        .await
3814                        .context("sending fetch request")?;
3815
3816                    Ok(RemoteCommandOutput {
3817                        stdout: response.stdout,
3818                        stderr: response.stderr,
3819                    })
3820                }
3821            }
3822        })
3823    }
3824
3825    pub fn push(
3826        &mut self,
3827        branch: SharedString,
3828        remote: SharedString,
3829        options: Option<PushOptions>,
3830        askpass: AskPassDelegate,
3831        cx: &mut Context<Self>,
3832    ) -> oneshot::Receiver<Result<RemoteCommandOutput>> {
3833        let askpass_delegates = self.askpass_delegates.clone();
3834        let askpass_id = util::post_inc(&mut self.latest_askpass_id);
3835        let id = self.id;
3836
3837        let args = options
3838            .map(|option| match option {
3839                PushOptions::SetUpstream => " --set-upstream",
3840                PushOptions::Force => " --force-with-lease",
3841            })
3842            .unwrap_or("");
3843
3844        let updates_tx = self
3845            .git_store()
3846            .and_then(|git_store| match &git_store.read(cx).state {
3847                GitStoreState::Local { downstream, .. } => downstream
3848                    .as_ref()
3849                    .map(|downstream| downstream.updates_tx.clone()),
3850                _ => None,
3851            });
3852
3853        let this = cx.weak_entity();
3854        self.send_job(
3855            Some(format!("git push {} {} {}", args, branch, remote).into()),
3856            move |git_repo, mut cx| async move {
3857                match git_repo {
3858                    RepositoryState::Local {
3859                        backend,
3860                        environment,
3861                        ..
3862                    } => {
3863                        let result = backend
3864                            .push(
3865                                branch.to_string(),
3866                                remote.to_string(),
3867                                options,
3868                                askpass,
3869                                environment.clone(),
3870                                cx.clone(),
3871                            )
3872                            .await;
3873                        if result.is_ok() {
3874                            let branches = backend.branches().await?;
3875                            let branch = branches.into_iter().find(|branch| branch.is_head);
3876                            log::info!("head branch after scan is {branch:?}");
3877                            let snapshot = this.update(&mut cx, |this, cx| {
3878                                this.snapshot.branch = branch;
3879                                let snapshot = this.snapshot.clone();
3880                                cx.emit(RepositoryEvent::Updated {
3881                                    full_scan: false,
3882                                    new_instance: false,
3883                                });
3884                                snapshot
3885                            })?;
3886                            if let Some(updates_tx) = updates_tx {
3887                                updates_tx
3888                                    .unbounded_send(DownstreamUpdate::UpdateRepository(snapshot))
3889                                    .ok();
3890                            }
3891                        }
3892                        result
3893                    }
3894                    RepositoryState::Remote { project_id, client } => {
3895                        askpass_delegates.lock().insert(askpass_id, askpass);
3896                        let _defer = util::defer(|| {
3897                            let askpass_delegate = askpass_delegates.lock().remove(&askpass_id);
3898                            debug_assert!(askpass_delegate.is_some());
3899                        });
3900                        let response = client
3901                            .request(proto::Push {
3902                                project_id: project_id.0,
3903                                repository_id: id.to_proto(),
3904                                askpass_id,
3905                                branch_name: branch.to_string(),
3906                                remote_name: remote.to_string(),
3907                                options: options.map(|options| match options {
3908                                    PushOptions::Force => proto::push::PushOptions::Force,
3909                                    PushOptions::SetUpstream => {
3910                                        proto::push::PushOptions::SetUpstream
3911                                    }
3912                                }
3913                                    as i32),
3914                            })
3915                            .await
3916                            .context("sending push request")?;
3917
3918                        Ok(RemoteCommandOutput {
3919                            stdout: response.stdout,
3920                            stderr: response.stderr,
3921                        })
3922                    }
3923                }
3924            },
3925        )
3926    }
3927
3928    pub fn pull(
3929        &mut self,
3930        branch: SharedString,
3931        remote: SharedString,
3932        askpass: AskPassDelegate,
3933        _cx: &mut App,
3934    ) -> oneshot::Receiver<Result<RemoteCommandOutput>> {
3935        let askpass_delegates = self.askpass_delegates.clone();
3936        let askpass_id = util::post_inc(&mut self.latest_askpass_id);
3937        let id = self.id;
3938
3939        self.send_job(
3940            Some(format!("git pull {} {}", remote, branch).into()),
3941            move |git_repo, cx| async move {
3942                match git_repo {
3943                    RepositoryState::Local {
3944                        backend,
3945                        environment,
3946                        ..
3947                    } => {
3948                        backend
3949                            .pull(
3950                                branch.to_string(),
3951                                remote.to_string(),
3952                                askpass,
3953                                environment.clone(),
3954                                cx,
3955                            )
3956                            .await
3957                    }
3958                    RepositoryState::Remote { project_id, client } => {
3959                        askpass_delegates.lock().insert(askpass_id, askpass);
3960                        let _defer = util::defer(|| {
3961                            let askpass_delegate = askpass_delegates.lock().remove(&askpass_id);
3962                            debug_assert!(askpass_delegate.is_some());
3963                        });
3964                        let response = client
3965                            .request(proto::Pull {
3966                                project_id: project_id.0,
3967                                repository_id: id.to_proto(),
3968                                askpass_id,
3969                                branch_name: branch.to_string(),
3970                                remote_name: remote.to_string(),
3971                            })
3972                            .await
3973                            .context("sending pull request")?;
3974
3975                        Ok(RemoteCommandOutput {
3976                            stdout: response.stdout,
3977                            stderr: response.stderr,
3978                        })
3979                    }
3980                }
3981            },
3982        )
3983    }
3984
3985    fn spawn_set_index_text_job(
3986        &mut self,
3987        path: RepoPath,
3988        content: Option<String>,
3989        hunk_staging_operation_count: Option<usize>,
3990        cx: &mut Context<Self>,
3991    ) -> oneshot::Receiver<anyhow::Result<()>> {
3992        let id = self.id;
3993        let this = cx.weak_entity();
3994        let git_store = self.git_store.clone();
3995        self.send_keyed_job(
3996            Some(GitJobKey::WriteIndex(path.clone())),
3997            None,
3998            move |git_repo, mut cx| async move {
3999                log::debug!("start updating index text for buffer {}", path.display());
4000                match git_repo {
4001                    RepositoryState::Local {
4002                        backend,
4003                        environment,
4004                        ..
4005                    } => {
4006                        backend
4007                            .set_index_text(path.clone(), content, environment.clone())
4008                            .await?;
4009                    }
4010                    RepositoryState::Remote { project_id, client } => {
4011                        client
4012                            .request(proto::SetIndexText {
4013                                project_id: project_id.0,
4014                                repository_id: id.to_proto(),
4015                                path: path.as_ref().to_proto(),
4016                                text: content,
4017                            })
4018                            .await?;
4019                    }
4020                }
4021                log::debug!("finish updating index text for buffer {}", path.display());
4022
4023                if let Some(hunk_staging_operation_count) = hunk_staging_operation_count {
4024                    let project_path = this
4025                        .read_with(&cx, |this, cx| this.repo_path_to_project_path(&path, cx))
4026                        .ok()
4027                        .flatten();
4028                    git_store.update(&mut cx, |git_store, cx| {
4029                        let buffer_id = git_store
4030                            .buffer_store
4031                            .read(cx)
4032                            .get_by_path(&project_path?)?
4033                            .read(cx)
4034                            .remote_id();
4035                        let diff_state = git_store.diffs.get(&buffer_id)?;
4036                        diff_state.update(cx, |diff_state, _| {
4037                            diff_state.hunk_staging_operation_count_as_of_write =
4038                                hunk_staging_operation_count;
4039                        });
4040                        Some(())
4041                    })?;
4042                }
4043                Ok(())
4044            },
4045        )
4046    }
4047
4048    pub fn get_remotes(
4049        &mut self,
4050        branch_name: Option<String>,
4051    ) -> oneshot::Receiver<Result<Vec<Remote>>> {
4052        let id = self.id;
4053        self.send_job(None, move |repo, _cx| async move {
4054            match repo {
4055                RepositoryState::Local { backend, .. } => backend.get_remotes(branch_name).await,
4056                RepositoryState::Remote { project_id, client } => {
4057                    let response = client
4058                        .request(proto::GetRemotes {
4059                            project_id: project_id.0,
4060                            repository_id: id.to_proto(),
4061                            branch_name,
4062                        })
4063                        .await?;
4064
4065                    let remotes = response
4066                        .remotes
4067                        .into_iter()
4068                        .map(|remotes| git::repository::Remote {
4069                            name: remotes.name.into(),
4070                        })
4071                        .collect();
4072
4073                    Ok(remotes)
4074                }
4075            }
4076        })
4077    }
4078
4079    pub fn branches(&mut self) -> oneshot::Receiver<Result<Vec<Branch>>> {
4080        let id = self.id;
4081        self.send_job(None, move |repo, _| async move {
4082            match repo {
4083                RepositoryState::Local { backend, .. } => backend.branches().await,
4084                RepositoryState::Remote { project_id, client } => {
4085                    let response = client
4086                        .request(proto::GitGetBranches {
4087                            project_id: project_id.0,
4088                            repository_id: id.to_proto(),
4089                        })
4090                        .await?;
4091
4092                    let branches = response
4093                        .branches
4094                        .into_iter()
4095                        .map(|branch| proto_to_branch(&branch))
4096                        .collect();
4097
4098                    Ok(branches)
4099                }
4100            }
4101        })
4102    }
4103
4104    pub fn default_branch(&mut self) -> oneshot::Receiver<Result<Option<SharedString>>> {
4105        let id = self.id;
4106        self.send_job(None, move |repo, _| async move {
4107            match repo {
4108                RepositoryState::Local { backend, .. } => backend.default_branch().await,
4109                RepositoryState::Remote { project_id, client } => {
4110                    let response = client
4111                        .request(proto::GetDefaultBranch {
4112                            project_id: project_id.0,
4113                            repository_id: id.to_proto(),
4114                        })
4115                        .await?;
4116
4117                    anyhow::Ok(response.branch.map(SharedString::from))
4118                }
4119            }
4120        })
4121    }
4122
4123    pub fn diff(&mut self, diff_type: DiffType, _cx: &App) -> oneshot::Receiver<Result<String>> {
4124        let id = self.id;
4125        self.send_job(None, move |repo, _cx| async move {
4126            match repo {
4127                RepositoryState::Local { backend, .. } => backend.diff(diff_type).await,
4128                RepositoryState::Remote { project_id, client } => {
4129                    let response = client
4130                        .request(proto::GitDiff {
4131                            project_id: project_id.0,
4132                            repository_id: id.to_proto(),
4133                            diff_type: match diff_type {
4134                                DiffType::HeadToIndex => {
4135                                    proto::git_diff::DiffType::HeadToIndex.into()
4136                                }
4137                                DiffType::HeadToWorktree => {
4138                                    proto::git_diff::DiffType::HeadToWorktree.into()
4139                                }
4140                            },
4141                        })
4142                        .await?;
4143
4144                    Ok(response.diff)
4145                }
4146            }
4147        })
4148    }
4149
4150    pub fn create_branch(&mut self, branch_name: String) -> oneshot::Receiver<Result<()>> {
4151        let id = self.id;
4152        self.send_job(
4153            Some(format!("git switch -c {branch_name}").into()),
4154            move |repo, _cx| async move {
4155                match repo {
4156                    RepositoryState::Local { backend, .. } => {
4157                        backend.create_branch(branch_name).await
4158                    }
4159                    RepositoryState::Remote { project_id, client } => {
4160                        client
4161                            .request(proto::GitCreateBranch {
4162                                project_id: project_id.0,
4163                                repository_id: id.to_proto(),
4164                                branch_name,
4165                            })
4166                            .await?;
4167
4168                        Ok(())
4169                    }
4170                }
4171            },
4172        )
4173    }
4174
4175    pub fn change_branch(&mut self, branch_name: String) -> oneshot::Receiver<Result<()>> {
4176        let id = self.id;
4177        self.send_job(
4178            Some(format!("git switch {branch_name}").into()),
4179            move |repo, _cx| async move {
4180                match repo {
4181                    RepositoryState::Local { backend, .. } => {
4182                        backend.change_branch(branch_name).await
4183                    }
4184                    RepositoryState::Remote { project_id, client } => {
4185                        client
4186                            .request(proto::GitChangeBranch {
4187                                project_id: project_id.0,
4188                                repository_id: id.to_proto(),
4189                                branch_name,
4190                            })
4191                            .await?;
4192
4193                        Ok(())
4194                    }
4195                }
4196            },
4197        )
4198    }
4199
4200    pub fn check_for_pushed_commits(&mut self) -> oneshot::Receiver<Result<Vec<SharedString>>> {
4201        let id = self.id;
4202        self.send_job(None, move |repo, _cx| async move {
4203            match repo {
4204                RepositoryState::Local { backend, .. } => backend.check_for_pushed_commit().await,
4205                RepositoryState::Remote { project_id, client } => {
4206                    let response = client
4207                        .request(proto::CheckForPushedCommits {
4208                            project_id: project_id.0,
4209                            repository_id: id.to_proto(),
4210                        })
4211                        .await?;
4212
4213                    let branches = response.pushed_to.into_iter().map(Into::into).collect();
4214
4215                    Ok(branches)
4216                }
4217            }
4218        })
4219    }
4220
4221    pub fn checkpoint(&mut self) -> oneshot::Receiver<Result<GitRepositoryCheckpoint>> {
4222        self.send_job(None, |repo, _cx| async move {
4223            match repo {
4224                RepositoryState::Local { backend, .. } => backend.checkpoint().await,
4225                RepositoryState::Remote { .. } => anyhow::bail!("not implemented yet"),
4226            }
4227        })
4228    }
4229
4230    pub fn restore_checkpoint(
4231        &mut self,
4232        checkpoint: GitRepositoryCheckpoint,
4233    ) -> oneshot::Receiver<Result<()>> {
4234        self.send_job(None, move |repo, _cx| async move {
4235            match repo {
4236                RepositoryState::Local { backend, .. } => {
4237                    backend.restore_checkpoint(checkpoint).await
4238                }
4239                RepositoryState::Remote { .. } => anyhow::bail!("not implemented yet"),
4240            }
4241        })
4242    }
4243
4244    pub(crate) fn apply_remote_update(
4245        &mut self,
4246        update: proto::UpdateRepository,
4247        is_new: bool,
4248        cx: &mut Context<Self>,
4249    ) -> Result<()> {
4250        let conflicted_paths = TreeSet::from_ordered_entries(
4251            update
4252                .current_merge_conflicts
4253                .into_iter()
4254                .map(|path| RepoPath(Path::new(&path).into())),
4255        );
4256        self.snapshot.branch = update.branch_summary.as_ref().map(proto_to_branch);
4257        self.snapshot.head_commit = update
4258            .head_commit_details
4259            .as_ref()
4260            .map(proto_to_commit_details);
4261
4262        self.snapshot.merge.conflicted_paths = conflicted_paths;
4263        self.snapshot.merge.message = update.merge_message.map(SharedString::from);
4264
4265        let edits = update
4266            .removed_statuses
4267            .into_iter()
4268            .map(|path| sum_tree::Edit::Remove(PathKey(FromProto::from_proto(path))))
4269            .chain(
4270                update
4271                    .updated_statuses
4272                    .into_iter()
4273                    .filter_map(|updated_status| {
4274                        Some(sum_tree::Edit::Insert(updated_status.try_into().log_err()?))
4275                    }),
4276            )
4277            .collect::<Vec<_>>();
4278        self.snapshot.statuses_by_path.edit(edits, &());
4279        if update.is_last_update {
4280            self.snapshot.scan_id = update.scan_id;
4281        }
4282        cx.emit(RepositoryEvent::Updated {
4283            full_scan: true,
4284            new_instance: is_new,
4285        });
4286        Ok(())
4287    }
4288
4289    pub fn compare_checkpoints(
4290        &mut self,
4291        left: GitRepositoryCheckpoint,
4292        right: GitRepositoryCheckpoint,
4293    ) -> oneshot::Receiver<Result<bool>> {
4294        self.send_job(None, move |repo, _cx| async move {
4295            match repo {
4296                RepositoryState::Local { backend, .. } => {
4297                    backend.compare_checkpoints(left, right).await
4298                }
4299                RepositoryState::Remote { .. } => anyhow::bail!("not implemented yet"),
4300            }
4301        })
4302    }
4303
4304    pub fn diff_checkpoints(
4305        &mut self,
4306        base_checkpoint: GitRepositoryCheckpoint,
4307        target_checkpoint: GitRepositoryCheckpoint,
4308    ) -> oneshot::Receiver<Result<String>> {
4309        self.send_job(None, move |repo, _cx| async move {
4310            match repo {
4311                RepositoryState::Local { backend, .. } => {
4312                    backend
4313                        .diff_checkpoints(base_checkpoint, target_checkpoint)
4314                        .await
4315                }
4316                RepositoryState::Remote { .. } => anyhow::bail!("not implemented yet"),
4317            }
4318        })
4319    }
4320
4321    fn schedule_scan(
4322        &mut self,
4323        updates_tx: Option<mpsc::UnboundedSender<DownstreamUpdate>>,
4324        cx: &mut Context<Self>,
4325    ) {
4326        let this = cx.weak_entity();
4327        let _ = self.send_keyed_job(
4328            Some(GitJobKey::ReloadGitState),
4329            None,
4330            |state, mut cx| async move {
4331                log::debug!("run scheduled git status scan");
4332
4333                let Some(this) = this.upgrade() else {
4334                    return Ok(());
4335                };
4336                let RepositoryState::Local { backend, .. } = state else {
4337                    bail!("not a local repository")
4338                };
4339                let (snapshot, events) = this
4340                    .update(&mut cx, |this, _| {
4341                        this.paths_needing_status_update.clear();
4342                        compute_snapshot(
4343                            this.id,
4344                            this.work_directory_abs_path.clone(),
4345                            this.snapshot.clone(),
4346                            backend.clone(),
4347                        )
4348                    })?
4349                    .await?;
4350                this.update(&mut cx, |this, cx| {
4351                    this.snapshot = snapshot.clone();
4352                    for event in events {
4353                        cx.emit(event);
4354                    }
4355                })?;
4356                if let Some(updates_tx) = updates_tx {
4357                    updates_tx
4358                        .unbounded_send(DownstreamUpdate::UpdateRepository(snapshot))
4359                        .ok();
4360                }
4361                Ok(())
4362            },
4363        );
4364    }
4365
4366    fn spawn_local_git_worker(
4367        work_directory_abs_path: Arc<Path>,
4368        dot_git_abs_path: Arc<Path>,
4369        _repository_dir_abs_path: Arc<Path>,
4370        _common_dir_abs_path: Arc<Path>,
4371        project_environment: WeakEntity<ProjectEnvironment>,
4372        fs: Arc<dyn Fs>,
4373        cx: &mut Context<Self>,
4374    ) -> mpsc::UnboundedSender<GitJob> {
4375        let (job_tx, mut job_rx) = mpsc::unbounded::<GitJob>();
4376
4377        cx.spawn(async move |_, cx| {
4378            let environment = project_environment
4379                .upgrade()
4380                .context("missing project environment")?
4381                .update(cx, |project_environment, cx| {
4382                    project_environment.get_directory_environment(work_directory_abs_path.clone(), cx)
4383                })?
4384                .await
4385                .unwrap_or_else(|| {
4386                    log::error!("failed to get working directory environment for repository {work_directory_abs_path:?}");
4387                    HashMap::default()
4388                });
4389            let backend = cx
4390                .background_spawn(async move {
4391                    fs.open_repo(&dot_git_abs_path)
4392                        .with_context(|| format!("opening repository at {dot_git_abs_path:?}"))
4393                })
4394                .await?;
4395
4396            if let Some(git_hosting_provider_registry) =
4397                cx.update(|cx| GitHostingProviderRegistry::try_global(cx))?
4398            {
4399                git_hosting_providers::register_additional_providers(
4400                    git_hosting_provider_registry,
4401                    backend.clone(),
4402                );
4403            }
4404
4405            let state = RepositoryState::Local {
4406                backend,
4407                environment: Arc::new(environment),
4408            };
4409            let mut jobs = VecDeque::new();
4410            loop {
4411                while let Ok(Some(next_job)) = job_rx.try_next() {
4412                    jobs.push_back(next_job);
4413                }
4414
4415                if let Some(job) = jobs.pop_front() {
4416                    if let Some(current_key) = &job.key
4417                        && jobs
4418                            .iter()
4419                            .any(|other_job| other_job.key.as_ref() == Some(current_key))
4420                        {
4421                            continue;
4422                        }
4423                    (job.job)(state.clone(), cx).await;
4424                } else if let Some(job) = job_rx.next().await {
4425                    jobs.push_back(job);
4426                } else {
4427                    break;
4428                }
4429            }
4430            anyhow::Ok(())
4431        })
4432        .detach_and_log_err(cx);
4433
4434        job_tx
4435    }
4436
4437    fn spawn_remote_git_worker(
4438        project_id: ProjectId,
4439        client: AnyProtoClient,
4440        cx: &mut Context<Self>,
4441    ) -> mpsc::UnboundedSender<GitJob> {
4442        let (job_tx, mut job_rx) = mpsc::unbounded::<GitJob>();
4443
4444        cx.spawn(async move |_, cx| {
4445            let state = RepositoryState::Remote { project_id, client };
4446            let mut jobs = VecDeque::new();
4447            loop {
4448                while let Ok(Some(next_job)) = job_rx.try_next() {
4449                    jobs.push_back(next_job);
4450                }
4451
4452                if let Some(job) = jobs.pop_front() {
4453                    if let Some(current_key) = &job.key
4454                        && jobs
4455                            .iter()
4456                            .any(|other_job| other_job.key.as_ref() == Some(current_key))
4457                    {
4458                        continue;
4459                    }
4460                    (job.job)(state.clone(), cx).await;
4461                } else if let Some(job) = job_rx.next().await {
4462                    jobs.push_back(job);
4463                } else {
4464                    break;
4465                }
4466            }
4467            anyhow::Ok(())
4468        })
4469        .detach_and_log_err(cx);
4470
4471        job_tx
4472    }
4473
4474    fn load_staged_text(
4475        &mut self,
4476        buffer_id: BufferId,
4477        repo_path: RepoPath,
4478        cx: &App,
4479    ) -> Task<Result<Option<String>>> {
4480        let rx = self.send_job(None, move |state, _| async move {
4481            match state {
4482                RepositoryState::Local { backend, .. } => {
4483                    anyhow::Ok(backend.load_index_text(repo_path).await)
4484                }
4485                RepositoryState::Remote { project_id, client } => {
4486                    let response = client
4487                        .request(proto::OpenUnstagedDiff {
4488                            project_id: project_id.to_proto(),
4489                            buffer_id: buffer_id.to_proto(),
4490                        })
4491                        .await?;
4492                    Ok(response.staged_text)
4493                }
4494            }
4495        });
4496        cx.spawn(|_: &mut AsyncApp| async move { rx.await? })
4497    }
4498
4499    fn load_committed_text(
4500        &mut self,
4501        buffer_id: BufferId,
4502        repo_path: RepoPath,
4503        cx: &App,
4504    ) -> Task<Result<DiffBasesChange>> {
4505        let rx = self.send_job(None, move |state, _| async move {
4506            match state {
4507                RepositoryState::Local { backend, .. } => {
4508                    let committed_text = backend.load_committed_text(repo_path.clone()).await;
4509                    let staged_text = backend.load_index_text(repo_path).await;
4510                    let diff_bases_change = if committed_text == staged_text {
4511                        DiffBasesChange::SetBoth(committed_text)
4512                    } else {
4513                        DiffBasesChange::SetEach {
4514                            index: staged_text,
4515                            head: committed_text,
4516                        }
4517                    };
4518                    anyhow::Ok(diff_bases_change)
4519                }
4520                RepositoryState::Remote { project_id, client } => {
4521                    use proto::open_uncommitted_diff_response::Mode;
4522
4523                    let response = client
4524                        .request(proto::OpenUncommittedDiff {
4525                            project_id: project_id.to_proto(),
4526                            buffer_id: buffer_id.to_proto(),
4527                        })
4528                        .await?;
4529                    let mode = Mode::from_i32(response.mode).context("Invalid mode")?;
4530                    let bases = match mode {
4531                        Mode::IndexMatchesHead => DiffBasesChange::SetBoth(response.committed_text),
4532                        Mode::IndexAndHead => DiffBasesChange::SetEach {
4533                            head: response.committed_text,
4534                            index: response.staged_text,
4535                        },
4536                    };
4537                    Ok(bases)
4538                }
4539            }
4540        });
4541
4542        cx.spawn(|_: &mut AsyncApp| async move { rx.await? })
4543    }
4544
4545    fn paths_changed(
4546        &mut self,
4547        paths: Vec<RepoPath>,
4548        updates_tx: Option<mpsc::UnboundedSender<DownstreamUpdate>>,
4549        cx: &mut Context<Self>,
4550    ) {
4551        self.paths_needing_status_update.extend(paths);
4552
4553        let this = cx.weak_entity();
4554        let _ = self.send_keyed_job(
4555            Some(GitJobKey::RefreshStatuses),
4556            None,
4557            |state, mut cx| async move {
4558                let (prev_snapshot, mut changed_paths) = this.update(&mut cx, |this, _| {
4559                    (
4560                        this.snapshot.clone(),
4561                        mem::take(&mut this.paths_needing_status_update),
4562                    )
4563                })?;
4564                let RepositoryState::Local { backend, .. } = state else {
4565                    bail!("not a local repository")
4566                };
4567
4568                let paths = changed_paths.iter().cloned().collect::<Vec<_>>();
4569                if paths.is_empty() {
4570                    return Ok(());
4571                }
4572                let statuses = backend.status(&paths).await?;
4573
4574                let changed_path_statuses = cx
4575                    .background_spawn(async move {
4576                        let mut changed_path_statuses = Vec::new();
4577                        let prev_statuses = prev_snapshot.statuses_by_path.clone();
4578                        let mut cursor = prev_statuses.cursor::<PathProgress>(&());
4579
4580                        for (repo_path, status) in &*statuses.entries {
4581                            changed_paths.remove(repo_path);
4582                            if cursor.seek_forward(&PathTarget::Path(repo_path), Bias::Left)
4583                                && cursor.item().is_some_and(|entry| entry.status == *status)
4584                            {
4585                                continue;
4586                            }
4587
4588                            changed_path_statuses.push(Edit::Insert(StatusEntry {
4589                                repo_path: repo_path.clone(),
4590                                status: *status,
4591                            }));
4592                        }
4593                        let mut cursor = prev_statuses.cursor::<PathProgress>(&());
4594                        for path in changed_paths.into_iter() {
4595                            if cursor.seek_forward(&PathTarget::Path(&path), Bias::Left) {
4596                                changed_path_statuses.push(Edit::Remove(PathKey(path.0)));
4597                            }
4598                        }
4599                        changed_path_statuses
4600                    })
4601                    .await;
4602
4603                this.update(&mut cx, |this, cx| {
4604                    if !changed_path_statuses.is_empty() {
4605                        this.snapshot
4606                            .statuses_by_path
4607                            .edit(changed_path_statuses, &());
4608                        this.snapshot.scan_id += 1;
4609                        if let Some(updates_tx) = updates_tx {
4610                            updates_tx
4611                                .unbounded_send(DownstreamUpdate::UpdateRepository(
4612                                    this.snapshot.clone(),
4613                                ))
4614                                .ok();
4615                        }
4616                    }
4617                    cx.emit(RepositoryEvent::Updated {
4618                        full_scan: false,
4619                        new_instance: false,
4620                    });
4621                })
4622            },
4623        );
4624    }
4625
4626    /// currently running git command and when it started
4627    pub fn current_job(&self) -> Option<JobInfo> {
4628        self.active_jobs.values().next().cloned()
4629    }
4630
4631    pub fn barrier(&mut self) -> oneshot::Receiver<()> {
4632        self.send_job(None, |_, _| async {})
4633    }
4634}
4635
4636fn get_permalink_in_rust_registry_src(
4637    provider_registry: Arc<GitHostingProviderRegistry>,
4638    path: PathBuf,
4639    selection: Range<u32>,
4640) -> Result<url::Url> {
4641    #[derive(Deserialize)]
4642    struct CargoVcsGit {
4643        sha1: String,
4644    }
4645
4646    #[derive(Deserialize)]
4647    struct CargoVcsInfo {
4648        git: CargoVcsGit,
4649        path_in_vcs: String,
4650    }
4651
4652    #[derive(Deserialize)]
4653    struct CargoPackage {
4654        repository: String,
4655    }
4656
4657    #[derive(Deserialize)]
4658    struct CargoToml {
4659        package: CargoPackage,
4660    }
4661
4662    let Some((dir, cargo_vcs_info_json)) = path.ancestors().skip(1).find_map(|dir| {
4663        let json = std::fs::read_to_string(dir.join(".cargo_vcs_info.json")).ok()?;
4664        Some((dir, json))
4665    }) else {
4666        bail!("No .cargo_vcs_info.json found in parent directories")
4667    };
4668    let cargo_vcs_info = serde_json::from_str::<CargoVcsInfo>(&cargo_vcs_info_json)?;
4669    let cargo_toml = std::fs::read_to_string(dir.join("Cargo.toml"))?;
4670    let manifest = toml::from_str::<CargoToml>(&cargo_toml)?;
4671    let (provider, remote) = parse_git_remote_url(provider_registry, &manifest.package.repository)
4672        .context("parsing package.repository field of manifest")?;
4673    let path = PathBuf::from(cargo_vcs_info.path_in_vcs).join(path.strip_prefix(dir).unwrap());
4674    let permalink = provider.build_permalink(
4675        remote,
4676        BuildPermalinkParams {
4677            sha: &cargo_vcs_info.git.sha1,
4678            path: &path.to_string_lossy(),
4679            selection: Some(selection),
4680        },
4681    );
4682    Ok(permalink)
4683}
4684
4685fn serialize_blame_buffer_response(blame: Option<git::blame::Blame>) -> proto::BlameBufferResponse {
4686    let Some(blame) = blame else {
4687        return proto::BlameBufferResponse {
4688            blame_response: None,
4689        };
4690    };
4691
4692    let entries = blame
4693        .entries
4694        .into_iter()
4695        .map(|entry| proto::BlameEntry {
4696            sha: entry.sha.as_bytes().into(),
4697            start_line: entry.range.start,
4698            end_line: entry.range.end,
4699            original_line_number: entry.original_line_number,
4700            author: entry.author,
4701            author_mail: entry.author_mail,
4702            author_time: entry.author_time,
4703            author_tz: entry.author_tz,
4704            committer: entry.committer_name,
4705            committer_mail: entry.committer_email,
4706            committer_time: entry.committer_time,
4707            committer_tz: entry.committer_tz,
4708            summary: entry.summary,
4709            previous: entry.previous,
4710            filename: entry.filename,
4711        })
4712        .collect::<Vec<_>>();
4713
4714    let messages = blame
4715        .messages
4716        .into_iter()
4717        .map(|(oid, message)| proto::CommitMessage {
4718            oid: oid.as_bytes().into(),
4719            message,
4720        })
4721        .collect::<Vec<_>>();
4722
4723    proto::BlameBufferResponse {
4724        blame_response: Some(proto::blame_buffer_response::BlameResponse {
4725            entries,
4726            messages,
4727            remote_url: blame.remote_url,
4728        }),
4729    }
4730}
4731
4732fn deserialize_blame_buffer_response(
4733    response: proto::BlameBufferResponse,
4734) -> Option<git::blame::Blame> {
4735    let response = response.blame_response?;
4736    let entries = response
4737        .entries
4738        .into_iter()
4739        .filter_map(|entry| {
4740            Some(git::blame::BlameEntry {
4741                sha: git::Oid::from_bytes(&entry.sha).ok()?,
4742                range: entry.start_line..entry.end_line,
4743                original_line_number: entry.original_line_number,
4744                committer_name: entry.committer,
4745                committer_time: entry.committer_time,
4746                committer_tz: entry.committer_tz,
4747                committer_email: entry.committer_mail,
4748                author: entry.author,
4749                author_mail: entry.author_mail,
4750                author_time: entry.author_time,
4751                author_tz: entry.author_tz,
4752                summary: entry.summary,
4753                previous: entry.previous,
4754                filename: entry.filename,
4755            })
4756        })
4757        .collect::<Vec<_>>();
4758
4759    let messages = response
4760        .messages
4761        .into_iter()
4762        .filter_map(|message| Some((git::Oid::from_bytes(&message.oid).ok()?, message.message)))
4763        .collect::<HashMap<_, _>>();
4764
4765    Some(Blame {
4766        entries,
4767        messages,
4768        remote_url: response.remote_url,
4769    })
4770}
4771
4772fn branch_to_proto(branch: &git::repository::Branch) -> proto::Branch {
4773    proto::Branch {
4774        is_head: branch.is_head,
4775        ref_name: branch.ref_name.to_string(),
4776        unix_timestamp: branch
4777            .most_recent_commit
4778            .as_ref()
4779            .map(|commit| commit.commit_timestamp as u64),
4780        upstream: branch.upstream.as_ref().map(|upstream| proto::GitUpstream {
4781            ref_name: upstream.ref_name.to_string(),
4782            tracking: upstream
4783                .tracking
4784                .status()
4785                .map(|upstream| proto::UpstreamTracking {
4786                    ahead: upstream.ahead as u64,
4787                    behind: upstream.behind as u64,
4788                }),
4789        }),
4790        most_recent_commit: branch
4791            .most_recent_commit
4792            .as_ref()
4793            .map(|commit| proto::CommitSummary {
4794                sha: commit.sha.to_string(),
4795                subject: commit.subject.to_string(),
4796                commit_timestamp: commit.commit_timestamp,
4797            }),
4798    }
4799}
4800
4801fn proto_to_branch(proto: &proto::Branch) -> git::repository::Branch {
4802    git::repository::Branch {
4803        is_head: proto.is_head,
4804        ref_name: proto.ref_name.clone().into(),
4805        upstream: proto
4806            .upstream
4807            .as_ref()
4808            .map(|upstream| git::repository::Upstream {
4809                ref_name: upstream.ref_name.to_string().into(),
4810                tracking: upstream
4811                    .tracking
4812                    .as_ref()
4813                    .map(|tracking| {
4814                        git::repository::UpstreamTracking::Tracked(UpstreamTrackingStatus {
4815                            ahead: tracking.ahead as u32,
4816                            behind: tracking.behind as u32,
4817                        })
4818                    })
4819                    .unwrap_or(git::repository::UpstreamTracking::Gone),
4820            }),
4821        most_recent_commit: proto.most_recent_commit.as_ref().map(|commit| {
4822            git::repository::CommitSummary {
4823                sha: commit.sha.to_string().into(),
4824                subject: commit.subject.to_string().into(),
4825                commit_timestamp: commit.commit_timestamp,
4826                has_parent: true,
4827            }
4828        }),
4829    }
4830}
4831
4832fn commit_details_to_proto(commit: &CommitDetails) -> proto::GitCommitDetails {
4833    proto::GitCommitDetails {
4834        sha: commit.sha.to_string(),
4835        message: commit.message.to_string(),
4836        commit_timestamp: commit.commit_timestamp,
4837        author_email: commit.author_email.to_string(),
4838        author_name: commit.author_name.to_string(),
4839    }
4840}
4841
4842fn proto_to_commit_details(proto: &proto::GitCommitDetails) -> CommitDetails {
4843    CommitDetails {
4844        sha: proto.sha.clone().into(),
4845        message: proto.message.clone().into(),
4846        commit_timestamp: proto.commit_timestamp,
4847        author_email: proto.author_email.clone().into(),
4848        author_name: proto.author_name.clone().into(),
4849    }
4850}
4851
4852async fn compute_snapshot(
4853    id: RepositoryId,
4854    work_directory_abs_path: Arc<Path>,
4855    prev_snapshot: RepositorySnapshot,
4856    backend: Arc<dyn GitRepository>,
4857) -> Result<(RepositorySnapshot, Vec<RepositoryEvent>)> {
4858    let mut events = Vec::new();
4859    let branches = backend.branches().await?;
4860    let branch = branches.into_iter().find(|branch| branch.is_head);
4861    let statuses = backend
4862        .status(std::slice::from_ref(&WORK_DIRECTORY_REPO_PATH))
4863        .await?;
4864    let statuses_by_path = SumTree::from_iter(
4865        statuses
4866            .entries
4867            .iter()
4868            .map(|(repo_path, status)| StatusEntry {
4869                repo_path: repo_path.clone(),
4870                status: *status,
4871            }),
4872        &(),
4873    );
4874    let (merge_details, merge_heads_changed) =
4875        MergeDetails::load(&backend, &statuses_by_path, &prev_snapshot).await?;
4876    log::debug!("new merge details (changed={merge_heads_changed:?}): {merge_details:?}");
4877
4878    if merge_heads_changed
4879        || branch != prev_snapshot.branch
4880        || statuses_by_path != prev_snapshot.statuses_by_path
4881    {
4882        events.push(RepositoryEvent::Updated {
4883            full_scan: true,
4884            new_instance: false,
4885        });
4886    }
4887
4888    // Cache merge conflict paths so they don't change from staging/unstaging,
4889    // until the merge heads change (at commit time, etc.).
4890    if merge_heads_changed {
4891        events.push(RepositoryEvent::MergeHeadsChanged);
4892    }
4893
4894    // Useful when branch is None in detached head state
4895    let head_commit = match backend.head_sha().await {
4896        Some(head_sha) => backend.show(head_sha).await.log_err(),
4897        None => None,
4898    };
4899
4900    // Used by edit prediction data collection
4901    let remote_origin_url = backend.remote_url("origin");
4902    let remote_upstream_url = backend.remote_url("upstream");
4903
4904    let snapshot = RepositorySnapshot {
4905        id,
4906        statuses_by_path,
4907        work_directory_abs_path,
4908        scan_id: prev_snapshot.scan_id + 1,
4909        branch,
4910        head_commit,
4911        merge: merge_details,
4912        remote_origin_url,
4913        remote_upstream_url,
4914    };
4915
4916    Ok((snapshot, events))
4917}
4918
4919fn status_from_proto(
4920    simple_status: i32,
4921    status: Option<proto::GitFileStatus>,
4922) -> anyhow::Result<FileStatus> {
4923    use proto::git_file_status::Variant;
4924
4925    let Some(variant) = status.and_then(|status| status.variant) else {
4926        let code = proto::GitStatus::from_i32(simple_status)
4927            .with_context(|| format!("Invalid git status code: {simple_status}"))?;
4928        let result = match code {
4929            proto::GitStatus::Added => TrackedStatus {
4930                worktree_status: StatusCode::Added,
4931                index_status: StatusCode::Unmodified,
4932            }
4933            .into(),
4934            proto::GitStatus::Modified => TrackedStatus {
4935                worktree_status: StatusCode::Modified,
4936                index_status: StatusCode::Unmodified,
4937            }
4938            .into(),
4939            proto::GitStatus::Conflict => UnmergedStatus {
4940                first_head: UnmergedStatusCode::Updated,
4941                second_head: UnmergedStatusCode::Updated,
4942            }
4943            .into(),
4944            proto::GitStatus::Deleted => TrackedStatus {
4945                worktree_status: StatusCode::Deleted,
4946                index_status: StatusCode::Unmodified,
4947            }
4948            .into(),
4949            _ => anyhow::bail!("Invalid code for simple status: {simple_status}"),
4950        };
4951        return Ok(result);
4952    };
4953
4954    let result = match variant {
4955        Variant::Untracked(_) => FileStatus::Untracked,
4956        Variant::Ignored(_) => FileStatus::Ignored,
4957        Variant::Unmerged(unmerged) => {
4958            let [first_head, second_head] =
4959                [unmerged.first_head, unmerged.second_head].map(|head| {
4960                    let code = proto::GitStatus::from_i32(head)
4961                        .with_context(|| format!("Invalid git status code: {head}"))?;
4962                    let result = match code {
4963                        proto::GitStatus::Added => UnmergedStatusCode::Added,
4964                        proto::GitStatus::Updated => UnmergedStatusCode::Updated,
4965                        proto::GitStatus::Deleted => UnmergedStatusCode::Deleted,
4966                        _ => anyhow::bail!("Invalid code for unmerged status: {code:?}"),
4967                    };
4968                    Ok(result)
4969                });
4970            let [first_head, second_head] = [first_head?, second_head?];
4971            UnmergedStatus {
4972                first_head,
4973                second_head,
4974            }
4975            .into()
4976        }
4977        Variant::Tracked(tracked) => {
4978            let [index_status, worktree_status] = [tracked.index_status, tracked.worktree_status]
4979                .map(|status| {
4980                    let code = proto::GitStatus::from_i32(status)
4981                        .with_context(|| format!("Invalid git status code: {status}"))?;
4982                    let result = match code {
4983                        proto::GitStatus::Modified => StatusCode::Modified,
4984                        proto::GitStatus::TypeChanged => StatusCode::TypeChanged,
4985                        proto::GitStatus::Added => StatusCode::Added,
4986                        proto::GitStatus::Deleted => StatusCode::Deleted,
4987                        proto::GitStatus::Renamed => StatusCode::Renamed,
4988                        proto::GitStatus::Copied => StatusCode::Copied,
4989                        proto::GitStatus::Unmodified => StatusCode::Unmodified,
4990                        _ => anyhow::bail!("Invalid code for tracked status: {code:?}"),
4991                    };
4992                    Ok(result)
4993                });
4994            let [index_status, worktree_status] = [index_status?, worktree_status?];
4995            TrackedStatus {
4996                index_status,
4997                worktree_status,
4998            }
4999            .into()
5000        }
5001    };
5002    Ok(result)
5003}
5004
5005fn status_to_proto(status: FileStatus) -> proto::GitFileStatus {
5006    use proto::git_file_status::{Tracked, Unmerged, Variant};
5007
5008    let variant = match status {
5009        FileStatus::Untracked => Variant::Untracked(Default::default()),
5010        FileStatus::Ignored => Variant::Ignored(Default::default()),
5011        FileStatus::Unmerged(UnmergedStatus {
5012            first_head,
5013            second_head,
5014        }) => Variant::Unmerged(Unmerged {
5015            first_head: unmerged_status_to_proto(first_head),
5016            second_head: unmerged_status_to_proto(second_head),
5017        }),
5018        FileStatus::Tracked(TrackedStatus {
5019            index_status,
5020            worktree_status,
5021        }) => Variant::Tracked(Tracked {
5022            index_status: tracked_status_to_proto(index_status),
5023            worktree_status: tracked_status_to_proto(worktree_status),
5024        }),
5025    };
5026    proto::GitFileStatus {
5027        variant: Some(variant),
5028    }
5029}
5030
5031fn unmerged_status_to_proto(code: UnmergedStatusCode) -> i32 {
5032    match code {
5033        UnmergedStatusCode::Added => proto::GitStatus::Added as _,
5034        UnmergedStatusCode::Deleted => proto::GitStatus::Deleted as _,
5035        UnmergedStatusCode::Updated => proto::GitStatus::Updated as _,
5036    }
5037}
5038
5039fn tracked_status_to_proto(code: StatusCode) -> i32 {
5040    match code {
5041        StatusCode::Added => proto::GitStatus::Added as _,
5042        StatusCode::Deleted => proto::GitStatus::Deleted as _,
5043        StatusCode::Modified => proto::GitStatus::Modified as _,
5044        StatusCode::Renamed => proto::GitStatus::Renamed as _,
5045        StatusCode::TypeChanged => proto::GitStatus::TypeChanged as _,
5046        StatusCode::Copied => proto::GitStatus::Copied as _,
5047        StatusCode::Unmodified => proto::GitStatus::Unmodified as _,
5048    }
5049}