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