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, GitRepository,
  27        GitRepositoryCheckpoint, PushOptions, Remote, RemoteCommandOutput, RepoPath, ResetMode,
  28        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 },
 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, 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 askpass_id = envelope.payload.askpass_id;
1557
1558        let askpass = make_remote_delegate(
1559            this,
1560            envelope.payload.project_id,
1561            repository_id,
1562            askpass_id,
1563            &mut cx,
1564        );
1565
1566        let remote_output = repository_handle
1567            .update(&mut cx, |repository_handle, cx| {
1568                repository_handle.fetch(askpass, cx)
1569            })?
1570            .await??;
1571
1572        Ok(proto::RemoteMessageResponse {
1573            stdout: remote_output.stdout,
1574            stderr: remote_output.stderr,
1575        })
1576    }
1577
1578    async fn handle_push(
1579        this: Entity<Self>,
1580        envelope: TypedEnvelope<proto::Push>,
1581        mut cx: AsyncApp,
1582    ) -> Result<proto::RemoteMessageResponse> {
1583        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1584        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1585
1586        let askpass_id = envelope.payload.askpass_id;
1587        let askpass = make_remote_delegate(
1588            this,
1589            envelope.payload.project_id,
1590            repository_id,
1591            askpass_id,
1592            &mut cx,
1593        );
1594
1595        let options = envelope
1596            .payload
1597            .options
1598            .as_ref()
1599            .map(|_| match envelope.payload.options() {
1600                proto::push::PushOptions::SetUpstream => git::repository::PushOptions::SetUpstream,
1601                proto::push::PushOptions::Force => git::repository::PushOptions::Force,
1602            });
1603
1604        let branch_name = envelope.payload.branch_name.into();
1605        let remote_name = envelope.payload.remote_name.into();
1606
1607        let remote_output = repository_handle
1608            .update(&mut cx, |repository_handle, cx| {
1609                repository_handle.push(branch_name, remote_name, options, askpass, cx)
1610            })?
1611            .await??;
1612        Ok(proto::RemoteMessageResponse {
1613            stdout: remote_output.stdout,
1614            stderr: remote_output.stderr,
1615        })
1616    }
1617
1618    async fn handle_pull(
1619        this: Entity<Self>,
1620        envelope: TypedEnvelope<proto::Pull>,
1621        mut cx: AsyncApp,
1622    ) -> Result<proto::RemoteMessageResponse> {
1623        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1624        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1625        let askpass_id = envelope.payload.askpass_id;
1626        let askpass = make_remote_delegate(
1627            this,
1628            envelope.payload.project_id,
1629            repository_id,
1630            askpass_id,
1631            &mut cx,
1632        );
1633
1634        let branch_name = envelope.payload.branch_name.into();
1635        let remote_name = envelope.payload.remote_name.into();
1636
1637        let remote_message = repository_handle
1638            .update(&mut cx, |repository_handle, cx| {
1639                repository_handle.pull(branch_name, remote_name, askpass, cx)
1640            })?
1641            .await??;
1642
1643        Ok(proto::RemoteMessageResponse {
1644            stdout: remote_message.stdout,
1645            stderr: remote_message.stderr,
1646        })
1647    }
1648
1649    async fn handle_stage(
1650        this: Entity<Self>,
1651        envelope: TypedEnvelope<proto::Stage>,
1652        mut cx: AsyncApp,
1653    ) -> Result<proto::Ack> {
1654        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1655        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1656
1657        let entries = envelope
1658            .payload
1659            .paths
1660            .into_iter()
1661            .map(PathBuf::from)
1662            .map(RepoPath::new)
1663            .collect();
1664
1665        repository_handle
1666            .update(&mut cx, |repository_handle, cx| {
1667                repository_handle.stage_entries(entries, cx)
1668            })?
1669            .await?;
1670        Ok(proto::Ack {})
1671    }
1672
1673    async fn handle_unstage(
1674        this: Entity<Self>,
1675        envelope: TypedEnvelope<proto::Unstage>,
1676        mut cx: AsyncApp,
1677    ) -> Result<proto::Ack> {
1678        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1679        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1680
1681        let entries = envelope
1682            .payload
1683            .paths
1684            .into_iter()
1685            .map(PathBuf::from)
1686            .map(RepoPath::new)
1687            .collect();
1688
1689        repository_handle
1690            .update(&mut cx, |repository_handle, cx| {
1691                repository_handle.unstage_entries(entries, cx)
1692            })?
1693            .await?;
1694
1695        Ok(proto::Ack {})
1696    }
1697
1698    async fn handle_set_index_text(
1699        this: Entity<Self>,
1700        envelope: TypedEnvelope<proto::SetIndexText>,
1701        mut cx: AsyncApp,
1702    ) -> Result<proto::Ack> {
1703        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1704        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1705        let repo_path = RepoPath::from_str(&envelope.payload.path);
1706
1707        repository_handle
1708            .update(&mut cx, |repository_handle, cx| {
1709                repository_handle.spawn_set_index_text_job(
1710                    repo_path,
1711                    envelope.payload.text,
1712                    None,
1713                    cx,
1714                )
1715            })?
1716            .await??;
1717        Ok(proto::Ack {})
1718    }
1719
1720    async fn handle_commit(
1721        this: Entity<Self>,
1722        envelope: TypedEnvelope<proto::Commit>,
1723        mut cx: AsyncApp,
1724    ) -> Result<proto::Ack> {
1725        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1726        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1727
1728        let message = SharedString::from(envelope.payload.message);
1729        let name = envelope.payload.name.map(SharedString::from);
1730        let email = envelope.payload.email.map(SharedString::from);
1731        let options = envelope.payload.options.unwrap_or_default();
1732
1733        repository_handle
1734            .update(&mut cx, |repository_handle, cx| {
1735                repository_handle.commit(
1736                    message,
1737                    name.zip(email),
1738                    CommitOptions {
1739                        amend: options.amend,
1740                    },
1741                    cx,
1742                )
1743            })?
1744            .await??;
1745        Ok(proto::Ack {})
1746    }
1747
1748    async fn handle_get_remotes(
1749        this: Entity<Self>,
1750        envelope: TypedEnvelope<proto::GetRemotes>,
1751        mut cx: AsyncApp,
1752    ) -> Result<proto::GetRemotesResponse> {
1753        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1754        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1755
1756        let branch_name = envelope.payload.branch_name;
1757
1758        let remotes = repository_handle
1759            .update(&mut cx, |repository_handle, _| {
1760                repository_handle.get_remotes(branch_name)
1761            })?
1762            .await??;
1763
1764        Ok(proto::GetRemotesResponse {
1765            remotes: remotes
1766                .into_iter()
1767                .map(|remotes| proto::get_remotes_response::Remote {
1768                    name: remotes.name.to_string(),
1769                })
1770                .collect::<Vec<_>>(),
1771        })
1772    }
1773
1774    async fn handle_get_branches(
1775        this: Entity<Self>,
1776        envelope: TypedEnvelope<proto::GitGetBranches>,
1777        mut cx: AsyncApp,
1778    ) -> Result<proto::GitBranchesResponse> {
1779        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1780        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1781
1782        let branches = repository_handle
1783            .update(&mut cx, |repository_handle, _| repository_handle.branches())?
1784            .await??;
1785
1786        Ok(proto::GitBranchesResponse {
1787            branches: branches
1788                .into_iter()
1789                .map(|branch| branch_to_proto(&branch))
1790                .collect::<Vec<_>>(),
1791        })
1792    }
1793    async fn handle_create_branch(
1794        this: Entity<Self>,
1795        envelope: TypedEnvelope<proto::GitCreateBranch>,
1796        mut cx: AsyncApp,
1797    ) -> Result<proto::Ack> {
1798        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1799        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1800        let branch_name = envelope.payload.branch_name;
1801
1802        repository_handle
1803            .update(&mut cx, |repository_handle, _| {
1804                repository_handle.create_branch(branch_name)
1805            })?
1806            .await??;
1807
1808        Ok(proto::Ack {})
1809    }
1810
1811    async fn handle_change_branch(
1812        this: Entity<Self>,
1813        envelope: TypedEnvelope<proto::GitChangeBranch>,
1814        mut cx: AsyncApp,
1815    ) -> Result<proto::Ack> {
1816        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1817        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1818        let branch_name = envelope.payload.branch_name;
1819
1820        repository_handle
1821            .update(&mut cx, |repository_handle, _| {
1822                repository_handle.change_branch(branch_name)
1823            })?
1824            .await??;
1825
1826        Ok(proto::Ack {})
1827    }
1828
1829    async fn handle_show(
1830        this: Entity<Self>,
1831        envelope: TypedEnvelope<proto::GitShow>,
1832        mut cx: AsyncApp,
1833    ) -> Result<proto::GitCommitDetails> {
1834        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1835        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1836
1837        let commit = repository_handle
1838            .update(&mut cx, |repository_handle, _| {
1839                repository_handle.show(envelope.payload.commit)
1840            })?
1841            .await??;
1842        Ok(proto::GitCommitDetails {
1843            sha: commit.sha.into(),
1844            message: commit.message.into(),
1845            commit_timestamp: commit.commit_timestamp,
1846            author_email: commit.author_email.into(),
1847            author_name: commit.author_name.into(),
1848        })
1849    }
1850
1851    async fn handle_load_commit_diff(
1852        this: Entity<Self>,
1853        envelope: TypedEnvelope<proto::LoadCommitDiff>,
1854        mut cx: AsyncApp,
1855    ) -> Result<proto::LoadCommitDiffResponse> {
1856        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1857        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1858
1859        let commit_diff = repository_handle
1860            .update(&mut cx, |repository_handle, _| {
1861                repository_handle.load_commit_diff(envelope.payload.commit)
1862            })?
1863            .await??;
1864        Ok(proto::LoadCommitDiffResponse {
1865            files: commit_diff
1866                .files
1867                .into_iter()
1868                .map(|file| proto::CommitFile {
1869                    path: file.path.to_string(),
1870                    old_text: file.old_text,
1871                    new_text: file.new_text,
1872                })
1873                .collect(),
1874        })
1875    }
1876
1877    async fn handle_reset(
1878        this: Entity<Self>,
1879        envelope: TypedEnvelope<proto::GitReset>,
1880        mut cx: AsyncApp,
1881    ) -> Result<proto::Ack> {
1882        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1883        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1884
1885        let mode = match envelope.payload.mode() {
1886            git_reset::ResetMode::Soft => ResetMode::Soft,
1887            git_reset::ResetMode::Mixed => ResetMode::Mixed,
1888        };
1889
1890        repository_handle
1891            .update(&mut cx, |repository_handle, cx| {
1892                repository_handle.reset(envelope.payload.commit, mode, cx)
1893            })?
1894            .await??;
1895        Ok(proto::Ack {})
1896    }
1897
1898    async fn handle_checkout_files(
1899        this: Entity<Self>,
1900        envelope: TypedEnvelope<proto::GitCheckoutFiles>,
1901        mut cx: AsyncApp,
1902    ) -> Result<proto::Ack> {
1903        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1904        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1905        let paths = envelope
1906            .payload
1907            .paths
1908            .iter()
1909            .map(|s| RepoPath::from_str(s))
1910            .collect();
1911
1912        repository_handle
1913            .update(&mut cx, |repository_handle, cx| {
1914                repository_handle.checkout_files(&envelope.payload.commit, paths, cx)
1915            })?
1916            .await??;
1917        Ok(proto::Ack {})
1918    }
1919
1920    async fn handle_open_commit_message_buffer(
1921        this: Entity<Self>,
1922        envelope: TypedEnvelope<proto::OpenCommitMessageBuffer>,
1923        mut cx: AsyncApp,
1924    ) -> Result<proto::OpenBufferResponse> {
1925        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1926        let repository = Self::repository_for_request(&this, repository_id, &mut cx)?;
1927        let buffer = repository
1928            .update(&mut cx, |repository, cx| {
1929                repository.open_commit_buffer(None, this.read(cx).buffer_store.clone(), cx)
1930            })?
1931            .await?;
1932
1933        let buffer_id = buffer.read_with(&cx, |buffer, _| buffer.remote_id())?;
1934        this.update(&mut cx, |this, cx| {
1935            this.buffer_store.update(cx, |buffer_store, cx| {
1936                buffer_store
1937                    .create_buffer_for_peer(
1938                        &buffer,
1939                        envelope.original_sender_id.unwrap_or(envelope.sender_id),
1940                        cx,
1941                    )
1942                    .detach_and_log_err(cx);
1943            })
1944        })?;
1945
1946        Ok(proto::OpenBufferResponse {
1947            buffer_id: buffer_id.to_proto(),
1948        })
1949    }
1950
1951    async fn handle_askpass(
1952        this: Entity<Self>,
1953        envelope: TypedEnvelope<proto::AskPassRequest>,
1954        mut cx: AsyncApp,
1955    ) -> Result<proto::AskPassResponse> {
1956        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1957        let repository = Self::repository_for_request(&this, repository_id, &mut cx)?;
1958
1959        let delegates = cx.update(|cx| repository.read(cx).askpass_delegates.clone())?;
1960        let Some(mut askpass) = delegates.lock().remove(&envelope.payload.askpass_id) else {
1961            debug_panic!("no askpass found");
1962            anyhow::bail!("no askpass found");
1963        };
1964
1965        let response = askpass.ask_password(envelope.payload.prompt).await?;
1966
1967        delegates
1968            .lock()
1969            .insert(envelope.payload.askpass_id, askpass);
1970
1971        Ok(proto::AskPassResponse { response })
1972    }
1973
1974    async fn handle_check_for_pushed_commits(
1975        this: Entity<Self>,
1976        envelope: TypedEnvelope<proto::CheckForPushedCommits>,
1977        mut cx: AsyncApp,
1978    ) -> Result<proto::CheckForPushedCommitsResponse> {
1979        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
1980        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
1981
1982        let branches = repository_handle
1983            .update(&mut cx, |repository_handle, _| {
1984                repository_handle.check_for_pushed_commits()
1985            })?
1986            .await??;
1987        Ok(proto::CheckForPushedCommitsResponse {
1988            pushed_to: branches
1989                .into_iter()
1990                .map(|commit| commit.to_string())
1991                .collect(),
1992        })
1993    }
1994
1995    async fn handle_git_diff(
1996        this: Entity<Self>,
1997        envelope: TypedEnvelope<proto::GitDiff>,
1998        mut cx: AsyncApp,
1999    ) -> Result<proto::GitDiffResponse> {
2000        let repository_id = RepositoryId::from_proto(envelope.payload.repository_id);
2001        let repository_handle = Self::repository_for_request(&this, repository_id, &mut cx)?;
2002        let diff_type = match envelope.payload.diff_type() {
2003            proto::git_diff::DiffType::HeadToIndex => DiffType::HeadToIndex,
2004            proto::git_diff::DiffType::HeadToWorktree => DiffType::HeadToWorktree,
2005        };
2006
2007        let mut diff = repository_handle
2008            .update(&mut cx, |repository_handle, cx| {
2009                repository_handle.diff(diff_type, cx)
2010            })?
2011            .await??;
2012        const ONE_MB: usize = 1_000_000;
2013        if diff.len() > ONE_MB {
2014            diff = diff.chars().take(ONE_MB).collect()
2015        }
2016
2017        Ok(proto::GitDiffResponse { diff })
2018    }
2019
2020    async fn handle_open_unstaged_diff(
2021        this: Entity<Self>,
2022        request: TypedEnvelope<proto::OpenUnstagedDiff>,
2023        mut cx: AsyncApp,
2024    ) -> Result<proto::OpenUnstagedDiffResponse> {
2025        let buffer_id = BufferId::new(request.payload.buffer_id)?;
2026        let diff = this
2027            .update(&mut cx, |this, cx| {
2028                let buffer = this.buffer_store.read(cx).get(buffer_id)?;
2029                Some(this.open_unstaged_diff(buffer, cx))
2030            })?
2031            .context("missing buffer")?
2032            .await?;
2033        this.update(&mut cx, |this, _| {
2034            let shared_diffs = this
2035                .shared_diffs
2036                .entry(request.original_sender_id.unwrap_or(request.sender_id))
2037                .or_default();
2038            shared_diffs.entry(buffer_id).or_default().unstaged = Some(diff.clone());
2039        })?;
2040        let staged_text = diff.read_with(&cx, |diff, _| diff.base_text_string())?;
2041        Ok(proto::OpenUnstagedDiffResponse { staged_text })
2042    }
2043
2044    async fn handle_open_uncommitted_diff(
2045        this: Entity<Self>,
2046        request: TypedEnvelope<proto::OpenUncommittedDiff>,
2047        mut cx: AsyncApp,
2048    ) -> Result<proto::OpenUncommittedDiffResponse> {
2049        let buffer_id = BufferId::new(request.payload.buffer_id)?;
2050        let diff = this
2051            .update(&mut cx, |this, cx| {
2052                let buffer = this.buffer_store.read(cx).get(buffer_id)?;
2053                Some(this.open_uncommitted_diff(buffer, cx))
2054            })?
2055            .context("missing buffer")?
2056            .await?;
2057        this.update(&mut cx, |this, _| {
2058            let shared_diffs = this
2059                .shared_diffs
2060                .entry(request.original_sender_id.unwrap_or(request.sender_id))
2061                .or_default();
2062            shared_diffs.entry(buffer_id).or_default().uncommitted = Some(diff.clone());
2063        })?;
2064        diff.read_with(&cx, |diff, cx| {
2065            use proto::open_uncommitted_diff_response::Mode;
2066
2067            let unstaged_diff = diff.secondary_diff();
2068            let index_snapshot = unstaged_diff.and_then(|diff| {
2069                let diff = diff.read(cx);
2070                diff.base_text_exists().then(|| diff.base_text())
2071            });
2072
2073            let mode;
2074            let staged_text;
2075            let committed_text;
2076            if diff.base_text_exists() {
2077                let committed_snapshot = diff.base_text();
2078                committed_text = Some(committed_snapshot.text());
2079                if let Some(index_text) = index_snapshot {
2080                    if index_text.remote_id() == committed_snapshot.remote_id() {
2081                        mode = Mode::IndexMatchesHead;
2082                        staged_text = None;
2083                    } else {
2084                        mode = Mode::IndexAndHead;
2085                        staged_text = Some(index_text.text());
2086                    }
2087                } else {
2088                    mode = Mode::IndexAndHead;
2089                    staged_text = None;
2090                }
2091            } else {
2092                mode = Mode::IndexAndHead;
2093                committed_text = None;
2094                staged_text = index_snapshot.as_ref().map(|buffer| buffer.text());
2095            }
2096
2097            proto::OpenUncommittedDiffResponse {
2098                committed_text,
2099                staged_text,
2100                mode: mode.into(),
2101            }
2102        })
2103    }
2104
2105    async fn handle_update_diff_bases(
2106        this: Entity<Self>,
2107        request: TypedEnvelope<proto::UpdateDiffBases>,
2108        mut cx: AsyncApp,
2109    ) -> Result<()> {
2110        let buffer_id = BufferId::new(request.payload.buffer_id)?;
2111        this.update(&mut cx, |this, cx| {
2112            if let Some(diff_state) = this.diffs.get_mut(&buffer_id) {
2113                if let Some(buffer) = this.buffer_store.read(cx).get(buffer_id) {
2114                    let buffer = buffer.read(cx).text_snapshot();
2115                    diff_state.update(cx, |diff_state, cx| {
2116                        diff_state.handle_base_texts_updated(buffer, request.payload, cx);
2117                    })
2118                }
2119            }
2120        })
2121    }
2122
2123    async fn handle_blame_buffer(
2124        this: Entity<Self>,
2125        envelope: TypedEnvelope<proto::BlameBuffer>,
2126        mut cx: AsyncApp,
2127    ) -> Result<proto::BlameBufferResponse> {
2128        let buffer_id = BufferId::new(envelope.payload.buffer_id)?;
2129        let version = deserialize_version(&envelope.payload.version);
2130        let buffer = this.read_with(&cx, |this, cx| {
2131            this.buffer_store.read(cx).get_existing(buffer_id)
2132        })??;
2133        buffer
2134            .update(&mut cx, |buffer, _| {
2135                buffer.wait_for_version(version.clone())
2136            })?
2137            .await?;
2138        let blame = this
2139            .update(&mut cx, |this, cx| {
2140                this.blame_buffer(&buffer, Some(version), cx)
2141            })?
2142            .await?;
2143        Ok(serialize_blame_buffer_response(blame))
2144    }
2145
2146    async fn handle_get_permalink_to_line(
2147        this: Entity<Self>,
2148        envelope: TypedEnvelope<proto::GetPermalinkToLine>,
2149        mut cx: AsyncApp,
2150    ) -> Result<proto::GetPermalinkToLineResponse> {
2151        let buffer_id = BufferId::new(envelope.payload.buffer_id)?;
2152        // let version = deserialize_version(&envelope.payload.version);
2153        let selection = {
2154            let proto_selection = envelope
2155                .payload
2156                .selection
2157                .context("no selection to get permalink for defined")?;
2158            proto_selection.start as u32..proto_selection.end as u32
2159        };
2160        let buffer = this.read_with(&cx, |this, cx| {
2161            this.buffer_store.read(cx).get_existing(buffer_id)
2162        })??;
2163        let permalink = this
2164            .update(&mut cx, |this, cx| {
2165                this.get_permalink_to_line(&buffer, selection, cx)
2166            })?
2167            .await?;
2168        Ok(proto::GetPermalinkToLineResponse {
2169            permalink: permalink.to_string(),
2170        })
2171    }
2172
2173    fn repository_for_request(
2174        this: &Entity<Self>,
2175        id: RepositoryId,
2176        cx: &mut AsyncApp,
2177    ) -> Result<Entity<Repository>> {
2178        this.read_with(cx, |this, _| {
2179            this.repositories
2180                .get(&id)
2181                .context("missing repository handle")
2182                .cloned()
2183        })?
2184    }
2185
2186    pub fn repo_snapshots(&self, cx: &App) -> HashMap<RepositoryId, RepositorySnapshot> {
2187        self.repositories
2188            .iter()
2189            .map(|(id, repo)| (*id, repo.read(cx).snapshot.clone()))
2190            .collect()
2191    }
2192}
2193
2194impl BufferGitState {
2195    fn new(_git_store: WeakEntity<GitStore>) -> Self {
2196        Self {
2197            unstaged_diff: Default::default(),
2198            uncommitted_diff: Default::default(),
2199            recalculate_diff_task: Default::default(),
2200            language: Default::default(),
2201            language_registry: Default::default(),
2202            recalculating_tx: postage::watch::channel_with(false).0,
2203            hunk_staging_operation_count: 0,
2204            hunk_staging_operation_count_as_of_write: 0,
2205            head_text: Default::default(),
2206            index_text: Default::default(),
2207            head_changed: Default::default(),
2208            index_changed: Default::default(),
2209            language_changed: Default::default(),
2210            conflict_updated_futures: Default::default(),
2211            conflict_set: Default::default(),
2212            reparse_conflict_markers_task: Default::default(),
2213        }
2214    }
2215
2216    fn buffer_language_changed(&mut self, buffer: Entity<Buffer>, cx: &mut Context<Self>) {
2217        self.language = buffer.read(cx).language().cloned();
2218        self.language_changed = true;
2219        let _ = self.recalculate_diffs(buffer.read(cx).text_snapshot(), cx);
2220    }
2221
2222    fn reparse_conflict_markers(
2223        &mut self,
2224        buffer: text::BufferSnapshot,
2225        cx: &mut Context<Self>,
2226    ) -> oneshot::Receiver<()> {
2227        let (tx, rx) = oneshot::channel();
2228
2229        let Some(conflict_set) = self
2230            .conflict_set
2231            .as_ref()
2232            .and_then(|conflict_set| conflict_set.upgrade())
2233        else {
2234            return rx;
2235        };
2236
2237        let old_snapshot = conflict_set.read_with(cx, |conflict_set, _| {
2238            if conflict_set.has_conflict {
2239                Some(conflict_set.snapshot())
2240            } else {
2241                None
2242            }
2243        });
2244
2245        if let Some(old_snapshot) = old_snapshot {
2246            self.conflict_updated_futures.push(tx);
2247            self.reparse_conflict_markers_task = Some(cx.spawn(async move |this, cx| {
2248                let (snapshot, changed_range) = cx
2249                    .background_spawn(async move {
2250                        let new_snapshot = ConflictSet::parse(&buffer);
2251                        let changed_range = old_snapshot.compare(&new_snapshot, &buffer);
2252                        (new_snapshot, changed_range)
2253                    })
2254                    .await;
2255                this.update(cx, |this, cx| {
2256                    if let Some(conflict_set) = &this.conflict_set {
2257                        conflict_set
2258                            .update(cx, |conflict_set, cx| {
2259                                conflict_set.set_snapshot(snapshot, changed_range, cx);
2260                            })
2261                            .ok();
2262                    }
2263                    let futures = std::mem::take(&mut this.conflict_updated_futures);
2264                    for tx in futures {
2265                        tx.send(()).ok();
2266                    }
2267                })
2268            }))
2269        }
2270
2271        rx
2272    }
2273
2274    fn unstaged_diff(&self) -> Option<Entity<BufferDiff>> {
2275        self.unstaged_diff.as_ref().and_then(|set| set.upgrade())
2276    }
2277
2278    fn uncommitted_diff(&self) -> Option<Entity<BufferDiff>> {
2279        self.uncommitted_diff.as_ref().and_then(|set| set.upgrade())
2280    }
2281
2282    fn handle_base_texts_updated(
2283        &mut self,
2284        buffer: text::BufferSnapshot,
2285        message: proto::UpdateDiffBases,
2286        cx: &mut Context<Self>,
2287    ) {
2288        use proto::update_diff_bases::Mode;
2289
2290        let Some(mode) = Mode::from_i32(message.mode) else {
2291            return;
2292        };
2293
2294        let diff_bases_change = match mode {
2295            Mode::HeadOnly => DiffBasesChange::SetHead(message.committed_text),
2296            Mode::IndexOnly => DiffBasesChange::SetIndex(message.staged_text),
2297            Mode::IndexMatchesHead => DiffBasesChange::SetBoth(message.committed_text),
2298            Mode::IndexAndHead => DiffBasesChange::SetEach {
2299                index: message.staged_text,
2300                head: message.committed_text,
2301            },
2302        };
2303
2304        self.diff_bases_changed(buffer, Some(diff_bases_change), cx);
2305    }
2306
2307    pub fn wait_for_recalculation(&mut self) -> Option<impl Future<Output = ()> + use<>> {
2308        if *self.recalculating_tx.borrow() {
2309            let mut rx = self.recalculating_tx.subscribe();
2310            return Some(async move {
2311                loop {
2312                    let is_recalculating = rx.recv().await;
2313                    if is_recalculating != Some(true) {
2314                        break;
2315                    }
2316                }
2317            });
2318        } else {
2319            None
2320        }
2321    }
2322
2323    fn diff_bases_changed(
2324        &mut self,
2325        buffer: text::BufferSnapshot,
2326        diff_bases_change: Option<DiffBasesChange>,
2327        cx: &mut Context<Self>,
2328    ) {
2329        match diff_bases_change {
2330            Some(DiffBasesChange::SetIndex(index)) => {
2331                self.index_text = index.map(|mut index| {
2332                    text::LineEnding::normalize(&mut index);
2333                    Arc::new(index)
2334                });
2335                self.index_changed = true;
2336            }
2337            Some(DiffBasesChange::SetHead(head)) => {
2338                self.head_text = head.map(|mut head| {
2339                    text::LineEnding::normalize(&mut head);
2340                    Arc::new(head)
2341                });
2342                self.head_changed = true;
2343            }
2344            Some(DiffBasesChange::SetBoth(text)) => {
2345                let text = text.map(|mut text| {
2346                    text::LineEnding::normalize(&mut text);
2347                    Arc::new(text)
2348                });
2349                self.head_text = text.clone();
2350                self.index_text = text;
2351                self.head_changed = true;
2352                self.index_changed = true;
2353            }
2354            Some(DiffBasesChange::SetEach { index, head }) => {
2355                self.index_text = index.map(|mut index| {
2356                    text::LineEnding::normalize(&mut index);
2357                    Arc::new(index)
2358                });
2359                self.index_changed = true;
2360                self.head_text = head.map(|mut head| {
2361                    text::LineEnding::normalize(&mut head);
2362                    Arc::new(head)
2363                });
2364                self.head_changed = true;
2365            }
2366            None => {}
2367        }
2368
2369        self.recalculate_diffs(buffer, cx)
2370    }
2371
2372    fn recalculate_diffs(&mut self, buffer: text::BufferSnapshot, cx: &mut Context<Self>) {
2373        *self.recalculating_tx.borrow_mut() = true;
2374
2375        let language = self.language.clone();
2376        let language_registry = self.language_registry.clone();
2377        let unstaged_diff = self.unstaged_diff();
2378        let uncommitted_diff = self.uncommitted_diff();
2379        let head = self.head_text.clone();
2380        let index = self.index_text.clone();
2381        let index_changed = self.index_changed;
2382        let head_changed = self.head_changed;
2383        let language_changed = self.language_changed;
2384        let prev_hunk_staging_operation_count = self.hunk_staging_operation_count_as_of_write;
2385        let index_matches_head = match (self.index_text.as_ref(), self.head_text.as_ref()) {
2386            (Some(index), Some(head)) => Arc::ptr_eq(index, head),
2387            (None, None) => true,
2388            _ => false,
2389        };
2390        self.recalculate_diff_task = Some(cx.spawn(async move |this, cx| {
2391            log::debug!(
2392                "start recalculating diffs for buffer {}",
2393                buffer.remote_id()
2394            );
2395
2396            let mut new_unstaged_diff = None;
2397            if let Some(unstaged_diff) = &unstaged_diff {
2398                new_unstaged_diff = Some(
2399                    BufferDiff::update_diff(
2400                        unstaged_diff.clone(),
2401                        buffer.clone(),
2402                        index,
2403                        index_changed,
2404                        language_changed,
2405                        language.clone(),
2406                        language_registry.clone(),
2407                        cx,
2408                    )
2409                    .await?,
2410                );
2411            }
2412
2413            let mut new_uncommitted_diff = None;
2414            if let Some(uncommitted_diff) = &uncommitted_diff {
2415                new_uncommitted_diff = if index_matches_head {
2416                    new_unstaged_diff.clone()
2417                } else {
2418                    Some(
2419                        BufferDiff::update_diff(
2420                            uncommitted_diff.clone(),
2421                            buffer.clone(),
2422                            head,
2423                            head_changed,
2424                            language_changed,
2425                            language.clone(),
2426                            language_registry.clone(),
2427                            cx,
2428                        )
2429                        .await?,
2430                    )
2431                }
2432            }
2433
2434            let cancel = this.update(cx, |this, _| {
2435                // This checks whether all pending stage/unstage operations
2436                // have quiesced (i.e. both the corresponding write and the
2437                // read of that write have completed). If not, then we cancel
2438                // this recalculation attempt to avoid invalidating pending
2439                // state too quickly; another recalculation will come along
2440                // later and clear the pending state once the state of the index has settled.
2441                if this.hunk_staging_operation_count > prev_hunk_staging_operation_count {
2442                    *this.recalculating_tx.borrow_mut() = false;
2443                    true
2444                } else {
2445                    false
2446                }
2447            })?;
2448            if cancel {
2449                log::debug!(
2450                    concat!(
2451                        "aborting recalculating diffs for buffer {}",
2452                        "due to subsequent hunk operations",
2453                    ),
2454                    buffer.remote_id()
2455                );
2456                return Ok(());
2457            }
2458
2459            let unstaged_changed_range = if let Some((unstaged_diff, new_unstaged_diff)) =
2460                unstaged_diff.as_ref().zip(new_unstaged_diff.clone())
2461            {
2462                unstaged_diff.update(cx, |diff, cx| {
2463                    if language_changed {
2464                        diff.language_changed(cx);
2465                    }
2466                    diff.set_snapshot(new_unstaged_diff, &buffer, cx)
2467                })?
2468            } else {
2469                None
2470            };
2471
2472            if let Some((uncommitted_diff, new_uncommitted_diff)) =
2473                uncommitted_diff.as_ref().zip(new_uncommitted_diff.clone())
2474            {
2475                uncommitted_diff.update(cx, |diff, cx| {
2476                    if language_changed {
2477                        diff.language_changed(cx);
2478                    }
2479                    diff.set_snapshot_with_secondary(
2480                        new_uncommitted_diff,
2481                        &buffer,
2482                        unstaged_changed_range,
2483                        true,
2484                        cx,
2485                    );
2486                })?;
2487            }
2488
2489            log::debug!(
2490                "finished recalculating diffs for buffer {}",
2491                buffer.remote_id()
2492            );
2493
2494            if let Some(this) = this.upgrade() {
2495                this.update(cx, |this, _| {
2496                    this.index_changed = false;
2497                    this.head_changed = false;
2498                    this.language_changed = false;
2499                    *this.recalculating_tx.borrow_mut() = false;
2500                })?;
2501            }
2502
2503            Ok(())
2504        }));
2505    }
2506}
2507
2508fn make_remote_delegate(
2509    this: Entity<GitStore>,
2510    project_id: u64,
2511    repository_id: RepositoryId,
2512    askpass_id: u64,
2513    cx: &mut AsyncApp,
2514) -> AskPassDelegate {
2515    AskPassDelegate::new(cx, move |prompt, tx, cx| {
2516        this.update(cx, |this, cx| {
2517            let Some((client, _)) = this.downstream_client() else {
2518                return;
2519            };
2520            let response = client.request(proto::AskPassRequest {
2521                project_id,
2522                repository_id: repository_id.to_proto(),
2523                askpass_id,
2524                prompt,
2525            });
2526            cx.spawn(async move |_, _| {
2527                tx.send(response.await?.response).ok();
2528                anyhow::Ok(())
2529            })
2530            .detach_and_log_err(cx);
2531        })
2532        .log_err();
2533    })
2534}
2535
2536impl RepositoryId {
2537    pub fn to_proto(self) -> u64 {
2538        self.0
2539    }
2540
2541    pub fn from_proto(id: u64) -> Self {
2542        RepositoryId(id)
2543    }
2544}
2545
2546impl RepositorySnapshot {
2547    fn empty(id: RepositoryId, work_directory_abs_path: Arc<Path>) -> Self {
2548        Self {
2549            id,
2550            statuses_by_path: Default::default(),
2551            work_directory_abs_path,
2552            branch: None,
2553            head_commit: None,
2554            scan_id: 0,
2555            merge: Default::default(),
2556        }
2557    }
2558
2559    fn initial_update(&self, project_id: u64) -> proto::UpdateRepository {
2560        proto::UpdateRepository {
2561            branch_summary: self.branch.as_ref().map(branch_to_proto),
2562            head_commit_details: self.head_commit.as_ref().map(commit_details_to_proto),
2563            updated_statuses: self
2564                .statuses_by_path
2565                .iter()
2566                .map(|entry| entry.to_proto())
2567                .collect(),
2568            removed_statuses: Default::default(),
2569            current_merge_conflicts: self
2570                .merge
2571                .conflicted_paths
2572                .iter()
2573                .map(|repo_path| repo_path.to_proto())
2574                .collect(),
2575            project_id,
2576            id: self.id.to_proto(),
2577            abs_path: self.work_directory_abs_path.to_proto(),
2578            entry_ids: vec![self.id.to_proto()],
2579            scan_id: self.scan_id,
2580            is_last_update: true,
2581        }
2582    }
2583
2584    fn build_update(&self, old: &Self, project_id: u64) -> proto::UpdateRepository {
2585        let mut updated_statuses: Vec<proto::StatusEntry> = Vec::new();
2586        let mut removed_statuses: Vec<String> = Vec::new();
2587
2588        let mut new_statuses = self.statuses_by_path.iter().peekable();
2589        let mut old_statuses = old.statuses_by_path.iter().peekable();
2590
2591        let mut current_new_entry = new_statuses.next();
2592        let mut current_old_entry = old_statuses.next();
2593        loop {
2594            match (current_new_entry, current_old_entry) {
2595                (Some(new_entry), Some(old_entry)) => {
2596                    match new_entry.repo_path.cmp(&old_entry.repo_path) {
2597                        Ordering::Less => {
2598                            updated_statuses.push(new_entry.to_proto());
2599                            current_new_entry = new_statuses.next();
2600                        }
2601                        Ordering::Equal => {
2602                            if new_entry.status != old_entry.status {
2603                                updated_statuses.push(new_entry.to_proto());
2604                            }
2605                            current_old_entry = old_statuses.next();
2606                            current_new_entry = new_statuses.next();
2607                        }
2608                        Ordering::Greater => {
2609                            removed_statuses.push(old_entry.repo_path.as_ref().to_proto());
2610                            current_old_entry = old_statuses.next();
2611                        }
2612                    }
2613                }
2614                (None, Some(old_entry)) => {
2615                    removed_statuses.push(old_entry.repo_path.as_ref().to_proto());
2616                    current_old_entry = old_statuses.next();
2617                }
2618                (Some(new_entry), None) => {
2619                    updated_statuses.push(new_entry.to_proto());
2620                    current_new_entry = new_statuses.next();
2621                }
2622                (None, None) => break,
2623            }
2624        }
2625
2626        proto::UpdateRepository {
2627            branch_summary: self.branch.as_ref().map(branch_to_proto),
2628            head_commit_details: self.head_commit.as_ref().map(commit_details_to_proto),
2629            updated_statuses,
2630            removed_statuses,
2631            current_merge_conflicts: self
2632                .merge
2633                .conflicted_paths
2634                .iter()
2635                .map(|path| path.as_ref().to_proto())
2636                .collect(),
2637            project_id,
2638            id: self.id.to_proto(),
2639            abs_path: self.work_directory_abs_path.to_proto(),
2640            entry_ids: vec![],
2641            scan_id: self.scan_id,
2642            is_last_update: true,
2643        }
2644    }
2645
2646    pub fn status(&self) -> impl Iterator<Item = StatusEntry> + '_ {
2647        self.statuses_by_path.iter().cloned()
2648    }
2649
2650    pub fn status_summary(&self) -> GitSummary {
2651        self.statuses_by_path.summary().item_summary
2652    }
2653
2654    pub fn status_for_path(&self, path: &RepoPath) -> Option<StatusEntry> {
2655        self.statuses_by_path
2656            .get(&PathKey(path.0.clone()), &())
2657            .cloned()
2658    }
2659
2660    pub fn abs_path_to_repo_path(&self, abs_path: &Path) -> Option<RepoPath> {
2661        abs_path
2662            .strip_prefix(&self.work_directory_abs_path)
2663            .map(RepoPath::from)
2664            .ok()
2665    }
2666
2667    pub fn had_conflict_on_last_merge_head_change(&self, repo_path: &RepoPath) -> bool {
2668        self.merge.conflicted_paths.contains(&repo_path)
2669    }
2670
2671    pub fn has_conflict(&self, repo_path: &RepoPath) -> bool {
2672        let had_conflict_on_last_merge_head_change =
2673            self.merge.conflicted_paths.contains(&repo_path);
2674        let has_conflict_currently = self
2675            .status_for_path(&repo_path)
2676            .map_or(false, |entry| entry.status.is_conflicted());
2677        had_conflict_on_last_merge_head_change || has_conflict_currently
2678    }
2679
2680    /// This is the name that will be displayed in the repository selector for this repository.
2681    pub fn display_name(&self) -> SharedString {
2682        self.work_directory_abs_path
2683            .file_name()
2684            .unwrap_or_default()
2685            .to_string_lossy()
2686            .to_string()
2687            .into()
2688    }
2689}
2690
2691impl MergeDetails {
2692    async fn load(
2693        backend: &Arc<dyn GitRepository>,
2694        status: &SumTree<StatusEntry>,
2695        prev_snapshot: &RepositorySnapshot,
2696    ) -> Result<(MergeDetails, bool)> {
2697        log::debug!("load merge details");
2698        let message = backend.merge_message().await;
2699        let heads = backend
2700            .revparse_batch(vec![
2701                "MERGE_HEAD".into(),
2702                "CHERRY_PICK_HEAD".into(),
2703                "REBASE_HEAD".into(),
2704                "REVERT_HEAD".into(),
2705                "APPLY_HEAD".into(),
2706            ])
2707            .await
2708            .log_err()
2709            .unwrap_or_default()
2710            .into_iter()
2711            .map(|opt| opt.map(SharedString::from))
2712            .collect::<Vec<_>>();
2713        let merge_heads_changed = heads != prev_snapshot.merge.heads;
2714        let conflicted_paths = if merge_heads_changed {
2715            let current_conflicted_paths = TreeSet::from_ordered_entries(
2716                status
2717                    .iter()
2718                    .filter(|entry| entry.status.is_conflicted())
2719                    .map(|entry| entry.repo_path.clone()),
2720            );
2721
2722            // It can happen that we run a scan while a lengthy merge is in progress
2723            // that will eventually result in conflicts, but before those conflicts
2724            // are reported by `git status`. Since for the moment we only care about
2725            // the merge heads state for the purposes of tracking conflicts, don't update
2726            // this state until we see some conflicts.
2727            if heads.iter().any(Option::is_some)
2728                && !prev_snapshot.merge.heads.iter().any(Option::is_some)
2729                && current_conflicted_paths.is_empty()
2730            {
2731                log::debug!("not updating merge heads because no conflicts found");
2732                return Ok((
2733                    MergeDetails {
2734                        message: message.map(SharedString::from),
2735                        ..prev_snapshot.merge.clone()
2736                    },
2737                    false,
2738                ));
2739            }
2740
2741            current_conflicted_paths
2742        } else {
2743            prev_snapshot.merge.conflicted_paths.clone()
2744        };
2745        let details = MergeDetails {
2746            conflicted_paths,
2747            message: message.map(SharedString::from),
2748            heads,
2749        };
2750        Ok((details, merge_heads_changed))
2751    }
2752}
2753
2754impl Repository {
2755    pub fn snapshot(&self) -> RepositorySnapshot {
2756        self.snapshot.clone()
2757    }
2758
2759    fn local(
2760        id: RepositoryId,
2761        work_directory_abs_path: Arc<Path>,
2762        dot_git_abs_path: Arc<Path>,
2763        repository_dir_abs_path: Arc<Path>,
2764        common_dir_abs_path: Arc<Path>,
2765        project_environment: WeakEntity<ProjectEnvironment>,
2766        fs: Arc<dyn Fs>,
2767        git_store: WeakEntity<GitStore>,
2768        cx: &mut Context<Self>,
2769    ) -> Self {
2770        let snapshot = RepositorySnapshot::empty(id, work_directory_abs_path.clone());
2771        Repository {
2772            this: cx.weak_entity(),
2773            git_store,
2774            snapshot,
2775            commit_message_buffer: None,
2776            askpass_delegates: Default::default(),
2777            paths_needing_status_update: Default::default(),
2778            latest_askpass_id: 0,
2779            job_sender: Repository::spawn_local_git_worker(
2780                work_directory_abs_path,
2781                dot_git_abs_path,
2782                repository_dir_abs_path,
2783                common_dir_abs_path,
2784                project_environment,
2785                fs,
2786                cx,
2787            ),
2788            job_id: 0,
2789            active_jobs: Default::default(),
2790        }
2791    }
2792
2793    fn remote(
2794        id: RepositoryId,
2795        work_directory_abs_path: Arc<Path>,
2796        project_id: ProjectId,
2797        client: AnyProtoClient,
2798        git_store: WeakEntity<GitStore>,
2799        cx: &mut Context<Self>,
2800    ) -> Self {
2801        let snapshot = RepositorySnapshot::empty(id, work_directory_abs_path);
2802        Self {
2803            this: cx.weak_entity(),
2804            snapshot,
2805            commit_message_buffer: None,
2806            git_store,
2807            paths_needing_status_update: Default::default(),
2808            job_sender: Self::spawn_remote_git_worker(project_id, client, cx),
2809            askpass_delegates: Default::default(),
2810            latest_askpass_id: 0,
2811            active_jobs: Default::default(),
2812            job_id: 0,
2813        }
2814    }
2815
2816    pub fn git_store(&self) -> Option<Entity<GitStore>> {
2817        self.git_store.upgrade()
2818    }
2819
2820    fn reload_buffer_diff_bases(&mut self, cx: &mut Context<Self>) {
2821        let this = cx.weak_entity();
2822        let git_store = self.git_store.clone();
2823        let _ = self.send_keyed_job(
2824            Some(GitJobKey::ReloadBufferDiffBases),
2825            None,
2826            |state, mut cx| async move {
2827                let RepositoryState::Local { backend, .. } = state else {
2828                    log::error!("tried to recompute diffs for a non-local repository");
2829                    return Ok(());
2830                };
2831
2832                let Some(this) = this.upgrade() else {
2833                    return Ok(());
2834                };
2835
2836                let repo_diff_state_updates = this.update(&mut cx, |this, cx| {
2837                    git_store.update(cx, |git_store, cx| {
2838                        git_store
2839                            .diffs
2840                            .iter()
2841                            .filter_map(|(buffer_id, diff_state)| {
2842                                let buffer_store = git_store.buffer_store.read(cx);
2843                                let buffer = buffer_store.get(*buffer_id)?;
2844                                let file = File::from_dyn(buffer.read(cx).file())?;
2845                                let abs_path =
2846                                    file.worktree.read(cx).absolutize(&file.path).ok()?;
2847                                let repo_path = this.abs_path_to_repo_path(&abs_path)?;
2848                                log::debug!(
2849                                    "start reload diff bases for repo path {}",
2850                                    repo_path.0.display()
2851                                );
2852                                diff_state.update(cx, |diff_state, _| {
2853                                    let has_unstaged_diff = diff_state
2854                                        .unstaged_diff
2855                                        .as_ref()
2856                                        .is_some_and(|diff| diff.is_upgradable());
2857                                    let has_uncommitted_diff = diff_state
2858                                        .uncommitted_diff
2859                                        .as_ref()
2860                                        .is_some_and(|set| set.is_upgradable());
2861
2862                                    Some((
2863                                        buffer,
2864                                        repo_path,
2865                                        has_unstaged_diff.then(|| diff_state.index_text.clone()),
2866                                        has_uncommitted_diff.then(|| diff_state.head_text.clone()),
2867                                    ))
2868                                })
2869                            })
2870                            .collect::<Vec<_>>()
2871                    })
2872                })??;
2873
2874                let buffer_diff_base_changes = cx
2875                    .background_spawn(async move {
2876                        let mut changes = Vec::new();
2877                        for (buffer, repo_path, current_index_text, current_head_text) in
2878                            &repo_diff_state_updates
2879                        {
2880                            let index_text = if current_index_text.is_some() {
2881                                backend.load_index_text(repo_path.clone()).await
2882                            } else {
2883                                None
2884                            };
2885                            let head_text = if current_head_text.is_some() {
2886                                backend.load_committed_text(repo_path.clone()).await
2887                            } else {
2888                                None
2889                            };
2890
2891                            let change =
2892                                match (current_index_text.as_ref(), current_head_text.as_ref()) {
2893                                    (Some(current_index), Some(current_head)) => {
2894                                        let index_changed =
2895                                            index_text.as_ref() != current_index.as_deref();
2896                                        let head_changed =
2897                                            head_text.as_ref() != current_head.as_deref();
2898                                        if index_changed && head_changed {
2899                                            if index_text == head_text {
2900                                                Some(DiffBasesChange::SetBoth(head_text))
2901                                            } else {
2902                                                Some(DiffBasesChange::SetEach {
2903                                                    index: index_text,
2904                                                    head: head_text,
2905                                                })
2906                                            }
2907                                        } else if index_changed {
2908                                            Some(DiffBasesChange::SetIndex(index_text))
2909                                        } else if head_changed {
2910                                            Some(DiffBasesChange::SetHead(head_text))
2911                                        } else {
2912                                            None
2913                                        }
2914                                    }
2915                                    (Some(current_index), None) => {
2916                                        let index_changed =
2917                                            index_text.as_ref() != current_index.as_deref();
2918                                        index_changed
2919                                            .then_some(DiffBasesChange::SetIndex(index_text))
2920                                    }
2921                                    (None, Some(current_head)) => {
2922                                        let head_changed =
2923                                            head_text.as_ref() != current_head.as_deref();
2924                                        head_changed.then_some(DiffBasesChange::SetHead(head_text))
2925                                    }
2926                                    (None, None) => None,
2927                                };
2928
2929                            changes.push((buffer.clone(), change))
2930                        }
2931                        changes
2932                    })
2933                    .await;
2934
2935                git_store.update(&mut cx, |git_store, cx| {
2936                    for (buffer, diff_bases_change) in buffer_diff_base_changes {
2937                        let buffer_snapshot = buffer.read(cx).text_snapshot();
2938                        let buffer_id = buffer_snapshot.remote_id();
2939                        let Some(diff_state) = git_store.diffs.get(&buffer_id) else {
2940                            continue;
2941                        };
2942
2943                        let downstream_client = git_store.downstream_client();
2944                        diff_state.update(cx, |diff_state, cx| {
2945                            use proto::update_diff_bases::Mode;
2946
2947                            if let Some((diff_bases_change, (client, project_id))) =
2948                                diff_bases_change.clone().zip(downstream_client)
2949                            {
2950                                let (staged_text, committed_text, mode) = match diff_bases_change {
2951                                    DiffBasesChange::SetIndex(index) => {
2952                                        (index, None, Mode::IndexOnly)
2953                                    }
2954                                    DiffBasesChange::SetHead(head) => (None, head, Mode::HeadOnly),
2955                                    DiffBasesChange::SetEach { index, head } => {
2956                                        (index, head, Mode::IndexAndHead)
2957                                    }
2958                                    DiffBasesChange::SetBoth(text) => {
2959                                        (None, text, Mode::IndexMatchesHead)
2960                                    }
2961                                };
2962                                client
2963                                    .send(proto::UpdateDiffBases {
2964                                        project_id: project_id.to_proto(),
2965                                        buffer_id: buffer_id.to_proto(),
2966                                        staged_text,
2967                                        committed_text,
2968                                        mode: mode as i32,
2969                                    })
2970                                    .log_err();
2971                            }
2972
2973                            diff_state.diff_bases_changed(buffer_snapshot, diff_bases_change, cx);
2974                        });
2975                    }
2976                })
2977            },
2978        );
2979    }
2980
2981    pub fn send_job<F, Fut, R>(
2982        &mut self,
2983        status: Option<SharedString>,
2984        job: F,
2985    ) -> oneshot::Receiver<R>
2986    where
2987        F: FnOnce(RepositoryState, AsyncApp) -> Fut + 'static,
2988        Fut: Future<Output = R> + 'static,
2989        R: Send + 'static,
2990    {
2991        self.send_keyed_job(None, status, job)
2992    }
2993
2994    fn send_keyed_job<F, Fut, R>(
2995        &mut self,
2996        key: Option<GitJobKey>,
2997        status: Option<SharedString>,
2998        job: F,
2999    ) -> oneshot::Receiver<R>
3000    where
3001        F: FnOnce(RepositoryState, AsyncApp) -> Fut + 'static,
3002        Fut: Future<Output = R> + 'static,
3003        R: Send + 'static,
3004    {
3005        let (result_tx, result_rx) = futures::channel::oneshot::channel();
3006        let job_id = post_inc(&mut self.job_id);
3007        let this = self.this.clone();
3008        self.job_sender
3009            .unbounded_send(GitJob {
3010                key,
3011                job: Box::new(move |state, cx: &mut AsyncApp| {
3012                    let job = job(state, cx.clone());
3013                    cx.spawn(async move |cx| {
3014                        if let Some(s) = status.clone() {
3015                            this.update(cx, |this, cx| {
3016                                this.active_jobs.insert(
3017                                    job_id,
3018                                    JobInfo {
3019                                        start: Instant::now(),
3020                                        message: s.clone(),
3021                                    },
3022                                );
3023
3024                                cx.notify();
3025                            })
3026                            .ok();
3027                        }
3028                        let result = job.await;
3029
3030                        this.update(cx, |this, cx| {
3031                            this.active_jobs.remove(&job_id);
3032                            cx.notify();
3033                        })
3034                        .ok();
3035
3036                        result_tx.send(result).ok();
3037                    })
3038                }),
3039            })
3040            .ok();
3041        result_rx
3042    }
3043
3044    pub fn set_as_active_repository(&self, cx: &mut Context<Self>) {
3045        let Some(git_store) = self.git_store.upgrade() else {
3046            return;
3047        };
3048        let entity = cx.entity();
3049        git_store.update(cx, |git_store, cx| {
3050            let Some((&id, _)) = git_store
3051                .repositories
3052                .iter()
3053                .find(|(_, handle)| *handle == &entity)
3054            else {
3055                return;
3056            };
3057            git_store.active_repo_id = Some(id);
3058            cx.emit(GitStoreEvent::ActiveRepositoryChanged(Some(id)));
3059        });
3060    }
3061
3062    pub fn cached_status(&self) -> impl '_ + Iterator<Item = StatusEntry> {
3063        self.snapshot.status()
3064    }
3065
3066    pub fn repo_path_to_project_path(&self, path: &RepoPath, cx: &App) -> Option<ProjectPath> {
3067        let git_store = self.git_store.upgrade()?;
3068        let worktree_store = git_store.read(cx).worktree_store.read(cx);
3069        let abs_path = self.snapshot.work_directory_abs_path.join(&path.0);
3070        let (worktree, relative_path) = worktree_store.find_worktree(abs_path, cx)?;
3071        Some(ProjectPath {
3072            worktree_id: worktree.read(cx).id(),
3073            path: relative_path.into(),
3074        })
3075    }
3076
3077    pub fn project_path_to_repo_path(&self, path: &ProjectPath, cx: &App) -> Option<RepoPath> {
3078        let git_store = self.git_store.upgrade()?;
3079        let worktree_store = git_store.read(cx).worktree_store.read(cx);
3080        let abs_path = worktree_store.absolutize(path, cx)?;
3081        self.snapshot.abs_path_to_repo_path(&abs_path)
3082    }
3083
3084    pub fn contains_sub_repo(&self, other: &Entity<Self>, cx: &App) -> bool {
3085        other
3086            .read(cx)
3087            .snapshot
3088            .work_directory_abs_path
3089            .starts_with(&self.snapshot.work_directory_abs_path)
3090    }
3091
3092    pub fn open_commit_buffer(
3093        &mut self,
3094        languages: Option<Arc<LanguageRegistry>>,
3095        buffer_store: Entity<BufferStore>,
3096        cx: &mut Context<Self>,
3097    ) -> Task<Result<Entity<Buffer>>> {
3098        let id = self.id;
3099        if let Some(buffer) = self.commit_message_buffer.clone() {
3100            return Task::ready(Ok(buffer));
3101        }
3102        let this = cx.weak_entity();
3103
3104        let rx = self.send_job(None, move |state, mut cx| async move {
3105            let Some(this) = this.upgrade() else {
3106                bail!("git store was dropped");
3107            };
3108            match state {
3109                RepositoryState::Local { .. } => {
3110                    this.update(&mut cx, |_, cx| {
3111                        Self::open_local_commit_buffer(languages, buffer_store, cx)
3112                    })?
3113                    .await
3114                }
3115                RepositoryState::Remote { project_id, client } => {
3116                    let request = client.request(proto::OpenCommitMessageBuffer {
3117                        project_id: project_id.0,
3118                        repository_id: id.to_proto(),
3119                    });
3120                    let response = request.await.context("requesting to open commit buffer")?;
3121                    let buffer_id = BufferId::new(response.buffer_id)?;
3122                    let buffer = buffer_store
3123                        .update(&mut cx, |buffer_store, cx| {
3124                            buffer_store.wait_for_remote_buffer(buffer_id, cx)
3125                        })?
3126                        .await?;
3127                    if let Some(language_registry) = languages {
3128                        let git_commit_language =
3129                            language_registry.language_for_name("Git Commit").await?;
3130                        buffer.update(&mut cx, |buffer, cx| {
3131                            buffer.set_language(Some(git_commit_language), cx);
3132                        })?;
3133                    }
3134                    this.update(&mut cx, |this, _| {
3135                        this.commit_message_buffer = Some(buffer.clone());
3136                    })?;
3137                    Ok(buffer)
3138                }
3139            }
3140        });
3141
3142        cx.spawn(|_, _: &mut AsyncApp| async move { rx.await? })
3143    }
3144
3145    fn open_local_commit_buffer(
3146        language_registry: Option<Arc<LanguageRegistry>>,
3147        buffer_store: Entity<BufferStore>,
3148        cx: &mut Context<Self>,
3149    ) -> Task<Result<Entity<Buffer>>> {
3150        cx.spawn(async move |repository, cx| {
3151            let buffer = buffer_store
3152                .update(cx, |buffer_store, cx| buffer_store.create_buffer(cx))?
3153                .await?;
3154
3155            if let Some(language_registry) = language_registry {
3156                let git_commit_language = language_registry.language_for_name("Git Commit").await?;
3157                buffer.update(cx, |buffer, cx| {
3158                    buffer.set_language(Some(git_commit_language), cx);
3159                })?;
3160            }
3161
3162            repository.update(cx, |repository, _| {
3163                repository.commit_message_buffer = Some(buffer.clone());
3164            })?;
3165            Ok(buffer)
3166        })
3167    }
3168
3169    pub fn checkout_files(
3170        &mut self,
3171        commit: &str,
3172        paths: Vec<RepoPath>,
3173        _cx: &mut App,
3174    ) -> oneshot::Receiver<Result<()>> {
3175        let commit = commit.to_string();
3176        let id = self.id;
3177
3178        self.send_job(
3179            Some(format!("git checkout {}", commit).into()),
3180            move |git_repo, _| async move {
3181                match git_repo {
3182                    RepositoryState::Local {
3183                        backend,
3184                        environment,
3185                        ..
3186                    } => {
3187                        backend
3188                            .checkout_files(commit, paths, environment.clone())
3189                            .await
3190                    }
3191                    RepositoryState::Remote { project_id, client } => {
3192                        client
3193                            .request(proto::GitCheckoutFiles {
3194                                project_id: project_id.0,
3195                                repository_id: id.to_proto(),
3196                                commit,
3197                                paths: paths
3198                                    .into_iter()
3199                                    .map(|p| p.to_string_lossy().to_string())
3200                                    .collect(),
3201                            })
3202                            .await?;
3203
3204                        Ok(())
3205                    }
3206                }
3207            },
3208        )
3209    }
3210
3211    pub fn reset(
3212        &mut self,
3213        commit: String,
3214        reset_mode: ResetMode,
3215        _cx: &mut App,
3216    ) -> oneshot::Receiver<Result<()>> {
3217        let commit = commit.to_string();
3218        let id = self.id;
3219
3220        self.send_job(None, move |git_repo, _| async move {
3221            match git_repo {
3222                RepositoryState::Local {
3223                    backend,
3224                    environment,
3225                    ..
3226                } => backend.reset(commit, reset_mode, environment).await,
3227                RepositoryState::Remote { project_id, client } => {
3228                    client
3229                        .request(proto::GitReset {
3230                            project_id: project_id.0,
3231                            repository_id: id.to_proto(),
3232                            commit,
3233                            mode: match reset_mode {
3234                                ResetMode::Soft => git_reset::ResetMode::Soft.into(),
3235                                ResetMode::Mixed => git_reset::ResetMode::Mixed.into(),
3236                            },
3237                        })
3238                        .await?;
3239
3240                    Ok(())
3241                }
3242            }
3243        })
3244    }
3245
3246    pub fn show(&mut self, commit: String) -> oneshot::Receiver<Result<CommitDetails>> {
3247        let id = self.id;
3248        self.send_job(None, move |git_repo, _cx| async move {
3249            match git_repo {
3250                RepositoryState::Local { backend, .. } => backend.show(commit).await,
3251                RepositoryState::Remote { project_id, client } => {
3252                    let resp = client
3253                        .request(proto::GitShow {
3254                            project_id: project_id.0,
3255                            repository_id: id.to_proto(),
3256                            commit,
3257                        })
3258                        .await?;
3259
3260                    Ok(CommitDetails {
3261                        sha: resp.sha.into(),
3262                        message: resp.message.into(),
3263                        commit_timestamp: resp.commit_timestamp,
3264                        author_email: resp.author_email.into(),
3265                        author_name: resp.author_name.into(),
3266                    })
3267                }
3268            }
3269        })
3270    }
3271
3272    pub fn load_commit_diff(&mut self, commit: String) -> oneshot::Receiver<Result<CommitDiff>> {
3273        let id = self.id;
3274        self.send_job(None, move |git_repo, cx| async move {
3275            match git_repo {
3276                RepositoryState::Local { backend, .. } => backend.load_commit(commit, cx).await,
3277                RepositoryState::Remote {
3278                    client, project_id, ..
3279                } => {
3280                    let response = client
3281                        .request(proto::LoadCommitDiff {
3282                            project_id: project_id.0,
3283                            repository_id: id.to_proto(),
3284                            commit,
3285                        })
3286                        .await?;
3287                    Ok(CommitDiff {
3288                        files: response
3289                            .files
3290                            .into_iter()
3291                            .map(|file| CommitFile {
3292                                path: Path::new(&file.path).into(),
3293                                old_text: file.old_text,
3294                                new_text: file.new_text,
3295                            })
3296                            .collect(),
3297                    })
3298                }
3299            }
3300        })
3301    }
3302
3303    fn buffer_store(&self, cx: &App) -> Option<Entity<BufferStore>> {
3304        Some(self.git_store.upgrade()?.read(cx).buffer_store.clone())
3305    }
3306
3307    pub fn stage_entries(
3308        &self,
3309        entries: Vec<RepoPath>,
3310        cx: &mut Context<Self>,
3311    ) -> Task<anyhow::Result<()>> {
3312        if entries.is_empty() {
3313            return Task::ready(Ok(()));
3314        }
3315        let id = self.id;
3316
3317        let mut save_futures = Vec::new();
3318        if let Some(buffer_store) = self.buffer_store(cx) {
3319            buffer_store.update(cx, |buffer_store, cx| {
3320                for path in &entries {
3321                    let Some(project_path) = self.repo_path_to_project_path(path, cx) else {
3322                        continue;
3323                    };
3324                    if let Some(buffer) = buffer_store.get_by_path(&project_path, cx) {
3325                        if buffer
3326                            .read(cx)
3327                            .file()
3328                            .map_or(false, |file| file.disk_state().exists())
3329                        {
3330                            save_futures.push(buffer_store.save_buffer(buffer, cx));
3331                        }
3332                    }
3333                }
3334            })
3335        }
3336
3337        cx.spawn(async move |this, cx| {
3338            for save_future in save_futures {
3339                save_future.await?;
3340            }
3341
3342            this.update(cx, |this, _| {
3343                this.send_job(None, move |git_repo, _cx| async move {
3344                    match git_repo {
3345                        RepositoryState::Local {
3346                            backend,
3347                            environment,
3348                            ..
3349                        } => backend.stage_paths(entries, environment.clone()).await,
3350                        RepositoryState::Remote { project_id, client } => {
3351                            client
3352                                .request(proto::Stage {
3353                                    project_id: project_id.0,
3354                                    repository_id: id.to_proto(),
3355                                    paths: entries
3356                                        .into_iter()
3357                                        .map(|repo_path| repo_path.as_ref().to_proto())
3358                                        .collect(),
3359                                })
3360                                .await
3361                                .context("sending stage request")?;
3362
3363                            Ok(())
3364                        }
3365                    }
3366                })
3367            })?
3368            .await??;
3369
3370            Ok(())
3371        })
3372    }
3373
3374    pub fn unstage_entries(
3375        &self,
3376        entries: Vec<RepoPath>,
3377        cx: &mut Context<Self>,
3378    ) -> Task<anyhow::Result<()>> {
3379        if entries.is_empty() {
3380            return Task::ready(Ok(()));
3381        }
3382        let id = self.id;
3383
3384        let mut save_futures = Vec::new();
3385        if let Some(buffer_store) = self.buffer_store(cx) {
3386            buffer_store.update(cx, |buffer_store, cx| {
3387                for path in &entries {
3388                    let Some(project_path) = self.repo_path_to_project_path(path, cx) else {
3389                        continue;
3390                    };
3391                    if let Some(buffer) = buffer_store.get_by_path(&project_path, cx) {
3392                        if buffer
3393                            .read(cx)
3394                            .file()
3395                            .map_or(false, |file| file.disk_state().exists())
3396                        {
3397                            save_futures.push(buffer_store.save_buffer(buffer, cx));
3398                        }
3399                    }
3400                }
3401            })
3402        }
3403
3404        cx.spawn(async move |this, cx| {
3405            for save_future in save_futures {
3406                save_future.await?;
3407            }
3408
3409            this.update(cx, |this, _| {
3410                this.send_job(None, move |git_repo, _cx| async move {
3411                    match git_repo {
3412                        RepositoryState::Local {
3413                            backend,
3414                            environment,
3415                            ..
3416                        } => backend.unstage_paths(entries, environment).await,
3417                        RepositoryState::Remote { project_id, client } => {
3418                            client
3419                                .request(proto::Unstage {
3420                                    project_id: project_id.0,
3421                                    repository_id: id.to_proto(),
3422                                    paths: entries
3423                                        .into_iter()
3424                                        .map(|repo_path| repo_path.as_ref().to_proto())
3425                                        .collect(),
3426                                })
3427                                .await
3428                                .context("sending unstage request")?;
3429
3430                            Ok(())
3431                        }
3432                    }
3433                })
3434            })?
3435            .await??;
3436
3437            Ok(())
3438        })
3439    }
3440
3441    pub fn stage_all(&self, cx: &mut Context<Self>) -> Task<anyhow::Result<()>> {
3442        let to_stage = self
3443            .cached_status()
3444            .filter(|entry| !entry.status.staging().is_fully_staged())
3445            .map(|entry| entry.repo_path.clone())
3446            .collect();
3447        self.stage_entries(to_stage, cx)
3448    }
3449
3450    pub fn unstage_all(&self, cx: &mut Context<Self>) -> Task<anyhow::Result<()>> {
3451        let to_unstage = self
3452            .cached_status()
3453            .filter(|entry| entry.status.staging().has_staged())
3454            .map(|entry| entry.repo_path.clone())
3455            .collect();
3456        self.unstage_entries(to_unstage, cx)
3457    }
3458
3459    pub fn commit(
3460        &mut self,
3461        message: SharedString,
3462        name_and_email: Option<(SharedString, SharedString)>,
3463        options: CommitOptions,
3464        _cx: &mut App,
3465    ) -> oneshot::Receiver<Result<()>> {
3466        let id = self.id;
3467
3468        self.send_job(Some("git commit".into()), move |git_repo, _cx| async move {
3469            match git_repo {
3470                RepositoryState::Local {
3471                    backend,
3472                    environment,
3473                    ..
3474                } => {
3475                    backend
3476                        .commit(message, name_and_email, options, environment)
3477                        .await
3478                }
3479                RepositoryState::Remote { project_id, client } => {
3480                    let (name, email) = name_and_email.unzip();
3481                    client
3482                        .request(proto::Commit {
3483                            project_id: project_id.0,
3484                            repository_id: id.to_proto(),
3485                            message: String::from(message),
3486                            name: name.map(String::from),
3487                            email: email.map(String::from),
3488                            options: Some(proto::commit::CommitOptions {
3489                                amend: options.amend,
3490                            }),
3491                        })
3492                        .await
3493                        .context("sending commit request")?;
3494
3495                    Ok(())
3496                }
3497            }
3498        })
3499    }
3500
3501    pub fn fetch(
3502        &mut self,
3503        askpass: AskPassDelegate,
3504        _cx: &mut App,
3505    ) -> oneshot::Receiver<Result<RemoteCommandOutput>> {
3506        let askpass_delegates = self.askpass_delegates.clone();
3507        let askpass_id = util::post_inc(&mut self.latest_askpass_id);
3508        let id = self.id;
3509
3510        self.send_job(Some("git fetch".into()), move |git_repo, cx| async move {
3511            match git_repo {
3512                RepositoryState::Local {
3513                    backend,
3514                    environment,
3515                    ..
3516                } => backend.fetch(askpass, environment, cx).await,
3517                RepositoryState::Remote { project_id, client } => {
3518                    askpass_delegates.lock().insert(askpass_id, askpass);
3519                    let _defer = util::defer(|| {
3520                        let askpass_delegate = askpass_delegates.lock().remove(&askpass_id);
3521                        debug_assert!(askpass_delegate.is_some());
3522                    });
3523
3524                    let response = client
3525                        .request(proto::Fetch {
3526                            project_id: project_id.0,
3527                            repository_id: id.to_proto(),
3528                            askpass_id,
3529                        })
3530                        .await
3531                        .context("sending fetch request")?;
3532
3533                    Ok(RemoteCommandOutput {
3534                        stdout: response.stdout,
3535                        stderr: response.stderr,
3536                    })
3537                }
3538            }
3539        })
3540    }
3541
3542    pub fn push(
3543        &mut self,
3544        branch: SharedString,
3545        remote: SharedString,
3546        options: Option<PushOptions>,
3547        askpass: AskPassDelegate,
3548        cx: &mut Context<Self>,
3549    ) -> oneshot::Receiver<Result<RemoteCommandOutput>> {
3550        let askpass_delegates = self.askpass_delegates.clone();
3551        let askpass_id = util::post_inc(&mut self.latest_askpass_id);
3552        let id = self.id;
3553
3554        let args = options
3555            .map(|option| match option {
3556                PushOptions::SetUpstream => " --set-upstream",
3557                PushOptions::Force => " --force-with-lease",
3558            })
3559            .unwrap_or("");
3560
3561        let updates_tx = self
3562            .git_store()
3563            .and_then(|git_store| match &git_store.read(cx).state {
3564                GitStoreState::Local { downstream, .. } => downstream
3565                    .as_ref()
3566                    .map(|downstream| downstream.updates_tx.clone()),
3567                _ => None,
3568            });
3569
3570        let this = cx.weak_entity();
3571        self.send_job(
3572            Some(format!("git push {} {} {}", args, branch, remote).into()),
3573            move |git_repo, mut cx| async move {
3574                match git_repo {
3575                    RepositoryState::Local {
3576                        backend,
3577                        environment,
3578                        ..
3579                    } => {
3580                        let result = backend
3581                            .push(
3582                                branch.to_string(),
3583                                remote.to_string(),
3584                                options,
3585                                askpass,
3586                                environment.clone(),
3587                                cx.clone(),
3588                            )
3589                            .await;
3590                        if result.is_ok() {
3591                            let branches = backend.branches().await?;
3592                            let branch = branches.into_iter().find(|branch| branch.is_head);
3593                            log::info!("head branch after scan is {branch:?}");
3594                            let snapshot = this.update(&mut cx, |this, cx| {
3595                                this.snapshot.branch = branch;
3596                                let snapshot = this.snapshot.clone();
3597                                cx.emit(RepositoryEvent::Updated { full_scan: false });
3598                                snapshot
3599                            })?;
3600                            if let Some(updates_tx) = updates_tx {
3601                                updates_tx
3602                                    .unbounded_send(DownstreamUpdate::UpdateRepository(snapshot))
3603                                    .ok();
3604                            }
3605                        }
3606                        result
3607                    }
3608                    RepositoryState::Remote { project_id, client } => {
3609                        askpass_delegates.lock().insert(askpass_id, askpass);
3610                        let _defer = util::defer(|| {
3611                            let askpass_delegate = askpass_delegates.lock().remove(&askpass_id);
3612                            debug_assert!(askpass_delegate.is_some());
3613                        });
3614                        let response = client
3615                            .request(proto::Push {
3616                                project_id: project_id.0,
3617                                repository_id: id.to_proto(),
3618                                askpass_id,
3619                                branch_name: branch.to_string(),
3620                                remote_name: remote.to_string(),
3621                                options: options.map(|options| match options {
3622                                    PushOptions::Force => proto::push::PushOptions::Force,
3623                                    PushOptions::SetUpstream => {
3624                                        proto::push::PushOptions::SetUpstream
3625                                    }
3626                                }
3627                                    as i32),
3628                            })
3629                            .await
3630                            .context("sending push request")?;
3631
3632                        Ok(RemoteCommandOutput {
3633                            stdout: response.stdout,
3634                            stderr: response.stderr,
3635                        })
3636                    }
3637                }
3638            },
3639        )
3640    }
3641
3642    pub fn pull(
3643        &mut self,
3644        branch: SharedString,
3645        remote: SharedString,
3646        askpass: AskPassDelegate,
3647        _cx: &mut App,
3648    ) -> oneshot::Receiver<Result<RemoteCommandOutput>> {
3649        let askpass_delegates = self.askpass_delegates.clone();
3650        let askpass_id = util::post_inc(&mut self.latest_askpass_id);
3651        let id = self.id;
3652
3653        self.send_job(
3654            Some(format!("git pull {} {}", remote, branch).into()),
3655            move |git_repo, cx| async move {
3656                match git_repo {
3657                    RepositoryState::Local {
3658                        backend,
3659                        environment,
3660                        ..
3661                    } => {
3662                        backend
3663                            .pull(
3664                                branch.to_string(),
3665                                remote.to_string(),
3666                                askpass,
3667                                environment.clone(),
3668                                cx,
3669                            )
3670                            .await
3671                    }
3672                    RepositoryState::Remote { project_id, client } => {
3673                        askpass_delegates.lock().insert(askpass_id, askpass);
3674                        let _defer = util::defer(|| {
3675                            let askpass_delegate = askpass_delegates.lock().remove(&askpass_id);
3676                            debug_assert!(askpass_delegate.is_some());
3677                        });
3678                        let response = client
3679                            .request(proto::Pull {
3680                                project_id: project_id.0,
3681                                repository_id: id.to_proto(),
3682                                askpass_id,
3683                                branch_name: branch.to_string(),
3684                                remote_name: remote.to_string(),
3685                            })
3686                            .await
3687                            .context("sending pull request")?;
3688
3689                        Ok(RemoteCommandOutput {
3690                            stdout: response.stdout,
3691                            stderr: response.stderr,
3692                        })
3693                    }
3694                }
3695            },
3696        )
3697    }
3698
3699    fn spawn_set_index_text_job(
3700        &mut self,
3701        path: RepoPath,
3702        content: Option<String>,
3703        hunk_staging_operation_count: Option<usize>,
3704        cx: &mut Context<Self>,
3705    ) -> oneshot::Receiver<anyhow::Result<()>> {
3706        let id = self.id;
3707        let this = cx.weak_entity();
3708        let git_store = self.git_store.clone();
3709        self.send_keyed_job(
3710            Some(GitJobKey::WriteIndex(path.clone())),
3711            None,
3712            move |git_repo, mut cx| async move {
3713                log::debug!("start updating index text for buffer {}", path.display());
3714                match git_repo {
3715                    RepositoryState::Local {
3716                        backend,
3717                        environment,
3718                        ..
3719                    } => {
3720                        backend
3721                            .set_index_text(path.clone(), content, environment.clone())
3722                            .await?;
3723                    }
3724                    RepositoryState::Remote { project_id, client } => {
3725                        client
3726                            .request(proto::SetIndexText {
3727                                project_id: project_id.0,
3728                                repository_id: id.to_proto(),
3729                                path: path.as_ref().to_proto(),
3730                                text: content,
3731                            })
3732                            .await?;
3733                    }
3734                }
3735                log::debug!("finish updating index text for buffer {}", path.display());
3736
3737                if let Some(hunk_staging_operation_count) = hunk_staging_operation_count {
3738                    let project_path = this
3739                        .read_with(&cx, |this, cx| this.repo_path_to_project_path(&path, cx))
3740                        .ok()
3741                        .flatten();
3742                    git_store.update(&mut cx, |git_store, cx| {
3743                        let buffer_id = git_store
3744                            .buffer_store
3745                            .read(cx)
3746                            .get_by_path(&project_path?, cx)?
3747                            .read(cx)
3748                            .remote_id();
3749                        let diff_state = git_store.diffs.get(&buffer_id)?;
3750                        diff_state.update(cx, |diff_state, _| {
3751                            diff_state.hunk_staging_operation_count_as_of_write =
3752                                hunk_staging_operation_count;
3753                        });
3754                        Some(())
3755                    })?;
3756                }
3757                Ok(())
3758            },
3759        )
3760    }
3761
3762    pub fn get_remotes(
3763        &mut self,
3764        branch_name: Option<String>,
3765    ) -> oneshot::Receiver<Result<Vec<Remote>>> {
3766        let id = self.id;
3767        self.send_job(None, move |repo, _cx| async move {
3768            match repo {
3769                RepositoryState::Local { backend, .. } => backend.get_remotes(branch_name).await,
3770                RepositoryState::Remote { project_id, client } => {
3771                    let response = client
3772                        .request(proto::GetRemotes {
3773                            project_id: project_id.0,
3774                            repository_id: id.to_proto(),
3775                            branch_name,
3776                        })
3777                        .await?;
3778
3779                    let remotes = response
3780                        .remotes
3781                        .into_iter()
3782                        .map(|remotes| git::repository::Remote {
3783                            name: remotes.name.into(),
3784                        })
3785                        .collect();
3786
3787                    Ok(remotes)
3788                }
3789            }
3790        })
3791    }
3792
3793    pub fn branches(&mut self) -> oneshot::Receiver<Result<Vec<Branch>>> {
3794        let id = self.id;
3795        self.send_job(None, move |repo, _| async move {
3796            match repo {
3797                RepositoryState::Local { backend, .. } => backend.branches().await,
3798                RepositoryState::Remote { project_id, client } => {
3799                    let response = client
3800                        .request(proto::GitGetBranches {
3801                            project_id: project_id.0,
3802                            repository_id: id.to_proto(),
3803                        })
3804                        .await?;
3805
3806                    let branches = response
3807                        .branches
3808                        .into_iter()
3809                        .map(|branch| proto_to_branch(&branch))
3810                        .collect();
3811
3812                    Ok(branches)
3813                }
3814            }
3815        })
3816    }
3817
3818    pub fn diff(&mut self, diff_type: DiffType, _cx: &App) -> oneshot::Receiver<Result<String>> {
3819        let id = self.id;
3820        self.send_job(None, move |repo, _cx| async move {
3821            match repo {
3822                RepositoryState::Local { backend, .. } => backend.diff(diff_type).await,
3823                RepositoryState::Remote { project_id, client } => {
3824                    let response = client
3825                        .request(proto::GitDiff {
3826                            project_id: project_id.0,
3827                            repository_id: id.to_proto(),
3828                            diff_type: match diff_type {
3829                                DiffType::HeadToIndex => {
3830                                    proto::git_diff::DiffType::HeadToIndex.into()
3831                                }
3832                                DiffType::HeadToWorktree => {
3833                                    proto::git_diff::DiffType::HeadToWorktree.into()
3834                                }
3835                            },
3836                        })
3837                        .await?;
3838
3839                    Ok(response.diff)
3840                }
3841            }
3842        })
3843    }
3844
3845    pub fn create_branch(&mut self, branch_name: String) -> oneshot::Receiver<Result<()>> {
3846        let id = self.id;
3847        self.send_job(
3848            Some(format!("git switch -c {branch_name}").into()),
3849            move |repo, _cx| async move {
3850                match repo {
3851                    RepositoryState::Local { backend, .. } => {
3852                        backend.create_branch(branch_name).await
3853                    }
3854                    RepositoryState::Remote { project_id, client } => {
3855                        client
3856                            .request(proto::GitCreateBranch {
3857                                project_id: project_id.0,
3858                                repository_id: id.to_proto(),
3859                                branch_name,
3860                            })
3861                            .await?;
3862
3863                        Ok(())
3864                    }
3865                }
3866            },
3867        )
3868    }
3869
3870    pub fn change_branch(&mut self, branch_name: String) -> oneshot::Receiver<Result<()>> {
3871        let id = self.id;
3872        self.send_job(
3873            Some(format!("git switch {branch_name}").into()),
3874            move |repo, _cx| async move {
3875                match repo {
3876                    RepositoryState::Local { backend, .. } => {
3877                        backend.change_branch(branch_name).await
3878                    }
3879                    RepositoryState::Remote { project_id, client } => {
3880                        client
3881                            .request(proto::GitChangeBranch {
3882                                project_id: project_id.0,
3883                                repository_id: id.to_proto(),
3884                                branch_name,
3885                            })
3886                            .await?;
3887
3888                        Ok(())
3889                    }
3890                }
3891            },
3892        )
3893    }
3894
3895    pub fn check_for_pushed_commits(&mut self) -> oneshot::Receiver<Result<Vec<SharedString>>> {
3896        let id = self.id;
3897        self.send_job(None, move |repo, _cx| async move {
3898            match repo {
3899                RepositoryState::Local { backend, .. } => backend.check_for_pushed_commit().await,
3900                RepositoryState::Remote { project_id, client } => {
3901                    let response = client
3902                        .request(proto::CheckForPushedCommits {
3903                            project_id: project_id.0,
3904                            repository_id: id.to_proto(),
3905                        })
3906                        .await?;
3907
3908                    let branches = response.pushed_to.into_iter().map(Into::into).collect();
3909
3910                    Ok(branches)
3911                }
3912            }
3913        })
3914    }
3915
3916    pub fn checkpoint(&mut self) -> oneshot::Receiver<Result<GitRepositoryCheckpoint>> {
3917        self.send_job(None, |repo, _cx| async move {
3918            match repo {
3919                RepositoryState::Local { backend, .. } => backend.checkpoint().await,
3920                RepositoryState::Remote { .. } => anyhow::bail!("not implemented yet"),
3921            }
3922        })
3923    }
3924
3925    pub fn restore_checkpoint(
3926        &mut self,
3927        checkpoint: GitRepositoryCheckpoint,
3928    ) -> oneshot::Receiver<Result<()>> {
3929        self.send_job(None, move |repo, _cx| async move {
3930            match repo {
3931                RepositoryState::Local { backend, .. } => {
3932                    backend.restore_checkpoint(checkpoint).await
3933                }
3934                RepositoryState::Remote { .. } => anyhow::bail!("not implemented yet"),
3935            }
3936        })
3937    }
3938
3939    pub(crate) fn apply_remote_update(
3940        &mut self,
3941        update: proto::UpdateRepository,
3942        cx: &mut Context<Self>,
3943    ) -> Result<()> {
3944        let conflicted_paths = TreeSet::from_ordered_entries(
3945            update
3946                .current_merge_conflicts
3947                .into_iter()
3948                .map(|path| RepoPath(Path::new(&path).into())),
3949        );
3950        self.snapshot.branch = update.branch_summary.as_ref().map(proto_to_branch);
3951        self.snapshot.head_commit = update
3952            .head_commit_details
3953            .as_ref()
3954            .map(proto_to_commit_details);
3955
3956        self.snapshot.merge.conflicted_paths = conflicted_paths;
3957
3958        let edits = update
3959            .removed_statuses
3960            .into_iter()
3961            .map(|path| sum_tree::Edit::Remove(PathKey(FromProto::from_proto(path))))
3962            .chain(
3963                update
3964                    .updated_statuses
3965                    .into_iter()
3966                    .filter_map(|updated_status| {
3967                        Some(sum_tree::Edit::Insert(updated_status.try_into().log_err()?))
3968                    }),
3969            )
3970            .collect::<Vec<_>>();
3971        self.snapshot.statuses_by_path.edit(edits, &());
3972        if update.is_last_update {
3973            self.snapshot.scan_id = update.scan_id;
3974        }
3975        cx.emit(RepositoryEvent::Updated { full_scan: true });
3976        Ok(())
3977    }
3978
3979    pub fn compare_checkpoints(
3980        &mut self,
3981        left: GitRepositoryCheckpoint,
3982        right: GitRepositoryCheckpoint,
3983    ) -> oneshot::Receiver<Result<bool>> {
3984        self.send_job(None, move |repo, _cx| async move {
3985            match repo {
3986                RepositoryState::Local { backend, .. } => {
3987                    backend.compare_checkpoints(left, right).await
3988                }
3989                RepositoryState::Remote { .. } => anyhow::bail!("not implemented yet"),
3990            }
3991        })
3992    }
3993
3994    pub fn diff_checkpoints(
3995        &mut self,
3996        base_checkpoint: GitRepositoryCheckpoint,
3997        target_checkpoint: GitRepositoryCheckpoint,
3998    ) -> oneshot::Receiver<Result<String>> {
3999        self.send_job(None, move |repo, _cx| async move {
4000            match repo {
4001                RepositoryState::Local { backend, .. } => {
4002                    backend
4003                        .diff_checkpoints(base_checkpoint, target_checkpoint)
4004                        .await
4005                }
4006                RepositoryState::Remote { .. } => anyhow::bail!("not implemented yet"),
4007            }
4008        })
4009    }
4010
4011    fn schedule_scan(
4012        &mut self,
4013        updates_tx: Option<mpsc::UnboundedSender<DownstreamUpdate>>,
4014        cx: &mut Context<Self>,
4015    ) {
4016        let this = cx.weak_entity();
4017        let _ = self.send_keyed_job(
4018            Some(GitJobKey::ReloadGitState),
4019            None,
4020            |state, mut cx| async move {
4021                log::debug!("run scheduled git status scan");
4022
4023                let Some(this) = this.upgrade() else {
4024                    return Ok(());
4025                };
4026                let RepositoryState::Local { backend, .. } = state else {
4027                    bail!("not a local repository")
4028                };
4029                let (snapshot, events) = this
4030                    .read_with(&mut cx, |this, _| {
4031                        compute_snapshot(
4032                            this.id,
4033                            this.work_directory_abs_path.clone(),
4034                            this.snapshot.clone(),
4035                            backend.clone(),
4036                        )
4037                    })?
4038                    .await?;
4039                this.update(&mut cx, |this, cx| {
4040                    this.snapshot = snapshot.clone();
4041                    for event in events {
4042                        cx.emit(event);
4043                    }
4044                })?;
4045                if let Some(updates_tx) = updates_tx {
4046                    updates_tx
4047                        .unbounded_send(DownstreamUpdate::UpdateRepository(snapshot))
4048                        .ok();
4049                }
4050                Ok(())
4051            },
4052        );
4053    }
4054
4055    fn spawn_local_git_worker(
4056        work_directory_abs_path: Arc<Path>,
4057        dot_git_abs_path: Arc<Path>,
4058        _repository_dir_abs_path: Arc<Path>,
4059        _common_dir_abs_path: Arc<Path>,
4060        project_environment: WeakEntity<ProjectEnvironment>,
4061        fs: Arc<dyn Fs>,
4062        cx: &mut Context<Self>,
4063    ) -> mpsc::UnboundedSender<GitJob> {
4064        let (job_tx, mut job_rx) = mpsc::unbounded::<GitJob>();
4065
4066        cx.spawn(async move |_, cx| {
4067            let environment = project_environment
4068                .upgrade()
4069                .context("missing project environment")?
4070                .update(cx, |project_environment, cx| {
4071                    project_environment.get_directory_environment(work_directory_abs_path.clone(), cx)
4072                })?
4073                .await
4074                .unwrap_or_else(|| {
4075                    log::error!("failed to get working directory environment for repository {work_directory_abs_path:?}");
4076                    HashMap::default()
4077                });
4078            let backend = cx
4079                .background_spawn(async move {
4080                    fs.open_repo(&dot_git_abs_path)
4081                        .with_context(|| format!("opening repository at {dot_git_abs_path:?}"))
4082                })
4083                .await?;
4084
4085            if let Some(git_hosting_provider_registry) =
4086                cx.update(|cx| GitHostingProviderRegistry::try_global(cx))?
4087            {
4088                git_hosting_providers::register_additional_providers(
4089                    git_hosting_provider_registry,
4090                    backend.clone(),
4091                );
4092            }
4093
4094            let state = RepositoryState::Local {
4095                backend,
4096                environment: Arc::new(environment),
4097            };
4098            let mut jobs = VecDeque::new();
4099            loop {
4100                while let Ok(Some(next_job)) = job_rx.try_next() {
4101                    jobs.push_back(next_job);
4102                }
4103
4104                if let Some(job) = jobs.pop_front() {
4105                    if let Some(current_key) = &job.key {
4106                        if jobs
4107                            .iter()
4108                            .any(|other_job| other_job.key.as_ref() == Some(current_key))
4109                        {
4110                            continue;
4111                        }
4112                    }
4113                    (job.job)(state.clone(), cx).await;
4114                } else if let Some(job) = job_rx.next().await {
4115                    jobs.push_back(job);
4116                } else {
4117                    break;
4118                }
4119            }
4120            anyhow::Ok(())
4121        })
4122        .detach_and_log_err(cx);
4123
4124        job_tx
4125    }
4126
4127    fn spawn_remote_git_worker(
4128        project_id: ProjectId,
4129        client: AnyProtoClient,
4130        cx: &mut Context<Self>,
4131    ) -> mpsc::UnboundedSender<GitJob> {
4132        let (job_tx, mut job_rx) = mpsc::unbounded::<GitJob>();
4133
4134        cx.spawn(async move |_, cx| {
4135            let state = RepositoryState::Remote { project_id, client };
4136            let mut jobs = VecDeque::new();
4137            loop {
4138                while let Ok(Some(next_job)) = job_rx.try_next() {
4139                    jobs.push_back(next_job);
4140                }
4141
4142                if let Some(job) = jobs.pop_front() {
4143                    if let Some(current_key) = &job.key {
4144                        if jobs
4145                            .iter()
4146                            .any(|other_job| other_job.key.as_ref() == Some(current_key))
4147                        {
4148                            continue;
4149                        }
4150                    }
4151                    (job.job)(state.clone(), cx).await;
4152                } else if let Some(job) = job_rx.next().await {
4153                    jobs.push_back(job);
4154                } else {
4155                    break;
4156                }
4157            }
4158            anyhow::Ok(())
4159        })
4160        .detach_and_log_err(cx);
4161
4162        job_tx
4163    }
4164
4165    fn load_staged_text(
4166        &mut self,
4167        buffer_id: BufferId,
4168        repo_path: RepoPath,
4169        cx: &App,
4170    ) -> Task<Result<Option<String>>> {
4171        let rx = self.send_job(None, move |state, _| async move {
4172            match state {
4173                RepositoryState::Local { backend, .. } => {
4174                    anyhow::Ok(backend.load_index_text(repo_path).await)
4175                }
4176                RepositoryState::Remote { project_id, client } => {
4177                    let response = client
4178                        .request(proto::OpenUnstagedDiff {
4179                            project_id: project_id.to_proto(),
4180                            buffer_id: buffer_id.to_proto(),
4181                        })
4182                        .await?;
4183                    Ok(response.staged_text)
4184                }
4185            }
4186        });
4187        cx.spawn(|_: &mut AsyncApp| async move { rx.await? })
4188    }
4189
4190    fn load_committed_text(
4191        &mut self,
4192        buffer_id: BufferId,
4193        repo_path: RepoPath,
4194        cx: &App,
4195    ) -> Task<Result<DiffBasesChange>> {
4196        let rx = self.send_job(None, move |state, _| async move {
4197            match state {
4198                RepositoryState::Local { backend, .. } => {
4199                    let committed_text = backend.load_committed_text(repo_path.clone()).await;
4200                    let staged_text = backend.load_index_text(repo_path).await;
4201                    let diff_bases_change = if committed_text == staged_text {
4202                        DiffBasesChange::SetBoth(committed_text)
4203                    } else {
4204                        DiffBasesChange::SetEach {
4205                            index: staged_text,
4206                            head: committed_text,
4207                        }
4208                    };
4209                    anyhow::Ok(diff_bases_change)
4210                }
4211                RepositoryState::Remote { project_id, client } => {
4212                    use proto::open_uncommitted_diff_response::Mode;
4213
4214                    let response = client
4215                        .request(proto::OpenUncommittedDiff {
4216                            project_id: project_id.to_proto(),
4217                            buffer_id: buffer_id.to_proto(),
4218                        })
4219                        .await?;
4220                    let mode = Mode::from_i32(response.mode).context("Invalid mode")?;
4221                    let bases = match mode {
4222                        Mode::IndexMatchesHead => DiffBasesChange::SetBoth(response.committed_text),
4223                        Mode::IndexAndHead => DiffBasesChange::SetEach {
4224                            head: response.committed_text,
4225                            index: response.staged_text,
4226                        },
4227                    };
4228                    Ok(bases)
4229                }
4230            }
4231        });
4232
4233        cx.spawn(|_: &mut AsyncApp| async move { rx.await? })
4234    }
4235
4236    fn paths_changed(
4237        &mut self,
4238        paths: Vec<RepoPath>,
4239        updates_tx: Option<mpsc::UnboundedSender<DownstreamUpdate>>,
4240        cx: &mut Context<Self>,
4241    ) {
4242        self.paths_needing_status_update.extend(paths);
4243
4244        let this = cx.weak_entity();
4245        let _ = self.send_keyed_job(
4246            Some(GitJobKey::RefreshStatuses),
4247            None,
4248            |state, mut cx| async move {
4249                let (prev_snapshot, mut changed_paths) = this.update(&mut cx, |this, _| {
4250                    (
4251                        this.snapshot.clone(),
4252                        mem::take(&mut this.paths_needing_status_update),
4253                    )
4254                })?;
4255                let RepositoryState::Local { backend, .. } = state else {
4256                    bail!("not a local repository")
4257                };
4258
4259                let paths = changed_paths.iter().cloned().collect::<Vec<_>>();
4260                let statuses = backend.status(&paths).await?;
4261
4262                let changed_path_statuses = cx
4263                    .background_spawn(async move {
4264                        let mut changed_path_statuses = Vec::new();
4265                        let prev_statuses = prev_snapshot.statuses_by_path.clone();
4266                        let mut cursor = prev_statuses.cursor::<PathProgress>(&());
4267
4268                        for (repo_path, status) in &*statuses.entries {
4269                            changed_paths.remove(repo_path);
4270                            if cursor.seek_forward(&PathTarget::Path(repo_path), Bias::Left, &()) {
4271                                if cursor.item().is_some_and(|entry| entry.status == *status) {
4272                                    continue;
4273                                }
4274                            }
4275
4276                            changed_path_statuses.push(Edit::Insert(StatusEntry {
4277                                repo_path: repo_path.clone(),
4278                                status: *status,
4279                            }));
4280                        }
4281                        let mut cursor = prev_statuses.cursor::<PathProgress>(&());
4282                        for path in changed_paths.into_iter() {
4283                            if cursor.seek_forward(&PathTarget::Path(&path), Bias::Left, &()) {
4284                                changed_path_statuses.push(Edit::Remove(PathKey(path.0)));
4285                            }
4286                        }
4287                        changed_path_statuses
4288                    })
4289                    .await;
4290
4291                this.update(&mut cx, |this, cx| {
4292                    if !changed_path_statuses.is_empty() {
4293                        this.snapshot
4294                            .statuses_by_path
4295                            .edit(changed_path_statuses, &());
4296                        this.snapshot.scan_id += 1;
4297                        if let Some(updates_tx) = updates_tx {
4298                            updates_tx
4299                                .unbounded_send(DownstreamUpdate::UpdateRepository(
4300                                    this.snapshot.clone(),
4301                                ))
4302                                .ok();
4303                        }
4304                    }
4305                    cx.emit(RepositoryEvent::Updated { full_scan: false });
4306                })
4307            },
4308        );
4309    }
4310
4311    /// currently running git command and when it started
4312    pub fn current_job(&self) -> Option<JobInfo> {
4313        self.active_jobs.values().next().cloned()
4314    }
4315
4316    pub fn barrier(&mut self) -> oneshot::Receiver<()> {
4317        self.send_job(None, |_, _| async {})
4318    }
4319}
4320
4321fn get_permalink_in_rust_registry_src(
4322    provider_registry: Arc<GitHostingProviderRegistry>,
4323    path: PathBuf,
4324    selection: Range<u32>,
4325) -> Result<url::Url> {
4326    #[derive(Deserialize)]
4327    struct CargoVcsGit {
4328        sha1: String,
4329    }
4330
4331    #[derive(Deserialize)]
4332    struct CargoVcsInfo {
4333        git: CargoVcsGit,
4334        path_in_vcs: String,
4335    }
4336
4337    #[derive(Deserialize)]
4338    struct CargoPackage {
4339        repository: String,
4340    }
4341
4342    #[derive(Deserialize)]
4343    struct CargoToml {
4344        package: CargoPackage,
4345    }
4346
4347    let Some((dir, cargo_vcs_info_json)) = path.ancestors().skip(1).find_map(|dir| {
4348        let json = std::fs::read_to_string(dir.join(".cargo_vcs_info.json")).ok()?;
4349        Some((dir, json))
4350    }) else {
4351        bail!("No .cargo_vcs_info.json found in parent directories")
4352    };
4353    let cargo_vcs_info = serde_json::from_str::<CargoVcsInfo>(&cargo_vcs_info_json)?;
4354    let cargo_toml = std::fs::read_to_string(dir.join("Cargo.toml"))?;
4355    let manifest = toml::from_str::<CargoToml>(&cargo_toml)?;
4356    let (provider, remote) = parse_git_remote_url(provider_registry, &manifest.package.repository)
4357        .context("parsing package.repository field of manifest")?;
4358    let path = PathBuf::from(cargo_vcs_info.path_in_vcs).join(path.strip_prefix(dir).unwrap());
4359    let permalink = provider.build_permalink(
4360        remote,
4361        BuildPermalinkParams {
4362            sha: &cargo_vcs_info.git.sha1,
4363            path: &path.to_string_lossy(),
4364            selection: Some(selection),
4365        },
4366    );
4367    Ok(permalink)
4368}
4369
4370fn serialize_blame_buffer_response(blame: Option<git::blame::Blame>) -> proto::BlameBufferResponse {
4371    let Some(blame) = blame else {
4372        return proto::BlameBufferResponse {
4373            blame_response: None,
4374        };
4375    };
4376
4377    let entries = blame
4378        .entries
4379        .into_iter()
4380        .map(|entry| proto::BlameEntry {
4381            sha: entry.sha.as_bytes().into(),
4382            start_line: entry.range.start,
4383            end_line: entry.range.end,
4384            original_line_number: entry.original_line_number,
4385            author: entry.author.clone(),
4386            author_mail: entry.author_mail.clone(),
4387            author_time: entry.author_time,
4388            author_tz: entry.author_tz.clone(),
4389            committer: entry.committer_name.clone(),
4390            committer_mail: entry.committer_email.clone(),
4391            committer_time: entry.committer_time,
4392            committer_tz: entry.committer_tz.clone(),
4393            summary: entry.summary.clone(),
4394            previous: entry.previous.clone(),
4395            filename: entry.filename.clone(),
4396        })
4397        .collect::<Vec<_>>();
4398
4399    let messages = blame
4400        .messages
4401        .into_iter()
4402        .map(|(oid, message)| proto::CommitMessage {
4403            oid: oid.as_bytes().into(),
4404            message,
4405        })
4406        .collect::<Vec<_>>();
4407
4408    proto::BlameBufferResponse {
4409        blame_response: Some(proto::blame_buffer_response::BlameResponse {
4410            entries,
4411            messages,
4412            remote_url: blame.remote_url,
4413        }),
4414    }
4415}
4416
4417fn deserialize_blame_buffer_response(
4418    response: proto::BlameBufferResponse,
4419) -> Option<git::blame::Blame> {
4420    let response = response.blame_response?;
4421    let entries = response
4422        .entries
4423        .into_iter()
4424        .filter_map(|entry| {
4425            Some(git::blame::BlameEntry {
4426                sha: git::Oid::from_bytes(&entry.sha).ok()?,
4427                range: entry.start_line..entry.end_line,
4428                original_line_number: entry.original_line_number,
4429                committer_name: entry.committer,
4430                committer_time: entry.committer_time,
4431                committer_tz: entry.committer_tz,
4432                committer_email: entry.committer_mail,
4433                author: entry.author,
4434                author_mail: entry.author_mail,
4435                author_time: entry.author_time,
4436                author_tz: entry.author_tz,
4437                summary: entry.summary,
4438                previous: entry.previous,
4439                filename: entry.filename,
4440            })
4441        })
4442        .collect::<Vec<_>>();
4443
4444    let messages = response
4445        .messages
4446        .into_iter()
4447        .filter_map(|message| Some((git::Oid::from_bytes(&message.oid).ok()?, message.message)))
4448        .collect::<HashMap<_, _>>();
4449
4450    Some(Blame {
4451        entries,
4452        messages,
4453        remote_url: response.remote_url,
4454    })
4455}
4456
4457fn branch_to_proto(branch: &git::repository::Branch) -> proto::Branch {
4458    proto::Branch {
4459        is_head: branch.is_head,
4460        ref_name: branch.ref_name.to_string(),
4461        unix_timestamp: branch
4462            .most_recent_commit
4463            .as_ref()
4464            .map(|commit| commit.commit_timestamp as u64),
4465        upstream: branch.upstream.as_ref().map(|upstream| proto::GitUpstream {
4466            ref_name: upstream.ref_name.to_string(),
4467            tracking: upstream
4468                .tracking
4469                .status()
4470                .map(|upstream| proto::UpstreamTracking {
4471                    ahead: upstream.ahead as u64,
4472                    behind: upstream.behind as u64,
4473                }),
4474        }),
4475        most_recent_commit: branch
4476            .most_recent_commit
4477            .as_ref()
4478            .map(|commit| proto::CommitSummary {
4479                sha: commit.sha.to_string(),
4480                subject: commit.subject.to_string(),
4481                commit_timestamp: commit.commit_timestamp,
4482            }),
4483    }
4484}
4485
4486fn proto_to_branch(proto: &proto::Branch) -> git::repository::Branch {
4487    git::repository::Branch {
4488        is_head: proto.is_head,
4489        ref_name: proto.ref_name.clone().into(),
4490        upstream: proto
4491            .upstream
4492            .as_ref()
4493            .map(|upstream| git::repository::Upstream {
4494                ref_name: upstream.ref_name.to_string().into(),
4495                tracking: upstream
4496                    .tracking
4497                    .as_ref()
4498                    .map(|tracking| {
4499                        git::repository::UpstreamTracking::Tracked(UpstreamTrackingStatus {
4500                            ahead: tracking.ahead as u32,
4501                            behind: tracking.behind as u32,
4502                        })
4503                    })
4504                    .unwrap_or(git::repository::UpstreamTracking::Gone),
4505            }),
4506        most_recent_commit: proto.most_recent_commit.as_ref().map(|commit| {
4507            git::repository::CommitSummary {
4508                sha: commit.sha.to_string().into(),
4509                subject: commit.subject.to_string().into(),
4510                commit_timestamp: commit.commit_timestamp,
4511                has_parent: true,
4512            }
4513        }),
4514    }
4515}
4516
4517fn commit_details_to_proto(commit: &CommitDetails) -> proto::GitCommitDetails {
4518    proto::GitCommitDetails {
4519        sha: commit.sha.to_string(),
4520        message: commit.message.to_string(),
4521        commit_timestamp: commit.commit_timestamp,
4522        author_email: commit.author_email.to_string(),
4523        author_name: commit.author_name.to_string(),
4524    }
4525}
4526
4527fn proto_to_commit_details(proto: &proto::GitCommitDetails) -> CommitDetails {
4528    CommitDetails {
4529        sha: proto.sha.clone().into(),
4530        message: proto.message.clone().into(),
4531        commit_timestamp: proto.commit_timestamp,
4532        author_email: proto.author_email.clone().into(),
4533        author_name: proto.author_name.clone().into(),
4534    }
4535}
4536
4537async fn compute_snapshot(
4538    id: RepositoryId,
4539    work_directory_abs_path: Arc<Path>,
4540    prev_snapshot: RepositorySnapshot,
4541    backend: Arc<dyn GitRepository>,
4542) -> Result<(RepositorySnapshot, Vec<RepositoryEvent>)> {
4543    let mut events = Vec::new();
4544    let branches = backend.branches().await?;
4545    let branch = branches.into_iter().find(|branch| branch.is_head);
4546    let statuses = backend.status(&[WORK_DIRECTORY_REPO_PATH.clone()]).await?;
4547    let statuses_by_path = SumTree::from_iter(
4548        statuses
4549            .entries
4550            .iter()
4551            .map(|(repo_path, status)| StatusEntry {
4552                repo_path: repo_path.clone(),
4553                status: *status,
4554            }),
4555        &(),
4556    );
4557    let (merge_details, merge_heads_changed) =
4558        MergeDetails::load(&backend, &statuses_by_path, &prev_snapshot).await?;
4559    log::debug!("new merge details (changed={merge_heads_changed:?}): {merge_details:?}");
4560
4561    if merge_heads_changed
4562        || branch != prev_snapshot.branch
4563        || statuses_by_path != prev_snapshot.statuses_by_path
4564    {
4565        events.push(RepositoryEvent::Updated { full_scan: true });
4566    }
4567
4568    // Cache merge conflict paths so they don't change from staging/unstaging,
4569    // until the merge heads change (at commit time, etc.).
4570    if merge_heads_changed {
4571        events.push(RepositoryEvent::MergeHeadsChanged);
4572    }
4573
4574    // Useful when branch is None in detached head state
4575    let head_commit = match backend.head_sha().await {
4576        Some(head_sha) => backend.show(head_sha).await.log_err(),
4577        None => None,
4578    };
4579
4580    let snapshot = RepositorySnapshot {
4581        id,
4582        statuses_by_path,
4583        work_directory_abs_path,
4584        scan_id: prev_snapshot.scan_id + 1,
4585        branch,
4586        head_commit,
4587        merge: merge_details,
4588    };
4589
4590    Ok((snapshot, events))
4591}
4592
4593fn status_from_proto(
4594    simple_status: i32,
4595    status: Option<proto::GitFileStatus>,
4596) -> anyhow::Result<FileStatus> {
4597    use proto::git_file_status::Variant;
4598
4599    let Some(variant) = status.and_then(|status| status.variant) else {
4600        let code = proto::GitStatus::from_i32(simple_status)
4601            .with_context(|| format!("Invalid git status code: {simple_status}"))?;
4602        let result = match code {
4603            proto::GitStatus::Added => TrackedStatus {
4604                worktree_status: StatusCode::Added,
4605                index_status: StatusCode::Unmodified,
4606            }
4607            .into(),
4608            proto::GitStatus::Modified => TrackedStatus {
4609                worktree_status: StatusCode::Modified,
4610                index_status: StatusCode::Unmodified,
4611            }
4612            .into(),
4613            proto::GitStatus::Conflict => UnmergedStatus {
4614                first_head: UnmergedStatusCode::Updated,
4615                second_head: UnmergedStatusCode::Updated,
4616            }
4617            .into(),
4618            proto::GitStatus::Deleted => TrackedStatus {
4619                worktree_status: StatusCode::Deleted,
4620                index_status: StatusCode::Unmodified,
4621            }
4622            .into(),
4623            _ => anyhow::bail!("Invalid code for simple status: {simple_status}"),
4624        };
4625        return Ok(result);
4626    };
4627
4628    let result = match variant {
4629        Variant::Untracked(_) => FileStatus::Untracked,
4630        Variant::Ignored(_) => FileStatus::Ignored,
4631        Variant::Unmerged(unmerged) => {
4632            let [first_head, second_head] =
4633                [unmerged.first_head, unmerged.second_head].map(|head| {
4634                    let code = proto::GitStatus::from_i32(head)
4635                        .with_context(|| format!("Invalid git status code: {head}"))?;
4636                    let result = match code {
4637                        proto::GitStatus::Added => UnmergedStatusCode::Added,
4638                        proto::GitStatus::Updated => UnmergedStatusCode::Updated,
4639                        proto::GitStatus::Deleted => UnmergedStatusCode::Deleted,
4640                        _ => anyhow::bail!("Invalid code for unmerged status: {code:?}"),
4641                    };
4642                    Ok(result)
4643                });
4644            let [first_head, second_head] = [first_head?, second_head?];
4645            UnmergedStatus {
4646                first_head,
4647                second_head,
4648            }
4649            .into()
4650        }
4651        Variant::Tracked(tracked) => {
4652            let [index_status, worktree_status] = [tracked.index_status, tracked.worktree_status]
4653                .map(|status| {
4654                    let code = proto::GitStatus::from_i32(status)
4655                        .with_context(|| format!("Invalid git status code: {status}"))?;
4656                    let result = match code {
4657                        proto::GitStatus::Modified => StatusCode::Modified,
4658                        proto::GitStatus::TypeChanged => StatusCode::TypeChanged,
4659                        proto::GitStatus::Added => StatusCode::Added,
4660                        proto::GitStatus::Deleted => StatusCode::Deleted,
4661                        proto::GitStatus::Renamed => StatusCode::Renamed,
4662                        proto::GitStatus::Copied => StatusCode::Copied,
4663                        proto::GitStatus::Unmodified => StatusCode::Unmodified,
4664                        _ => anyhow::bail!("Invalid code for tracked status: {code:?}"),
4665                    };
4666                    Ok(result)
4667                });
4668            let [index_status, worktree_status] = [index_status?, worktree_status?];
4669            TrackedStatus {
4670                index_status,
4671                worktree_status,
4672            }
4673            .into()
4674        }
4675    };
4676    Ok(result)
4677}
4678
4679fn status_to_proto(status: FileStatus) -> proto::GitFileStatus {
4680    use proto::git_file_status::{Tracked, Unmerged, Variant};
4681
4682    let variant = match status {
4683        FileStatus::Untracked => Variant::Untracked(Default::default()),
4684        FileStatus::Ignored => Variant::Ignored(Default::default()),
4685        FileStatus::Unmerged(UnmergedStatus {
4686            first_head,
4687            second_head,
4688        }) => Variant::Unmerged(Unmerged {
4689            first_head: unmerged_status_to_proto(first_head),
4690            second_head: unmerged_status_to_proto(second_head),
4691        }),
4692        FileStatus::Tracked(TrackedStatus {
4693            index_status,
4694            worktree_status,
4695        }) => Variant::Tracked(Tracked {
4696            index_status: tracked_status_to_proto(index_status),
4697            worktree_status: tracked_status_to_proto(worktree_status),
4698        }),
4699    };
4700    proto::GitFileStatus {
4701        variant: Some(variant),
4702    }
4703}
4704
4705fn unmerged_status_to_proto(code: UnmergedStatusCode) -> i32 {
4706    match code {
4707        UnmergedStatusCode::Added => proto::GitStatus::Added as _,
4708        UnmergedStatusCode::Deleted => proto::GitStatus::Deleted as _,
4709        UnmergedStatusCode::Updated => proto::GitStatus::Updated as _,
4710    }
4711}
4712
4713fn tracked_status_to_proto(code: StatusCode) -> i32 {
4714    match code {
4715        StatusCode::Added => proto::GitStatus::Added as _,
4716        StatusCode::Deleted => proto::GitStatus::Deleted as _,
4717        StatusCode::Modified => proto::GitStatus::Modified as _,
4718        StatusCode::Renamed => proto::GitStatus::Renamed as _,
4719        StatusCode::TypeChanged => proto::GitStatus::TypeChanged as _,
4720        StatusCode::Copied => proto::GitStatus::Copied as _,
4721        StatusCode::Unmodified => proto::GitStatus::Unmodified as _,
4722    }
4723}