Use correct worktree when getting permalink to line (#8888)

Previously this code would call `project.visible_worktrees(cx).next`
which might not necessarily return the worktree matching the currently
open file.

What this change does is it adds `get_repo` method on `Project` that
allows us to get the `GitRepository` for the current buffer.

Release Notes:

- Fixed `open permalink to line` not working when multiple folders are
added to the project.

Co-authored-by: Mikayla <mikayla@zed.dev>

crates/editor/src/editor.rs

@@ -89,6 +89,7 @@ pub use multi_buffer::{
 use ordered_float::OrderedFloat;
 use parking_lot::{Mutex, RwLock};
 use project::project_settings::{GitGutterSetting, ProjectSettings};
+use project::Item;
 use project::{FormatTrigger, Location, Project, ProjectPath, ProjectTransaction};
 use rand::prelude::*;
 use rpc::proto::*;
@@ -8657,22 +8658,23 @@ impl Editor {
     fn get_permalink_to_line(&mut self, cx: &mut ViewContext<Self>) -> Result<url::Url> {
         use git::permalink::{build_permalink, BuildPermalinkParams};
 
-        let project = self.project.clone().ok_or_else(|| anyhow!("no project"))?;
-        let project = project.read(cx);
-
-        let worktree = project
-            .visible_worktrees(cx)
-            .next()
-            .ok_or_else(|| anyhow!("no worktree"))?;
-
-        let mut cwd = worktree.read(cx).abs_path().to_path_buf();
-        cwd.push(".git");
+        let (path, repo) = maybe!({
+            let project_handle = self.project.as_ref()?.clone();
+            let project = project_handle.read(cx);
+            let buffer = self.buffer().read(cx).as_singleton()?;
+            let path = buffer
+                .read(cx)
+                .file()?
+                .as_local()?
+                .path()
+                .to_str()?
+                .to_string();
+            let repo = project.get_repo(&buffer.read(cx).project_path(cx)?, cx)?;
+            Some((path, repo))
+        })
+        .ok_or_else(|| anyhow!("unable to open git repository"))?;
 
         const REMOTE_NAME: &str = "origin";
-        let repo = project
-            .fs()
-            .open_repo(&cwd)
-            .ok_or_else(|| anyhow!("no Git repo"))?;
         let origin_url = repo
             .lock()
             .remote_url(REMOTE_NAME)
@@ -8681,14 +8683,6 @@ impl Editor {
             .lock()
             .head_sha()
             .ok_or_else(|| anyhow!("failed to read HEAD SHA"))?;
-
-        let path = maybe!({
-            let buffer = self.buffer().read(cx).as_singleton()?;
-            let file = buffer.read(cx).file().and_then(|f| f.as_local())?;
-            file.path().to_str().map(|path| path.to_string())
-        })
-        .ok_or_else(|| anyhow!("failed to determine file path"))?;
-
         let selections = self.selections.all::<Point>(cx);
         let selection = selections.iter().peekable().next();
 

crates/project/src/project.rs

@@ -16,6 +16,7 @@ use clock::ReplicaId;
 use collections::{hash_map, BTreeMap, HashMap, HashSet, VecDeque};
 use copilot::Copilot;
 use debounced_delay::DebouncedDelay;
+use fs::repository::GitRepository;
 use futures::{
     channel::mpsc::{self, UnboundedReceiver},
     future::{try_join_all, Shared},
@@ -7302,6 +7303,18 @@ impl Project {
         })
     }
 
+    pub fn get_repo(
+        &self,
+        project_path: &ProjectPath,
+        cx: &AppContext,
+    ) -> Option<Arc<Mutex<dyn GitRepository>>> {
+        self.worktree_for_id(project_path.worktree_id, cx)?
+            .read(cx)
+            .as_local()?
+            .snapshot()
+            .local_git_repo(&project_path.path)
+    }
+
     // RPC message handlers
 
     async fn handle_unshare_project(

crates/project_core/src/worktree.rs

@@ -2116,6 +2116,11 @@ impl LocalSnapshot {
         Some((path, self.git_repositories.get(&repo.work_directory_id())?))
     }
 
+    pub fn local_git_repo(&self, path: &Path) -> Option<Arc<Mutex<dyn GitRepository>>> {
+        self.local_repo_for_path(path)
+            .map(|(_, entry)| entry.repo_ptr.clone())
+    }
+
     fn build_update(
         &self,
         project_id: u64,