Scope Git watching and status to the sync directory (#503)

crates/yaak-git/src/commit.rs

@@ -1,11 +1,39 @@
 use crate::binary::new_binary_command;
 use crate::error::Error::GenericError;
+use crate::repository::open_repo;
+use crate::status::repo_relative_dir;
 use log::info;
 use std::path::Path;
 
+/// Commit the staged changes within `dir` (their current worktree content,
+/// matching what the commit dialog displays). Scoping the commit to the sync
+/// directory means files staged outside of it (e.g. elsewhere in a containing
+/// monorepo) are never swept into a Yaak commit — they stay staged for the
+/// user's own next commit.
 pub async fn git_commit(dir: &Path, message: &str) -> crate::error::Result<()> {
-    let out =
-        new_binary_command(dir).await?.args(["commit", "--message", message]).output().await?;
+    // Run git from the repo root: command-line pathspecs resolve relative to
+    // the working directory, and staged paths are repo-root-relative
+    let (workdir, rela_dir) = {
+        let repo = open_repo(dir)?;
+        let workdir = repo
+            .workdir()
+            .ok_or_else(|| GenericError("Repository has no worktree".to_string()))?
+            .to_path_buf();
+        (workdir, repo_relative_dir(&repo, dir))
+    };
+
+    let staged = staged_files(&workdir, rela_dir.as_deref()).await?;
+    if staged.is_empty() {
+        return Err(GenericError("No staged changes to commit".to_string()));
+    }
+
+    let mut cmd = new_binary_command(&workdir).await?;
+    // --literal-pathspecs: the staged paths are exact files, never patterns
+    cmd.arg("--literal-pathspecs");
+    cmd.args(["commit", "--message", message, "--"]);
+    cmd.args(staged);
+
+    let out = cmd.output().await?;
 
     let stdout = String::from_utf8_lossy(&out.stdout);
     let stderr = String::from_utf8_lossy(&out.stderr);
@@ -19,3 +47,60 @@ pub async fn git_commit(dir: &Path, message: &str) -> crate::error::Result<()> {
 
     Ok(())
 }
+
+/// Repo-relative paths of staged changes, limited to `rela_dir` when given.
+/// Must be run from the repo root so the pathspec resolves correctly. Uses
+/// -z for NUL separation so paths with special characters come through
+/// unquoted, --no-renames so staged renames list both sides, and
+/// --literal-pathspecs so a scope dir with glob characters isn't a pattern
+async fn staged_files(workdir: &Path, rela_dir: Option<&str>) -> crate::error::Result<Vec<String>> {
+    let mut cmd = new_binary_command(workdir).await?;
+    cmd.arg("--literal-pathspecs");
+    cmd.args(["diff", "--cached", "--name-only", "--no-renames", "-z"]);
+    if let Some(rela_dir) = rela_dir {
+        cmd.args(["--", rela_dir]);
+    }
+    let out = cmd.output().await?;
+
+    if !out.status.success() {
+        let stderr = String::from_utf8_lossy(&out.stderr);
+        return Err(GenericError(format!("Failed to list staged files: {}", stderr)));
+    }
+
+    Ok(String::from_utf8_lossy(&out.stdout)
+        .split('\0')
+        .filter(|p| !p.is_empty())
+        .map(String::from)
+        .collect())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[tokio::test]
+    async fn test_staged_files_scoped() {
+        let tmp = tempfile::tempdir().unwrap();
+        let repo = git2::Repository::init(tmp.path()).unwrap();
+
+        // Scope dir name doubles as a glob pattern; sync1 is its glob decoy
+        let sync_dir = tmp.path().join("sync[1]");
+        std::fs::create_dir(&sync_dir).unwrap();
+        std::fs::write(sync_dir.join("yaak.req_1.yaml"), "inside").unwrap();
+        std::fs::create_dir(tmp.path().join("sync1")).unwrap();
+        std::fs::write(tmp.path().join("sync1").join("decoy.txt"), "decoy").unwrap();
+        std::fs::write(tmp.path().join("outside.txt"), "outside").unwrap();
+
+        let mut index = repo.index().unwrap();
+        index.add_path(Path::new("sync[1]/yaak.req_1.yaml")).unwrap();
+        index.add_path(Path::new("sync1/decoy.txt")).unwrap();
+        index.add_path(Path::new("outside.txt")).unwrap();
+        index.write().unwrap();
+
+        let scoped = staged_files(tmp.path(), Some("sync[1]")).await.unwrap();
+        assert_eq!(scoped, vec!["sync[1]/yaak.req_1.yaml"]);
+
+        let all = staged_files(tmp.path(), None).await.unwrap();
+        assert_eq!(all.len(), 3);
+    }
+}