Start work on Git "un"helper functions.

Worse is better.  I'll revisit the OCaml Git package once I'm more
comfortable with OCaml overall.

1 files changed, 8 insertions, 17 deletions

diff --git a/lib/git_helpers.ml b/lib/git_helpers.ml
index d973a88..0626d02 100644
--- a/lib/git_helpers.ml
+++ b/lib/git_helpers.ml
@@ -1,20 +1,11 @@
 open Lwt.Infix
-open Git_unix
 
 let get_head_commit_hash repo_path =
-  let root = Fpath.v repo_path in
-
-  (* 1. Open the Git repository *)
-  let%lwt repo =
-    Store.v root >>= function
-    | Ok repo -> Lwt.return repo
-    | Error _ -> Lwt.fail_with "Could not open the Git repository."
-  in
-
-  (* 2. Resolve HEAD to get the latest commit hash *)
-  let%lwt commit_hash =
-    Git_unix.Store.Ref.resolve repo Git.Reference.master >>= function
-    | Ok hash -> Lwt.return hash
-    | Error _ -> Lwt.fail_with "Failed to resolve HEAD"
-  in
-  Lwt.return @@ (commit_hash |> Digestif.SHA1.to_hex)
+  let full_path = Filename.concat Config.git_directory repo_path in
+  let%lwt store_result = Git_unix.Store.v @@ Fpath.v full_path in
+  match store_result with
+  | Error _ -> Lwt.return_error "Could not open the Git repository."
+  | Ok store -> (
+      Git_unix.Store.Ref.resolve store Git.Reference.head >|= function
+      | Error _ -> Error ("Failed to resolve HEAD for repo " ^ repo_path)
+      | Ok hash -> Ok (Git_unix.Store.Hash.to_hex hash))