feat: status api

internal/repo/game.go

@@ -58,10 +58,14 @@ func saveState(s Storage, g game.Game) error {
 }
 
 func (r *repo) LoadState() (game.Game, error) {
-	return loadState(r.s)
+	return loadState(r.s, true)
 }
 
-func loadState(s Storage) (game.Game, error) {
+func (r *repo) LoadStateSafe() (game.Game, error) {
+	return loadState(r.s, false)
+}
+
+func loadState(s Storage, locked bool) (game.Game, error) {
 	var g game.Game
 	path := statePath
 	exist, err := s.Exists(path)
@@ -69,10 +73,16 @@ func loadState(s Storage) (game.Game, error) {
 		return g, NewStorageError(err)
 	}
 	if !exist {
-		return g, NewStateError("latest state was never stored")
+		return g, NewGameNotInitializedError()
 	}
-	if err := s.Read(path, &g); err != nil {
-		return g, NewStorageError(err)
+	if locked {
+		if err := s.Read(path, &g); err != nil {
+			return g, NewStorageError(err)
+		}
+	} else {
+		if err := s.ReadSafe(path, &g); err != nil {
+			return g, NewStorageError(err)
+		}
 	}
 	return g, nil
 }