WIP: operator collaboration MVP

See toolshed/organising#467

pkg/git/commit.go

@@ -45,3 +45,39 @@ func Commit(repoPath, commitMessage string, dryRun bool) error {
 
 	return nil
 }
+
+// CommitFile commits a specific file.
+func CommitFile(repoPath, filePath, commitMessage string, dryRun bool) error {
+	if commitMessage == "" {
+		return fmt.Errorf("no commit message specified?")
+	}
+
+	commitRepo, err := git.PlainOpen(repoPath)
+	if err != nil {
+		return err
+	}
+
+	commitWorktree, err := commitRepo.Worktree()
+	if err != nil {
+		return err
+	}
+
+	if !dryRun {
+		if _, err := commitWorktree.Add(filePath); err != nil {
+			return fmt.Errorf("unable to add %s: %s", filePath, err)
+		}
+	}
+
+	opts := &git.CommitOptions{}
+	if !dryRun {
+		_, err = commitWorktree.Commit(commitMessage, opts)
+		if err != nil {
+			return err
+		}
+		log.Debug("git changes commited")
+	} else {
+		log.Debug("dry run: no changes commited")
+	}
+
+	return nil
+}