import subprocess

def run_command(command):
    result = subprocess.run(command, shell=True, text=True, capture_output=True)
    return result.stdout.strip()

def get_first_alphabetical_diff():
    # Get the list of modified files
    modified_files = run_command("git diff --name-only").splitlines()
    # Return the first file in alphabetical order if there are any modified files, otherwise return None
    return sorted(modified_files)[0] if modified_files else None

def has_remote_changes():
    subprocess.run("git fetch", shell=True)  # Ensure we have the latest info
    status = run_command("git status")
    return "Your branch is behind" in status

def has_local_changes():
    # Instead of checking for the presence of changes, return the first file that has been changed
    return get_first_alphabetical_diff()

def main():
    first_diff = has_local_changes()
    if has_remote_changes():
        print("Pulling changes...")
        run_command("git pull")
    elif first_diff:
        print("Adding and committing local changes...")
        run_command("git add .")
        # Use the first differing file in the commit message
        commit_message = f'Updated ({first_diff})'
        run_command(f'git commit -S -m "{commit_message}"')
        run_command("git push")
    else:
        print("No changes to update.")

if __name__ == "__main__":
    main()