import argparse
import os
import pathlib
import subprocess


def run_prettier(prettier: pathlib.Path, check: bool) -> int:
    # Explicitly ignore anything in the output directories or any symlinks in the root of the repository
    # to prevent bad symlinks from failing the run, see https://github.com/prettier/prettier/issues/11568 as
    # to why it the paths being present in .prettierignore isn't sufficient
    force_exclude_dirs = {
        "!./build",
        "!./bazel-bin",
        "!./bazel-out",
        "!./bazel-mongo",
        "!./external",
    }
    for path in pathlib.Path(".").iterdir():
        if path.is_symlink():
            force_exclude_dirs.add(f"!./{path}")
    try:
        command = [prettier, "."] + list(force_exclude_dirs)
        if check:
            command.append("--check")
        else:
            command.append("--write")
        print(f"Running command: '{command}'")
        subprocess.run(command, check=True)
    except subprocess.CalledProcessError:
        print("Found formatting errors. Run 'bazel run //:format' to fix")
        print("*** IF BAZEL IS NOT INSTALLED, RUN THE FOLLOWING: ***\n")
        print("python buildscripts/install_bazel.py")
        return 1

    if check:
        print("No formatting errors")
    return 0


def main() -> int:
    # If we are running in bazel, default the directory to the workspace
    default_dir = os.environ.get("BUILD_WORKSPACE_DIRECTORY")
    if not default_dir:
        print("This script must be run though bazel. Please run 'bazel run //:format' instead")
        print("*** IF BAZEL IS NOT INSTALLED, RUN THE FOLLOWING: ***\n")
        print("python buildscripts/install_bazel.py")
        return 1

    parser = argparse.ArgumentParser(
        prog="Format", description="This script formats code in mongodb"
    )

    parser.add_argument("--check", help="Run in check mode", default=False, action="store_true")
    parser.add_argument(
        "--prettier", help="Set the path to prettier", required=True, type=pathlib.Path
    )

    args = parser.parse_args()
    prettier_path: pathlib.Path = args.prettier.resolve()

    os.chdir(default_dir)
    return run_prettier(prettier_path, args.check)


if __name__ == "__main__":
    exit(main())