#!/usr/bin/env python3
import argparse
import os

import zulip


def main() -> None:
    usage = """zulip-api-examples [script_name]

Prints the path to the Zulip API example scripts."""
    parser = argparse.ArgumentParser(usage=usage)
    parser.add_argument(
        "script_name", nargs="?", default="", help="print path to the script <script_name>"
    )
    args = parser.parse_args()
    zulip_path = os.path.abspath(os.path.dirname(zulip.__file__))
    examples_path = os.path.abspath(os.path.join(zulip_path, "examples", args.script_name))
    if os.path.isdir(examples_path) or (args.script_name and os.path.isfile(examples_path)):
        print(examples_path)
    else:
        raise OSError(
            "Examples cannot be accessed at {}: {} does not exist!".format(
                examples_path, "File" if args.script_name else "Directory"
            )
        )


if __name__ == "__main__":
    main()