#!/usr/bin/env python3
# -*- coding: UTF-8 -*-
# -----------------------------------------------------------------------------------------------------------
# Copyright (c) 2026 Huawei Technologies Co., Ltd.
# This program is free software, you can redistribute it and/or modify it under the terms and conditions of
# CANN Open Software License Agreement Version 2.0 (the "License").
# Please refer to the License for details. You may not use this file except in compliance with the License.
# THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
# INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
# See LICENSE in the root of the software repository for the full text of the License.
# -----------------------------------------------------------------------------------------------------------

"""Generate a version.info file."""

import argparse
import logging
import os
import sys
from datetime import datetime, timedelta, timezone
from typing import Iterable, Iterator


def gen_version_info_content(version: str, deps: Iterable[str]) -> Iterator[str]:
    """Generate the version.info file content."""
    yield f"Version={version}"
    yield "version_dir=cann"
    deps_iter = iter(deps)
    for dep_pkg in deps_iter:
        dep_info = next(deps_iter)
        yield f'required_package_{dep_pkg}_version="{dep_info}"'
    if os.environ.get("tagInfo"):
        tag_info = os.environ.get("tagInfo")
        timestamp = "_".join(tag_info.split("_")[-3:-1])
    else:
        timestamp = datetime.now(timezone(timedelta(hours=8))).strftime("%Y%m%d_%H%M%S%f")[:-3]
    yield f"timestamp={timestamp}"
    yield ""


def main() -> bool:
    """Run the generator."""
    parser = argparse.ArgumentParser()
    parser.add_argument("version", help="Version number.")
    parser.add_argument("deps", nargs="*", help="Dependency information.")
    parser.add_argument("--output", required=True, help="Output file path.")
    args = parser.parse_args()

    logging.basicConfig(format=f"{os.path.basename(__file__)}: %(levelname)s: %(message)s")

    if len(args.deps) % 2 != 0:
        logging.error("The deps argument must contain an even number of elements!")
        return False

    content = "\n".join(gen_version_info_content(args.version, args.deps))
    with open(args.output, "w", encoding="utf-8") as file:
        file.write(content)

    return True


if __name__ == "__main__":
    if not main():
        sys.exit(1)