#!/usr/bin/env fuchsia-vendored-python
# Copyright 2023 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import argparse
import os.path
import json
import sys
import tempfile


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument("--output", help="Write to this file")
    parser.add_argument(
        "--paths", action="append", help="package manifest lists"
    )
    args = parser.parse_args()

    out = tempfile.NamedTemporaryFile(
        "w", dir=os.path.dirname(args.output), delete=False
    )
    try:
        manifest_paths = set()
        for package_manifest_list_path in args.paths:
            with open(package_manifest_list_path, "r") as f:
                package_manifest_list = json.load(f)
                manifest_paths.update(
                    package_manifest_list["content"]["manifests"]
                )
        out_package_manifest_list = {
            "content": {"manifests": sorted(manifest_paths)},
            "version": "1",
        }

        out.write(
            json.dumps(out_package_manifest_list, indent=2, sort_keys=True)
        )
        out.close()

        os.replace(out.name, args.output)
    finally:
        try:
            os.unlink(out.name)
        except FileNotFoundError:
            pass


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