#!/usr/bin/env fuchsia-vendored-python
# Copyright 2018 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 json
import os
import sys


def main():
    parser = argparse.ArgumentParser("Builds a metadata file")
    parser.add_argument("--out", help="Path to the output file", required=True)
    parser.add_argument("--name", help="Name of the library", required=True)
    parser.add_argument(
        "--root", help="Root of the library in the SDK", required=True
    )
    parser.add_argument(
        "--specs", help="Path to spec files of dependencies", nargs="*"
    )
    parser.add_argument(
        "--stable",
        help="Whether this library is stabilized",
        action="store_true",
    )
    parser.add_argument("--sources", help="List of library sources", nargs="+")
    args = parser.parse_args()

    metadata = {
        "type": "fidl_library",
        "name": args.name,
        "root": args.root,
        "sources": args.sources,
        "stable": args.stable,
    }

    deps = []
    for spec in args.specs:
        with open(spec, "r") as spec_file:
            data = json.load(spec_file)
        type = data["type"]
        name = data["name"]
        if type == "fidl_library":
            deps.append(name)
        else:
            raise Exception("Unsupported dependency type: %s" % type)
    metadata["deps"] = deps

    with open(args.out, "w") as out_file:
        json.dump(
            metadata, out_file, indent=2, sort_keys=True, separators=(",", ": ")
        )

    return 0


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