#!/usr/bin/python3

# Copyright (C) 2020 Igor Raits <ignatenkobrain@fedoraproject.org>.

#

# Fedora-License-Identifier: GPLv3+

# SPDX-2.0-License-Identifier: GPL-3.0+

# SPDX-3.0-License-Identifier: GPL-3.0-or-later

#

# This program is free software.

# For more information on the license, see COPYING.

# For more information on free software, see

# <https://www.gnu.org/philosophy/free-sw.en.html>.

import argparse

import json

import re

import sys

def main():

    parser = argparse.ArgumentParser()

    group = parser.add_mutually_exclusive_group(required=True)

    group.add_argument(

        "-P", "--provides", action="store_const", const="provides", dest="action"

    )

    group.add_argument(

        "-R", "--requires", action="store_const", const="requires", dest="action"

    )

    args = parser.parse_args()

    files = sys.stdin.read().splitlines()

    for f in files:

        with open(f, "r") as fobj:

            info = json.load(fobj)["collection_info"]

            if args.action == "provides":

                print(

                    f"ansible-collection({info['namespace']}.{info['name']}) = {info['version']}"

                )

            if args.action == "requires":

                # Require either ansible-core or a version of ansible 2.9 that

                # supports collections but prefer ansible-core.

                print("(ansible-core or (ansible < 2.10.0 with ansible >= 2.9.10))")

                for dep, req in info.get("dependencies", {}).items():

                    print(f"ansible-collection({dep})", end="")

                    if req == "*":

                        print()

                        continue

                    m = re.match(r"^>=(\d+\.\d+\.\d+)$", req)

                    if m:

                        print(f" >= {m.group(1)}")

                        continue

                    raise NotImplementedError(

                        "Generation of dependencies different than '*' or '>=' is not supported yet"

                    )

if __name__ == "__main__":

    main()