#!/usr/bin/python

import warnings
warnings.filterwarnings("ignore")

import os
import pkg_resources
import sys

from yum import YumBase


if __name__ == '__main__':
    if len(sys.argv) != 3:
        print("%s package-name python-name" % (os.path.basename(sys.argv[0])))
        sys.exit(1)

    pkg_name = sys.argv[1]
    py_name = sys.argv[2]
    req = pkg_resources.Requirement.parse(py_name)

    base = YumBase()
    base.doConfigSetup(debuglevel=-1, errorlevel=-1)
    pkgs = base.doPackageLists(patterns=[pkg_name], ignore_case=True,
                               showdups=True)
    all_pkgs = list(pkgs.available)
    all_pkgs.extend(pkgs.installed)

    yum_map = {}
    for pkg in all_pkgs:
        for provides in pkg.provides:
            pkg_info = (pkg.version, pkg.repo, pkg)
            yum_map.setdefault(provides[0], set()).add(pkg_info)

    matches = []
    yum_versions = yum_map.get(pkg_name, [])
    for (version, repo, pkg) in yum_versions:
            if version in req:
                matches.append(pkg)

    if matches:
        # Pick the newest match.
        match = sorted(matches)[-1]
        print(match)
        sys.exit(0)
    else:
        sys.exit(1)