#!/usr/bin/env python3

import fnmatch
import itertools
import sys

import strictyaml
import whatthepatch

maintainers_schema = strictyaml.MapPattern(strictyaml.Str(), strictyaml.Map({
    strictyaml.Optional('Status'): strictyaml.Enum(["Supported", "Maintained"]),
    strictyaml.Optional('Maintainers'): strictyaml.Seq(strictyaml.Email()),
    strictyaml.Optional('Reviewers'): strictyaml.Seq(strictyaml.Email()),
    strictyaml.Optional('Lists'): strictyaml.Seq(strictyaml.Email()),
    strictyaml.Optional('Issue Trackers'): strictyaml.Seq(strictyaml.Url()),
    strictyaml.Optional('Patch Trackers'): strictyaml.Seq(strictyaml.Url()),
    strictyaml.Optional('Repositories'): strictyaml.Seq(strictyaml.Str()),
    strictyaml.Optional('Files'): strictyaml.Seq(strictyaml.Str()),
}))

with open('MAINTAINERS') as f:
    maintainers = strictyaml.load(f.read(), maintainers_schema).data

with open(sys.argv[1]) as f:
    patch_files = list(set(itertools.chain.from_iterable((diff.header.old_path, diff.header.new_path) for diff in whatthepatch.parse_patch(f.read()))))

    for filename in patch_files:
        for k, v in maintainers.items():
            for pattern in v.get('Files', []):
                if fnmatch.fnmatch(filename, pattern):
                    print(f'{k}: {pattern} matches')