#! /usr/bin/env python

from pep8 import check_pep8
from server_lib import lister

import sys
import optparse
from typing import cast, Callable, Dict, Iterator, List

EXCLUDED_FILES = [
    # This is an external file that doesn't comply with our codestyle
    'zulip/integrations/perforce/git_p4.py',
]

def lint_all(args, options):

    by_lang = cast(Dict[str, List[str]],
                   lister.list_files(args, modified_only=options.modified,
                                     ftypes=['py', 'sh', 'js', 'pp', 'css', 'handlebars',
                                             'html', 'json', 'md', 'txt', 'text', 'yaml'],
                                     use_shebang=True, group_by_ftype=True, exclude=EXCLUDED_FILES))
    failed = check_pep8(by_lang['py'])
    return failed

def run():
    # type: () -> None
    parser = optparse.OptionParser()
    parser.add_option('--modified', '-m',
                      action='store_true',
                      help='Only check modified files')
    (options, args) = parser.parse_args()
    failed = lint_all(args, options)
    sys.exit(1 if failed else 0)

if __name__ == '__main__':
    run()
