#!/usr/bin/env python3.5
#
# Copyright (C) 2016,2017 The University of Sheffield, UK
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
""" Tool for obtaining md5/sha1/sha256 hashes for all files available
    at CDNJS.com."""

import getopt
import logging
import sys

from ExtensionCrawler.cdnjs_crawler import (
    update_jslib_archive, update_md5_map_file, update_sha1_map_file)
from ExtensionCrawler.config import (const_log_format, const_basedir)

# Script should run with python 3.4 or 3.5
assert sys.version_info >= (3, 4) and sys.version_info < (3, 6)


def helpmsg():
    """Print help message."""
    print("cdnjs-crawler [OPTION]")
    print("    -h        print this help text")
    print("    -s        silent (no log messages)")
    print("    -f        force full download (default: update of json files)")
    print("    -c        delete outdated (no longer available) libraries")
    print("    -a=<DIR>  archive directory")


def main(argv):
    """Main function of the extension crawler."""
    basedir = const_basedir()
    verbose = True
    force = False
    clean = False
    try:
        opts, args = getopt.getopt(argv, "hsed:a:o:w",
                                   ["date=", "archive=", "output="])
    except getopt.GetoptError:
        helpmsg()
        sys.exit(2)
    for opt, arg in opts:
        if opt == '-h':
            helpmsg()
            sys.exit()
        elif opt in ("-a", "--archive"):
            basedir = arg
        elif opt == '-s':
            verbose = False
        elif opt == '-f':
            force = True
        elif opt == '-c':
            clean = True

    if verbose:
        loglevel = logging.INFO
    else:
        loglevel = logging.WARNING

    logger = logging.getLogger()
    ch = logging.StreamHandler(sys.stdout)
    ch.setFormatter(logging.Formatter(const_log_format()))
    logger.addHandler(ch)
    logger.setLevel(loglevel)

    update_jslib_archive(force, clean, basedir)
    update_sha1_map_file(basedir)
    update_md5_map_file(basedir)


if __name__ == "__main__":
    main(sys.argv[1:])