# wikiget - CLI tool for downloading files from Wikimedia sites
# Copyright (C) 2018-2021 Cody Logan and contributors
# SPDX-License-Identifier: GPL-3.0-or-later
#
# Wikiget 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.
#
# Wikiget 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 Wikiget. If not, see <https://www.gnu.org/licenses/>.

import argparse
import logging
import sys

from wikiget import DEFAULT_SITE, DEFAULT_PATH, wikiget_version
from wikiget.dl import download


def main():
    """
    Main entry point for console script. Automatically compiled by setuptools
    when installed with `pip install` or `python setup.py install`.
    """

    parser = argparse.ArgumentParser(
        description="""
        A tool for downloading files from
        MediaWiki sites using the file name or
        description page URL
        """,
        epilog="""
        Copyright (C) 2018-2023 Cody Logan
        and contributors.
        License GPLv3+: GNU GPL version 3 or later
        <http://www.gnu.org/licenses/gpl.html>.
        This is free software; you are free to
        change and redistribute it under certain
        conditions. There is NO WARRANTY, to the
        extent permitted by law.
        """,
    )
    parser.add_argument(
        "FILE",
        help="""
        name of the file to download with the File:
        prefix, or the URL of its file description page
        """,
    )
    parser.add_argument(
        "-V", "--version", action="version", version=f"%(prog)s {wikiget_version}"
    )
    message_options = parser.add_mutually_exclusive_group()
    message_options.add_argument(
        "-q", "--quiet", help="suppress warning messages", action="store_true"
    )
    message_options.add_argument(
        "-v",
        "--verbose",
        help="print detailed information; use -vv for even more detail",
        action="count",
        default=0,
    )
    parser.add_argument(
        "-f", "--force", help="force overwriting existing files", action="store_true"
    )
    parser.add_argument(
        "-s",
        "--site",
        default=DEFAULT_SITE,
        help="MediaWiki site to download from " "(default: %(default)s)",
    )
    parser.add_argument(
        "-p",
        "--path",
        default=DEFAULT_PATH,
        help="MediaWiki site path, where api.php is located " "(default: %(default)s)",
    )
    parser.add_argument(
        "--username", default="", help="MediaWiki site username, for private wikis"
    )
    parser.add_argument(
        "--password", default="", help="MediaWiki site password, for private wikis"
    )
    output_options = parser.add_mutually_exclusive_group()
    output_options.add_argument("-o", "--output", help="write download to OUTPUT")
    output_options.add_argument(
        "-a",
        "--batch",
        help="treat FILE as a textfile containing "
        "multiple files to download, one URL or "
        "filename per line",
        action="store_true",
    )

    args = parser.parse_args()

    # print API and debug messages in verbose mode
    if args.verbose >= 2:
        logging.basicConfig(level=logging.DEBUG)
    elif args.verbose >= 1:
        logging.basicConfig(level=logging.WARNING)

    if args.batch:
        # batch download mode
        input_file = args.FILE
        if args.verbose >= 1:
            print(f"Info: using batch file '{input_file}'")
        try:
            fd = open(input_file, "r")
        except IOError as e:
            print("File could not be read. " "The following error was encountered:")
            print(e)
            sys.exit(1)
        else:
            with fd:
                for _, line in enumerate(fd):
                    line = line.strip()
                    download(line, args)
    else:
        # single download mode
        dl = args.FILE
        download(dl, args)