#!/usr/bin/env python3
# -*- coding: utf8 -*-

# libray - Libre Blu-Ray PS3 ISO Tool
# Copyright © 2018 - 2024 Nichlas Severinsen
#
# This file is part of libray.
#
# libray 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.
#
# libray 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 libray.  If not, see <https://www.gnu.org/licenses/>.

import multiprocessing

try:
    multiprocessing.set_start_method('spawn')
except RuntimeError:
    pass

import argparse
import sys


try:
    from libray import core
except ImportError:
    import core


def main():
    parser = argparse.ArgumentParser(
        description='A Libre (FLOSS) Python application for unencrypting, extracting, repackaging, and encrypting PS3 ISOs')

    required = parser.add_mutually_exclusive_group(required=True)
    required.add_argument('-i', '--iso', dest='iso', type=str, help='Path to .iso file or stream')
    required.add_argument('-k', '--ird', dest='ird', type=str, help='Path to .ird file', default='')

    optional = parser.add_argument_group('optional arguments')
    optional.add_argument('-o', '--output', dest='output', type=str, help='Output filename', default='')
    optional.add_argument('-d', '--decryption-key', dest='decryption_key', type=str, help='Manually specify key', default='')
    optional.add_argument('-v', '--verbose', dest='verbose', help='Increase verbosity', action='count')
    optional.add_argument('-q', '--quiet', dest='quiet', help='Quiet mode, only prints on error', action='store_true')
    # -e is reserved for "extract" so re-encrypt is "-r"
    optional.add_argument('-r', '--re-encrypt', dest='reencrypt', help='Re-encrypt .iso', action='store_true')
    optional.add_argument('-c', '--checksum', dest='checksum', help='Allow fallback to CRC32 checksum (disabled by default)', action='store_true')
    optional.add_argument('-t', '--checksum-timeout', dest='checksum_timeout', type=int, help='How many seconds to wait for CRC32 checksum (default 15)', default=15)
    optional.add_argument('-p', '--threads', dest='threads', type=int, help='Number of threads for parallel decryption/encryption (default: number of CPU cores)', default=0)
    optional.add_argument('--info', dest='info', action='store_true', help='Print info about .iso or .ird, then quit.')

    args = parser.parse_args()

    if args.info:
        core.info(args)

    if not args.iso:
        core.error('No .iso file given. Use -i/--iso path/to/file.iso')

    if args.reencrypt:
        core.encrypt(args)
    else:
        core.decrypt(args)


if __name__ == '__main__':
    main()