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

# libray - Libre Blu-Ray PS3 ISO Tool
# Copyright © 2018 - 2021 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/>.

# This script transforms Datfile.dat and keys/*.key keyfiles into a sqlite3 keys.db
# Keys.db is then moved to libray/data/keys.db and packaged with libray in setup.py.
# Libray checks if this file is bundled with it and checks if it has a key for the .iso using a crc32 of it.
# TODO: In theory we could add the game-serials (BLUS-0000) and check that first.


import bs4
import sys
import shutil
import sqlite3
import pathlib


if __name__ == '__main__':

    db_path = pathlib.Path('keys.db')

    if db_path.exists():
        db_path.unlink()

    db = sqlite3.connect(db_path)
    c = db.cursor()

    c.execute('CREATE TABLE games (name TEXT, size TEXT, crc32 TEXT, md5 TEXT, sha1 TEXT, key BLOB)')
    db.commit()

    cwd = pathlib.Path(__file__).resolve().parent

    any_dats = [x for x in cwd.glob('*.dat')]

    if not any_dats:
        print('Error: No .dat file. Place the .dat file in the tools/ folder')
        sys.exit()

    datfile = any_dats[0]

    with open(datfile, 'r') as infile:

        soup = bs4.BeautifulSoup(infile.read(), features='html5lib')

        for game in soup.find_all('game'):

            name = game.find('description').text.strip()
            attrs = game.find('rom').attrs

            entry = [name, attrs['size'], attrs['crc'], attrs['md5'], attrs['sha1']]

            try:
                with open(cwd / ('keys/' + name + '.key'), 'rb') as keyfile:
                    entry.append(keyfile.read())
            except FileNotFoundError:
                print('Warning: key not found for ' + name)
                c.execute('INSERT INTO games (name, size, crc32, md5, sha1) VALUES (?, ?, ?, ?, ?)', entry)
                continue

            c.execute('INSERT INTO games VALUES (?, ?, ?, ?, ?, ?)', entry)

    db.commit()

    db.close()

    shutil.copyfile(db_path, ((cwd.parent / 'libray') / 'data/') / db_path.name)