import re

### before run
# make sure the metafile name is correct, and the file is in the same location
# run with python3
# check if timebase position is right

### after run (in output.cue)
# insert title name
# change new.flac to a correct flac file name


def main():
    try: # exception when there is no such file
        f = open('part_A_FFMETADATAFILE')
        data = f.read()
        f.close()
        # print(data)
        split_data = re.split(r"\s*\n", data)
        timebase_index = split_data.index('TIMEBASE=1/1000000000')
        timebase = split_data[timebase_index].replace('TIMEBASE=1/', '')
        # timebase = split_data[3].replace('TIMEBASE=1/', '')
        # print(timebase)

        # create cue file
        f = open('output.cue', 'a')
        f.write('TITLE ""')
        f.write('\n')
        f.write('PERFORMER "fripSide"')
        f.write('\n')
        f.write('FILE "new.flac" WAVE')
        f.write('\n')
        f.close()

        count = 0
        track_number = 0
        for element in split_data:
            # print(element)
            if element == '[CHAPTER]':
                track_number += 1
                start = count + 2
                title = count + 4
                print(split_data[start].replace('START=', ''))
                print(split_data[title].replace('title=', ''))
                print('---------------------------------------------------------')

                f = open('output.cue', 'a')
                if track_number < 10:
                    f.write('  TRACK 0' + str(track_number) + ' AUDIO\n')
                else:
                    f.write('  TRACK ' + str(track_number) + ' AUDIO\n')
                f.write('    TITLE "')
                f.write(split_data[title].replace('title=', ''))
                f.write('"')
                f.write('\n')

                f.write('    PERFORMER "fripSide"')
                f.write('\n')

                index_sec = float(split_data[start].replace('START=', '')) / float(timebase)
                index_sec_str = str("{0:.0f}".format(index_sec % 60))
                print(index_sec_str)

                index_msec = index_sec % 1
                index_msec_str = str("{0:.2f}".format(index_msec)).replace('0.', '')
                print(index_msec_str)

                index_min = index_sec // 60
                index_min_str = str(index_min).replace('.0', '')
                print(index_min_str)

                f.write('    INDEX 01 ' + index_min_str + ':' + index_sec_str + ':' + index_msec_str)
                # f.write()
                f.write('\n')

                f.close()
                count += 1

            else:
                count += 1

    except FileNotFoundError:
        print('FileNotFoundError')



if __name__ == "__main__":
    main()