#!/usr/bin/env python3
from lib import *
import sys
import os
import argparse


def parse_args():
    parser = argparse.ArgumentParser(
        description='Download clips from a course',
    )

    parser.add_argument('courseId', type=str, help='Course ID')
    parser.add_argument('--outDir', type=str,
                        help='Output directory', default='./out')
    parser.add_argument('--starterUrl', type=str,
                        help='Starter URL', default="https://www.fau.tv/auth/sso")
    parser.add_argument('--startAt', type=int,
                        help='Skip all previous indizes (starts at 1)', default=1)

    return parser.parse_args()


def main():
    args = parse_args()

    load_token(args.starterUrl)

    os.makedirs(args.outDir, exist_ok=True)

    for index, clip_id in enumerate(get_course_clip_ids(args.courseId)):
        if index < args.startAt - 1:
            continue

        download_clip(clip_id, f'{args.outDir}/{index+1: 04d}_{clip_id}.mp4')


if __name__ == '__main__':
    main()