import { DOWNLOAD_PATH } from '$env/static/private';
import { redirect } from '@sveltejs/kit';
import youtubedl from 'youtube-dl-exec';

const isAudioFormat = (format: string) => {
	let isAudio = false;

	switch (format) {
		case 'mp3':
			isAudio = true;
			break;
		default:
			isAudio = false;
			break;
	}

	return isAudio;
};

const isVideoFormat = (format: string) => {
  let isVideo = false;

  switch (format) {
    case 'mp4':
      isVideo = true;
      break;
    default:
      isVideo = false;
      break;
  }

  return isVideo;
}

export const actions = {
	download: async ({ request, cookies }) => {
		const data = await request.formData();

		const obj = {};
		for (const element of data) {
			obj[element[0]] = element[1];
		}

		const { format, source, link } = obj;

		if (!(format && source && link)) {
			throw redirect(307, '/');
		}

		console.info(`Asked ${source} download of ${link}`);

    switch (source) {
			case 'youtube':
        const options =  {
					output: `${DOWNLOAD_PATH}/%(artist)s-%(title)s.%(ext)s`,
					embedThumbnail: true	
        }

        if (isAudioFormat(format)) {
          options.extractAudio = true;
          options.audioFormat = format;
        }

				isVideoFormat(format) ? options.format = format : ''

        const output = await youtubedl(link);

				console.log(output);
				console.info(`Downloaded ${link} to ${output}`);

				break;
			case 'spotify':
				break;
			default:
				console.error('ops');
		}

		return { success: true };
	}
};