import { Command } from 'commander';
import { checkbox } from '@inquirer/prompts';
import { getAllPlaylistMetas, getPlaylistSongs } from './lib/services/jellyfin.ts';
import type { Playlist } from './lib/services/jellyfin.ts';
import { downloadsFromPlaylists, downloadSongs } from './lib/fileDownloader.ts';
import { writeM3UFile } from './lib/m3uWriter.ts';
import 'dotenv/config';

const program = new Command();

const { JF_SERVER, JF_USERNAME, JF_PASSWORD, DEST_FOLDER, REMOTE_ROOT_PATH } =
  process.env;

program
  .name('')
  .description('CLI to download Jellyfin Playlists to mp3 player m3u format.')
  .version('0.0.1');

program
  .command('wizard')
  .description('Start the CLI wizzard to select playlists and start the downloads')
  .action(async (str, options) => {
    console.log('Fetching playlist information...');
    if (!JF_SERVER) {
      console.error('Missing required env var JF_SERVER.  Exiting...');
      process.exit();
    }
    if (!JF_USERNAME) {
      console.error('Missing required env var JF_USERNAME.  Exiting...');
      process.exit();
    }
    if (!JF_PASSWORD) {
      console.error('Missing required env var JF_PASSWORD.  Exiting...');
      process.exit();
    }
    if (!DEST_FOLDER) {
      console.error('Missing required env var DEST_FOLDER.  Exiting...');
      process.exit();
    }
    //TODO: Get this from the library path??
    if (!REMOTE_ROOT_PATH) {
      console.error('Missing required env var REMOTE_ROOT_PATH.  Exiting...');
      process.exit();
    }
    const creds = {
      server: JF_SERVER,
      user: JF_USERNAME,
      password: JF_PASSWORD,
    };
    const playlistMetas = await getAllPlaylistMetas(creds);
    const answer = await checkbox<string>({
      message: 'Which playlists would you like to download?',
      choices: playlistMetas.map((pl: Playlist) => ({ name: pl.Name, value: pl.Id })),
    });

    const playlists = await getPlaylistSongs(creds, answer, playlistMetas);
    console.log('Downloading songs to ', DEST_FOLDER);
    const songsToDownload = downloadsFromPlaylists(playlists);

    await downloadSongs(creds, songsToDownload, DEST_FOLDER);

    await Promise.all(playlists.map(pl => writeM3UFile(DEST_FOLDER, pl)));
  });

await program.parseAsync(process.argv);