import {readdir, readFile, stat} from 'fs/promises';
import {join} from 'path';

const BASE_PATH = 'public/games';

export type Game = {
  id: string,
  name: string,
  main: string,
  thumbnail?: string,
  data: {
    aspectRatio: number,
  },
}

export const getAvailableGames = async (): Promise<Game[]> => {
  const dirs = await readdir(BASE_PATH);
  const dirStat = await Promise.all(dirs.map(async (d) => ({
    id: d,
    stat: await stat(join(BASE_PATH, d)),
  })));
  const gameStat = dirStat.filter((d) => d.stat.isDirectory());
  return Promise.all(gameStat.map(async (g) => {
    const manifestBuffer = await readFile(join(BASE_PATH, g.id, 'manifest.json'));
    const manifestString = manifestBuffer.toString('utf-8');
    const manifestJson = JSON.parse(manifestString);
    return {
      ...manifestJson,
      id: g.id,
    };
  }));
}