import { writable } from 'svelte/store';

function createVideosStore() {
  const { subscribe, set, update } = writable({videos: [], idx_videos: {}, loading: true});

  return {
    subscribe,
    update: async (res_videos, cb=null) => {
      if (res_videos.status === 200) {
        const videos = await res_videos.json();
        const idx_videos = {};

        for (const v of videos) {
          idx_videos[v.id] = v;
        }

        update((t) => (Object.assign(t, {videos, idx_videos, loading: false})));

        if (cb) {
          cb(videos);
        }
      }
    },
  };
}

export const videos = createVideosStore();