import { HttpReader, ZipWriter } from "@zip.js/zip.js";
import { showSaveFilePicker } from "native-file-system-adapter";

/**
 * @typedef UserProfile
 * @property {number} id
 * @property {string} first_name
 * @property {string} last_name
 * @property {string} nick_name
 * @property {string} display_name
 * @property {string} profile_url
 * @property {string} profile_pict
 */
/**
 * @typedef Picture
 * @property {number} id
 * @property {string} name
 * @property {number} size
 * @property {string} date
 * @property {UserProfile} owner
 * @property {string} full_size_url
 * @property {string} compressed_url
 * @property {string} thumb_url
 * @property {string} album
 * @property {boolean} is_moderated
 * @property {boolean} asked_for_removal
 */

/**
 * Load user picture page with a nice download bar
 * @param {string} Url of the api endpoint to fetch pictures from the user
 **/
window.loadPicturePage = (apiUrl) => {
  document.addEventListener("alpine:init", () => {
    Alpine.data("user_pictures", () => ({
      isDownloading: false,
      loading: true,
      pictures: [],
      albums: {},

      async init() {
        // biome-ignore lint/correctness/noUndeclaredVariables: imported from script.json
        this.pictures = await fetchPaginated(apiUrl);
        this.albums = this.pictures.reduce((acc, picture) => {
          if (!acc[picture.album]) {
            acc[picture.album] = [];
          }
          acc[picture.album].push(picture);
          return acc;
        }, {});
        this.loading = false;
      },

      async downloadZip() {
        this.isDownloading = true;
        const bar = this.$refs.progress;
        bar.value = 0;
        bar.max = this.pictures.length;

        const incrementProgressBar = () => {
          bar.value++;
        };

        const fileHandle = await showSaveFilePicker({
          _preferPolyfill: false,
          suggestedName: interpolate(
            gettext("pictures.%(extension)s"),
            { extension: "zip" },
            true,
          ),
          types: {},
          excludeAcceptAllOption: false,
        });
        const zipWriter = new ZipWriter(await fileHandle.createWritable());

        await Promise.all(
          this.pictures.map((p) => {
            const imgName = `${p.album}/IMG_${p.date.replaceAll(/[:\-]/g, "_")}${p.name.slice(p.name.lastIndexOf("."))}`;
            return zipWriter.add(imgName, new HttpReader(p.full_size_url), {
              level: 9,
              lastModDate: new Date(p.date),
              onstart: incrementProgressBar,
            });
          }),
        );

        await zipWriter.close();
        this.isDownloading = false;
      },
    }));
  });
};