xkcd Comics

version: 1.0.0
name: xkcd Comics
description: Latest comics from xkcd
author: codytseng
author_url: https://github.com/codytseng
category: Entertainment
tags:
  - comics
  - humor
  - science

import type { GlancewayAPI, SourceMethods } from "../../types";

export default (api: GlancewayAPI): SourceMethods => {
  return {
    async refresh() {
      type Comic = {
        num: number;
        title: string;
        alt: string;
        img: string;
        year: string;
        month: string;
        day: string;
      };

      const latestRes = await api.fetch<Comic>(
        "https://xkcd.com/info.0.json",
      );

      if (!latestRes.ok || !latestRes.json) {
        return;
      }

      const latest = latestRes.json;
      const count = 20;
      const comics: Comic[] = [latest];

      await Promise.all(
        Array.from({ length: count - 1 }, (_, i) => latest.num - i - 1)
          .filter((num) => num > 0 && num !== 404)
          .map(async (num) => {
            const res = await api.fetch<Comic>(
              `https://xkcd.com/${num}/info.0.json`,
            );
            if (res.ok && res.json) {
              comics.push(res.json);
              api.emit(
                comics.map((c) => ({
                  id: c.num.toString(),
                  title: `#${c.num}: ${c.title}`,
                  subtitle: c.alt,
                  url: `https://xkcd.com/${c.num}/`,
                  timestamp: `${c.year}-${c.month.padStart(2, "0")}-${c.day.padStart(2, "0")}`,
                })),
              );
            }
          }),
      );
    },
  };
};