Cloudflare worker to get random picture from Pixiv (powered by HibiAPI)

pixiv-illust-worker.js

addEventListener("fetch", (event) => {
  event.respondWith(
    handleRequest(event.request).catch(
      (err) =>
        new Response(err.stack, {
          status: 500,
        })
    )
  );
});

/**
 * @param {Array} list
 */
function randomChoice(list) {
  return list[Math.floor(Math.random() * list.length)];
}

/**
 * @param {RequestInfo} input
 * @param {RequestInit} init
 * @returns {any}
 */
async function requestJson(input, init) {
  const response = await fetch(input, init);
  return response.json();
}

/**
 * @param {Number} id
 * @returns {Promise<Response>}
 */
async function getImage(id) {
  const data = await requestJson(
    `https://api.obfs.dev/api/pixiv/illust?id=${id}`,
    {
      headers: { "Cache-Control": "no-store" },
    }
  );

  const illust = data.illust;

  const image = !!illust.meta_pages.length
    ? randomChoice(illust.meta_pages).image_urls.original
    : illust.meta_single_page.original_image_url;

  return fetch(image, {
    headers: {
      Referer: "https://www.pixiv.net",
    },
  });
}

/**
 * @param {URLSearchParams} params
 * @returns {Promise<Response>}
 **/
async function rankImage(params) {
  const data = await requestJson(
    `https://api.obfs.dev/api/pixiv/rank?` + params.toString(),
    {
      headers: {
        "Cache-Control": "no-store",
      },
    }
  );

  const illust = randomChoice(data.illusts);

  const image = !!illust.meta_pages.length
    ? randomChoice(illust.meta_pages).image_urls.original
    : illust.meta_single_page.original_image_url;

  return fetch(image, {
    headers: {
      Referer: "https://www.pixiv.net",
    },
  });
}

/**
 * @param {Date} date
 * @returns {String}
 */
function formatDate(date) {
  var d = new Date(date),
    month = "" + (d.getMonth() + 1),
    day = "" + d.getDate(),
    year = d.getFullYear();

  if (month.length < 2) month = "0" + month;
  if (day.length < 2) day = "0" + day;

  return [year, month, day].join("-");
}

/**
 * @param {Request} request
 * @returns {Promise<Response>}
 */
async function handleRequest(request) {
  const url = new URL(request.url);
  const reg = /\/(?<id>\d+)\/?/;

  switch (url.pathname) {
    case "/":
      if (!url.searchParams.has("mode")) {
        url.searchParams.set("mode", randomChoice(["day", "week", "month"]));
      }
      if (!url.searchParams.has("date")) {
        const date = new Date();
        date.setDate(date.getDate() - Math.ceil(Math.random() * 365 * 2));
        url.searchParams.set("date", formatDate(date));
      }
      return rankImage(url.searchParams);
    case "/teapot":
      return new Response("I'm a teapot", { status: 418 });
    case "/favicon.ico":
      return fetch("https://www.google.com/favicon.ico");
    default:
      if (reg.exec(url.pathname)) {
        const { id } = reg.exec(url.pathname).groups;
        return getImage(id);
      }
      return new Response(`Not Found: ${request.url}`, { status: 404 });
  }
}

pixiv-illust.md

Pixiv图片获取

一个Cloudflare Worker用来获取Pixiv图片, 基于HibiAPI

演示站点

---

使用方法

随机排行榜图片

• URL: /
  • 直接请求即可
  • 支持附加请求参数, 请参考此处

获取指定ID图片

• URL: /<图片ID>
  • 直接请求即可