check-rurubu.js

/*
  https://takapiro99.github.io/2021/rurubu-fuyuwari-coupon のコード
*/

// puppeteer, axios, form-data を npm で入れる

// 下記を crontab に登録して 10 分ごとに実行した
// */10 * * * * cd /home/takapiro/rurubu-scraper; /usr/local/bin/node ./main.js >> /home/takapiro/cron.log 2>&1

const { default: axios } = require("axios");
const puppeteer = require("puppeteer");
const FormData = require("form-data");
const fs = require("fs");

const sendMessage = async (imagePath) => {
  const url = process.env.DISCORD_WEBHOOK_URL;
  const data = new FormData();
  data.append("image", fs.createReadStream(imagePath));
  data.append(
    "payload_json",
    JSON.stringify({
      content: imagePath.startsWith("./yes")
        ? "クーポンがあるよ！"
        : "冬割クーポン情報",
    })
  );
  try {
    await axios.post(url, data, {
      headers: {
        ...data.getHeaders(),
      },
    });
  } catch (e) {
    console.log(e.toString());
  }
};

(async function () {
  const browser = await puppeteer.launch({
    headless: true,
    args: ["--no-sandbox"],
  });
  const page = await browser.newPage();
  await page.goto("https://www.rurubu.travel/deals", {
    waitUntil: "load",
  });
  await page.waitForSelector(".container");
  await page.waitForTimeout(2000);

  const boundingClientRect = await page.evaluate(async () => {
    const sleep = (msec) => new Promise((resolve) => setTimeout(resolve, msec));
    const couponCardSelector = ".CouponsGroupCard__title";
    const popupSelector = `[data-selenium="coupons-popup"]`;
    const couponAvailableSelector = `[data-selenium="coupon-card-popup-available"]`;
    const targetCardElement = Array.from(document.querySelectorAll(couponCardSelector)).filter((ele) => ele.textContent.startsWith("【さぁ！サッポロ冬割】"))[0];
    if (targetCardElement) {
      targetCardElement.parentElement.parentElement.click();
      await sleep(1000);
      const popupElement = document.querySelector(popupSelector);
      const isCouponAvailable = popupElement.querySelector(couponAvailableSelector);
      const t = popupElement.getBoundingClientRect();
      return {
        result: !!isCouponAvailable,
        x: t.left,
        y: t.top,
        width: t.width,
        height: t.height,
      };
    }
    return {
      result: "no",
    };
  });
  await page.waitForTimeout(2000);

  if (boundingClientRect.result === "no") {
    console.log("キャンペーンおわり");
  } else if (boundingClientRect.result) {
    console.log("yes!");
    await page.screenshot({ path: "yes.png", clip: boundingClientRect });
    await sendMessage("./yes.png");
  } else {
    console.log("sold out");
    await page.screenshot({ path: "out.png", clip: boundingClientRect });
    // await sendMessage("./out.png");
  }
  await browser.close();
})();