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Bootta11 / npmjs_weekly_downloads

// ==UserScript==
// @name         npmjs_weekly_downloads
// @namespace    https://openuserjs.org/users/Bootta11
// @version      1.6
// @license MIT
// @description  Add weeklydownloads on npmjs search list.
// @author       Bootta11
// @match        https://www.npmjs.com/*
// @require https://code.jquery.com/jquery-3.3.1.min.js
// @copyright 2021, Bootta11 (https://openuserjs.org/users/Bootta11)
// @updateURL https://openuserjs.org/meta/Bootta11/npmjs_weekly_downloads.meta.js
// @grant       GM_xmlhttpRequest
// ==/UserScript==

(function () {
  let $ = window.jQuery;
  let foundPackageElements = $("#main section .items-end");
  let titles = $(foundPackageElements).find("h3").toArray().map(function (x) {
    return x.innerText;
  });

  function numberWithSpaces(x) {
    return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, " ");

  }

  function getPackageDataPromise(packageName) {
    return new Promise(function (resolve, reject) {
      GM_xmlhttpRequest({
        method: "GET",
        url: "https://api.npmjs.org/downloads/point/last-week/" + packageName,
        onload: function (response) {
          const json = JSON.parse(response.response);
          resolve(json);
        }
      });
    });

  }

  function getPackagesData(titles) {
    const promises = [];
    titles.forEach(function (t) {
      promises.push(getPackageDataPromise(t));
    });

    return Promise.all(promises);
  }

  function addWeeklyDownloads(packagesData) {
    const keyedData = [];

    packagesData.forEach(function (item) {
      keyedData[item.package] = item;
    });

    foundPackageElements.each(function () {
      const h3TitleElement = $(this).find("h3")[0];
      const title = $(this).find("h3")[0].innerText;
      const url = $(this).find("a")[0].href;

      const downloadsWeeklyCount = keyedData[title] && keyedData[title].downloads ? keyedData[title].downloads : 0;
      $(h3TitleElement).parent().parent().append("<span style='margin-left: auto' class='npmjswdCount'>[" + numberWithSpaces(downloadsWeeklyCount) + "]</span>");
    });
  }

  function updatePackagesWeeklyDownloads(titles) {
    getPackagesData(titles).then(function (newPackagesData) {
      addWeeklyDownloads(newPackagesData);
    })
  }

  function refreshPackages() {
    foundPackageElements = $("#main section .items-end");

    let newTitles = $(foundPackageElements).find("h3").toArray().map(function (x) {
      return x.innerText;
    });

    if (titles.join(',') !== newTitles.join(',')) {
      $(".npmjswdCount").remove();
      updatePackagesWeeklyDownloads(newTitles);
    }

    titles = newTitles;
  }

  updatePackagesWeeklyDownloads(titles);

  setInterval(function () {
    refreshPackages();
  }, 1000);
})();