Better Statsbar (LeetCode)

Show the total number of questions per difficulty in LeetCode's statsbar.
Verze ze dne 10. 01. 2019. Zobrazit nejnovější verzi.
Zeptejte se na otázku, přidejte recenzi nebo skript nahlašte.
Wrap lines
// ==UserScript==
// @name            Better Statsbar (LeetCode)
// @description     Show the total number of questions per difficulty in LeetCode's statsbar.
// @namespace       https://greatest.deepsurf.us/en/users/128831-marvinyan
// @match           https://leetcode.com/problemset/*
// @grant           GM.getValue
// @grant           GM.setValue
// @grant           GM_getValue
// @grant           GM_setValue
// @require         https://greasemonkey.github.io/gm4-polyfill/gm4-polyfill.js
// @require         https://greatest.deepsurf.us/scripts/374849-library-onelementready-es6/code/Library%20%7C%20onElementReady%20ES6.js?version=649483
// @version 0.0.1.20190110053516
// ==/UserScript==

(() => {
  const BASE_URL_LC = 'https://leetcode.com/api/problems/';
  const CACHE_DURATION_MS = 0 * 1000; // Optional rate limit (default: 0s)
  const CURRENT_TIME_MS = new Date().getTime();

  const getData = async () => {
    const problemCategory = window.location.pathname.split('/')[2];
    const url = BASE_URL_LC + problemCategory;

    const lastCheck = await GM.getValue('lastCheck', Number.MAX_VALUE);
    const cachedJsonStr = await GM.getValue('cachedJsonStr', null);
    const timeSinceCheck = CURRENT_TIME_MS - lastCheck;

    return new Promise(resolve => {
      if (timeSinceCheck < CACHE_DURATION_MS && cachedJsonStr !== null) {
        resolve(cachedJsonStr);
      } else {
        const xhr = new XMLHttpRequest();
        xhr.open('GET', url, true);
        xhr.onload = () => {
          if (xhr.status >= 200 && xhr.status < 300) {
            GM.setValue('lastCheck', CURRENT_TIME_MS);
            GM.setValue('cachedJsonStr', xhr.responseText);
            resolve(xhr.responseText);
          }
        };
        xhr.send();
      }
    });
  };

  const parseData = response => {
    const counts = [0, 0, 0];
    const questions = JSON.parse(response).stat_status_pairs;

    questions.forEach(q => {
      counts[q.difficulty.level - 1]++;
    });

    return counts;
  };

  const updateStatsBar = counts => {
    const statsBar = $('#welcome > span > span');

    let $totalSolvedSpan = $(statsBar[0]).closest('span');
    const newText = $totalSolvedSpan.text().replace('/', ' / ');
    $totalSolvedSpan.text(newText);

    for (let i = 1; i < statsBar.length; i++) {
      statsBar[i].append(` / ${counts[i - 1]}`);
    }
  };

  const run = async () => {
    const data = await getData();
    const counts = parseData(data);
    updateStatsBar(counts);
  };

  waitForKeyElements('#welcome', run);
})();