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Better Stats Bar (LeetCode)

Adds total questions per difficulty to the stats bar.

当前为 2019-01-02 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name            Better Stats Bar (LeetCode)
  3. // @description     Adds total questions per difficulty to the stats bar.
  4. // @namespace       https://greatest.deepsurf.us/en/users/128831-marvinyan
  5. // @match           https://leetcode.com/problemset/algorithms/
  6. // @grant           none
  7. // @require         https://greatest.deepsurf.us/scripts/374849-library-onelementready-es6/code/Library%20%7C%20onElementReady%20ES6.js?version=649483
  8. // @version 0.0.1.20190102075610
  9. // ==/UserScript==
  10. (() => {
  11.   const LC_ALGO_API = 'https://leetcode.com/api/problems/algorithms/';
  12.  
  13.   const getData = url =>
  14.     new Promise((resolve, reject) => {
  15.       const xhr = new XMLHttpRequest();
  16.  
  17.       xhr.open('GET', url, true);
  18.       xhr.onload = () => {
  19.         if (xhr.status >= 200 && xhr.status < 300) {
  20.           resolve(xhr.response);
  21.         } else {
  22.           reject({
  23.             status: xhr.status,
  24.             statusText: xhr.statusText
  25.           });
  26.         }
  27.       };
  28.       xhr.onerror = () => {
  29.         reject({
  30.           status: xhr.status,
  31.           statusText: xhr.statusText
  32.         });
  33.       };
  34.       xhr.send();
  35.     });
  36.  
  37.   const parseData = response => {
  38.     const counts = [0, 0, 0];
  39.     const questions = JSON.parse(response).stat_status_pairs;
  40.  
  41.     questions.forEach(q => {
  42.       counts[q.difficulty.level - 1]++;
  43.     });
  44.  
  45.     return counts;
  46.   };
  47.  
  48.   const updateStatsBar = counts => {
  49.     const statsBar = $('#welcome > span > span');
  50.  
  51.     let $totalSolvedSpan = $(statsBar[0]).closest('span');
  52.     const newText = $totalSolvedSpan.text().replace('/', ' / ');
  53.     $totalSolvedSpan.text(newText);
  54.  
  55.     for (let i = 1; i < statsBar.length; i++) {
  56.       statsBar[i].append(` / ${counts[i - 1]}`);
  57.     }
  58.   };
  59.  
  60.   const run = async () => {
  61.     const data = await getData(LC_ALGO_API);
  62.     const counts = parseData(data);
  63.     updateStatsBar(counts);
  64.   };
  65.  
  66.   waitForKeyElements('#welcome', run);
  67. })();