Better Stats Bar (LeetCode)

Adds total questions per difficulty to the stats bar.
Verze ze dne 02. 01. 2019. Zobrazit nejnovější verzi.
Zeptejte se na otázku, přidejte recenzi nebo skript nahlašte.
Wrap lines
// ==UserScript==
// @name            Better Stats Bar (LeetCode)
// @description     Adds total questions per difficulty to the stats bar.
// @namespace       https://greasyfork.org/en/users/128831-marvinyan
// @match           https://leetcode.com/problemset/algorithms/
// @grant           none
// @require         https://greasyfork.org/scripts/374849-library-onelementready-es6/code/Library%20%7C%20onElementReady%20ES6.js?version=649483
// @version 0.0.1.20190102075610
// ==/UserScript==
(() => {
  const LC_ALGO_API = 'https://leetcode.com/api/problems/algorithms/';

  const getData = url =>
    new Promise((resolve, reject) => {
      const xhr = new XMLHttpRequest();

      xhr.open('GET', url, true);
      xhr.onload = () => {
        if (xhr.status >= 200 && xhr.status < 300) {
          resolve(xhr.response);
        } else {
          reject({
            status: xhr.status,
            statusText: xhr.statusText
          });
        }
      };
      xhr.onerror = () => {
        reject({
          status: xhr.status,
          statusText: xhr.statusText
        });
      };
      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(LC_ALGO_API);
    const counts = parseData(data);
    updateStatsBar(counts);
  };

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