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CF-Predictor

This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.

当前为 2021-06-11 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         CF-Predictor
  3. // @version      1.3.1
  4. // @description  This extension predicts rating changes for Codeforces. It shows approximate deltas during and after the contest.
  5. // @author       Originally by WslF, Edited by ZZYSonny
  6. // @match        *://codeforces.com/contest/*/standings*
  7. // @match        *://codeforc.es/contest/*/standings*
  8. // @match        *://codeforces.ml/contest/*/standings*
  9. // @connect      cf-predictor-frontend.herokuapp.com
  10. // @connect      cf-predictor.herokuapp.com
  11. // @grant        GM_xmlhttpRequest
  12. // @namespace    https://greasyfork.org/users/169007
  13. // ==/UserScript==
  14.  
  15. (function() {
  16.     'use strict';
  17.     var partyNum = 0;
  18.     var results = [];
  19. 	showDeltas();
  20.  
  21.     function modifyPartyHtml(index, elem) {
  22.         var delta = '?';
  23.         var rank = ' ';
  24.         var seed = ' ';
  25.  
  26.         if (partyNum > 0) {
  27.             var handle = $(elem).find("td:eq(1)").find("a").last().html();
  28.             if (handle) {
  29.                 //next 2 lines - fix for legendary grandmaster
  30.                 handle = handle.replace('<span class="legendary-user-first-letter">','');
  31.                 handle = handle.replace('</span>','');
  32.                 if (handle in results) {
  33.                     delta = results[handle].delta;
  34.                     rank = results[handle].rank;
  35.                     seed = results[handle].seed;
  36.                 }
  37.             }
  38.         }
  39.  
  40.         var darkClass = "";
  41.         if (partyNum % 2 == 1) {
  42.             darkClass = "dark ";
  43.         }
  44.         var text;
  45.         if (partyNum == 0) {
  46.             text = "<th class='top right' style='width: 4em;'><span title='Rating change''>&Delta;</span></th>";
  47.         } else {
  48.             if (delta > 0) {
  49.                 text = "<td class='" + darkClass + "right'><span style='color:green;font-weight:bold;'>+" + delta + "</span></td>";
  50.             } else {
  51.                 text = "<td class='" + darkClass + "right'><span style='color:gray;font-weight:bold;'>" + delta + "</span></td>";
  52.             }
  53.         }
  54.  
  55.         partyNum++;
  56.         $(elem).append(text);
  57.         /*
  58.         text = "<td class='" + darkClass + "right'><span style='color:green;'>" + rank + "</span></td>";
  59.         $(elem).append(text);
  60.         text = "<td class='" + darkClass + "right'><span style='color:green;'>" + seed + "</span></td>";
  61.         $(elem).append(text);
  62.         */
  63.     }
  64.  
  65.     function showDeltas() {
  66.         var count = $(".standings").find("tr").length;
  67.         if (count > 2) {
  68.             var contestId = document.location.href.replace(/\D+/ig, ',').substr(1).split(',')[0];
  69.             var contestants = document.getElementsByClassName("contestant-cell");
  70.             var contestantsHandles = Array.from(contestants).map(x => x.innerText.trim());
  71.  
  72.             getDeltas(contestId, contestantsHandles, function() {
  73.                 $(".standings").find("tr").first().find("th").last().removeClass("right");
  74.                 $(".standings").find("tr").find("td").removeClass("right");
  75.                 $(".standings").find("tr").each(modifyPartyHtml);
  76.                 if (count % 2 == 0) {
  77.                     $(".standings").find("tr").last().find("td").last().replaceWith("<td class='smaller bottom right dark'>&Delta;</td>");
  78.                 } else {
  79.                     $(".standings").find("tr").last().find("td").last().replaceWith("<td class='smaller bottom right'>&Delta;</td>");
  80.                 }
  81.             });
  82.         }
  83.     }
  84.  
  85.     function parseDeltas(data, callback) {
  86.         for (var i = 0; i < data.result.length; i++) {
  87.             var handle = data.result[i].handle;
  88.             var delta = data.result[i].newRating - data.result[i].oldRating;
  89.             var rank = data.result[i].rank;
  90.             var seed = data.result[i].seed;
  91.  
  92.             var res = {
  93.                 delta : parseInt(delta),
  94.                 seed : parseInt(seed),
  95.                 rank : parseInt(rank)
  96.             };
  97.  
  98.             results[handle] = res;
  99.         }
  100.  
  101.         callback();
  102.     }
  103.  
  104.     function getDeltas(contestId, contestantsHandles, callback) {
  105.         // var localServer = "http://localhost:8080/"
  106.         var herokuServerOld = "https://cf-predictor-frontend.herokuapp.com/";
  107.         var pageOld = "GetNextRatingServlet?contestId=" + contestId;
  108.         var serverOld = herokuServerOld + pageOld;
  109.  
  110.         var herokuServerNew = "https://cf-predictor.herokuapp.com/";
  111.         var pageNew = "GetPartialRatingChangesServlet?contestId=" + contestId + "&handles="+contestantsHandles.join(",");
  112.         var serverNew = herokuServerNew + pageNew;
  113.  
  114.         try{
  115.             GM_xmlhttpRequest({
  116.                 method: "GET",
  117.                 url: serverNew,
  118.                 onload: function(res) {
  119.                     var text = res.responseText;
  120.                     var data = JSON.parse(text);
  121.                     parseDeltas(data, callback);
  122.                 }
  123.             });    
  124.         }catch(err){
  125.             console.log(err);
  126.             try{
  127.                 GM_xmlhttpRequest({
  128.                     method: "GET",
  129.                     url: serverOld,
  130.                     onload: function(res) {
  131.                         var text = res.responseText;
  132.                         var data = JSON.parse(text);
  133.                         parseDeltas(data, callback);
  134.                     }
  135.                 });    
  136.             }catch(err){
  137.                 console.log(err);   
  138.             }    
  139.         }
  140.     }
  141. })();