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Add 'export to lichess' link to chessgames.com pages

Allows a user to quickly export a PGN to lichess for analysis

当前为 2021-11-19 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Add 'export to lichess' link to chessgames.com pages
  3. // @namespace    http://tampermonkey.net/
  4. // @version      0.1
  5. // @description  Allows a user to quickly export a PGN to lichess for analysis
  6. // @author       UncleVinny
  7. // @include      https://www.chessgames.com/perl/chessgame?gid=*
  8. // @grant        none
  9. // @license      MIT
  10. // ==/UserScript==
  11.  
  12. // Note: this script tweaks the original by bfishbaum, found here:
  13. // https://greasyfork.org/en/scripts/389928-lichess-analysis-link-on-chessbase
  14.  
  15. (function() {
  16.     'use strict';
  17.     const LICHESS_ANALYSIS = "https://lichess.org/paste";
  18.     
  19.     function getElementByXpath(path) {
  20.         return document.evaluate(path, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
  21.     }
  22.  
  23.     function buildPGNLink() {
  24.         var url = new URL(window.location.href);
  25.         var gid = url.searchParams.get("gid");
  26.         var link = "https://www.chessgames.com/perl/nph-chesspgn?text=1&gid=" + gid;
  27.         return link;
  28.     }
  29.  
  30.     function buildLichessLink(callback) {
  31.         var pgnLink = buildPGNLink();
  32.         fetch(pgnLink).then(function(response) {
  33.             response.text().then(function(body){
  34.                 var lichessLink = document.createElement("a");
  35.                 lichessLink.href = LICHESS_ANALYSIS + "?pgn="+cleanPGN(body);
  36.                 lichessLink.target = "_blank";
  37.                 lichessLink.text = "export to lichess.org";
  38.                 lichessLink.style.font = 'bold 12px verdana,arial,helvetica';
  39.                 lichessLink.style.color = '#4D4D4D'; // lichess grey!
  40.                 callback(lichessLink);
  41.             });
  42.         });
  43.     }
  44.  
  45.     function cleanPGN(pgn) {
  46.         var newPGN = pgn.split("\n");
  47.         newPGN = newPGN.join(" ");
  48.         return newPGN;
  49.     }
  50.  
  51.     function addLichessLink(link) {
  52.         // link is added below the "Get this game explained" advertisement
  53.         var block = getElementByXpath("//html/body/center[2]/div");
  54.         block.parentNode.insertBefore(link, block.nextSibling);
  55.     }
  56.  
  57.     buildLichessLink(addLichessLink);
  58.  
  59. })();