// ==UserScript==
// @name           KG_CalculatePreciseSpeed
// @version        0.1.1
// @namespace      klavogonki
// @author         ASplayer9119
// @description    Показывает скорость в результах заезда до сотых
// @license        MIT
// @match          http*://klavogonki.ru/g/*
// @grant          none
// ==/UserScript==

(function() {
  'use strict';

  const proxied = window.XMLHttpRequest.prototype.send;

  let gameBeginTime;
  let textLength;
  let isMarathon = false;

  const alreadyUpdatedPlayers = {};

  window.XMLHttpRequest.prototype.send = function () {
    this.addEventListener('load', function () {
        try {
          const json = JSON.parse(this.responseText);

          if(json.params?.gametype == 'marathon') {
            isMarathon = true;
          }

          if ('begintime' in json) {
            gameBeginTime = json.begintime * 1000;
          }

          if ('charsTotal' in json) {
            textLength = json.charsTotal;
          }

          if ('players' in json) {
            json.players.forEach(({id, finished, charsTotal}) => {
              if (finished) {
                if (isMarathon) {
                  textLength = charsTotal;
                }

                updateSpeed(id, finished);
              }
            });
          }
        } catch (e) {}
    }.bind(this));
    return proxied.apply(this, [].slice.call(arguments));
  };

  function updateSpeed(idInGame, finishedTime) {
    if (!gameBeginTime || !textLength || !finishedTime || alreadyUpdatedPlayers[idInGame]) {
      return;
    }

    const exactSpeed = textLength / (finishedTime - gameBeginTime) * 1000 * 60;
    const roundedToWholeSpeed = Math.round(exactSpeed);

    const playerStatsContainer = document.getElementById('stats' + idInGame);
    const speedContainer = playerStatsContainer.getElementsByTagName('div')[1];
    const speedSpanContainer = speedContainer.getElementsByTagName('span')[0];
    const speedSpan = speedSpanContainer.getElementsByTagName('span')[0];

    if (speedSpan.textContent == roundedToWholeSpeed) {
      const roundedToHundredthSpeed = exactSpeed.toFixed(2);
      const decimalStartsIdx = roundedToHundredthSpeed.indexOf('.');
      const wholeNumber = roundedToHundredthSpeed.slice(0, decimalStartsIdx);
      const decimals = roundedToHundredthSpeed.slice(decimalStartsIdx + 1);

      playerStatsContainer.style.left = '142px';
      speedContainer.style.marginRight = '18px';
      speedSpan.innerHTML = `${wholeNumber}<span style="font-size:0.6em">.${decimals}</span>`;

      alreadyUpdatedPlayers[idInGame] = true;
    }
  }
})();