let wordsList = [];
let currentWordIndex = 0;
let inputHistory = [];
let currentInput = "";
let time = 0;
let timers = [];
let testActive = false;
let testStart, testEnd;
let wpmHistory = [];
let rawHistory = [];
let restartCount = 0;
let currentTestLine = 0;
let pageTransition = false;
let keypressPerSecond = [];
let currentKeypressCount = 0;
let afkDetected = false;
let errorsPerSecond = [];
let currentErrorCount = 0;
let resultVisible = false;
let activeWordTopBeforeJump = 0;
let activeWordTop = 0;
let activeWordJumped = false;

let accuracyStats = {
  correct: 0,
  incorrect: 0
}

let customText = "The quick brown fox jumps over the lazy dog";

function showNotification(text, time) {
  let noti = $(".notification");
  noti.text(text);
  noti.css('top', `-${noti.outerHeight()}px`);
  noti.stop(true, true).animate({
    top: "1rem"
  }, 250, 'swing', () => {
    noti.stop(true, true).animate({
      opacity: 1
    }, time, () => {
      noti.stop(true, true).animate({
        top: `-${noti.outerHeight()}px`
      }, 250, 'swing');
    })
  });
}

function copyResultToClipboard() {
  let src = $('#middle');
  var sourceX = src.position().left;/*X position from div#target*/
  var sourceY = src.position().top;/*Y position from div#target*/
  var sourceWidth = src.width();/*clientWidth/offsetWidth from div#target*/
  var sourceHeight = src.height();/*clientHeight/offsetHeight from div#target*/

  let bgColor = getComputedStyle(document.body).getPropertyValue('--bg-color').replace(' ', '');

  html2canvas(document.body,{
    backgroundColor: bgColor,
    height: sourceHeight + 50,
    width: sourceWidth + 50,
    x: sourceX - 25,
    y: sourceY - 25
  }).then(function(canvas) {
    // document.body.appendChild(canvas);
    canvas.toBlob(function(blob) {
      navigator.clipboard
        .write([
          new ClipboardItem(
            Object.defineProperty({}, blob.type, {
              value: blob,
              enumerable: true
            })
          )
        ])
    });
    showNotification('Copied to clipboard',1000);
  });
}

function getReleasesFromGitHub() {
  $.getJSON("https://api.github.com/repos/Miodec/monkey-type/releases", data => {
    $('#bottom .version').text(data[0].name).css('opacity', 1);
    $("#versionHistory .releases").empty();
    data.forEach(release => {
      if (!release.draft && !release.prerelease) {
        $("#versionHistory .releases").append(`
          <div class="release">
            <div class="title">${release.name}</div>
            <div class="date">${moment(release.published_at).format('DD MMM YYYY')}</div>
            <div class="body">${release.body.replace(/\r\n/g, '<br>')}</div>
          </div>
        `);
      }
    })
  })
}

function getLastChar(word) {
  return word.charAt(word.length - 1);
}

function setFocus(foc) {
  if (foc) {
    // focus = true;
    stopCaretAnimation();
    $("#top").addClass("focus");
    $("#bottom").addClass("focus");
    $("body").css("cursor", "none");
  } else {
    startCaretAnimation();
    $("#top").removeClass("focus");
    $("#bottom").removeClass("focus");
    $("body").css("cursor", "default");
  }
}

function capitalizeFirstLetter(str) {
  return str.charAt(0).toUpperCase() + str.slice(1);
}

function roundedToFixed(float, digits){
  let rounded = Math.pow(10, digits);
  return (Math.round(float * rounded) / rounded).toFixed(digits);
}

function initWords() {
  testActive = false;
  wordsList = [];
  currentWordIndex = 0;
  accuracyStats = {
    correct: 0,
    incorrect: 0
  }
  inputHistory = [];
  currentInput = "";

  let language = words[config.language];

  if (language == undefined || language == []) {
    config.language = "english";
    language = words[config.language];
  }

  if (config.mode == "time" || config.mode == "words") {

    let wordsBound = config.mode == "time" ? 60 : config.words;
    for (let i = 0; i < wordsBound; i++) {
      randomWord = language[Math.floor(Math.random() * language.length)];
      previousWord = wordsList[i - 1];
      while (randomWord == previousWord || (!config.punctuation && randomWord == "I") || randomWord.indexOf(' ') > -1) {
        randomWord = language[Math.floor(Math.random() * language.length)];
      }
      if (config.punctuation && config.mode != "custom"){
        randomWord = punctuateWord(previousWord, randomWord, i, wordsBound);
      }
      wordsList.push(randomWord);
    }

  } else if (config.mode == "custom") {
    let w = customText.split(" ");
    for (let i = 0; i < w.length; i++) {
      wordsList.push(w[i]);
    }
  }
  showWords();
}

function emulateLayout(event){
  if (config.layout == "default")
    return event;
  const qwertyMasterLayout = {"Backquote":"`~","Digit1":"1!","Digit2":"2@","Digit3":"3#","Digit4":"4$","Digit5":"5%","Digit6":"6^","Digit7":"7&","Digit8":"8*","Digit9":"9(","Digit0":"0)","Minus":"-_","Equal":"=+","KeyQ":"qQ","KeyW":"wW","KeyE":"eE","KeyR":"rR","KeyT":"tT","KeyY":"yY","KeyU":"uU","KeyI":"iI","KeyO":"oO","KeyP":"pP","BracketLeft":"[{","BracketRight":"]}","KeyA":"aA","KeyS":"sS","KeyD":"dD","KeyF":"fF","KeyG":"gG","KeyH":"hH","KeyJ":"jJ","KeyK":"kK","KeyL":"lL","Semicolon":";:","Quote":"'\"","Backslash":"\\|","KeyZ":"zZ","KeyX":"xX","KeyC":"cC","KeyV":"vV","KeyB":"bB","KeyN":"nN","KeyM":"mM","Comma":",<","Period":".>","Slash":"/?","Space":"  "}
  let layoutMap = layouts[config.layout];
  let qwertyMap = layouts["qwerty"];

  let qwertyKey = qwertyMasterLayout[event.code];
  let mapIndex;
  let newKey;
  let shift = event.shiftKey ? 1 : 0;
  for (let i = 0; i < qwertyMap.length; i++) {
    const key = qwertyMap[i];
    let keyIndex = key.indexOf(qwertyKey);
    if (keyIndex != -1){
      mapIndex = i;
    }
  }
  if (!shift && /[A-Z]/gm.test(event.key)){
    shift = 1;
  }
  newKey = layoutMap[mapIndex][shift];
  event.keyCode = newKey.charCodeAt(0);
  event.charCode = newKey.charCodeAt(0);
  event.which = newKey.charCodeAt(0);
  event.key = newKey;
  return event;
}

function punctuateWord(previousWord, currentWord, index, maxindex){

  let word = currentWord;

  if (index == 0 || getLastChar(previousWord) == "." || getLastChar(previousWord) == "?" || getLastChar(previousWord) == "!") {
    //always capitalise the first word or if there was a dot
    word = capitalizeFirstLetter(word);
  } else if (
    //10% chance to end a sentence
    (Math.random() < 0.1 && getLastChar(previousWord) != "." && index != maxindex - 2) || index == maxindex - 1) {
    let rand = Math.random();
    if (rand <= 0.8) {
      word += ".";
    } else if (rand > .8 && rand < .9){
      word += "?";
    } else {
      word += "!";
    }
  } else if (Math.random() < 0.01 &&
    getLastChar(previousWord) != "," &&
    getLastChar(previousWord) != ".") {
    //1% chance to add quotes
    word = `"${word}"`;
  } else if (Math.random() < 0.01) {
    //1% chance to add a colon
    word = word + ":";
  } else if (
    Math.random() < 0.01 &&
    getLastChar(previousWord) != "," &&
    getLastChar(previousWord) != "." &&
    previousWord != "-"
  ) {
    //1% chance to add a dash
    word = "-";
  } else if (
    Math.random() < 0.2 &&
    getLastChar(previousWord) != ","
  ) {
    //2% chance to add a comma
    word += ",";
  }
  return word;

}

function addWord() {
  let language = words[config.language];
  let randomWord = language[Math.floor(Math.random() * language.length)];
  previousWord = wordsList[wordsList.length - 1];
  previousWordStripped = previousWord.replace(/[.?!":\-,]/g,'').toLowerCase();
  while (previousWordStripped == randomWord || randomWord.indexOf(' ') > -1 || (!config.punctuation && randomWord == "I")) {
    randomWord = language[Math.floor(Math.random() * language.length)];
  }
  if (config.punctuation && config.mode != "custom"){
    randomWord = punctuateWord(previousWord, randomWord, wordsList.length, 0)
  }
  wordsList.push(randomWord);

  let w = "<div class='word'>";
  for (let c = 0; c < randomWord.length; c++) {
    w += "<letter>" + randomWord.charAt(c) + "</letter>";
  }
  w += "</div>";
  $("#words").append(w);
}

function showWords() {
  $("#words").empty();
  if (config.mode == "words" || config.mode == "custom") {
    $("#words").css("height", "auto");
    for (let i = 0; i < wordsList.length; i++) {
      let w = "<div class='word'>";
      for (let c = 0; c < wordsList[i].length; c++) {
        w += "<letter>" + wordsList[i].charAt(c) + "</letter>";
      }
      w += "</div>";
      $("#words").append(w);
    }
  } else if (config.mode == "time") {
    for (let i = 0; i < wordsList.length; i++) {
      let w = "<div class='word'>";
      for (let c = 0; c < wordsList[i].length; c++) {
        w += "<letter>" + wordsList[i].charAt(c) + "</letter>";
      }
      w += "</div>";
      $("#words").append(w);
    }
    $("#words").removeClass('hidden');
    const wordHeight = $($(".word")[0]).outerHeight(true);
    $("#words").css("height", wordHeight * 3 + 'px').css("overflow", "hidden");
  }
  updateActiveElement();
  updateCaretPosition();
}

function updateActiveElement() {
  $("#words .word").removeClass("active");
  $($("#words .word")[currentWordIndex])
    .addClass("active")
    .removeClass("error");
  activeWordTop = $("#words .word.active").position().top;
}

function compareInput(wrdIndex,input,showError) {
  $($('#words .word')[wrdIndex]).empty();
  let ret = "";
  let currentWord = wordsList[wrdIndex];
  for (let i = 0; i < input.length; i++) {
    if (currentWord[i] == input[i]) {
      ret += '<letter class="correct">' + currentWord[i] + "</letter>";
      // $(letterElems[i]).removeClass('incorrect').addClass('correct');
    } else {
      if(config.difficulty == "master"){
        if(!resultVisible) showResult(true);
        restartCount++;
      }
      if(!showError){
        if (currentWord[i] == undefined) {
          // ret += '<letter class="correct">' + input[i] + "</letter>";
        } else {
          ret += '<letter class="correct">' + currentWord[i] + "</letter>";
        }
      }else{
        if (currentWord[i] == undefined) {
          ret += '<letter class="incorrect extra">' + input[i] + "</letter>";
        } else {
          ret += '<letter class="incorrect">' + currentWord[i] + "</letter>";
        }
      }
    }
  }
  if (input.length < currentWord.length) {
    for (let i = input.length; i < currentWord.length; i++) {
      ret += "<letter>" + currentWord[i] + "</letter>";
    }
  }
  $($('#words .word')[wrdIndex]).html(ret);
  if ((currentWord == input || (config.quickEnd && currentWord.length == input.length)) && wrdIndex == wordsList.length - 1) {
    inputHistory.push(input);
    currentInput = "";
    if(!resultVisible) showResult();
  }
  // liveWPM()
}

function highlightBadWord(index,showError) {
  if(!showError) return;
  $($("#words .word")[index]).addClass("error");
}

function showTimer() {
  if (!config.showTimerBar) return;
  $("#timerWrapper").css("opacity", 1);
}

function hideTimer() {
  $("#timerWrapper").css("opacity", 0);
}

function updateTimerBar() {
  let percent = ((time + 1) / config.time) * 100;
  $("#timer")
    .stop(true, true)
    .css("width", percent + "vw");
}


function hideCaret() {
  $("#caret").addClass("hidden");
}

function showCaret() {
  if($("#result").hasClass('hidden')){
    updateCaretPosition();
    $("#caret").removeClass("hidden");
    startCaretAnimation();
  }
}

function stopCaretAnimation() {
  $("#caret").css("animation-name", "none");
  $("#caret").css("opacity", "1");
}

function startCaretAnimation() {
  $("#caret").css("animation-name", "caretFlash");
}

function updateCaretPosition() {
  if ($("#words").hasClass('hidden')) return;
  let caret = $("#caret");
  let activeWord = $("#words .word.active");
  let inputLen = currentInput.length;
  let currentLetterIndex = inputLen - 1;
  if (currentLetterIndex == -1) {
    currentLetterIndex = 0;
  }
  let currentLetter = $($("#words .word.active letter")[currentLetterIndex]);
  if(currentLetter.length == 0) return;
  let currentLetterPos = currentLetter.position();
  let letterHeight = currentLetter.height();

  let newTop = 0;
  let newLeft = 0;

  newTop = currentLetterPos.top - letterHeight / 4;
  if (inputLen == 0) {
    // caret.css({
    //   top: currentLetterPos.top - letterHeight / 4,
    //   left: currentLetterPos.left - caret.width() / 2
    // });

    newLeft = currentLetterPos.left - caret.width() / 2;
  } else {
    // caret.css({
    //   top: currentLetterPos.top - letterHeight / 4,
    //   left: currentLetterPos.left + currentLetter.width() - caret.width() / 2
    // });
    newLeft = currentLetterPos.left + currentLetter.width() - caret.width() / 2;
  }

  let duration = 0;

  // if (config.smoothCaret && Math.round(caret.position().top) == Math.round(newTop)) {
  //   duration = 100;
  // }

  if (config.smoothCaret) {
    duration = 100;
    if (Math.round(caret.position().top) != Math.round(newTop)) {
      caret.css("top", newTop);
      duration = 10;
    }
  }

  caret.stop(true, true).animate({
    top: newTop,
    left: newLeft
  }, duration)

  let browserHeight = window.innerHeight;
  let middlePos = (browserHeight / 2) - $("#caret").outerHeight()/2;
  let contentHeight = document.body.scrollHeight;
  
  if (newTop >= middlePos &&  contentHeight > browserHeight) {
    window.scrollTo({
      left: 0,
      top: newTop - middlePos,
      behavior: 'smooth'
    })
  }

}

function countChars() {
  let correctWordChars = 0;
  let correctChars = 0;
  let incorrectChars = 0;
  let extraChars = 0;
  let missedChars = 0;
  let spaces = 0;
  for (let i = 0; i < inputHistory.length; i++) {
    if (inputHistory[i] == wordsList[i]) {
      //the word is correct
      correctWordChars += wordsList[i].length;
      correctChars += wordsList[i].length;
    } else if (inputHistory[i].length >= wordsList[i].length) {
      //too many chars
      for (let c = 0; c < inputHistory[i].length; c++) {
        if (c < wordsList[i].length) {
          //on char that still has a word list pair
          if (inputHistory[i][c] == wordsList[i][c]) {
            correctChars++;
          } else {
            incorrectChars++;
          }
        } else {
          //on char that is extra
          extraChars++;
        }
      }
    } else {
      //not enough chars
      for (let c = 0; c < wordsList[i].length; c++) {
        if (c < inputHistory[i].length) {
          //on char that still has a word list pair
          if (inputHistory[i][c] == wordsList[i][c]) {
            correctChars++;
          } else {
            incorrectChars++;
          }
        } else {
          //on char that is extra
          missedChars++;
        }
      }
    }
    if(i < inputHistory.length-1){
      spaces++;
    }
  }
  return {
    spaces: spaces,
    correctWordChars: correctWordChars,
    allCorrectChars: correctChars,
    incorrectChars: incorrectChars,
    extraChars: extraChars,
    missedChars: missedChars
  }
}

function roundTo2(num){
  return Math.round((num + Number.EPSILON) * 100) / 100
}

function calculateStats() {
  if (config.mode == "words" && config.difficulty == "normal") {
    if (inputHistory.length != wordsList.length) return;
  }
  let chars = countChars();

  let testNow = Date.now();
  let testSeconds = roundTo2((testNow - testStart) / 1000);
  let wpm = roundTo2(((chars.correctWordChars + chars.spaces) * (60 / testSeconds)) / 5);
  let wpmraw = roundTo2(((chars.allCorrectChars + chars.spaces + chars.incorrectChars + chars.extraChars) * (60/testSeconds))/5);
  let acc = roundTo2((accuracyStats.correct / (accuracyStats.correct + accuracyStats.incorrect)) * 100);
  return {
    wpm: wpm,
    wpmRaw: wpmraw,
    acc: acc,
    correctChars: chars.correctWordChars,
    incorrectChars: chars.incorrectChars + chars.extraChars + chars.missedChars,
    time: testSeconds,
    spaces: chars.spaces
  };
}

function hideCrown() {
  $("#result .stats .wpm .crownWrapper").css('opacity', 0);
}

function showCrown() {
  $("#result .stats .wpm .crownWrapper").delay(275).animate({
    opacity: 1
  }, 250,"easeOutCubic");
}

function showResult(difficultyFailed = false) {
  resultVisible=true;
  testEnd = Date.now();
  testActive = false;
  setFocus(false);
  hideCaret();
  hideLiveWpm();
  testInvalid = false;
  let stats = calculateStats();
  if(stats === undefined){
    stats = {
      wpm: 0,
      wpmRaw: 0,
      acc: 0,
      correctChars: 0,
      incorrectChars: 0,
      time: 0,
      spaces: 0
    }
  }
  clearIntervals();
  let testtime = roundedToFixed(stats.time,1);
  $("#result .stats .wpm .bottom").text(Math.round(stats.wpm));
  $("#result .stats .raw .bottom").text(Math.round(stats.wpmRaw));
  $("#result .stats .acc .bottom").text(Math.round(stats.acc) + "%");
  $("#result .stats .key .bottom").text(stats.correctChars + stats.spaces + "/" + stats.incorrectChars);
  $("#result .stats .time .bottom").text(testtime+'s');

  setTimeout(function() {
    $("#showWordHistoryButton").removeClass('hidden').css('opacity',1);
    $("#copyResultToClipboardButton").removeClass('hidden').css('opacity',1);
  }, 125);
  


  let mode2 = "";
  if (config.mode == "time") {
    mode2 = config.time;
    // $("#result .stats .time").addClass('hidden');
  } else if (config.mode == "words") {
    mode2 = config.words;
    // $("#result .stats .time").removeClass('hidden');
    // $("#result .stats .time .bottom").text(roundedToFixed(stats.time,1)+'s');
  }
  
  let pbVal = 0;

  if(difficultyFailed){
    showNotification("Test failed",3000);
  }else if(afkDetected){
    showNotification("Test invalid - AFK detected",3000);
  }else{
    let completedEvent = {
      wpm: stats.wpm,
      rawWpm: stats.wpmRaw,
      correctChars: stats.correctChars + stats.spaces,
      incorrectChars: stats.incorrectChars,
      acc: stats.acc,
      mode: config.mode,
      mode2: mode2,
      punctuation: config.punctuation,
      timestamp: Date.now(),
      language: config.language,
      restartCount: restartCount,
      difficulty: config.difficulty,
      testDuration: testtime,
      blindMode: config.blindMode,
      theme: config.theme
    };
    if(config.difficulty == "normal" || ((config.difficulty == "master" || config.difficulty == "expert") && !difficultyFailed)){
      restartCount = 0;
    }
    if (stats.wpm > 0 && stats.wpm < 350 && stats.acc > 50 && stats.acc <= 100) {
      if (firebase.auth().currentUser != null) {
        db_getUserHighestWpm(config.mode, mode2, config.punctuation, config.language, config.difficulty).then(data => {
          // console.log(`highest wpm for this mode is ${data}, current is ${stats.wpm}`);
          if (data < stats.wpm) {
            hideCrown();
            showCrown();
          }else{
            wpmOverTimeChart.options.annotation.annotations[0].value = data;
            wpmOverTimeChart.update();
          }
          completedEvent.uid = firebase.auth().currentUser.uid;
          try{
            firebase.analytics().logEvent('testCompleted', completedEvent);
          }catch(e){
            console.log("Analytics unavailable");
          }
          db_testCompleted(completedEvent);
          dbSnapshot.unshift(completedEvent);
        });
        $("#result .loginTip").addClass('hidden');
      } else {
        try{
          firebase.analytics().logEvent('testCompletedNoLogin', completedEvent);
        }catch(e){
          console.log("Analytics unavailable");
        }
        $("#result .loginTip").removeClass('hidden');

        // showNotification("Sign in to save your result",3000);
      }
    } else {
      showNotification("Test invalid", 3000);
      testInvalid = true;
      try{
        firebase.analytics().logEvent('testCompletedInvalid', completedEvent);
      }catch(e){
        console.log("Analytics unavailable");
      }
    }
  }


  let testType = "";


  testType += config.mode;
  if (config.mode == "time") {
    testType += " " + config.time
  } else if (config.mode == "words") {
    testType += " " + config.words
  }
  if(config.mode != "custom"){
    testType += "<br>" + config.language.replace('_', ' ');
  }
  if (config.punctuation) {
    testType += "<br>punctuation"
  }
  if (config.blindMode) {
    testType += "<br>blind"
  }
  if (config.difficulty == "expert") {
    testType += "<br>expert";
  }else if(config.difficulty == "master"){
    testType += "<br>master";
  }

  $("#result .stats .testType .bottom").html(testType);


  let otherText = "";
  if(difficultyFailed){
    otherText += "<br>failed"
  }
  if(afkDetected){
    otherText += "<br>afk detected"
  }
  if(testInvalid){
    otherText += "<br>invalid"
  }

  if(otherText == ""){
    $("#result .stats .info").addClass('hidden');
  }else{
    $("#result .stats .info").removeClass('hidden');
    otherText = otherText.substring(4);
    $("#result .stats .info .bottom").html(otherText); 
  }

  let labels = [];
  for (let i = 1; i <= wpmHistory.length; i++) {
    labels.push(i.toString());
  }

  let mainColor = getComputedStyle(document.body).getPropertyValue('--main-color').replace(' ', '');
  let subColor = getComputedStyle(document.body).getPropertyValue('--sub-color').replace(' ', '');
  let bgColor = getComputedStyle(document.body).getPropertyValue('--bg-color').replace(' ', '');


  wpmOverTimeChart.options.scales.xAxes[0].ticks.minor.fontColor = subColor;
  wpmOverTimeChart.options.scales.xAxes[0].scaleLabel.fontColor = subColor;
  wpmOverTimeChart.options.scales.yAxes[0].ticks.minor.fontColor = subColor;
  wpmOverTimeChart.options.scales.yAxes[2].ticks.minor.fontColor = subColor;
  wpmOverTimeChart.options.scales.yAxes[0].scaleLabel.fontColor = subColor;
  wpmOverTimeChart.options.scales.yAxes[2].scaleLabel.fontColor = subColor;

  wpmOverTimeChart.data.labels = labels;

  wpmOverTimeChart.data.datasets[0].borderColor = mainColor;
  wpmOverTimeChart.data.datasets[0].data = wpmHistory;
  wpmOverTimeChart.data.datasets[1].borderColor = subColor;
  wpmOverTimeChart.data.datasets[1].data = rawHistory;

  wpmOverTimeChart.options.annotation.annotations[0].borderColor = subColor;
  wpmOverTimeChart.options.annotation.annotations[0].label.backgroundColor = subColor;
  wpmOverTimeChart.options.annotation.annotations[0].label.fontColor = bgColor;
  


  let maxVal = 0;
  rawHistory.forEach(raw =>{
    if(raw >= maxVal){
      maxVal = raw;
    }
  })
  wpmOverTimeChart.options.scales.yAxes[0].ticks.max = maxVal;
  wpmOverTimeChart.options.scales.yAxes[1].ticks.max = maxVal;


  let errorsNoZero = [];

  for(let i = 0; i < errorsPerSecond.length; i++){
    // if(errorsPerSecond[i] != 0){
      errorsNoZero.push({
        x: i+1,
        y: errorsPerSecond[i]
      });
    // }
  }

  wpmOverTimeChart.data.datasets[2].data = errorsNoZero;



  wpmOverTimeChart.update({ duration: 0 });
  swapElements($("#words"),$("#result"),250, () => {

    if(config.blindMode){
      $.each($('#words .word'),(i,word)=>{
        let input = inputHistory[i];
        if(input == undefined) input = currentInput;
        compareInput(i,input,true);
        if(inputHistory[i] != wordsList[i]){
          highlightBadWord(i,true);
        }
      })
    }


    let remove = false;
    $.each($('#words .word'),(i,obj)=>{
      if(remove){
        $(obj).remove();
      }else{
        $(obj).removeClass('hidden');
        if($(obj).hasClass('active')) remove = true;
      }
    });
  });
}

function restartTest() {
  clearIntervals();
  time = 0;
  afkDetected = false;
  wpmHistory = [];
  rawHistory = [];
  setFocus(false);
  hideCaret();
  testActive = false;
  hideLiveWpm();
  keypressPerSecond = [];
  currentKeypressCount = 0;
  errorsPerSecond = [];
  currentErrorCount = 0;
  currentTestLine = 0;
  let el = null;
  if(resultVisible){
    //results are being displayed
    el = $("#result");
  }else{
    //words are being displayed
    el = $("#words");
  }

  if(resultVisible){
    $("#words").stop(true, true).animate({
      opacity: 0
    }, 125);
    $("#wordsTitle").stop(true,true).animate({
      opacity: 0
    }, 125, ()=>{
      $("#wordsTitle").slideUp(0);
    });
    $("#showWordHistoryButton").stop(true,true).animate({
      opacity: 0
    }, 125, ()=>{
      $("#showWordHistoryButton").addClass('hidden');
    });
    $("#copyResultToClipboardButton").stop(true,true).animate({
      opacity: 0
    }, 125, ()=>{
      $("#copyResultToClipboardButton").addClass('hidden');
    });
  }
  resultVisible = false;

  el.stop(true, true).animate({
    opacity: 0
  }, 125, () => {
    initWords();
    $("#result").addClass('hidden');
    $("#words").css('opacity', 0).removeClass('hidden').stop(true, true).animate({
      opacity: 1
    }, 125, () => {
      hideCrown();
      clearIntervals();
      $("#restartTestButton").css('opacity', 1);
      if ($("#commandLineWrapper").hasClass('hidden')) focusWords();
      hideTimer();
      setTimeout(function() {
        $("#timer")
          .css("transition", "none")
          .css("width", "0vw")
          .stop(true, true)
          .animate({ top: 0 }, 0, () => {
            $("#timer").css("transition", "1s linear");
          });
      }, 250);
      wpmOverTimeChart.options.annotation.annotations[0].value = "-20";
      wpmOverTimeChart.update();


      // let oldHeight = $("#words").height();
      // let newHeight = $("#words")
      //   .css("height", "fit-content")
      //   .css("height", "-moz-fit-content")
      //   .height();
      // if (testMode == "words" || testMode == "custom") {
      //   $("#words")
      //     .stop(true, true)
      //     .css("height", oldHeight)
      //     .animate({ height: newHeight }, 250, () => {
      //       $("#words")
      //         .css("height", "fit-content")
      //         .css("height", "-moz-fit-content");
      //       $("#wordsInput").focus();  
      //       updateCaretPosition();
      //     });
      // } else if (testMode == "time") {
      //   $("#words")
      //     .stop(true, true)
      //     .css("height", oldHeight)
      //     .animate({ height: 78 }, 250, () => {
      //       $("#wordsInput").focus();  
      //       updateCaretPosition();
      //     });
      // }

    });
  })
}

function focusWords() {
  if (!$("#words").hasClass('hidden')) $("#wordsInput").focus();
}

function changeCustomText() {
  customText = prompt("Custom text");
  customText = customText.replace(/[\n\r\t ]/gm, ' ');
  customText = customText.replace(/ +/gm, ' ');
  // initWords();
}


function changePage(page) {
  if(pageTransition){
    return;
  }
  restartTest();
  let activePage = $(".page.active");
  $(".page").removeClass('active');
  $("#wordsInput").focusout();
  if (page == "test" || page == "") {
    pageTransition = true;
    swapElements(activePage, $(".page.pageTest"), 250, () => {
      pageTransition = false;
      focusWords();
      $(".page.pageTest").addClass('active');
      history.pushState('/', null, '/');
    });
    showTestConfig();
    hideSignOutButton();
    restartCount = 0;
    restartTest();
  } else if (page == "about") {
    pageTransition = true;
    swapElements(activePage, $(".page.pageAbout"), 250, ()=>{
      pageTransition = false;
      history.pushState('about', null, 'about');
      $(".page.pageAbout").addClass('active');
    });
    hideTestConfig();
    hideSignOutButton();
  } else if (page == "settings") {
    pageTransition = true;
    swapElements(activePage, $(".page.pageSettings"), 250, ()=>{
      pageTransition = false;
      history.pushState('settings', null, 'settings');
      $(".page.pageSettings").addClass('active');
    });
    updateSettingsPage();
    hideTestConfig();
    hideSignOutButton();
  } else if (page == "account") {
    if (!firebase.auth().currentUser) {
      changePage("login");
    } else {
      pageTransition = true;
      swapElements(activePage, $(".page.pageAccount"), 250, () =>{
        pageTransition = false;
        history.pushState('account', null, 'account');
        $(".page.pageAccount").addClass('active');
      });
      refreshAccountPage();
      hideTestConfig();
      showSignOutButton();
    }
  } else if (page == "login") {
    if (firebase.auth().currentUser != null) {
      changePage('account');
    } else {
      pageTransition = true;
      swapElements(activePage, $(".page.pageLogin"), 250, ()=>{
        pageTransition = false;
        history.pushState('login', null, 'login');
        $(".page.pageLogin").addClass('active');
      });
      hideTestConfig();
      hideSignOutButton();
    }
  }
}

function changeMode(mode,nosave) {
  config.mode = mode;
  $("#top .config .mode .button").removeClass("active");
  $("#top .config .mode .button[mode='" + mode + "']").addClass("active");
  if (config.mode == "time") {
    $("#top .config .wordCount").addClass("hidden");
    $("#top .config .time").removeClass("hidden");
    $("#top .config .customText").addClass("hidden");
    $("#top .config .punctuationMode").removeClass("hidden");
  } else if (config.mode == "words") {
    $("#top .config .wordCount").removeClass("hidden");
    $("#top .config .time").addClass("hidden");
    $("#top .config .customText").addClass("hidden");
    $("#top .config .punctuationMode").removeClass("hidden");
  } else if (config.mode == "custom") {
    $("#top .config .wordCount").addClass("hidden");
    $("#top .config .time").addClass("hidden");
    $("#top .config .customText").removeClass("hidden");
    $("#top .config .punctuationMode").addClass("hidden");
  }
  if(!nosave) saveConfigToCookie();
}

function liveWPM() {
  let correctWordChars = 0;
  for (let i = 0; i < inputHistory.length; i++) {
    if (inputHistory[i] == wordsList[i]) {
      //the word is correct
      //+1 for space
      correctWordChars += wordsList[i].length + 1;
    }
  }
  let testNow = Date.now();
  let testSeconds = (testNow - testStart) / 1000;
  wpm = (correctWordChars * (60 / testSeconds)) / 5;
  return Math.round(wpm);
}

function liveRaw() {
  let chars = 0;
  for (let i = 0; i < inputHistory.length; i++) {
      chars += inputHistory[i].length + 1;
  }
  let testNow = Date.now();
  let testSeconds = (testNow - testStart) / 1000;
  raw = (chars * (60 / testSeconds)) / 5;
  return Math.round(raw);
}

function updateLiveWpm(wpm) {
  if (!config.showLiveWpm) return;
  if (wpm == 0 || !testActive) hideLiveWpm();
  // let wpmstring = wpm < 100 ? `&nbsp;${wpm}` : `${wpm}`;
  $("#liveWpm").html(wpm);
}

function showLiveWpm() {
  if (!config.showLiveWpm) return;
  if (!testActive) return;
  $("#liveWpm").css('opacity', 0.25);
}

function hideLiveWpm() {
  $("#liveWpm").css('opacity', 0);
}

function swapElements(el1, el2, totalDuration, callback = function() { return; }) {
  if (
    (el1.hasClass('hidden') && !el2.hasClass('hidden')) ||
    (!el1.hasClass('hidden') && el2.hasClass('hidden'))
  ) {
    //one of them is hidden and the other is visible
    if (el1.hasClass("hidden")) {
      callback();
      return false;
    }
    $(el1).removeClass('hidden').css('opacity', 1).animate({
      opacity: 0
    }, totalDuration / 2, () => {
      $(el1).addClass('hidden');
      $(el2).removeClass('hidden').css('opacity', 0).animate({
        opacity: 1
      }, totalDuration / 2, () => {
        callback();
      });
    });

  } else if (el1.hasClass('hidden') && el2.hasClass('hidden')) {
    //both are hidden, only fade in the second
    $(el2).removeClass('hidden').css('opacity', 0).animate({
      opacity: 1
    }, totalDuration, () => {
      callback();
    });
  }else{
    callback();
  }

}

function clearIntervals() {
  timers.forEach(timer => {
    clearInterval(timer);
  })
}

function updateAccountLoginButton() {
  if (firebase.auth().currentUser != null) {
    swapElements($("#menu .button.login"), $("#menu .button.account"), 250);
    // $("#menu .button.account").removeClass('hidden');
    // $("#menu .button.login").addClass('hidden');
  } else {
    swapElements($("#menu .button.account"), $("#menu .button.login"), 250);
    // $("#menu .button.login").removeClass('hidden');
    // $("#menu .button.account").addClass('hidden');
  }
}

function toggleResultWordsDisplay(){
  if(resultVisible){
    if($("#words").hasClass('hidden')){
      //show 
      $("#wordsTitle").css('opacity',1).removeClass('hidden').slideDown(250);


      let newHeight = $("#words").removeClass('hidden').css('height','auto').outerHeight();

      $("#words").css({
        height: 0,
        opacity: 0
      }).animate({
        height: newHeight,
        opacity: 1
      }, 250);
    }else{
      //hide

      $("#wordsTitle").slideUp(250);

      let oldHeight = $("#words").outerHeight();
      $("#words").removeClass('hidden');
      $("#words").css({
        opacity: 1,
        height: oldHeight
      }).animate({
        height: 0,
        opacity: 0
      }, 250, ()=>{
        $("#words").addClass('hidden');
      });
    }
  }
}

function flipTestColors(tf){
  if(tf){
    $("#words").addClass('flipped');
  }else{
    $("#words").removeClass('flipped');
  }
}


$(document).on("click", "#top .logo", (e) => {
  changePage('test');
});

$(document).on("click", "#top .config .wordCount .button", (e) => {
  wrd = $(e.currentTarget).attr('wordCount');
  if(wrd == "custom"){
    let newWrd = prompt('Custom word amount');
    if(newWrd !== null && !isNaN(newWrd) && newWrd > 0){
      changeWordCount(newWrd);
    }
  }else{
    changeWordCount(wrd);
  }
  restartTest();
});

$(document).on("click", "#top .config .time .button", (e) => {
  time = $(e.currentTarget).attr('timeConfig');
  if(time == "custom"){
    let newTime = prompt('Custom time in seconds');
    if(newTime !== null && !isNaN(newTime) && newTime > 0){
      changeTimeConfig(newTime);
    }
  }else{
    changeTimeConfig(time);
  }
  restartTest();
});

$(document).on("click", "#top .config .customText .button", (e) => {
  changeCustomText();
  restartTest();

});

$(document).on("click", "#top .config .punctuationMode .button", (e) => {
  togglePunctuation();
  restartTest();
});

$("#words").click((e) => {
  focusWords();
});

$(document).on("click", "#top .config .mode .button", (e) => {
  if ($(e.currentTarget).hasClass("active")) return;
  mode = e.currentTarget.innerHTML;
  changeMode(mode);
  restartTest();
});

$(document).on("click", "#top #menu .button", (e) => {
  if($(e.currentTarget).hasClass('discord')) return;
  href = $(e.currentTarget).attr('href');
  changePage(href.replace('/', ''));
})

$(window).on('popstate', (e) => {
  let state = e.originalEvent.state;
  if (state == "" || state == "/") {
    // show test
    changePage('test')
  } else if (state == "about") {
    // show about
    changePage("about");
  } else if (state == "account" || state == "login") {
    if (firebase.auth().currentUser) {
      changePage("account");
    } else {
      changePage('login');
    }
  }

});

$(document).on("keypress", "#restartTestButton", (event) => {
  if (event.keyCode == 32 || event.keyCode == 13) {
    if (testActive) {
      restartCount++;
    }
    restartTest();
  }
});

$(document.body).on("click", "#restartTestButton", (event) => {
  restartTest();
});

$(document).on("keypress", "#showWordHistoryButton", (event) => {
  if (event.keyCode == 32 || event.keyCode == 13) {
    if (testActive) {
      restartCount++;
    }
    toggleResultWordsDisplay();
  }
});

$(document.body).on("click", "#showWordHistoryButton", (event) => {
  toggleResultWordsDisplay();
});

$(document.body).on("click", "#copyResultToClipboardButton", (event) => {
  copyResultToClipboard();
});

$(document.body).on("click", ".version", (event) => {
  $("#versionHistoryWrapper").css('opacity', 0).removeClass('hidden').animate({ opacity: 1 }, 125);
});

$(document.body).on("click", "#versionHistoryWrapper", (event) => {
  $("#versionHistoryWrapper").css('opacity', 1).animate({ opacity: 0 }, 125, () => {
    $("#versionHistoryWrapper").addClass('hidden');
  });
});

$("#wordsInput").keypress((event) => {
  event.preventDefault();
});

$("#wordsInput").on("focus", (event) => {
  showCaret();
});

$("#wordsInput").on("focusout", (event) => {
  hideCaret();
});

$(window).resize(() => {
  updateCaretPosition();
});

$(document).mousemove(function(event) {
  if($("#top").hasClass("focus") && (event.originalEvent.movementX > 0 || event.originalEvent.movementY > 0)){
    setFocus(false);
  }
});

//keypresses for the test, using different method to be more responsive
$(document).keypress(function(event) {
  event = emulateLayout(event);
  if (!$("#wordsInput").is(":focus")) return;
  if (event["keyCode"] == 13) return;
  if (event["keyCode"] == 32) return;
  if (event["keyCode"] == 27) return;
  if (event["keyCode"] == 93) return;
  //start the test
  if (currentInput == "" && inputHistory.length == 0) {
    try{
      if (firebase.auth().currentUser != null) {
        firebase.analytics().logEvent('testStarted');
      } else {
        firebase.analytics().logEvent('testStartedNoLogin');
      }
    }catch(e){
      console.log("Analytics unavailable");
    }
    testActive = true;
    testStart = Date.now();
    if (config.mode == "time") {
      showTimer();
    }
    updateTimerBar();
    clearIntervals();
    timers.push(setInterval(function() {
      time++;
      updateTimerBar();
      let wpm = liveWPM();
      updateLiveWpm(wpm);
      showLiveWpm();
      wpmHistory.push(wpm);
      rawHistory.push(liveRaw());
      keypressPerSecond.push(currentKeypressCount);
      currentKeypressCount = 0;
      errorsPerSecond.push(currentErrorCount);
      currentErrorCount = 0;
      if(keypressPerSecond[time-1] == 0 && keypressPerSecond[time-2] == 0 && keypressPerSecond[time-3] == 0 && keypressPerSecond[time-4] == 0 && !afkDetected){
        showNotification("AFK detected",3000);
        afkDetected = true;
      }
      if (config.mode == "time") {
        if (time >= config.time) {
          clearIntervals();
          hideCaret();
          testActive = false;
          showResult();
        }
      }
    }, 1000));
  } else {
    if (!testActive) return;
  }
  if (wordsList[currentWordIndex].substring(currentInput.length, currentInput.length + 1) != event["key"]) {
    accuracyStats.incorrect++;
    currentErrorCount++;
  } else {
    accuracyStats.correct++;
  }
  currentKeypressCount++;
  currentInput += event["key"];
  $("#words .word.active").attr('input',currentInput);
  setFocus(true);
  activeWordTopBeforeJump = activeWordTop;
  compareInput(currentWordIndex,currentInput,!config.blindMode);
  let newActiveTop = $("#words .word.active").position().top;
  if(activeWordTopBeforeJump != newActiveTop){
    activeWordJumped = true;
  }
  updateCaretPosition();
});

//handle keyboard events
$(document).keydown((event) => {


  //tab

  if (event["keyCode"] == 9) {
    if (config.quickTab && $(".pageTest").hasClass("active")) {
      event.preventDefault();
      if (testActive) {
        restartCount++;
      }
      restartTest();
    }
  }

  //only for the typing test
  if ($("#wordsInput").is(":focus")) {
    //backspace
    if (event["keyCode"] == 8) {
      event.preventDefault();
      if (!testActive) return;
      if (currentInput == "" && inputHistory.length > 0) {
        if (
          (inputHistory[currentWordIndex - 1] == wordsList[currentWordIndex - 1] && !config.freedomMode) || $($(".word")[currentWordIndex - 1]).hasClass("hidden")
        ) {
          return;
        } else {
          if (event["ctrlKey"] || event["altKey"]) {
            currentInput = "";
            inputHistory.pop();
          } else {
            currentInput = inputHistory.pop();
          }
          currentWordIndex--;
          updateActiveElement();
          compareInput(currentWordIndex,currentInput,!config.blindMode);
        }
      } else {
        // if ($($(".word")[currentWordIndex - 1]).hasClass("hidden")) {
        //   return;
        // }
        if (event["ctrlKey"]) {
          currentInput = "";
        } else {
          currentInput = currentInput.substring(0, currentInput.length - 1);
        }
        compareInput(currentWordIndex,currentInput,!config.blindMode);
      }
      currentKeypressCount++;
      updateCaretPosition();
    }
    //space
    if (event["keyCode"] == 32) {
      if (!testActive) return;
      if (currentInput == "") return;
      event.preventDefault();
      let currentWord = wordsList[currentWordIndex];
      if (config.mode == "time") {
        let currentTop = $($("#words .word")[currentWordIndex]).position().top;
        let nextTop = $($("#words .word")[currentWordIndex + 1]).position().top;
        if (nextTop > currentTop || activeWordJumped) {
          //last word of the line
          if(currentTestLine > 0){

            let hideBound = currentTop;
            if(activeWordJumped){
              hideBound = activeWordTopBeforeJump;
            }
            activeWordJumped = false;

            let toHide = [];
            for (let i = 0; i < currentWordIndex + 1; i++) {
              let forWordTop = $($("#words .word")[i]).position().top;
              if(forWordTop < hideBound){
                // $($("#words .word")[i]).addClass("hidden");
                toHide.push($($("#words .word")[i]));
              }
            }
            toHide.forEach(el => el.addClass('hidden'));
          }
          currentTestLine++;
        }
      }
      if(config.blindMode) $("#words .word.active letter").addClass('correct');
      if (currentWord == currentInput) {
        inputHistory.push(currentInput);
        currentInput = "";
        currentWordIndex++;
        updateActiveElement();
        updateCaretPosition();
      } else {
        inputHistory.push(currentInput);
        highlightBadWord(currentWordIndex,!config.blindMode)
        currentInput = "";
        currentWordIndex++;
        if (currentWordIndex == wordsList.length) {
          showResult();
          return;
        }else if(config.difficulty == "expert" || config.difficulty == "master"){
          showResult(true);
          restartCount++;
          return;
        }
        updateActiveElement();
        updateCaretPosition();
      }
      if (config.mode == "time") {
        addWord();
      }
    }
  }
});

loadConfigFromCookie();
getReleasesFromGitHub();

if (firebase.app().options.projectId === "monkey-type-dev-67af4") {
  $("#top .logo .bottom").text("monkey-dev");
  $("head title").text("Monkey Dev")
}

if (window.location.hostname === "localhost") {
  window.onerror = function(error) {
    this.showNotification(error,3000);
  };
  $("#top .logo .top").text("localhost");
  $("head title").text($("head title").text() + " (localhost)");

}

$(document).on('mouseenter','#words .word',e =>{
  if(resultVisible){
    let input = $(e.currentTarget).attr('input');
    if(input != undefined) $(e.currentTarget).append(`<div class="wordInputAfter">${input}</div>`);
  }
})

$(document).on('mouseleave','#words .word',e =>{
  $('.wordInputAfter').remove();
})

$(document).ready(() => {
  updateFavicon(32,14);
  $('body').css('transition', '.25s');
  restartTest();
  if (config.quickTab) {
    $("#restartTestButton").addClass('hidden');
  }
  $("#centerContent").css("opacity", "0").removeClass("hidden").stop(true, true).animate({ opacity: 1 }, 250);
});

let ctx = $("#wpmChart");
let wpmOverTimeChart = new Chart(ctx, {
  type: 'line',
  data: {
    labels: [],
    datasets: [{
      label: "wpm",
      data: [],
      // backgroundColor: 'rgba(255, 255, 255, 0.25)',
      borderColor: 'rgba(125, 125, 125, 1)',
      borderWidth: 2,
      yAxisID: "wpm",
      order: 2,
      radius: 2
    },
    {
      label: "raw",
      data: [],
      // backgroundColor: 'rgba(255, 255, 255, 0.25)',
      borderColor: 'rgba(125, 125, 125, 1)',
      borderWidth: 2,
      yAxisID: "raw",
      order: 3,
      radius: 2
    },
    {
      label: "errors",
      data: [],
      // backgroundColor: 'rgba(255, 255, 255, 0.25)',
      borderColor: 'rgba(255, 125, 125, 1)',
      borderWidth: 2,
      order: 1,
      yAxisID: "error",
      // barPercentage: 0.1,
      maxBarThickness: 10,
      type: "scatter",
      pointStyle: "crossRot",
      radius: function(context) {
        var index = context.dataIndex;
        var value = context.dataset.data[index];
        return value.y <= 0 ? 0 : 3
      }
    }],
  },
  options: {
    tooltips: {
      titleFontFamily: "Roboto Mono",
      bodyFontFamily: "Roboto Mono",
      mode: 'x',
      intersect: false
    },
    legend: {
      display: false,
      labels: {
        defaultFontFamily: "Roboto Mono"
      }
    },
    responsive: true,
    maintainAspectRatio: false,
    hover: {
      mode: 'x',
      intersect: false
    },
    scales: {

      xAxes: [{
        ticks: {
          fontFamily: "Roboto Mono"
        },
        display: true,
        scaleLabel: {
          display: true,
          labelString: 'Seconds',
          fontFamily: "Roboto Mono"
        }
      }],
      yAxes: [{
        id: "wpm",
        display: true,
        scaleLabel: {
          display: true,
          labelString: 'Words per Minute',
          fontFamily: 'Roboto Mono'
        },
        ticks: {
          fontFamily: 'Roboto Mono',
          beginAtZero: true,
          min: 0,
          autoSkipPadding: 5
        },
        gridLines: {
          display:false
        }
      },
      {
        id: "raw",
        display: false,
        scaleLabel: {
          display: true,
          labelString: 'Raw Words per Minute',
          fontFamily: 'Roboto Mono'
        },
        ticks: {
          fontFamily: 'Roboto Mono',
          beginAtZero: true,
          min: 0
        },
        gridLines: {
          display:false
        }
      },
      {
        id: "error",
        display: true,
        position: 'right',
        scaleLabel: {
          display: true,
          labelString: 'Errors',
          fontFamily: 'Roboto Mono'
        },
        ticks: {
          precision:0,
          fontFamily: 'Roboto Mono',
          beginAtZero: true
        },
        gridLines: {
          display:true
        }
      }
    ]
    },
    annotation: {
      annotations: [{
        enabled: false,
        type: 'line',
        mode: 'horizontal',
        scaleID: 'wpm',
        value: '-20',
        borderColor: 'red',
        borderWidth: 1,
        borderDash: [2,2],
        label: {
          // Background color of label, default below
          backgroundColor: 'blue',
          fontFamily: "Roboto Mono",

          // Font size of text, inherits from global
          fontSize: 11,
      
          // Font style of text, default below
          fontStyle: "normal",
      
          // Font color of text, default below
          fontColor: "#fff",
      
          // Padding of label to add left/right, default below
          xPadding: 6,
      
          // Padding of label to add top/bottom, default below
          yPadding: 6,
      
          // Radius of label rectangle, default below
          cornerRadius: 3,
      
          // Anchor position of label on line, can be one of: top, bottom, left, right, center. Default below.
          position: "center",
      
          // Whether the label is enabled and should be displayed
          enabled: true,
      
          // Text to display in label - default is null. Provide an array to display values on a new line
          content: "PB",

        },
      }]
    }
  }
});