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{% extends "Test-layout.html" %}


{% block content %}<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Dynamic General Knowledge Quiz</title>
  <script src="https://cdn.tailwindcss.com"></script>
  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet">
  <script src="https://cdnjs.cloudflare.com/ajax/libs/html2pdf.js/0.10.1/html2pdf.bundle.min.js"></script>
  <script src="https://cdn.jsdelivr.net/npm/canvas-confetti@1.6.0/dist/confetti.browser.min.js"></script>
  <style>
    body { font-family: 'Inter', sans-serif; }
    .quiz-option { transition: all 0.2s ease-in-out; }
    .quiz-option:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
    .quiz-option input:checked + label { background-color: #3b82f6; color: white; border-color: #2563eb; }
    .correct { border-left: 5px solid #22c55e; }
    .incorrect { border-left: 5px solid #ef4444; }
    .progress-bar { transition: width 0.3s ease-in-out; }
    #timer { transition: color 0.3s ease-in-out; }
    kbd { background-color: #f3f4f6; border: 1px solid #d1d5db; border-radius: 0.25rem; padding: 0.25rem 0.5rem; font-family: monospace; font-weight: 600; }
  </style>
</head>
<body class="bg-gray-100 flex items-center justify-center min-h-screen p-4">

<!-- Start Screen -->
<div id="start-container" class="w-full max-w-2xl bg-white p-6 sm:p-8 rounded-2xl shadow-lg text-center">
  <h1 class="text-3xl sm:text-4xl font-bold text-gray-800 mb-4">General Knowledge Challenge</h1>
  <p class="text-gray-600 mb-8">Test your knowledge with these quick-fire questions!</p>
  <div class="text-left bg-gray-50 p-4 rounded-lg border border-gray-200 mb-8">
    <h3 class="font-bold text-lg mb-3 text-gray-700">📜 Instructions</h3>
    <ul class="list-disc list-inside space-y-2 text-gray-600">
      <li>There are <strong id="instruction-q-count">0</strong> questions in total.</li>
      <li>You will have <strong id="instruction-time">15</strong> seconds to answer each question.</li>
      <li>You have a total of <strong id="instruction-attempts">3</strong> attempts to take this quiz.</li>
      <li class="font-semibold text-yellow-700">Once the quiz starts, do not switch tabs or windows.</li>
      <li class="font-semibold text-yellow-700">Emergency exit: <kbd>Esc</kbd>, <kbd>Space</kbd>, <kbd>A</kbd>, <kbd>M</kbd>.</li>
    </ul>
  </div>
  <button id="start-btn" class="w-full bg-blue-600 text-white font-bold py-3 px-4 rounded-lg hover:bg-blue-700 focus:outline-none focus:ring-4 focus:ring-blue-300 transition-transform transform hover:scale-105">
    Start Quiz
  </button>
</div>

<!-- Quiz View -->
<div id="quiz-container" class="hidden w-full max-w-2xl bg-white p-6 sm:p-8 rounded-2xl shadow-lg">
  <div class="flex justify-between items-center mb-4">
    <div id="progress-container" class="text-gray-500 font-semibold">
      Question <span id="current-question-num">1</span> of <span id="total-question-num">0</span>
    </div>
    <div id="timer-container" class="font-bold text-lg text-gray-700">
      Time: <span id="timer">15</span>s
    </div>
  </div>
  <div class="w-full bg-gray-200 rounded-full h-2.5 mb-6">
    <div id="progress-bar" class="bg-blue-600 h-2.5 rounded-full progress-bar" style="width: 0%"></div>
  </div>
  <div id="question-text" class="text-lg sm:text-xl font-semibold text-gray-800 mb-6 text-center"></div>
  <div id="options-container" class="space-y-4"></div>
  <div id="feedback" class="text-red-500 text-center font-medium mt-4 h-6"></div>
  <button id="next-btn" class="w-full bg-blue-600 text-white font-bold py-3 px-4 rounded-lg mt-6 hover:bg-blue-700 focus:outline-none focus:ring-4 focus:ring-blue-300 transition-transform transform hover:scale-105">
    Next Question
  </button>
</div>

<!-- Results View -->
<div id="score-container" class="hidden w-full max-w-3xl bg-white p-6 sm:p-8 rounded-2xl shadow-lg">
  <div id="results-content">
    <h2 class="text-2xl sm:text-3xl font-bold text-gray-800 mb-2 text-center">Quiz Complete!</h2>
    <p class="text-gray-600 mb-6 text-center">You scored <span id="final-score" class="font-bold text-blue-600 text-xl">0</span> out of <span id="total-questions" class="font-bold text-blue-600 text-xl">0</span></p>
    <div id="results-breakdown" class="space-y-4 text-left mt-8"></div>
  </div>
  <div class="w-full max-w-md mx-auto mt-8 flex flex-col sm:flex-row gap-4">
    <button id="retry-btn" class="w-full bg-gray-700 text-white font-bold py-3 px-4 rounded-lg hover:bg-gray-800 focus:outline-none focus:ring-4 focus:ring-gray-300 transition-transform transform hover:scale-105">
      Try Again
    </button>
    <button id="save-btn" class="w-full bg-green-600 text-white font-bold py-3 px-4 rounded-lg hover:bg-green-700 focus:outline-none focus:ring-4 focus:ring-green-300 transition-transform transform hover:scale-105">
      Save Results
    </button>
  </div>
  <p id="attempts-left-msg" class="text-center text-sm text-gray-500 mt-4"></p>
</div>

<!-- Limit View -->
<div id="limit-container" class="hidden w-full max-w-xl bg-white p-6 sm:p-8 rounded-2xl shadow-lg text-center">
  <h2 class="text-2xl sm:text-3xl font-bold text-gray-800 mb-4">🚫 Attempt Limit Reached</h2>
  <p class="text-gray-600 text-lg">You have already taken the <span id="topic-name-limit" class="font-semibold text-blue-600"></span> quiz 3 times.</p>
</div>

<script>
let quizData = [];
let currentQuestionIndex = 0;
let userAnswers = [];
let shuffledQuizData = [];
let quizInProgress = false;
let timerInterval;

// ✅ Topic-based attempt tracking
const params = new URLSearchParams(window.location.search);
const topic = params.get("topic") || "general";
const ATTEMPT_LIMIT = 60;
const ATTEMPT_KEY = `quizAttempts_${topic}`;
let quizAttempts = parseInt(localStorage.getItem(ATTEMPT_KEY)) || 0;

const QUESTION_TIME = 15;

// DOM references
const startContainer = document.getElementById('start-container');
const quizContainer = document.getElementById('quiz-container');
const scoreContainer = document.getElementById('score-container');
const limitContainer = document.getElementById('limit-container');
const startBtn = document.getElementById('start-btn');
const instructionQCount = document.getElementById('instruction-q-count');
const instructionTime = document.getElementById('instruction-time');
const instructionAttempts = document.getElementById('instruction-attempts');
const currentQNumEl = document.getElementById('current-question-num');
const totalQNumEl = document.getElementById('total-question-num');
const questionTextEl = document.getElementById('question-text');
const optionsContainerEl = document.getElementById('options-container');
const feedbackEl = document.getElementById('feedback');
const nextBtn = document.getElementById('next-btn');
const progressBar = document.getElementById('progress-bar');
const timerEl = document.getElementById('timer');
const finalScoreEl = document.getElementById('final-score');
const totalQuestionsEl = document.getElementById('total-questions');
const resultsBreakdownEl = document.getElementById('results-breakdown');
const retryBtn = document.getElementById('retry-btn');
const saveBtn = document.getElementById('save-btn');

// 🧩 Emergency Exit Key Listener
document.addEventListener('keydown', (e) => {
  const emergencyKeys = ['Escape', ' ', 'a', 'A', 'm', 'M'];
  if (quizInProgress && emergencyKeys.includes(e.key)) {
    e.preventDefault();
    terminateQuiz('⚠️ Emergency exit triggered!');
  }
});

// 🧩 Emergency Exit Handler
function terminateQuiz(message) {
  quizInProgress = false;
  clearInterval(timerInterval);

  // Hide quiz, show alert, save attempt
  quizContainer.classList.add('hidden');
  startContainer.classList.remove('hidden');

  alert(message);

  // Count as one attempt
  quizAttempts++;
  localStorage.setItem(ATTEMPT_KEY, quizAttempts);
  initializeQuiz();
}

// Utility
function shuffleArray(array){for(let i=array.length-1;i>0;i--){const j=Math.floor(Math.random()*(i+1));[array[i],array[j]]=[array[j],array[i]];}}

function startTimer(){
  let timeLeft=QUESTION_TIME;
  timerEl.textContent=timeLeft;
  timerEl.classList.remove('text-red-500');
  timerInterval=setInterval(()=>{
    timeLeft--;
    timerEl.textContent=timeLeft;
    if(timeLeft<=5) timerEl.classList.add('text-red-500');
    if(timeLeft<=0){clearInterval(timerInterval);handleNextQuestion(true);}
  },1000);
}

function showQuestion(){
  clearInterval(timerInterval);
  feedbackEl.textContent='';
  const q=shuffledQuizData[currentQuestionIndex];
  currentQNumEl.textContent=currentQuestionIndex+1;
  totalQNumEl.textContent=shuffledQuizData.length;
  progressBar.style.width=`${((currentQuestionIndex+1)/shuffledQuizData.length)*100}%`;
  questionTextEl.textContent=q.questionText;
  optionsContainerEl.innerHTML='';
  const opts=[...q.options]; shuffleArray(opts);
  opts.forEach(opt=>{
    const id=`q${currentQuestionIndex}-${opt.replace(/\s+/g,'-')}`;
    const div=document.createElement('div');div.classList.add('quiz-option');
    const input=document.createElement('input');input.type='radio';input.name=`question${currentQuestionIndex}`;input.id=id;input.value=opt;input.classList.add('hidden');
    const label=document.createElement('label');label.htmlFor=id;label.textContent=opt;label.classList.add('block','w-full','p-4','border-2','border-gray-200','rounded-lg','cursor-pointer','text-gray-700','font-medium','hover:border-blue-400');
    div.appendChild(input);div.appendChild(label);optionsContainerEl.appendChild(div);
  });
  nextBtn.textContent=currentQuestionIndex===shuffledQuizData.length-1?'Finish Quiz':'Next Question';
  startTimer();
}

function handleNextQuestion(timedOut=false){
  clearInterval(timerInterval);
  const sel=document.querySelector(`input[name="question${currentQuestionIndex}"]:checked`);
  if(timedOut) userAnswers.push(null);
  else{
    if(!sel){feedbackEl.textContent='Please select an answer!';startTimer();return;}
    userAnswers.push(sel.value);
  }
  currentQuestionIndex++;
  currentQuestionIndex<shuffledQuizData.length?showQuestion():showResults();
}

function showResults(){
  quizInProgress=false;clearInterval(timerInterval);
  quizContainer.classList.add('hidden');scoreContainer.classList.remove('hidden');
  quizAttempts++;localStorage.setItem(ATTEMPT_KEY,quizAttempts);
  resultsBreakdownEl.innerHTML='';
  let score=0;
  shuffledQuizData.forEach((q,i)=>{
    const ua=userAnswers[i];const correct=ua===q.answer;if(correct)score++;
    const div=document.createElement('div');div.classList.add('p-4','rounded-lg','bg-gray-50',correct?'correct':'incorrect');
    div.innerHTML=`<p class="font-bold text-gray-800">${i+1}. ${q.question}</p>
    <p class="mt-2 text-sm ${correct?'text-green-700':'text-red-700'}">Your answer: <span class="font-semibold">${ua||"Time's up!"}</span></p>
    ${!correct?`<p class="mt-1 text-sm text-green-700">Correct: <span class="font-semibold">${q.answer}</span></p>`:''}
    <p class="mt-2 text-sm text-gray-600 bg-gray-100 p-2 rounded"><span class="font-semibold">Explanation:</span> ${q.explanation}</p>`;
    resultsBreakdownEl.appendChild(div);
  });
  finalScoreEl.textContent=score;totalQuestionsEl.textContent=shuffledQuizData.length;
  if(score/shuffledQuizData.length>=0.8) confetti({particleCount:150,spread:90,origin:{y:0.6}});
  const left=ATTEMPT_LIMIT-quizAttempts;
  const msg=document.getElementById('attempts-left-msg');
  if(left<=0){retryBtn.disabled=true;retryBtn.textContent='No Attempts Left';retryBtn.classList.add('bg-gray-400','cursor-not-allowed');msg.textContent='You have used all your attempts.';}
  else{msg.textContent=`You have ${left} attempt${left>1?'s':''} left.`;}
}

function initializeQuiz(){
  if(quizAttempts>=ATTEMPT_LIMIT){
    document.getElementById('topic-name-limit').textContent=topic.replace(/_/g,' ');
    startContainer.classList.add('hidden');quizContainer.classList.add('hidden');scoreContainer.classList.add('hidden');limitContainer.classList.remove('hidden');
  } else {
    startContainer.classList.remove('hidden');quizContainer.classList.add('hidden');scoreContainer.classList.add('hidden');limitContainer.classList.add('hidden');
  }
}

startBtn.addEventListener('click',()=>{
  if(quizData.length===0){alert("Quiz data not loaded!");return;}
  shuffledQuizData=[...quizData];
  // shuffleArray(shuffledQuizData);
  startContainer.classList.add('hidden');
  quizContainer.classList.remove('hidden');quizInProgress=true;
  currentQuestionIndex=0;userAnswers=[];
  showQuestion();
});
nextBtn.addEventListener('click',()=>handleNextQuestion(false));
retryBtn.addEventListener('click',()=>{currentQuestionIndex=0;userAnswers=[];scoreContainer.classList.add('hidden');initializeQuiz();});
saveBtn.addEventListener('click',()=>{html2pdf().from(document.getElementById('results-content')).set({margin:1,filename:`${topic}-results.pdf`,image:{type:'jpeg',quality:0.98},html2canvas:{scale:2},jsPDF:{unit:'in',format:'letter',orientation:'portrait'}}).save();});

async function loadQuizData(){
  const count=parseInt(params.get("count"))||5;
  try{
    const res=await fetch(`/api/quiz/${topic}?count=${count}`);
    // const res = await fetch(`./data/${topic}.json`);

    if(!res.ok) throw new Error("Could not load quiz file!");
    const rawData = await res.json();
    quizData = rawData.questions.map(q => ({
      questionText: q.questionText,
      options: q.options,
      answer: q.options[q.correctAnswerIndex],  // convert index to string
      explanation: q.explanation
    }));
  }catch(e){alert("Failed to load quiz data.");quizData=[];}
  
  instructionQCount.textContent=quizData.length;
  instructionTime.textContent=QUESTION_TIME;
  instructionAttempts.textContent=ATTEMPT_LIMIT-quizAttempts;
  initializeQuiz();
}

window.addEventListener('load',loadQuizData);
</script>
</body>
</html>
 {% endblock %}