const animeData = {
    "Naruto": { "genres": ["Action", "Adventure", "Fantasy"] },
    "Death Note": { "genres": ["Mystery", "Psychological", "Supernatural", "Thriller"] },
    "Attack on Titan": { "genres": ["Action", "Dark Fantasy", "Post-apocalyptic"] },
    "One Punch Man": { "genres": ["Action", "Comedy", "Superhero"] },
    "My Hero Academia": { "genres": ["Superhero", "Action", "Comedy"] },
    "Fullmetal Alchemist: Brotherhood": { "genres": ["Adventure", "Dark Fantasy", "Steampunk"] },
    "Demon Slayer": { "genres": ["Adventure", "Dark Fantasy", "Martial Arts"] },
    "Steins;Gate": { "genres": ["Sci-Fi", "Thriller", "Time Travel"] },
    "Hunter x Hunter": { "genres": ["Adventure", "Fantasy", "Martial Arts"] },
    "Code Geass": { "genres": ["Mecha", "Alternate History", "Military"] },
    "Neon Genesis Evangelion": { "genres": ["Psychological", "Science Fiction", "Mecha"] },
    "Cowboy Bebop": { "genres": ["Space Western", "Science Fiction", "Neo-noir"] },
    "Gintama": { "genres": ["Action", "Comedy", "Science Fiction"] },
    "One Piece": { "genres": ["Adventure", "Fantasy", "Comedy"] },
    "Sword Art Online": { "genres": ["Science Fiction", "Adventure", "Romance"] }
};

const animeQuotes = [
    { quote: "I'll take a potato chip... and eat it!", author: "Light Yagami", anime: "Death Note" },
    { quote: "The only ones who should kill are those who are prepared to be killed.", author: "Lelouch Lamperouge", anime: "Code Geass" },
    { quote: "People die if they are killed.", author: "Shirou Emiya", anime: "Fate/stay night" },
    { quote: "I don't want to conquer anything. I just think the guy with the most freedom in this whole ocean... that's the Pirate King!", author: "Monkey D. Luffy", anime: "One Piece" },
    { quote: "The world isn't perfect. But it's there for us, doing the best it can... that's what makes it so damn beautiful.", author: "Roy Mustang", anime: "Fullmetal Alchemist" },
    { quote: "If you don't take risks, you can't create a future!", author: "Monkey D. Luffy", anime: "One Piece" },
    { quote: "Whatever you lose, you'll find it again. But what you throw away you'll never get back.", author: "Himura Kenshin", anime: "Rurouni Kenshin" },
    { quote: "Fear is not evil. It tells you what your weakness is. And once you know your weakness, you can become stronger as well as kinder.", author: "Gildarts Clive", anime: "Fairy Tail" },
    { quote: "It's not the face that makes someone a monster; it's the choices they make with their lives.", author: "Naruto Uzumaki", anime: "Naruto" },
    { quote: "If you don't like your destiny, don't accept it. Instead, have the courage to change it the way you want it to be.", author: "Naruto Uzumaki", anime: "Naruto" }
];

const quizQuestions = [
    {
        question: "How would you describe your personality?",
        options: ["Energetic and optimistic", "Calm and analytical", "Determined and passionate", "Mysterious and aloof"]
    },
    {
        question: "What's your ideal way to spend a weekend?",
        options: ["Training and improving my skills", "Solving complex puzzles or mysteries", "Hanging out with friends", "Exploring new places"]
    },
    {
        question: "If you had a superpower, what would it be?",
        options: ["Super strength", "Mind reading", "Elemental control", "Time manipulation"]
    },
    {
        question: "How do you handle conflicts?",
        options: ["Face them head-on", "Analyze and strategize", "Try to understand all perspectives", "Avoid them if possible"]
    },
    {
        question: "What's your biggest motivation in life?",
        options: ["Protecting loved ones", "Seeking knowledge", "Achieving personal goals", "Making the world a better place"]
    },
    {
        question: "Which animal best represents you?",
        options: ["Fox", "Owl", "Lion", "Wolf"]
    },
    {
        question: "What's your preferred fighting style?",
        options: ["Hand-to-hand combat", "Strategic planning", "Weapons mastery", "Special abilities or magic"]
    }
];

const characters = [
    { name: "Naruto Uzumaki", anime: "Naruto" },
    { name: "L Lawliet", anime: "Death Note" },
    { name: "Mikasa Ackerman", anime: "Attack on Titan" },
    { name: "Spike Spiegel", anime: "Cowboy Bebop" },
    { name: "Gon Freecss", anime: "Hunter x Hunter" },
    { name: "Lelouch Lamperouge", anime: "Code Geass" },
    { name: "Monkey D. Luffy", anime: "One Piece" },
    { name: "Saitama", anime: "One Punch Man" }
];

// DOM Elements
const animeListElement = document.getElementById('animeList');
const genreListElement = document.getElementById('genreList');
const recommendBtn = document.getElementById('recommendBtn');
const randomBtn = document.getElementById('randomBtn');
const recommendationsElement = document.getElementById('recommendations');
const quoteText = document.getElementById('quoteText');
const quoteAuthor = document.getElementById('quoteAuthor');
const newQuoteBtn = document.getElementById('newQuoteBtn');
const quizQuestion = document.getElementById('quizQuestion');
const quizOptions = document.getElementById('quizOptions');
const quizResult = document.getElementById('quizResult');
const restartQuizBtn = document.getElementById('restartQuizBtn');
const quizContainer = document.getElementById('quizContainer');

// State management
let selectedAnime = new Set();
let selectedGenres = new Set();
let currentQuestion = 0;
let userAnswers = [];

// Utility Functions
function createItem(text, listType) {
    const item = document.createElement('div');
    item.classList.add(`${listType}-item`);
    item.textContent = text;
    item.addEventListener('click', () => toggleItem(item, text, listType));
    return item;
}

function toggleItem(item, text, listType) {
    const selectedSet = listType === 'anime' ? selectedAnime : selectedGenres;
    if (selectedSet.has(text)) {
        selectedSet.delete(text);
        item.classList.remove('selected');
    } else {
        selectedSet.add(text);
        item.classList.add('selected');
    }
}

// Recommendation System
function calculateRecommendations() {
    if (selectedAnime.size === 0 && selectedGenres.size === 0) {
        alert('Please select at least one anime or genre!');
        return [];
    }

    const genreWeights = new Map();
    
    // Weight genres from selected anime
    selectedAnime.forEach(anime => {
        const animeGenres = animeData[anime].genres;
        animeGenres.forEach(genre => {
            genreWeights.set(genre, (genreWeights.get(genre) || 0) + 1);
        });
    });

    // Add weights from explicitly selected genres
    selectedGenres.forEach(genre => {
        genreWeights.set(genre, (genreWeights.get(genre) || 0) + 2);
    });

    // Calculate scores for each anime
    const recommendations = [];
    for (const [anime, data] of Object.entries(animeData)) {
        if (selectedAnime.has(anime)) continue;

        const score = data.genres.reduce((sum, genre) => 
            sum + (genreWeights.get(genre) || 0), 0);

        if (score > 0) {
            recommendations.push({ title: anime, genres: data.genres, score });
        }
    }

    return recommendations
        .sort((a, b) => b.score - a.score)
        .slice(0, 5)
        .map(({ title, genres }) => ({ title, genres }));
}

function displayRecommendations(recommendations) {
    recommendationsElement.innerHTML = '<h3>Recommendations:</h3>';
    if (recommendations.length === 0) {
        recommendationsElement.innerHTML += '<p>No recommendations found.</p>';
        return;
    }

    const list = document.createElement('ul');
    recommendations.forEach(anime => {
        const item = document.createElement('li');
        item.textContent = `${anime.title} - ${anime.genres.join(', ')}`;
        list.appendChild(item);
    });
    recommendationsElement.appendChild(list);
}

// Quote System
function displayRandomQuote() {
    const randomQuote = animeQuotes[Math.floor(Math.random() * animeQuotes.length)];
    quoteText.textContent = `"${randomQuote.quote}"`;
    quoteAuthor.textContent = `- ${randomQuote.author} (${randomQuote.anime})`;
}

// Quiz System
function displayQuestion() {
    const question = quizQuestions[currentQuestion];
    quizQuestion.textContent = question.question;
    quizOptions.innerHTML = '';
    question.options.forEach((option, index) => {
        const button = document.createElement('button');
        button.textContent = option;
        button.addEventListener('click', () => selectAnswer(index));
        quizOptions.appendChild(button);
    });
}

function selectAnswer(index) {
    userAnswers.push(index);
    if (currentQuestion < quizQuestions.length - 1) {
        currentQuestion++;
        displayQuestion();
    } else {
        showResult();
    }
}

function showResult() {
    const characterIndex = Math.floor(Math.random() * characters.length);
    const character = characters[characterIndex];
    quizContainer.style.display = 'none';
    quizResult.style.display = 'block';
    quizResult.innerHTML = `
        <h3>Quiz Result</h3>
        <p>Based on your answers, you're most like <strong>${character.name}</strong> from ${character.anime}!</p>
        <p>Remember, this is just for fun. Every person is unique, just like every anime character!</p>
    `;
    restartQuizBtn.style.display = 'block';
}

function restartQuiz() {
    currentQuestion = 0;
    userAnswers = [];
    quizContainer.style.display = 'block';
    quizResult.style.display = 'none';
    restartQuizBtn.style.display = 'none';
    displayQuestion();
}

// Initialize UI
function initializeUI() {
    // Initialize anime list
    Object.keys(animeData).forEach(anime => {
        animeListElement.appendChild(createItem(anime, 'anime'));
    });

    // Initialize genre list
    const allGenres = new Set();
    Object.values(animeData).forEach(data => {
        data.genres.forEach(genre => allGenres.add(genre));
    });
    Array.from(allGenres).forEach(genre => {
        genreListElement.appendChild(createItem(genre, 'genre'));
    });

    // Initialize quote
    displayRandomQuote();

    // Initialize quiz
    displayQuestion();
}

// Event Listeners
recommendBtn.addEventListener('click', () => {
    const recommendations = calculateRecommendations();
    displayRecommendations(recommendations);
});

randomBtn.addEventListener('click', () => {
    const allAnime = Object.keys(animeData);
    const randomAnime = allAnime[Math.floor(Math.random() * allAnime.length)];
    displayRecommendations([{ title: randomAnime, genres: animeData[randomAnime].genres }]);
});

newQuoteBtn.addEventListener('click', displayRandomQuote);
restartQuizBtn.addEventListener('click', restartQuiz);

// Initialize the application
document.addEventListener('DOMContentLoaded', initializeUI);