// === CHINESE STUDY MODE ===

class ChineseStudyGame {
    constructor(options) {
        this.container = options.container;
        this.content = options.content;
        this.onScoreUpdate = options.onScoreUpdate || (() => {});
        this.onGameEnd = options.onGameEnd || (() => {});

        this.score = 0;
        this.isRunning = false;

        this.init();
    }

    init() {
        this.createInterface();
        this.setupEventListeners();
    }

    createInterface() {
        this.container.innerHTML = `
            <div class="chinese-study-container">
                <div class="game-header">
                    <h2>🇨🇳 Chinese Study Mode</h2>
                    <div class="score-display">Score: <span id="score">0</span></div>
                </div>

                <div class="study-modes">
                    <div class="mode-card" data-mode="characters">
                        <div class="mode-icon">📝</div>
                        <h3>Character Recognition</h3>
                        <p>Learn Chinese characters and their meanings</p>
                        <button class="mode-btn">Start Learning</button>
                    </div>

                    <div class="mode-card" data-mode="pinyin">
                        <div class="mode-icon">🗣️</div>
                        <h3>Pinyin Practice</h3>
                        <p>Master Chinese pronunciation with pinyin</p>
                        <button class="mode-btn">Start Learning</button>
                    </div>

                    <div class="mode-card" data-mode="vocabulary">
                        <div class="mode-icon">📚</div>
                        <h3>Vocabulary Cards</h3>
                        <p>Study vocabulary with flashcards</p>
                        <button class="mode-btn">Start Learning</button>
                    </div>

                    <div class="mode-card" data-mode="writing">
                        <div class="mode-icon">✍️</div>
                        <h3>Stroke Order</h3>
                        <p>Learn proper character writing</p>
                        <button class="mode-btn">Start Learning</button>
                    </div>
                </div>

                <div class="placeholder-content">
                    <h3>🚧 Coming Soon!</h3>
                    <p>This is a placeholder for the Chinese study mode. Different learning modules will be implemented here.</p>
                    <p>Available content: ${this.getContentInfo()}</p>
                </div>

                <div class="game-controls">
                    <button onclick="AppNavigation.goBack()" class="back-btn">← Back to Games</button>
                </div>
            </div>
        `;

        this.addStyles();
    }

    setupEventListeners() {
        const modeCards = this.container.querySelectorAll('.mode-card');
        modeCards.forEach(card => {
            card.addEventListener('click', (e) => {
                const mode = card.dataset.mode;
                this.showPlaceholder(mode);
            });
        });
    }

    showPlaceholder(mode) {
        const modeNames = {
            characters: 'Character Recognition',
            pinyin: 'Pinyin Practice',
            vocabulary: 'Vocabulary Cards',
            writing: 'Stroke Order'
        };

        const placeholderDiv = this.container.querySelector('.placeholder-content');
        placeholderDiv.innerHTML = `
            <h3>📱 ${modeNames[mode]} Mode</h3>
            <p>This learning module is being developed!</p>
            <p>It will include interactive exercises for ${mode} practice.</p>
            <button onclick="location.reload()" class="retry-btn">← Back to Study Modes</button>
        `;

        // Add some score for interaction
        this.score += 5;
        this.onScoreUpdate(this.score);
        this.container.querySelector('#score').textContent = this.score;
    }

    getContentInfo() {
        if (!this.content) return 'No content loaded';

        let info = [];
        if (this.content.vocabulary) info.push(`${Object.keys(this.content.vocabulary).length} vocabulary items`);
        if (this.content.sentences) info.push(`${this.content.sentences.length} sentences`);
        if (this.content.texts) info.push(`${this.content.texts.length} texts`);

        return info.length > 0 ? info.join(', ') : 'Basic Chinese content';
    }

    addStyles() {
        const style = document.createElement('style');
        style.textContent = `
            .chinese-study-container {
                max-width: 1000px;
                margin: 0 auto;
                padding: 20px;
                font-family: 'Arial', sans-serif;
            }

            .game-header {
                text-align: center;
                margin-bottom: 30px;
                border-bottom: 2px solid #e5e7eb;
                padding-bottom: 20px;
            }

            .game-header h2 {
                color: #dc2626;
                font-size: 2.2em;
                margin-bottom: 10px;
            }

            .score-display {
                font-size: 1.2em;
                color: #059669;
                font-weight: bold;
            }

            .study-modes {
                display: grid;
                grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
                gap: 20px;
                margin-bottom: 40px;
            }

            .mode-card {
                background: linear-gradient(135deg, #fff 0%, #f8fafc 100%);
                border: 2px solid #e5e7eb;
                border-radius: 16px;
                padding: 24px;
                text-align: center;
                cursor: pointer;
                transition: all 0.3s ease;
                box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            }

            .mode-card:hover {
                border-color: #dc2626;
                transform: translateY(-4px);
                box-shadow: 0 8px 20px rgba(220, 38, 38, 0.15);
            }

            .mode-icon {
                font-size: 3em;
                margin-bottom: 12px;
            }

            .mode-card h3 {
                color: #374151;
                margin-bottom: 8px;
                font-size: 1.3em;
            }

            .mode-card p {
                color: #6b7280;
                margin-bottom: 16px;
                line-height: 1.5;
            }

            .mode-btn {
                background: #dc2626;
                color: white;
                border: none;
                padding: 10px 20px;
                border-radius: 8px;
                cursor: pointer;
                font-weight: bold;
                transition: background 0.3s ease;
            }

            .mode-btn:hover {
                background: #b91c1c;
            }

            .placeholder-content {
                background: #fef3c7;
                border: 2px solid #f59e0b;
                border-radius: 12px;
                padding: 24px;
                text-align: center;
                margin-bottom: 30px;
            }

            .placeholder-content h3 {
                color: #92400e;
                margin-bottom: 12px;
            }

            .placeholder-content p {
                color: #78350f;
                margin-bottom: 8px;
            }

            .game-controls {
                text-align: center;
            }

            .back-btn, .retry-btn {
                background: #6b7280;
                color: white;
                border: none;
                padding: 12px 24px;
                border-radius: 8px;
                cursor: pointer;
                font-size: 1em;
                font-weight: bold;
                transition: background 0.3s ease;
            }

            .back-btn:hover, .retry-btn:hover {
                background: #4b5563;
            }

            @media (max-width: 768px) {
                .study-modes {
                    grid-template-columns: 1fr;
                }

                .chinese-study-container {
                    padding: 15px;
                }

                .game-header h2 {
                    font-size: 1.8em;
                }
            }
        `;
        document.head.appendChild(style);
    }

    start() {
        this.isRunning = true;
        console.log('Chinese Study Mode initialized');
    }

    destroy() {
        this.isRunning = false;
        // Clean up any intervals, event listeners, etc.
    }

    restart() {
        this.score = 0;
        this.onScoreUpdate(this.score);
        this.container.querySelector('#score').textContent = this.score;
        this.createInterface();
        this.setupEventListeners();
    }
}

// Export to global scope
window.GameModules = window.GameModules || {};
window.GameModules.ChineseStudy = ChineseStudyGame;