/**
 * Drama Ling - 模擬數據
 * 開發和測試用的模擬數據集
 */

/**
 * 模擬用戶數據
 */
export const mockUsers = [
    {
        id: 'user_001',
        email: 'demo@dramaling.com',
        name: '張小明',
        avatar: '/assets/media/images/avatar-1.png',
        level: '中級',
        joinDate: '2024-01-15',
        preferences: {
            language: 'zh-TW',
            theme: 'auto',
            soundEnabled: true,
            notificationsEnabled: true
        }
    },
    {
        id: 'user_002',
        email: 'sarah@example.com',
        name: 'Sarah Chen',
        avatar: '/assets/media/images/avatar-2.png',
        level: '高級',
        joinDate: '2023-11-20',
        preferences: {
            language: 'zh-TW',
            theme: 'light',
            soundEnabled: false,
            notificationsEnabled: true
        }
    }
];

/**
 * 模擬用戶統計數據
 */
export const mockUserStats = {
    totalWords: 1247,
    studyTime: 45, // 小時
    achievements: 12,
    streak: 7, // 連續學習天數
    diamonds: 2580,
    weeklyGoal: 5, // 每週學習時數目標
    weeklyProgress: 3.5, // 本週已完成時數
    levelProgress: 78, // 等級進度百分比
    accuracy: 85, // 整體答題準確率
    strongCategories: ['商務', '旅遊', '日常對話'],
    weakCategories: ['科技', '醫療']
};

/**
 * 模擬詞彙數據
 */
export const mockVocabulary = [
    {
        id: 'vocab_001',
        word: 'appreciate',
        definition: '感激；欣賞；理解',
        pronunciation: '/əˈpriːʃieɪt/',
        difficulty: 'intermediate',
        category: 'business',
        examples: [
            {
                english: 'I appreciate your hard work.',
                chinese: '我很感激你的辛勤工作。'
            },
            {
                english: 'Do you appreciate classical music?',
                chinese: '你欣賞古典音樂嗎？'
            }
        ],
        audioUrl: '/assets/media/audio/appreciate.mp3',
        imageUrl: '/assets/media/images/appreciate.jpg',
        tags: ['emotion', 'business', 'common'],
        addedDate: '2024-09-01',
        masteryLevel: 0.8, // 0-1，掌握程度
        reviewCount: 5,
        correctCount: 4,
        lastReviewed: '2024-09-09'
    },
    {
        id: 'vocab_002',
        word: 'definitely',
        definition: '當然；肯定地',
        pronunciation: '/ˈdefɪnətli/',
        difficulty: 'beginner',
        category: 'daily',
        examples: [
            {
                english: 'I will definitely come to your party.',
                chinese: '我一定會參加你的派對。'
            },
            {
                english: 'That was definitely the best movie I\'ve seen.',
                chinese: '那絕對是我看過最好的電影。'
            }
        ],
        audioUrl: '/assets/media/audio/definitely.mp3',
        imageUrl: '/assets/media/images/definitely.jpg',
        tags: ['adverb', 'confirmation', 'common'],
        addedDate: '2024-08-28',
        masteryLevel: 0.95,
        reviewCount: 8,
        correctCount: 8,
        lastReviewed: '2024-09-08'
    },
    {
        id: 'vocab_003',
        word: 'entrepreneur',
        definition: '企業家；創業者',
        pronunciation: '/ˌɒntrəprəˈnɜː(r)/',
        difficulty: 'advanced',
        category: 'business',
        examples: [
            {
                english: 'She is a successful entrepreneur.',
                chinese: '她是一位成功的企業家。'
            },
            {
                english: 'Many entrepreneurs start with small businesses.',
                chinese: '許多企業家都是從小企業開始的。'
            }
        ],
        audioUrl: '/assets/media/audio/entrepreneur.mp3',
        imageUrl: '/assets/media/images/entrepreneur.jpg',
        tags: ['business', 'career', 'advanced'],
        addedDate: '2024-09-05',
        masteryLevel: 0.4,
        reviewCount: 2,
        correctCount: 1,
        lastReviewed: '2024-09-07'
    }
];

/**
 * 模擬對話場景數據
 */
export const mockDialogues = [
    {
        id: 'dialogue_001',
        title: '餐廳點餐',
        category: 'restaurant',
        difficulty: 'beginner',
        description: '在餐廳與服務生的基本對話練習',
        estimatedTime: 5, // 分鐘
        thumbnail: '/assets/media/images/restaurant-scene.jpg',
        characters: [
            {
                id: 'customer',
                name: '顧客',
                avatar: '/assets/media/images/customer-avatar.png'
            },
            {
                id: 'waiter',
                name: '服務生',
                avatar: '/assets/media/images/waiter-avatar.png',
                isAI: true
            }
        ],
        conversation: [
            {
                speaker: 'waiter',
                text: 'Good evening! Welcome to our restaurant. How many people?',
                chinese: '晚安！歡迎來到我們餐廳。請問幾位？',
                audioUrl: '/assets/media/audio/dialogue_001_01.mp3'
            },
            {
                speaker: 'customer',
                text: 'Table for two, please.',
                chinese: '請給我們兩人桌。',
                audioUrl: '/assets/media/audio/dialogue_001_02.mp3',
                isUserResponse: true,
                alternatives: [
                    'Two people, please.',
                    'A table for two.',
                    'Party of two.'
                ]
            },
            {
                speaker: 'waiter',
                text: 'Perfect! Right this way, please. Here are your menus.',
                chinese: '很好！請這邊走。這是菜單。',
                audioUrl: '/assets/media/audio/dialogue_001_03.mp3'
            }
        ],
        completedBy: 1250, // 完成人數
        rating: 4.8,
        tags: ['restaurant', 'basic', 'ordering']
    },
    {
        id: 'dialogue_002',
        title: '機場報到',
        category: 'travel',
        difficulty: 'intermediate',
        description: '在機場辦理登機手續的對話',
        estimatedTime: 8,
        thumbnail: '/assets/media/images/airport-scene.jpg',
        characters: [
            {
                id: 'passenger',
                name: '乘客',
                avatar: '/assets/media/images/passenger-avatar.png'
            },
            {
                id: 'checkin_agent',
                name: '報到人員',
                avatar: '/assets/media/images/agent-avatar.png',
                isAI: true
            }
        ],
        conversation: [
            {
                speaker: 'checkin_agent',
                text: 'Good morning! May I have your passport and ticket, please?',
                chinese: '早安！請出示您的護照和機票。',
                audioUrl: '/assets/media/audio/dialogue_002_01.mp3'
            },
            {
                speaker: 'passenger',
                text: 'Here you go.',
                chinese: '給您。',
                audioUrl: '/assets/media/audio/dialogue_002_02.mp3',
                isUserResponse: true,
                alternatives: [
                    'Here they are.',
                    'Sure, here you are.',
                    'Of course.'
                ]
            }
        ],
        completedBy: 890,
        rating: 4.6,
        tags: ['travel', 'airport', 'procedures']
    }
];

/**
 * 模擬學習進度數據
 */
export const mockLearningProgress = {
    dailyStats: [
        { date: '2024-09-03', wordsLearned: 15, timeSpent: 25, accuracy: 82 },
        { date: '2024-09-04', wordsLearned: 12, timeSpent: 30, accuracy: 88 },
        { date: '2024-09-05', wordsLearned: 18, timeSpent: 35, accuracy: 75 },
        { date: '2024-09-06', wordsLearned: 20, timeSpent: 40, accuracy: 90 },
        { date: '2024-09-07', wordsLearned: 16, timeSpent: 28, accuracy: 85 },
        { date: '2024-09-08', wordsLearned: 14, timeSpent: 32, accuracy: 87 },
        { date: '2024-09-09', wordsLearned: 22, timeSpent: 45, accuracy: 92 }
    ],
    weeklyGoals: {
        wordsTarget: 100,
        timeTarget: 5 * 60, // 5小時，以分鐘為單位
        currentWords: 117,
        currentTime: 235 // 分鐘
    },
    categoryProgress: {
        business: { total: 150, mastered: 120, learning: 25, difficult: 5 },
        daily: { total: 200, mastered: 180, learning: 15, difficult: 5 },
        travel: { total: 80, mastered: 60, learning: 15, difficult: 5 },
        technology: { total: 100, mastered: 45, learning: 30, difficult: 25 }
    },
    achievements: [
        {
            id: 'first_week',
            title: '初次體驗',
            description: '完成第一週學習',
            icon: '🎯',
            unlockedDate: '2024-01-22',
            rarity: 'common'
        },
        {
            id: 'streak_7',
            title: '七日連勝',
            description: '連續學習7天',
            icon: '🔥',
            unlockedDate: '2024-02-01',
            rarity: 'rare'
        },
        {
            id: 'words_1000',
            title: '詞彙大師',
            description: '學習1000個詞彙',
            icon: '📚',
            unlockedDate: '2024-08-15',
            rarity: 'epic'
        }
    ]
};

/**
 * 模擬系統設定數據
 */
export const mockSystemSettings = {
    themes: [
        { id: 'auto', name: '自動', description: '跟隨系統設定' },
        { id: 'light', name: '淺色', description: '淺色主題' },
        { id: 'dark', name: '深色', description: '深色主題' }
    ],
    languages: [
        { id: 'zh-TW', name: '繁體中文', flag: '🇹🇼' },
        { id: 'zh-CN', name: '简体中文', flag: '🇨🇳' },
        { id: 'en-US', name: 'English', flag: '🇺🇸' },
        { id: 'ja-JP', name: '日本語', flag: '🇯🇵' }
    ],
    notificationTypes: [
        { id: 'daily_reminder', name: '每日提醒', description: '提醒您每天學習' },
        { id: 'streak_warning', name: '連勝警告', description: '連勝即將中斷時提醒' },
        { id: 'achievement', name: '成就通知', description: '獲得新成就時通知' },
        { id: 'weekly_report', name: '週報', description: '每週學習報告' }
    ]
};

/**
 * 模擬 API 響應數據
 */
export const mockApiResponses = {
    login: {
        success: {
            token: 'mock_jwt_token_12345',
            user: mockUsers[0],
            expiresIn: 86400 // 24小時
        },
        error: {
            message: '帳號或密碼錯誤',
            code: 'INVALID_CREDENTIALS'
        }
    },
    
    getUserStats: {
        success: mockUserStats,
        error: {
            message: '無法載入用戶統計',
            code: 'STATS_LOAD_ERROR'
        }
    },
    
    getVocabulary: {
        success: {
            data: mockVocabulary,
            total: mockVocabulary.length,
            page: 1,
            limit: 20
        },
        error: {
            message: '無法載入詞彙數據',
            code: 'VOCABULARY_LOAD_ERROR'
        }
    },
    
    getDialogues: {
        success: {
            data: mockDialogues,
            total: mockDialogues.length,
            page: 1,
            limit: 10
        },
        error: {
            message: '無法載入對話數據',
            code: 'DIALOGUE_LOAD_ERROR'
        }
    }
};

/**
 * 模擬 API 客戶端
 * 用於開發環境的 API 模擬
 */
export class MockApiClient {
    constructor() {
        this.delay = 300; // 模擬網路延遲
        this.failureRate = 0.1; // 10% 機率失敗
    }
    
    /**
     * 模擬 API 延遲
     */
    async simulateDelay() {
        return new Promise(resolve => {
            setTimeout(resolve, this.delay);
        });
    }
    
    /**
     * 模擬隨機失敗
     */
    simulateRandomFailure() {
        return Math.random() < this.failureRate;
    }
    
    /**
     * 用戶登入
     */
    async login(email, password) {
        await this.simulateDelay();
        
        if (this.simulateRandomFailure()) {
            throw new Error(mockApiResponses.login.error.message);
        }
        
        // 簡單的驗證邏輯
        if (email === 'demo@dramaling.com' && password === 'password') {
            return mockApiResponses.login.success;
        } else {
            throw new Error(mockApiResponses.login.error.message);
        }
    }
    
    /**
     * 獲取用戶統計
     */
    async getUserStats() {
        await this.simulateDelay();
        
        if (this.simulateRandomFailure()) {
            throw new Error(mockApiResponses.getUserStats.error.message);
        }
        
        return mockApiResponses.getUserStats.success;
    }
    
    /**
     * 獲取詞彙列表
     */
    async getVocabulary(params = {}) {
        await this.simulateDelay();
        
        if (this.simulateRandomFailure()) {
            throw new Error(mockApiResponses.getVocabulary.error.message);
        }
        
        let filteredVocabulary = [...mockVocabulary];
        
        // 模擬過濾和排序
        if (params.category) {
            filteredVocabulary = filteredVocabulary.filter(
                vocab => vocab.category === params.category
            );
        }
        
        if (params.difficulty) {
            filteredVocabulary = filteredVocabulary.filter(
                vocab => vocab.difficulty === params.difficulty
            );
        }
        
        return {
            data: filteredVocabulary,
            total: filteredVocabulary.length,
            page: params.page || 1,
            limit: params.limit || 20
        };
    }
    
    /**
     * 獲取對話場景
     */
    async getDialogues(params = {}) {
        await this.simulateDelay();
        
        if (this.simulateRandomFailure()) {
            throw new Error(mockApiResponses.getDialogues.error.message);
        }
        
        let filteredDialogues = [...mockDialogues];
        
        if (params.category) {
            filteredDialogues = filteredDialogues.filter(
                dialogue => dialogue.category === params.category
            );
        }
        
        if (params.difficulty) {
            filteredDialogues = filteredDialogues.filter(
                dialogue => dialogue.difficulty === params.difficulty
            );
        }
        
        return {
            data: filteredDialogues,
            total: filteredDialogues.length,
            page: params.page || 1,
            limit: params.limit || 10
        };
    }
    
    /**
     * 獲取學習進度
     */
    async getLearningProgress() {
        await this.simulateDelay();
        
        if (this.simulateRandomFailure()) {
            throw new Error('無法載入學習進度');
        }
        
        return mockLearningProgress;
    }
    
    /**
     * 獲取當前用戶
     */
    async getCurrentUser() {
        await this.simulateDelay();
        
        if (this.simulateRandomFailure()) {
            throw new Error('無法載入用戶資料');
        }
        
        return mockUsers[0];
    }
}

// 導出模擬 API 客戶端實例
export const mockApi = new MockApiClient();