-- =====================================================
-- AI 展示平台資料庫結構設計
-- 資料庫: MySQL
-- 主機: mysql.theaken.com
-- 端口: 33306
-- 資料庫名: db_AI_Platform
-- 用戶: AI_Platform
-- 密碼: Aa123456
-- =====================================================

-- 創建資料庫 (如果不存在)
CREATE DATABASE IF NOT EXISTS `db_AI_Platform` 
CHARACTER SET utf8mb4 
COLLATE utf8mb4_unicode_ci;

USE `db_AI_Platform`;

-- 1. 用戶表 (users)
CREATE TABLE `users` (
    `id` VARCHAR(36) PRIMARY KEY,
    `name` VARCHAR(100) NOT NULL,
    `email` VARCHAR(255) UNIQUE NOT NULL,
    `password_hash` VARCHAR(255) NOT NULL,
    `avatar` VARCHAR(500) NULL,
    `department` VARCHAR(100) NOT NULL,
    `role` ENUM('user', 'developer', 'admin') DEFAULT 'user',
    `join_date` DATE NOT NULL,
    `total_likes` INT DEFAULT 0,
    `total_views` INT DEFAULT 0,
    `is_active` BOOLEAN DEFAULT TRUE,
    `last_login` TIMESTAMP NULL,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    `updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    
    INDEX `idx_email` (`email`),
    INDEX `idx_department` (`department`),
    INDEX `idx_role` (`role`),
    INDEX `idx_join_date` (`join_date`)
);

-- 2. 評審表 (judges)
CREATE TABLE `judges` (
    `id` VARCHAR(36) PRIMARY KEY,
    `name` VARCHAR(100) NOT NULL,
    `title` VARCHAR(100) NOT NULL,
    `department` VARCHAR(100) NOT NULL,
    `expertise` JSON NOT NULL,
    `avatar` VARCHAR(500) NULL,
    `is_active` BOOLEAN DEFAULT TRUE,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    `updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    
    INDEX `idx_department` (`department`),
    INDEX `idx_is_active` (`is_active`)
);

-- 3. 團隊表 (teams)
CREATE TABLE `teams` (
    `id` VARCHAR(36) PRIMARY KEY,
    `name` VARCHAR(200) NOT NULL,
    `leader_id` VARCHAR(36) NOT NULL,
    `department` VARCHAR(100) NOT NULL,
    `contact_email` VARCHAR(255) NOT NULL,
    `total_likes` INT DEFAULT 0,
    `is_active` BOOLEAN DEFAULT TRUE,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    `updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`leader_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    INDEX `idx_leader` (`leader_id`),
    INDEX `idx_department` (`department`),
    INDEX `idx_is_active` (`is_active`)
);

-- =====================================================
-- 4. 團隊成員表 (team_members)
-- =====================================================
CREATE TABLE `team_members` (
    `id` VARCHAR(36) PRIMARY KEY,
    `team_id` VARCHAR(36) NOT NULL,
    `user_id` VARCHAR(36) NOT NULL,
    `role` VARCHAR(50) NOT NULL DEFAULT 'member',
    `joined_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`team_id`) REFERENCES `teams`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    UNIQUE KEY `unique_team_user` (`team_id`, `user_id`),
    INDEX `idx_team` (`team_id`),
    INDEX `idx_user` (`user_id`)
);

-- =====================================================
-- 5. 競賽表 (competitions)
-- =====================================================
CREATE TABLE `competitions` (
    `id` VARCHAR(36) PRIMARY KEY,
    `name` VARCHAR(200) NOT NULL,
    `year` INT NOT NULL,
    `month` INT NOT NULL,
    `start_date` DATE NOT NULL,
    `end_date` DATE NOT NULL,
    `status` ENUM('upcoming', 'active', 'judging', 'completed') DEFAULT 'upcoming',
    `description` TEXT,
    `type` ENUM('individual', 'team', 'mixed', 'proposal') NOT NULL,
    `evaluation_focus` TEXT,
    `max_team_size` INT NULL,
    `is_active` BOOLEAN DEFAULT TRUE,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    `updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    
    INDEX `idx_year_month` (`year`, `month`),
    INDEX `idx_status` (`status`),
    INDEX `idx_type` (`type`),
    INDEX `idx_dates` (`start_date`, `end_date`)
);

-- =====================================================
-- 6. 競賽評審關聯表 (competition_judges)
-- =====================================================
CREATE TABLE `competition_judges` (
    `id` VARCHAR(36) PRIMARY KEY,
    `competition_id` VARCHAR(36) NOT NULL,
    `judge_id` VARCHAR(36) NOT NULL,
    `assigned_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`competition_id`) REFERENCES `competitions`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`judge_id`) REFERENCES `judges`(`id`) ON DELETE CASCADE,
    UNIQUE KEY `unique_competition_judge` (`competition_id`, `judge_id`),
    INDEX `idx_competition` (`competition_id`),
    INDEX `idx_judge` (`judge_id`)
);

-- =====================================================
-- 7. 競賽規則表 (competition_rules)
-- =====================================================
CREATE TABLE `competition_rules` (
    `id` VARCHAR(36) PRIMARY KEY,
    `competition_id` VARCHAR(36) NOT NULL,
    `name` VARCHAR(200) NOT NULL,
    `description` TEXT,
    `weight` DECIMAL(5,2) NOT NULL DEFAULT 0.00,
    `order_index` INT DEFAULT 0,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`competition_id`) REFERENCES `competitions`(`id`) ON DELETE CASCADE,
    INDEX `idx_competition` (`competition_id`),
    INDEX `idx_order` (`order_index`)
);

-- =====================================================
-- 8. 競賽獎項類型表 (competition_award_types)
-- =====================================================
CREATE TABLE `competition_award_types` (
    `id` VARCHAR(36) PRIMARY KEY,
    `competition_id` VARCHAR(36) NOT NULL,
    `name` VARCHAR(200) NOT NULL,
    `description` TEXT,
    `icon` VARCHAR(50) NOT NULL,
    `color` VARCHAR(20) NOT NULL,
    `order_index` INT DEFAULT 0,
    `is_active` BOOLEAN DEFAULT TRUE,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`competition_id`) REFERENCES `competitions`(`id`) ON DELETE CASCADE,
    INDEX `idx_competition` (`competition_id`),
    INDEX `idx_order` (`order_index`),
    INDEX `idx_is_active` (`is_active`)
);

-- =====================================================
-- 9. 應用表 (apps)
-- =====================================================
CREATE TABLE `apps` (
    `id` VARCHAR(36) PRIMARY KEY,
    `name` VARCHAR(200) NOT NULL,
    `description` TEXT,
    `creator_id` VARCHAR(36) NOT NULL,
    `team_id` VARCHAR(36) NULL,
    `category` VARCHAR(100) NOT NULL,
    `type` VARCHAR(100) NOT NULL,
    `icon` VARCHAR(50) DEFAULT 'Bot',
    `icon_color` VARCHAR(100) DEFAULT 'from-blue-500 to-purple-500',
    `app_url` VARCHAR(500) NULL,
    `likes_count` INT DEFAULT 0,
    `views_count` INT DEFAULT 0,
    `rating` DECIMAL(3,2) DEFAULT 0.00,
    `is_active` BOOLEAN DEFAULT TRUE,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    `updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`creator_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`team_id`) REFERENCES `teams`(`id`) ON DELETE SET NULL,
    INDEX `idx_creator` (`creator_id`),
    INDEX `idx_team` (`team_id`),
    INDEX `idx_category` (`category`),
    INDEX `idx_type` (`type`),
    INDEX `idx_likes` (`likes_count`),
    INDEX `idx_views` (`views_count`)
);

-- =====================================================
-- 10. 提案表 (proposals)
-- =====================================================
CREATE TABLE `proposals` (
    `id` VARCHAR(36) PRIMARY KEY,
    `title` VARCHAR(300) NOT NULL,
    `description` TEXT,
    `problem_statement` TEXT NOT NULL,
    `solution` TEXT NOT NULL,
    `expected_impact` TEXT NOT NULL,
    `team_id` VARCHAR(36) NOT NULL,
    `attachments` JSON NULL,
    `status` ENUM('draft', 'submitted', 'under_review', 'approved', 'rejected') DEFAULT 'draft',
    `submitted_at` TIMESTAMP NULL,
    `is_active` BOOLEAN DEFAULT TRUE,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    `updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`team_id`) REFERENCES `teams`(`id`) ON DELETE CASCADE,
    INDEX `idx_team` (`team_id`),
    INDEX `idx_status` (`status`),
    INDEX `idx_submitted` (`submitted_at`)
);

-- =====================================================
-- 11. 評論投票表 (review_votes)
-- =====================================================
CREATE TABLE `review_votes` (
    `id` VARCHAR(36) PRIMARY KEY,
    `review_id` VARCHAR(36) NOT NULL,
    `user_id` VARCHAR(36) NOT NULL,
    `is_helpful` BOOLEAN NOT NULL, -- true = 有幫助, false = 沒幫助
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`review_id`) REFERENCES `user_ratings`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    UNIQUE KEY `unique_user_review_vote` (`user_id`, `review_id`),
    INDEX `idx_review` (`review_id`),
    INDEX `idx_user` (`user_id`),
    INDEX `idx_helpful` (`is_helpful`)
);

-- =====================================================
-- 12. 競賽參與應用表 (competition_apps)
-- =====================================================
CREATE TABLE `competition_apps` (
    `id` VARCHAR(36) PRIMARY KEY,
    `competition_id` VARCHAR(36) NOT NULL,
    `app_id` VARCHAR(36) NOT NULL,
    `submitted_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`competition_id`) REFERENCES `competitions`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`app_id`) REFERENCES `apps`(`id`) ON DELETE CASCADE,
    UNIQUE KEY `unique_competition_app` (`competition_id`, `app_id`),
    INDEX `idx_competition` (`competition_id`),
    INDEX `idx_app` (`app_id`)
);

-- =====================================================
-- 12. 競賽參與團隊表 (competition_teams)
-- =====================================================
CREATE TABLE `competition_teams` (
    `id` VARCHAR(36) PRIMARY KEY,
    `competition_id` VARCHAR(36) NOT NULL,
    `team_id` VARCHAR(36) NOT NULL,
    `submitted_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    `registered_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`competition_id`) REFERENCES `competitions`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`team_id`) REFERENCES `teams`(`id`) ON DELETE CASCADE,
    UNIQUE KEY `unique_competition_team` (`competition_id`, `team_id`),
    INDEX `idx_competition` (`competition_id`),
    INDEX `idx_team` (`team_id`)
);

-- =====================================================
-- 13. 競賽參與提案表 (competition_proposals)
-- =====================================================
CREATE TABLE `competition_proposals` (
    `id` VARCHAR(36) PRIMARY KEY,
    `competition_id` VARCHAR(36) NOT NULL,
    `proposal_id` VARCHAR(36) NOT NULL,
    `submitted_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`competition_id`) REFERENCES `competitions`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`proposal_id`) REFERENCES `proposals`(`id`) ON DELETE CASCADE,
    UNIQUE KEY `unique_competition_proposal` (`competition_id`, `proposal_id`),
    INDEX `idx_competition` (`competition_id`),
    INDEX `idx_proposal` (`proposal_id`)
);

-- =====================================================
-- 14. 應用評分表 (app_judge_scores)
-- =====================================================
CREATE TABLE `app_judge_scores` (
    `id` VARCHAR(36) PRIMARY KEY,
    `judge_id` VARCHAR(36) NOT NULL,
    `app_id` VARCHAR(36) NOT NULL,
    `innovation_score` INT NOT NULL CHECK (`innovation_score` >= 1 AND `innovation_score` <= 10),
    `technical_score` INT NOT NULL CHECK (`technical_score` >= 1 AND `technical_score` <= 10),
    `usability_score` INT NOT NULL CHECK (`usability_score` >= 1 AND `usability_score` <= 10),
    `presentation_score` INT NOT NULL CHECK (`presentation_score` >= 1 AND `presentation_score` <= 10),
    `impact_score` INT NOT NULL CHECK (`impact_score` >= 1 AND `impact_score` <= 10),
    `total_score` DECIMAL(5,2) NOT NULL,
    `comments` TEXT,
    `submitted_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`judge_id`) REFERENCES `judges`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`app_id`) REFERENCES `apps`(`id`) ON DELETE CASCADE,
    UNIQUE KEY `unique_judge_app` (`judge_id`, `app_id`),
    INDEX `idx_judge` (`judge_id`),
    INDEX `idx_app` (`app_id`),
    INDEX `idx_total_score` (`total_score`)
);

-- =====================================================
-- 15. 提案評分表 (proposal_judge_scores)
-- =====================================================
CREATE TABLE `proposal_judge_scores` (
    `id` VARCHAR(36) PRIMARY KEY,
    `judge_id` VARCHAR(36) NOT NULL,
    `proposal_id` VARCHAR(36) NOT NULL,
    `problem_identification_score` INT NOT NULL CHECK (`problem_identification_score` >= 1 AND `problem_identification_score` <= 10),
    `solution_feasibility_score` INT NOT NULL CHECK (`solution_feasibility_score` >= 1 AND `solution_feasibility_score` <= 10),
    `innovation_score` INT NOT NULL CHECK (`innovation_score` >= 1 AND `innovation_score` <= 10),
    `impact_score` INT NOT NULL CHECK (`impact_score` >= 1 AND `impact_score` <= 10),
    `presentation_score` INT NOT NULL CHECK (`presentation_score` >= 1 AND `presentation_score` <= 10),
    `total_score` DECIMAL(5,2) NOT NULL,
    `comments` TEXT,
    `submitted_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`judge_id`) REFERENCES `judges`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`proposal_id`) REFERENCES `proposals`(`id`) ON DELETE CASCADE,
    UNIQUE KEY `unique_judge_proposal` (`judge_id`, `proposal_id`),
    INDEX `idx_judge` (`judge_id`),
    INDEX `idx_proposal` (`proposal_id`),
    INDEX `idx_total_score` (`total_score`)
);

-- =====================================================
-- 16. 獎項表 (awards)
-- =====================================================
CREATE TABLE `awards` (
    `id` VARCHAR(36) PRIMARY KEY,
    `competition_id` VARCHAR(36) NOT NULL,
    `app_id` VARCHAR(36) NULL,
    `team_id` VARCHAR(36) NULL,
    `proposal_id` VARCHAR(36) NULL,
    `app_name` VARCHAR(200) NULL,
    `team_name` VARCHAR(200) NULL,
    `proposal_title` VARCHAR(300) NULL,
    `creator` VARCHAR(100) NOT NULL,
    `award_type` ENUM('gold', 'silver', 'bronze', 'popular', 'innovation', 'technical', 'custom') NOT NULL,
    `award_name` VARCHAR(200) NOT NULL,
    `score` DECIMAL(5,2) NOT NULL,
    `year` INT NOT NULL,
    `month` INT NOT NULL,
    `icon` VARCHAR(50) NOT NULL,
    `custom_award_type_id` VARCHAR(36) NULL,
    `competition_type` ENUM('individual', 'team', 'proposal') NOT NULL,
    `rank` INT DEFAULT 0,
    `category` ENUM('innovation', 'technical', 'practical', 'popular', 'teamwork', 'solution', 'creativity') NOT NULL,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`competition_id`) REFERENCES `competitions`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`app_id`) REFERENCES `apps`(`id`) ON DELETE SET NULL,
    FOREIGN KEY (`team_id`) REFERENCES `teams`(`id`) ON DELETE SET NULL,
    FOREIGN KEY (`proposal_id`) REFERENCES `proposals`(`id`) ON DELETE SET NULL,
    INDEX `idx_competition` (`competition_id`),
    INDEX `idx_year_month` (`year`, `month`),
    INDEX `idx_award_type` (`award_type`),
    INDEX `idx_rank` (`rank`),
    INDEX `idx_category` (`category`)
);

-- =====================================================
-- 17. 用戶收藏表 (user_favorites)
-- =====================================================
CREATE TABLE `user_favorites` (
    `id` VARCHAR(36) PRIMARY KEY,
    `user_id` VARCHAR(36) NOT NULL,
    `app_id` VARCHAR(36) NOT NULL,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`app_id`) REFERENCES `apps`(`id`) ON DELETE CASCADE,
    UNIQUE KEY `unique_user_app` (`user_id`, `app_id`),
    INDEX `idx_user` (`user_id`),
    INDEX `idx_app` (`app_id`)
);

-- =====================================================
-- 18. 用戶按讚表 (user_likes)
-- =====================================================
CREATE TABLE `user_likes` (
    `id` VARCHAR(36) PRIMARY KEY,
    `user_id` VARCHAR(36) NOT NULL,
    `app_id` VARCHAR(36) NOT NULL,
    `liked_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`app_id`) REFERENCES `apps`(`id`) ON DELETE CASCADE,
    UNIQUE KEY `unique_user_app_date` (`user_id`, `app_id`, `liked_at`),
    INDEX `idx_user` (`user_id`),
    INDEX `idx_app` (`app_id`),
    INDEX `idx_liked_at` (`liked_at`)
);

-- =====================================================
-- 19. 用戶瀏覽記錄表 (user_views)
-- =====================================================
CREATE TABLE `user_views` (
    `id` VARCHAR(36) PRIMARY KEY,
    `user_id` VARCHAR(36) NOT NULL,
    `app_id` VARCHAR(36) NOT NULL,
    `viewed_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    `ip_address` VARCHAR(45) NULL,
    `user_agent` TEXT NULL,
    
    FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`app_id`) REFERENCES `apps`(`id`) ON DELETE CASCADE,
    INDEX `idx_user` (`user_id`),
    INDEX `idx_app` (`app_id`),
    INDEX `idx_viewed_at` (`viewed_at`)
);

-- =====================================================
-- 20. 用戶評分表 (user_ratings)
-- =====================================================
CREATE TABLE `user_ratings` (
    `id` VARCHAR(36) PRIMARY KEY,
    `user_id` VARCHAR(36) NOT NULL,
    `app_id` VARCHAR(36) NOT NULL,
    `rating` DECIMAL(3,2) NOT NULL CHECK (`rating` >= 1.0 AND `rating` <= 5.0),
    `comment` TEXT NULL,
    `rated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    FOREIGN KEY (`app_id`) REFERENCES `apps`(`id`) ON DELETE CASCADE,
    INDEX `idx_user` (`user_id`),
    INDEX `idx_app` (`app_id`),
    INDEX `idx_rating` (`rating`)
);

-- =====================================================
-- 21. AI助手聊天會話表 (chat_sessions)
-- =====================================================
CREATE TABLE `chat_sessions` (
    `id` VARCHAR(36) PRIMARY KEY,
    `user_id` VARCHAR(36) NOT NULL,
    `session_name` VARCHAR(200) NULL,
    `is_active` BOOLEAN DEFAULT TRUE,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    `updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE,
    INDEX `idx_user` (`user_id`),
    INDEX `idx_is_active` (`is_active`)
);

-- =====================================================
-- 22. AI助手聊天訊息表 (chat_messages)
-- =====================================================
CREATE TABLE `chat_messages` (
    `id` VARCHAR(36) PRIMARY KEY,
    `session_id` VARCHAR(36) NOT NULL,
    `text` TEXT NOT NULL,
    `sender` ENUM('user', 'bot') NOT NULL,
    `quick_questions` JSON NULL,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`session_id`) REFERENCES `chat_sessions`(`id`) ON DELETE CASCADE,
    INDEX `idx_session` (`session_id`),
    INDEX `idx_sender` (`sender`),
    INDEX `idx_created_at` (`created_at`)
);

-- =====================================================
-- 23. AI助手配置表 (ai_assistant_configs)
-- =====================================================
CREATE TABLE `ai_assistant_configs` (
    `id` VARCHAR(36) PRIMARY KEY,
    `api_key` VARCHAR(255) NOT NULL,
    `api_url` VARCHAR(500) NOT NULL,
    `model` VARCHAR(100) NOT NULL,
    `max_tokens` INT DEFAULT 200,
    `temperature` DECIMAL(3,2) DEFAULT 0.70,
    `system_prompt` TEXT NOT NULL,
    `is_active` BOOLEAN DEFAULT TRUE,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    `updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    
    INDEX `idx_is_active` (`is_active`)
);

-- =====================================================
-- 24. 系統設定表 (system_settings)
-- =====================================================
CREATE TABLE `system_settings` (
    `id` VARCHAR(36) PRIMARY KEY,
    `key` VARCHAR(100) UNIQUE NOT NULL,
    `value` TEXT NOT NULL,
    `description` TEXT,
    `category` VARCHAR(50) DEFAULT 'general',
    `is_public` BOOLEAN DEFAULT FALSE,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    `updated_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    
    INDEX `idx_key` (`key`),
    INDEX `idx_category` (`category`),
    INDEX `idx_is_public` (`is_public`)
);

-- =====================================================
-- 25. 活動日誌表 (activity_logs)
-- =====================================================
CREATE TABLE `activity_logs` (
    `id` VARCHAR(36) PRIMARY KEY,
    `user_id` VARCHAR(36) NULL,
    `action` VARCHAR(100) NOT NULL,
    `resource_type` VARCHAR(50) NOT NULL,
    `resource_id` VARCHAR(36) NULL,
    `details` JSON NULL,
    `ip_address` VARCHAR(45) NULL,
    `user_agent` TEXT NULL,
    `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    
    FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE SET NULL,
    INDEX `idx_user` (`user_id`),
    INDEX `idx_action` (`action`),
    INDEX `idx_resource` (`resource_type`, `resource_id`),
    INDEX `idx_created_at` (`created_at`)
);

-- =====================================================
-- 觸發器：自動計算總分
-- =====================================================

-- 應用評分觸發器
DELIMITER //
CREATE TRIGGER `calculate_app_total_score` 
BEFORE INSERT ON `app_judge_scores`
FOR EACH ROW
BEGIN
    SET NEW.total_score = (
        NEW.innovation_score + 
        NEW.technical_score + 
        NEW.usability_score + 
        NEW.presentation_score + 
        NEW.impact_score
    ) / 5.0;
END//

CREATE TRIGGER `calculate_app_total_score_update` 
BEFORE UPDATE ON `app_judge_scores`
FOR EACH ROW
BEGIN
    SET NEW.total_score = (
        NEW.innovation_score + 
        NEW.technical_score + 
        NEW.usability_score + 
        NEW.presentation_score + 
        NEW.impact_score
    ) / 5.0;
END//

-- 提案評分觸發器
CREATE TRIGGER `calculate_proposal_total_score` 
BEFORE INSERT ON `proposal_judge_scores`
FOR EACH ROW
BEGIN
    SET NEW.total_score = (
        NEW.problem_identification_score + 
        NEW.solution_feasibility_score + 
        NEW.innovation_score + 
        NEW.impact_score + 
        NEW.presentation_score
    ) / 5.0;
END//

CREATE TRIGGER `calculate_proposal_total_score_update` 
BEFORE UPDATE ON `proposal_judge_scores`
FOR EACH ROW
BEGIN
    SET NEW.total_score = (
        NEW.problem_identification_score + 
        NEW.solution_feasibility_score + 
        NEW.innovation_score + 
        NEW.impact_score + 
        NEW.presentation_score
    ) / 5.0;
END//

DELIMITER ;

-- =====================================================
-- 視圖：用戶統計視圖
-- =====================================================
CREATE VIEW `user_statistics` AS
SELECT 
    u.id,
    u.name,
    u.email,
    u.department,
    u.role,
    u.join_date,
    u.total_likes,
    u.total_views,
    COUNT(DISTINCT f.app_id) as favorite_count,
    COUNT(DISTINCT l.app_id) as liked_apps_count,
    COUNT(DISTINCT v.app_id) as viewed_apps_count,
    AVG(r.rating) as average_rating_given,
    COUNT(DISTINCT t.id) as teams_joined,
    COUNT(DISTINCT CASE WHEN t.leader_id = u.id THEN t.id END) as teams_led
FROM users u
LEFT JOIN user_favorites f ON u.id = f.user_id
LEFT JOIN user_likes l ON u.id = l.user_id
LEFT JOIN user_views v ON u.id = v.user_id
LEFT JOIN user_ratings r ON u.id = r.user_id
LEFT JOIN team_members tm ON u.id = tm.user_id
LEFT JOIN teams t ON tm.team_id = t.id
WHERE u.is_active = TRUE
GROUP BY u.id;

-- =====================================================
-- 視圖：應用統計視圖
-- =====================================================
CREATE VIEW `app_statistics` AS
SELECT 
    a.id,
    a.name,
    a.description,
    a.category,
    a.type,
    a.likes_count,
    a.views_count,
    a.rating,
    u.name as creator_name,
    u.department as creator_department,
    t.name as team_name,
    COUNT(DISTINCT f.user_id) as favorite_users_count,
    COUNT(DISTINCT l.user_id) as liked_users_count,
    COUNT(DISTINCT v.user_id) as viewed_users_count,
    AVG(ajs.total_score) as average_judge_score,
    COUNT(DISTINCT ajs.judge_id) as judge_count
FROM apps a
LEFT JOIN users u ON a.creator_id = u.id
LEFT JOIN teams t ON a.team_id = t.id
LEFT JOIN user_favorites f ON a.id = f.app_id
LEFT JOIN user_likes l ON a.id = l.app_id
LEFT JOIN user_views v ON a.id = v.app_id
LEFT JOIN app_judge_scores ajs ON a.id = ajs.app_id
WHERE a.is_active = TRUE
GROUP BY a.id;

-- =====================================================
-- 視圖：競賽統計視圖
-- =====================================================
CREATE VIEW `competition_statistics` AS
SELECT 
    c.id,
    c.name,
    c.year,
    c.month,
    c.type,
    c.status,
    COUNT(DISTINCT cj.judge_id) as judge_count,
    COUNT(DISTINCT ca.app_id) as app_count,
    COUNT(DISTINCT ct.team_id) as team_count,
    COUNT(DISTINCT cp.proposal_id) as proposal_count,
    COUNT(DISTINCT aw.id) as award_count
FROM competitions c
LEFT JOIN competition_judges cj ON c.id = cj.competition_id
LEFT JOIN competition_apps ca ON c.id = ca.competition_id
LEFT JOIN competition_teams ct ON c.id = ct.competition_id
LEFT JOIN competition_proposals cp ON c.id = cp.competition_id
LEFT JOIN awards aw ON c.id = aw.competition_id
WHERE c.is_active = TRUE
GROUP BY c.id;

-- =====================================================
-- 插入初始數據
-- =====================================================

-- 插入系統設定
INSERT INTO `system_settings` (`id`, `key`, `value`, `description`, `category`, `is_public`) VALUES
(UUID(), 'site_name', '強茂集團 AI 展示平台', '網站名稱', 'general', TRUE),
(UUID(), 'site_description', '企業內部 AI 應用展示與競賽管理系統', '網站描述', 'general', TRUE),
(UUID(), 'max_team_size', '5', '最大團隊人數', 'competition', FALSE),
(UUID(), 'max_file_size', '10485760', '最大文件上傳大小（字節）', 'upload', FALSE),
(UUID(), 'allowed_file_types', 'jpg,jpeg,png,gif,pdf,doc,docx,ppt,pptx', '允許上傳的文件類型', 'upload', FALSE);

-- 插入 AI 助手配置
INSERT INTO `ai_assistant_configs` (`id`, `api_key`, `api_url`, `model`, `max_tokens`, `temperature`, `system_prompt`, `is_active`) VALUES
(UUID(), 'sk-3640dcff23fe4a069a64f536ac538d75', 'https://api.deepseek.com/v1/chat/completions', 'deepseek-chat', 200, 0.70, '你是一個競賽管理系統的AI助手，專門幫助用戶了解如何使用這個系統。請用友善、專業的語氣回答用戶問題，並提供具體的操作步驟。回答要簡潔明瞭，避免過長的文字。重要：請不要使用任何Markdown格式，只使用純文字回答。回答時請使用繁體中文。', TRUE);

-- =====================================================
-- 完成
-- =====================================================
SELECT '資料庫結構創建完成！' as message;