-- AI智能自动化PaaS平台 - 完整数据库建表脚本
-- 数据库: MySQL 8
-- 编码: utf8mb4

CREATE DATABASE IF NOT EXISTS aiflow DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
USE aiflow;

-- ============================================================
-- 用户与权限相关表
-- ============================================================

-- 用户表
CREATE TABLE IF NOT EXISTS users (
    id VARCHAR(36) PRIMARY KEY,
    username VARCHAR(50) NOT NULL UNIQUE,
    email VARCHAR(100) DEFAULT NULL,
    phone VARCHAR(20) DEFAULT NULL,
    password_hash VARCHAR(255) NOT NULL,
    avatar VARCHAR(500) DEFAULT NULL,
    role ENUM('user', 'admin') NOT NULL DEFAULT 'user',
    status ENUM('active', 'banned') NOT NULL DEFAULT 'active',
    real_name_status ENUM('unverified', 'verified') NOT NULL DEFAULT 'unverified',
    real_name VARCHAR(50) DEFAULT NULL,
    id_card VARCHAR(20) DEFAULT NULL,
    membership_plan_id VARCHAR(36) DEFAULT NULL,
    membership_level INT DEFAULT 0,
    membership_expire_at DATETIME DEFAULT NULL,
    auto_renew TINYINT(1) DEFAULT 0,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_users_email (email),
    INDEX idx_users_phone (phone),
    INDEX idx_users_role (role),
    INDEX idx_users_status (status)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 登录日志表
CREATE TABLE IF NOT EXISTS login_logs (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    ip VARCHAR(45) DEFAULT NULL,
    user_agent VARCHAR(500) DEFAULT NULL,
    login_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_login_logs_user (user_id),
    INDEX idx_login_logs_time (login_at),
    FOREIGN KEY (user_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- API密钥表
CREATE TABLE IF NOT EXISTS api_keys (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    api_key VARCHAR(64) NOT NULL UNIQUE,
    secret VARCHAR(128) NOT NULL,
    name VARCHAR(100) DEFAULT NULL,
    status ENUM('active', 'revoked') NOT NULL DEFAULT 'active',
    last_used_at DATETIME DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    expired_at DATETIME DEFAULT NULL,
    INDEX idx_api_keys_user (user_id),
    INDEX idx_api_keys_key (api_key),
    FOREIGN KEY (user_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- ============================================================
-- AI聊天与频道相关表
-- ============================================================

-- 对话会话表
CREATE TABLE IF NOT EXISTS conversations (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    title VARCHAR(200) NOT NULL DEFAULT '新对话',
    model_id VARCHAR(36) DEFAULT NULL,
    status ENUM('active', 'archived') NOT NULL DEFAULT 'active',
    pinned TINYINT(1) DEFAULT 0,
    knowledge_graph_count INT DEFAULT 0,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_conv_user (user_id),
    INDEX idx_conv_status (status),
    INDEX idx_conv_updated (updated_at),
    FOREIGN KEY (user_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 对话消息表
CREATE TABLE IF NOT EXISTS messages (
    id VARCHAR(36) PRIMARY KEY,
    conversation_id VARCHAR(36) NOT NULL,
    role ENUM('user', 'assistant', 'system') NOT NULL,
    content TEXT NOT NULL,
    token_used INT DEFAULT 0,
    model_id VARCHAR(36) DEFAULT NULL,
    knowledge_ids JSON DEFAULT NULL,
    agent_ids JSON DEFAULT NULL,
    skill_ids JSON DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_msg_conv (conversation_id),
    INDEX idx_msg_created (created_at),
    FOREIGN KEY (conversation_id) REFERENCES conversations(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 频道表
CREATE TABLE IF NOT EXISTS channels (
    id VARCHAR(36) PRIMARY KEY,
    owner_id VARCHAR(36) NOT NULL,
    name VARCHAR(100) NOT NULL,
    description TEXT DEFAULT NULL,
    platform ENUM('feishu', 'wechat', 'dingtalk', 'whatsapp', 'telegram', 'slack') NOT NULL,
    account_name VARCHAR(100) DEFAULT NULL,
    default_agent_id VARCHAR(36) DEFAULT NULL,
    default_skill_id VARCHAR(36) DEFAULT NULL,
    knowledge_base_id VARCHAR(36) DEFAULT NULL,
    bound_model_id VARCHAR(36) DEFAULT NULL,
    features JSON DEFAULT NULL,
    status ENUM('connected', 'pending', 'disconnected') NOT NULL DEFAULT 'pending',
    last_active DATETIME DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_ch_owner (owner_id),
    INDEX idx_ch_status (status),
    FOREIGN KEY (owner_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 频道成员表
CREATE TABLE IF NOT EXISTS channel_members (
    id VARCHAR(36) PRIMARY KEY,
    channel_id VARCHAR(36) NOT NULL,
    user_id VARCHAR(36) NOT NULL,
    role ENUM('owner', 'member') NOT NULL DEFAULT 'member',
    joined_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_cm_channel (channel_id),
    INDEX idx_cm_user (user_id),
    UNIQUE KEY uk_channel_user (channel_id, user_id),
    FOREIGN KEY (channel_id) REFERENCES channels(id),
    FOREIGN KEY (user_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 频道消息表
CREATE TABLE IF NOT EXISTS channel_messages (
    id VARCHAR(36) PRIMARY KEY,
    channel_id VARCHAR(36) NOT NULL,
    user_id VARCHAR(36) NOT NULL,
    role ENUM('user', 'assistant', 'system') NOT NULL,
    content TEXT NOT NULL,
    token_used INT DEFAULT 0,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_chmsg_channel (channel_id),
    FOREIGN KEY (channel_id) REFERENCES channels(id),
    FOREIGN KEY (user_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- ============================================================
-- 知识库相关表
-- ============================================================

-- 知识库表
CREATE TABLE IF NOT EXISTS knowledge_bases (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    name VARCHAR(200) NOT NULL,
    description TEXT DEFAULT NULL,
    directory_path VARCHAR(500) DEFAULT '/',
    document_count INT DEFAULT 0,
    knowledge_graph_count INT DEFAULT 0,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_kb_user (user_id),
    FOREIGN KEY (user_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 知识目录表
CREATE TABLE IF NOT EXISTS knowledge_directories (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    knowledge_base_id VARCHAR(36) DEFAULT NULL,
    parent_id VARCHAR(36) DEFAULT NULL,
    name VARCHAR(200) NOT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_kd_user (user_id),
    INDEX idx_kd_kb (knowledge_base_id),
    INDEX idx_kd_parent (parent_id),
    FOREIGN KEY (user_id) REFERENCES users(id),
    FOREIGN KEY (knowledge_base_id) REFERENCES knowledge_bases(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 知识文档表
CREATE TABLE IF NOT EXISTS knowledge_documents (
    id VARCHAR(36) PRIMARY KEY,
    knowledge_base_id VARCHAR(36) NOT NULL,
    directory_id VARCHAR(36) DEFAULT NULL,
    filename VARCHAR(255) NOT NULL,
    file_type VARCHAR(20) NOT NULL,
    file_size BIGINT DEFAULT 0,
    file_path VARCHAR(500) DEFAULT NULL,
    status ENUM('uploading', 'processing', 'completed', 'failed') NOT NULL DEFAULT 'uploading',
    chunk_count INT DEFAULT 0,
    error_message TEXT DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_kdoc_kb (knowledge_base_id),
    INDEX idx_kdoc_dir (directory_id),
    INDEX idx_kdoc_status (status),
    FOREIGN KEY (knowledge_base_id) REFERENCES knowledge_bases(id),
    FOREIGN KEY (directory_id) REFERENCES knowledge_directories(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- ============================================================
-- 应用市场相关表
-- ============================================================

-- 应用市场表
CREATE TABLE IF NOT EXISTS market_apps (
    id VARCHAR(36) PRIMARY KEY,
    name VARCHAR(200) NOT NULL,
    type ENUM('skill', 'agent', 'mcp') NOT NULL,
    source ENUM('official', 'user') NOT NULL DEFAULT 'user',
    publisher_id VARCHAR(36) DEFAULT NULL,
    publisher_name VARCHAR(100) DEFAULT NULL,
    description TEXT DEFAULT NULL,
    icon VARCHAR(500) DEFAULT NULL,
    tutorial TEXT DEFAULT NULL,
    price DECIMAL(10,2) NOT NULL DEFAULT 0.00,
    is_member_free TINYINT(1) DEFAULT 0,
    join_promotion TINYINT(1) DEFAULT 0,
    status ENUM('pending', 'published', 'removed') NOT NULL DEFAULT 'pending',
    rating_avg DECIMAL(3,2) DEFAULT 0.00,
    review_count INT DEFAULT 0,
    install_count INT DEFAULT 0,
    skill_content TEXT DEFAULT NULL,
    mcp_transport ENUM('streamable_http', 'sse') DEFAULT NULL,
    agent_endpoint VARCHAR(500) DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_ma_type (type),
    INDEX idx_ma_source (source),
    INDEX idx_ma_publisher (publisher_id),
    INDEX idx_ma_status (status),
    FOREIGN KEY (publisher_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 应用购买表
CREATE TABLE IF NOT EXISTS app_purchases (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    app_id VARCHAR(36) NOT NULL,
    price DECIMAL(10,2) NOT NULL,
    order_id VARCHAR(36) DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_ap_user (user_id),
    INDEX idx_ap_app (app_id),
    FOREIGN KEY (user_id) REFERENCES users(id),
    FOREIGN KEY (app_id) REFERENCES market_apps(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 应用评价表
CREATE TABLE IF NOT EXISTS app_reviews (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    app_id VARCHAR(36) NOT NULL,
    rating TINYINT NOT NULL CHECK (rating >= 1 AND rating <= 5),
    content TEXT DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    UNIQUE KEY uk_user_app_review (user_id, app_id),
    INDEX idx_ar_app (app_id),
    FOREIGN KEY (user_id) REFERENCES users(id),
    FOREIGN KEY (app_id) REFERENCES market_apps(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 应用安装表
CREATE TABLE IF NOT EXISTS app_installations (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    app_id VARCHAR(36) NOT NULL,
    installed_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    UNIQUE KEY uk_user_app_install (user_id, app_id),
    INDEX idx_ai_user (user_id),
    INDEX idx_ai_app (app_id),
    FOREIGN KEY (user_id) REFERENCES users(id),
    FOREIGN KEY (app_id) REFERENCES market_apps(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- ============================================================
-- 付费与订单相关表
-- ============================================================

-- 会员等级表
CREATE TABLE IF NOT EXISTS membership_plans (
    id VARCHAR(36) PRIMARY KEY,
    name VARCHAR(100) NOT NULL,
    level INT NOT NULL DEFAULT 0,
    duration_type ENUM('month', 'quarter', 'year') NOT NULL,
    price DECIMAL(10,2) NOT NULL,
    daily_free_tokens INT DEFAULT 0,
    features JSON DEFAULT NULL,
    free_app_ids JSON DEFAULT NULL,
    free_model_ids JSON DEFAULT NULL,
    is_active TINYINT(1) DEFAULT 1,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_mp_level (level),
    INDEX idx_mp_duration (duration_type)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 用户订阅表
CREATE TABLE IF NOT EXISTS membership_subscriptions (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    plan_id VARCHAR(36) NOT NULL,
    order_id VARCHAR(36) DEFAULT NULL,
    start_at DATETIME NOT NULL,
    end_at DATETIME NOT NULL,
    auto_renew TINYINT(1) DEFAULT 0,
    status ENUM('active', 'expired', 'downgraded') NOT NULL DEFAULT 'active',
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_ms_user (user_id),
    INDEX idx_ms_plan (plan_id),
    INDEX idx_ms_status (status),
    INDEX idx_ms_end (end_at),
    FOREIGN KEY (user_id) REFERENCES users(id),
    FOREIGN KEY (plan_id) REFERENCES membership_plans(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 订单表
CREATE TABLE IF NOT EXISTS orders (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    order_type ENUM('membership', 'service', 'app') NOT NULL,
    item_id VARCHAR(36) DEFAULT NULL,
    item_name VARCHAR(200) DEFAULT NULL,
    amount DECIMAL(10,2) NOT NULL,
    coupon_id VARCHAR(36) DEFAULT NULL,
    discount_amount DECIMAL(10,2) DEFAULT 0.00,
    payment_method ENUM('wechat', 'alipay') DEFAULT NULL,
    payment_id VARCHAR(200) DEFAULT NULL,
    status ENUM('pending', 'paid', 'refunded', 'cancelled') NOT NULL DEFAULT 'pending',
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_ord_user (user_id),
    INDEX idx_ord_type (order_type),
    INDEX idx_ord_status (status),
    FOREIGN KEY (user_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 优惠券表
CREATE TABLE IF NOT EXISTS coupons (
    id VARCHAR(36) PRIMARY KEY,
    code VARCHAR(50) NOT NULL UNIQUE,
    type ENUM('fixed', 'percent') NOT NULL,
    value DECIMAL(10,2) NOT NULL,
    min_amount DECIMAL(10,2) DEFAULT 0.00,
    valid_from DATETIME NOT NULL,
    valid_to DATETIME NOT NULL,
    total_count INT DEFAULT NULL,
    used_count INT DEFAULT 0,
    status ENUM('active', 'expired', 'disabled') NOT NULL DEFAULT 'active',
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_cp_code (code),
    INDEX idx_cp_status (status)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 用户优惠券表
CREATE TABLE IF NOT EXISTS user_coupons (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    coupon_id VARCHAR(36) NOT NULL,
    status ENUM('unused', 'used', 'expired') NOT NULL DEFAULT 'unused',
    used_at DATETIME DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_uc_user (user_id),
    INDEX idx_uc_coupon (coupon_id),
    INDEX idx_uc_status (status),
    FOREIGN KEY (user_id) REFERENCES users(id),
    FOREIGN KEY (coupon_id) REFERENCES coupons(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 增值服务表
CREATE TABLE IF NOT EXISTS value_added_services (
    id VARCHAR(36) PRIMARY KEY,
    name VARCHAR(200) NOT NULL,
    description TEXT DEFAULT NULL,
    price DECIMAL(10,2) NOT NULL,
    type ENUM('skill', 'agent', 'mcp', 'report', 'custom') NOT NULL,
    status VARCHAR(10) NOT NULL DEFAULT 'active',
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_vas_type (type),
    INDEX idx_vas_status (status)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 定制服务订单表
CREATE TABLE IF NOT EXISTS custom_service_orders (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    service_id VARCHAR(36) DEFAULT NULL,
    service_type ENUM('skill', 'agent', 'mcp') NOT NULL,
    description TEXT DEFAULT NULL,
    status ENUM('pending', 'accepted', 'in_progress', 'completed', 'cancelled') NOT NULL DEFAULT 'pending',
    price DECIMAL(10,2) DEFAULT 0.00,
    order_id VARCHAR(36) DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_cso_user (user_id),
    INDEX idx_cso_status (status),
    FOREIGN KEY (user_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- ============================================================
-- Token与计费相关表
-- ============================================================

-- 模型供应商表
CREATE TABLE IF NOT EXISTS model_providers (
    id VARCHAR(36) PRIMARY KEY,
    name VARCHAR(100) NOT NULL,
    protocol VARCHAR(30) NOT NULL DEFAULT 'openai_compatible',
    api_key VARCHAR(255) DEFAULT NULL,
    api_base_url VARCHAR(500) DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 大模型表
CREATE TABLE IF NOT EXISTS models (
    id VARCHAR(36) PRIMARY KEY,
    provider_id VARCHAR(36) NOT NULL,
    name VARCHAR(100) NOT NULL,
    api_key VARCHAR(255) DEFAULT NULL,
    endpoint VARCHAR(500) DEFAULT NULL,
    capabilities JSON DEFAULT NULL,
    timeout INT DEFAULT 60,
    status ENUM('free', 'paid') NOT NULL DEFAULT 'paid',
    price_per_million_tokens DECIMAL(10,4) NOT NULL DEFAULT 0.0000,
    is_enabled TINYINT(1) DEFAULT 1,
    total_calls BIGINT DEFAULT 0,
    total_tokens BIGINT DEFAULT 0,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_m_provider (provider_id),
    INDEX idx_m_enabled (is_enabled),
    INDEX idx_m_status (status),
    FOREIGN KEY (provider_id) REFERENCES model_providers(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- Token消耗日志表（不可删除）
CREATE TABLE IF NOT EXISTS token_usage_logs (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    model_id VARCHAR(36) DEFAULT NULL,
    model_name VARCHAR(100) DEFAULT NULL,
    app_id VARCHAR(36) DEFAULT NULL,
    app_name VARCHAR(200) DEFAULT NULL,
    conversation_id VARCHAR(36) DEFAULT NULL,
    prompt_tokens INT DEFAULT 0,
    completion_tokens INT DEFAULT 0,
    total_tokens INT DEFAULT 0,
    cost DECIMAL(10,6) DEFAULT 0.000000,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_tul_user (user_id),
    INDEX idx_tul_model (model_id),
    INDEX idx_tul_created (created_at),
    FOREIGN KEY (user_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- Token余额表
CREATE TABLE IF NOT EXISTS token_balances (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL UNIQUE,
    total_consumed BIGINT DEFAULT 0,
    balance BIGINT DEFAULT 0,
    daily_free_used BIGINT DEFAULT 0,
    daily_free_date DATE DEFAULT NULL,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_tb_user (user_id),
    FOREIGN KEY (user_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- ============================================================
-- 通知与日志相关表
-- ============================================================

-- 通知表
CREATE TABLE IF NOT EXISTS notifications (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    type ENUM('announcement', 'reminder', 'renewal', 'order', 'update') NOT NULL,
    title VARCHAR(200) NOT NULL,
    content TEXT DEFAULT NULL,
    is_read TINYINT(1) DEFAULT 0,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_notif_user (user_id),
    INDEX idx_notif_type (type),
    INDEX idx_notif_read (is_read),
    FOREIGN KEY (user_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 操作日志表（不可手动删除 - 应用层禁止DELETE）
CREATE TABLE IF NOT EXISTS operation_logs (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    username VARCHAR(50) DEFAULT NULL,
    action VARCHAR(100) NOT NULL,
    target VARCHAR(100) DEFAULT NULL,
    target_id VARCHAR(36) DEFAULT NULL,
    detail TEXT DEFAULT NULL,
    ip VARCHAR(45) DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_ol_user (user_id),
    INDEX idx_ol_action (action),
    INDEX idx_ol_created (created_at)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 审计日志表（管理员操作 - 不可手动删除）
CREATE TABLE IF NOT EXISTS audit_logs (
    id VARCHAR(36) PRIMARY KEY,
    admin_id VARCHAR(36) NOT NULL,
    admin_name VARCHAR(50) DEFAULT NULL,
    action VARCHAR(100) NOT NULL,
    target_type VARCHAR(50) DEFAULT NULL,
    target_id VARCHAR(36) DEFAULT NULL,
    detail TEXT DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_al_admin (admin_id),
    INDEX idx_al_action (action),
    INDEX idx_al_created (created_at)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 风控规则表
CREATE TABLE IF NOT EXISTS risk_rules (
    id VARCHAR(36) PRIMARY KEY,
    name VARCHAR(100) NOT NULL,
    type ENUM('rate_limit', 'ban', 'alert') NOT NULL,
    threshold INT DEFAULT 0,
    duration INT DEFAULT 3600,
    is_enabled TINYINT(1) DEFAULT 1,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_rr_enabled (is_enabled)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- ============================================================
-- 系统配置相关表
-- ============================================================

-- 网站设置表
CREATE TABLE IF NOT EXISTS site_settings (
    id VARCHAR(36) PRIMARY KEY,
    `key` VARCHAR(100) NOT NULL UNIQUE,
    `value` TEXT DEFAULT NULL,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 邮箱配置表
CREATE TABLE IF NOT EXISTS email_configs (
    id VARCHAR(36) PRIMARY KEY,
    smtp_host VARCHAR(200) NOT NULL,
    smtp_port INT NOT NULL DEFAULT 587,
    username VARCHAR(200) NOT NULL,
    password VARCHAR(200) NOT NULL,
    from_address VARCHAR(200) NOT NULL,
    use_tls TINYINT(1) DEFAULT 1,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 短信配置表
CREATE TABLE IF NOT EXISTS sms_configs (
    id VARCHAR(36) PRIMARY KEY,
    provider VARCHAR(50) NOT NULL,
    api_key VARCHAR(200) NOT NULL,
    api_secret VARCHAR(200) NOT NULL,
    sign_name VARCHAR(100) DEFAULT NULL,
    template_code VARCHAR(100) DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 支付配置表
CREATE TABLE IF NOT EXISTS payment_configs (
    id VARCHAR(36) PRIMARY KEY,
    type ENUM('wechat', 'alipay') NOT NULL,
    app_id VARCHAR(100) NOT NULL,
    merchant_id VARCHAR(100) DEFAULT NULL,
    api_key VARCHAR(255) NOT NULL,
    cert_path VARCHAR(500) DEFAULT NULL,
    gateway_url VARCHAR(500) DEFAULT NULL,
    status ENUM('active', 'inactive') NOT NULL DEFAULT 'inactive',
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_pc_type (type)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 注册设置表
CREATE TABLE IF NOT EXISTS register_settings (
    id VARCHAR(36) PRIMARY KEY,
    phone_required TINYINT(1) DEFAULT 1,
    phone_sms_required TINYINT(1) DEFAULT 1,
    email_required TINYINT(1) DEFAULT 1,
    email_verify_required TINYINT(1) DEFAULT 1,
    real_name_required TINYINT(1) DEFAULT 0,
    aliyun_access_key VARCHAR(200) DEFAULT NULL,
    aliyun_secret_key VARCHAR(200) DEFAULT NULL,
    aliyun_endpoint VARCHAR(200) DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- ============================================================
-- 广告位管理表
-- ============================================================

-- 广告轮播图表
CREATE TABLE IF NOT EXISTS ad_banners (
    id VARCHAR(36) PRIMARY KEY,
    title VARCHAR(200) NOT NULL,
    image_url VARCHAR(500) DEFAULT NULL,
    link_app_id VARCHAR(36) DEFAULT NULL,
    link_app_name VARCHAR(200) DEFAULT NULL,
    sort_order INT DEFAULT 0,
    click_count INT DEFAULT 0,
    status ENUM('active', 'inactive') NOT NULL DEFAULT 'active',
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_ab_status (status),
    INDEX idx_ab_order (sort_order)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- ============================================================
-- 资产管理相关表
-- ============================================================

-- 资产分类表
CREATE TABLE IF NOT EXISTS asset_categories (
    id VARCHAR(36) PRIMARY KEY,
    name VARCHAR(100) NOT NULL,
    type ENUM('file', 'novel', 'image', 'video', 'audio', 'custom') NOT NULL,
    icon VARCHAR(200) DEFAULT NULL,
    color VARCHAR(20) DEFAULT NULL,
    is_default TINYINT(1) DEFAULT 0,
    user_id VARCHAR(36) DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_ac_type (type),
    INDEX idx_ac_user (user_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 资产表
CREATE TABLE IF NOT EXISTS assets (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    name VARCHAR(200) NOT NULL,
    category ENUM('file', 'novel', 'image', 'video', 'audio', 'custom') NOT NULL,
    sub_category VARCHAR(50) DEFAULT NULL,
    file_type VARCHAR(50) DEFAULT NULL,
    size BIGINT DEFAULT 0,
    description TEXT DEFAULT NULL,
    cover_url VARCHAR(500) DEFAULT NULL,
    url VARCHAR(500) DEFAULT NULL,
    novel_meta JSON DEFAULT NULL,
    status ENUM('active', 'deleted') NOT NULL DEFAULT 'active',
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_ast_user (user_id),
    INDEX idx_ast_category (category),
    INDEX idx_ast_status (status),
    FOREIGN KEY (user_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 小说章节表
CREATE TABLE IF NOT EXISTS novel_chapters (
    id VARCHAR(36) PRIMARY KEY,
    asset_id VARCHAR(36) NOT NULL,
    title VARCHAR(200) NOT NULL,
    word_count INT DEFAULT 0,
    sort_order INT DEFAULT 0,
    content LONGTEXT DEFAULT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_nc_asset (asset_id),
    INDEX idx_nc_order (sort_order),
    FOREIGN KEY (asset_id) REFERENCES assets(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- ============================================================
-- 预留扩展表
-- ============================================================

-- 团队表（预留）
CREATE TABLE IF NOT EXISTS teams (
    id VARCHAR(36) PRIMARY KEY,
    owner_id VARCHAR(36) NOT NULL,
    name VARCHAR(100) NOT NULL,
    description TEXT DEFAULT NULL,
    status ENUM('active', 'archived') NOT NULL DEFAULT 'active',
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    INDEX idx_team_owner (owner_id),
    FOREIGN KEY (owner_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- 分销推广表（预留）
CREATE TABLE IF NOT EXISTS referrals (
    id VARCHAR(36) PRIMARY KEY,
    referrer_id VARCHAR(36) NOT NULL,
    referee_id VARCHAR(36) NOT NULL,
    referral_code VARCHAR(50) DEFAULT NULL,
    status ENUM('pending', 'active', 'cancelled') NOT NULL DEFAULT 'pending',
    commission_rate DECIMAL(5,2) DEFAULT 0.00,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_ref_referrer (referrer_id),
    INDEX idx_ref_referee (referee_id),
    FOREIGN KEY (referrer_id) REFERENCES users(id),
    FOREIGN KEY (referee_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- API开放平台表（预留）
CREATE TABLE IF NOT EXISTS open_api_clients (
    id VARCHAR(36) PRIMARY KEY,
    user_id VARCHAR(36) NOT NULL,
    name VARCHAR(100) NOT NULL,
    client_id VARCHAR(64) NOT NULL UNIQUE,
    client_secret VARCHAR(128) NOT NULL,
    allowed_models JSON DEFAULT NULL,
    rate_limit INT DEFAULT 60,
    status ENUM('active', 'suspended') NOT NULL DEFAULT 'active',
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_oac_user (user_id),
    FOREIGN KEY (user_id) REFERENCES users(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;