// 数据库连接和模型定义
const { Sequelize } = require('sequelize');
const config = require('../config/database.js');

// 根据环境变量选择配置
const env = process.env.NODE_ENV || 'development';
const dbConfig = config[env];

// 创建Sequelize实例
const sequelize = new Sequelize(
  dbConfig.database,
  dbConfig.username,
  dbConfig.password,
  {
    host: dbConfig.host,
    port: dbConfig.port,
    dialect: dbConfig.dialect,
    dialectOptions: dbConfig.dialectOptions,
    timezone: dbConfig.timezone,
    logging: dbConfig.logging,
    pool: dbConfig.pool
  }
);

// 导入模型定义
const defineOrder = require('./order.js');

// 测试数据库连接
const testConnection = async () => {
  try {
    await sequelize.authenticate();
    console.log('✅ 数据库连接成功');
    return true;
  } catch (error) {
    console.error('❌ 数据库连接失败:', error);
    return false;
  }
};

// 定义模型
const models = {
  sequelize,
  Sequelize,
  
  // 用户模型（匹配实际数据库结构）
  User: sequelize.define('User', {
    id: {
      type: Sequelize.INTEGER,
      primaryKey: true,
      autoIncrement: true
    },
    openid: {
      type: Sequelize.STRING(64),
      allowNull: false,
      unique: true
    },
    nickname: {
      type: Sequelize.STRING(50),
      allowNull: false
    },
    avatar: {
      type: Sequelize.STRING(255)
    },
    gender: {
      type: Sequelize.ENUM('male', 'female', 'other')
    },
    birthday: {
      type: Sequelize.DATE
    },
    phone: {
      type: Sequelize.STRING(20),
      unique: true
    },
    email: {
      type: Sequelize.STRING(100),
      unique: true
    },
    uuid: {
      type: Sequelize.STRING(36),
      unique: true
    }
  }, {
    tableName: 'users',
    timestamps: true,
    createdAt: 'created_at',
    updatedAt: 'updated_at'
  }),
  
  // 为了兼容现有API，创建一个简化版的用户模型
  ApiUser: sequelize.define('ApiUser', {
    id: {
      type: Sequelize.INTEGER,
      primaryKey: true,
      autoIncrement: true
    },
    username: {
      type: Sequelize.STRING(50),
      allowNull: false,
      unique: true
    },
    password_hash: {
      type: Sequelize.STRING(255),
      allowNull: false
    },
    phone: {
      type: Sequelize.STRING(20),
      allowNull: false,
      unique: true
    },
    email: {
      type: Sequelize.STRING(100)
    },
    user_type: {
      type: Sequelize.ENUM('client', 'supplier', 'driver', 'staff', 'admin'),
      allowNull: false
    },
    status: {
      type: Sequelize.ENUM('active', 'inactive', 'locked'),
      defaultValue: 'active'
    }
  }, {
    tableName: 'api_users',
    timestamps: true
  }),
  
  // 订单模型
  Order: defineOrder(sequelize)
};

// 同步数据库模型
const syncModels = async () => {
  try {
    // 同步API用户表（如果不存在则创建）
    await models.ApiUser.sync({ alter: true });
    console.log('✅ API用户表同步成功');
    
    // 同步订单表（如果不存在则创建）
    await models.Order.sync({ alter: true });
    console.log('✅ 订单表同步成功');
    
    console.log('✅ 数据库模型同步完成');
  } catch (error) {
    console.error('❌ 数据库模型同步失败:', error);
  }
};

module.exports = {
  ...models,
  testConnection,
  syncModels
};