const { Sequelize } = require('sequelize');
require('dotenv').config();

// 数据库连接配置
const sequelize = new Sequelize({
  host: process.env.DB_HOST || '129.211.213.226',
  port: process.env.DB_PORT || 9527,
  database: process.env.DB_NAME || 'jiebandata',
  username: process.env.DB_USER || 'root',
  password: process.env.DB_PASSWORD || 'aiotAiot123!',
  dialect: process.env.DB_DIALECT || 'mysql',
  logging: process.env.NODE_ENV === 'development' ? console.log : false,
  pool: {
    max: 5,
    min: 0,
    acquire: 30000,
    idle: 10000
  },
  define: {
    timestamps: true,
    underscored: true,
    freezeTableName: true
  },
  timezone: '+08:00'
});

// 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.message);
    return false;
  }
};

// 同步数据库模型
const syncDatabase = async (options = {}) => {
  try {
    await sequelize.sync(options);
    console.log('✅ 数据库同步成功');
  } catch (error) {
    console.error('❌ 数据库同步失败:', error);
    throw error;
  }
};

module.exports = {
  sequelize,
  testConnection,
  syncDatabase,
  Sequelize
};