重构后端服务架构并优化前端错误处理

backend/models/index.js

@@ -0,0 +1,140 @@
+// 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
+  }
+);
+
+// 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
+  })
+};
+
+// 同步数据库模型
+const syncModels = async () => {
+  try {
+    // 只同步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');
+    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
+};