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config/constants.js

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+// 系统常量配置
+module.exports = {
+  // 转账类型
+  TRANSFER_TYPES: {
+    USER_TO_USER: 'user_to_user',
+    SYSTEM_TO_USER: 'system_to_user',
+    USER_TO_SYSTEM: 'user_to_system'
+  },
+
+  // 转账状态
+  TRANSFER_STATUS: {
+    PENDING: 'pending',
+    CONFIRMED: 'confirmed',
+    RECEIVED: 'received',
+    REJECTED: 'rejected',
+    CANCELLED: 'cancelled',
+    NOT_RECEIVED: 'not_received',
+    FAILED: 'failed'
+  },
+
+  // 用户角色
+  USER_ROLES: {
+    ADMIN: 'admin',
+    USER: 'user'
+  },
+
+  // 订单状态
+  ORDER_STATUS: {
+    PENDING: 'pending',
+    PAID: 'paid',
+    SHIPPED: 'shipped',
+    DELIVERED: 'delivered',
+    CANCELLED: 'cancelled'
+  },
+
+  // 错误代码
+  ERROR_CODES: {
+    VALIDATION_ERROR: 'VALIDATION_ERROR',
+    AUTHENTICATION_ERROR: 'AUTHENTICATION_ERROR',
+    AUTHORIZATION_ERROR: 'AUTHORIZATION_ERROR',
+    NOT_FOUND: 'NOT_FOUND',
+    DUPLICATE_ENTRY: 'DUPLICATE_ENTRY',
+    DATABASE_ERROR: 'DATABASE_ERROR',
+    INTERNAL_ERROR: 'INTERNAL_ERROR'
+  },
+
+  // HTTP状态码
+  HTTP_STATUS: {
+    OK: 200,
+    CREATED: 201,
+    BAD_REQUEST: 400,
+    UNAUTHORIZED: 401,
+    FORBIDDEN: 403,
+    NOT_FOUND: 404,
+    CONFLICT: 409,
+    INTERNAL_SERVER_ERROR: 500
+  },
+
+  // 分页默认值
+  PAGINATION: {
+    DEFAULT_PAGE: 1,
+    DEFAULT_LIMIT: 10,
+    MAX_LIMIT: 100
+  },
+
+  // JWT配置
+  JWT: {
+    EXPIRES_IN: '24h'
+  }
+};