// 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'
  }
};