重构后端服务架构并优化前端错误处理

go-backend/models/order.go

@@ -0,0 +1,44 @@
+package models
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+type OrderStatus string
+
+const (
+	OrderStatusPending    OrderStatus = "pending"
+	OrderStatusConfirmed  OrderStatus = "confirmed"
+	OrderStatusProcessing OrderStatus = "processing"
+	OrderStatusShipped    OrderStatus = "shipped"
+	OrderStatusDelivered  OrderStatus = "delivered"
+	OrderStatusCancelled  OrderStatus = "cancelled"
+	OrderStatusCompleted  OrderStatus = "completed"
+)
+
+type Order struct {
+	ID             uint        `gorm:"primaryKey" json:"id"`
+	OrderNo        string      `gorm:"uniqueIndex;not null" json:"order_no"`
+	BuyerID        uint        `gorm:"not null" json:"buyer_id"`
+	SellerID       uint        `gorm:"not null" json:"seller_id"`
+	VarietyType    string      `gorm:"not null" json:"variety_type"`
+	WeightRange    string      `gorm:"not null" json:"weight_range"`
+	WeightActual   float64     `json:"weight_actual"`
+	PricePerUnit   float64     `gorm:"not null" json:"price_per_unit"`
+	TotalPrice     float64     `gorm:"not null" json:"total_price"`
+	AdvancePayment float64     `gorm:"default:0.0" json:"advance_payment"`
+	FinalPayment   float64     `gorm:"default:0.0" json:"final_payment"`
+	Status         OrderStatus `gorm:"default:pending" json:"status"`
+	DeliveryAddress string     `json:"delivery_address"`
+	DeliveryTime   *time.Time  `json:"delivery_time"`
+	Remark         string      `json:"remark"`
+	CreatedAt      time.Time   `json:"created_at"`
+	UpdatedAt      time.Time   `json:"updated_at"`
+	DeletedAt      gorm.DeletedAt `gorm:"index" json:"-"`
+}
+
+func (Order) TableName() string {
+	return "orders"
+}

go-backend/models/payment.go

@@ -0,0 +1,44 @@
+package models
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+type PaymentType string
+type PaymentMethod string
+type PaymentStatus string
+
+const (
+	PaymentTypeAdvance PaymentType = "advance"
+	PaymentTypeFinal   PaymentType = "final"
+
+	PaymentMethodWechat PaymentMethod = "wechat"
+	PaymentMethodAlipay PaymentMethod = "alipay"
+	PaymentMethodBank   PaymentMethod = "bank"
+
+	PaymentStatusPending  PaymentStatus = "pending"
+	PaymentStatusSuccess  PaymentStatus = "success"
+	PaymentStatusFailed   PaymentStatus = "failed"
+	PaymentStatusRefunded PaymentStatus = "refunded"
+)
+
+type Payment struct {
+	ID             uint           `gorm:"primaryKey" json:"id"`
+	PaymentNo      string         `gorm:"uniqueIndex;not null" json:"payment_no"`
+	OrderID        uint           `gorm:"not null" json:"order_id"`
+	UserID         uint           `gorm:"not null" json:"user_id"`
+	Amount         float64        `gorm:"not null" json:"amount"`
+	PaymentType    PaymentType    `gorm:"not null" json:"payment_type"`
+	PaymentMethod  PaymentMethod  `gorm:"not null" json:"payment_method"`
+	Status         PaymentStatus  `gorm:"default:pending" json:"status"`
+	TransactionID  string         `json:"transaction_id"`
+	CreatedAt      time.Time      `json:"created_at"`
+	UpdatedAt      time.Time      `json:"updated_at"`
+	DeletedAt      gorm.DeletedAt `gorm:"index" json:"-"`
+}
+
+func (Payment) TableName() string {
+	return "payments"
+}

go-backend/models/user.go

@@ -0,0 +1,38 @@
+package models
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+type UserType string
+type UserStatus string
+
+const (
+	UserTypeClient   UserType = "client"
+	UserTypeSupplier UserType = "supplier"
+	UserTypeDriver   UserType = "driver"
+	UserTypeStaff    UserType = "staff"
+	UserTypeAdmin    UserType = "admin"
+
+	UserStatusActive   UserStatus = "active"
+	UserStatusInactive UserStatus = "inactive"
+	UserStatusLocked   UserStatus = "locked"
+)
+
+type User struct {
+	ID        uint       `gorm:"primaryKey" json:"id"`
+	UUID      string     `gorm:"uniqueIndex;not null" json:"uuid"`
+	Username  string     `gorm:"not null" json:"username"`
+	Password  string     `gorm:"not null" json:"-"`
+	UserType  UserType   `gorm:"default:client" json:"user_type"`
+	Status    UserStatus `gorm:"default:active" json:"status"`
+	CreatedAt time.Time  `json:"created_at"`
+	UpdatedAt time.Time  `json:"updated_at"`
+	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
+}
+
+func (User) TableName() string {
+	return "users"
+}