package models

import (
	"time"
)

// PurchaseOrder 买单表
type PurchaseOrder struct {
	ID                uint       `gorm:"primaryKey;autoIncrement" json:"id"`
	OrderNo           string     `gorm:"type:varchar(50);not null;uniqueIndex;comment:订单编号" json:"order_no"`
	BuyerID           uint       `gorm:"type:int;not null;comment:买家用户ID" json:"buyer_id" binding:"required"`
	SellerID          *uint      `gorm:"type:int;comment:卖家用户ID（二级商品交易时使用）" json:"seller_id"`
	ProductID         uint       `gorm:"type:int;not null;comment:商品ID" json:"product_id" binding:"required"`
	ProductType       uint8      `gorm:"type:tinyint;not null;comment:商品类型：1一级商品，2二级商品" json:"product_type" binding:"required"`
	ProductName       string     `gorm:"type:varchar(200);not null;comment:商品名称" json:"product_name" binding:"required"`
	ProductImages     string     `gorm:"type:text;comment:商品图片URLs，逗号分割" json:"product_images"`
	UnitPrice         float64    `gorm:"type:decimal(10,2);not null;comment:单价" json:"unit_price" binding:"required"`
	Quantity          int        `gorm:"type:int;not null;default:1;comment:数量" json:"quantity"`
	TotalAmount       float64    `gorm:"type:decimal(10,2);not null;comment:总金额" json:"total_amount" binding:"required"`
	AddressID         *uint      `gorm:"type:int;comment:收货地址ID" json:"address_id"`
	OrderStatus       uint8      `gorm:"type:tinyint;not null;default:0;comment:订单状态：0待付款，1待确认，2已完成，3已取消" json:"order_status"`
	ConfirmTime       *time.Time `gorm:"type:timestamp;null;comment:确认时间" json:"confirm_time"`
	Remark            string     `gorm:"type:text;comment:备注" json:"remark"`
	CreatedAt         time.Time  `gorm:"type:timestamp;default:CURRENT_TIMESTAMP" json:"created_at"`
	UpdatedAt         time.Time  `gorm:"type:timestamp;default:CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP" json:"updated_at"`
	PaymentProofImage string     `gorm:"type:varchar(255)" json:"payment_proof_image"`
	// 关联关系
	Buyer   User         `gorm:"foreignKey:BuyerID" json:"buyer,omitempty"`
	Seller  *User        `gorm:"foreignKey:SellerID" json:"seller,omitempty"`
	Address *UserAddress `gorm:"foreignKey:AddressID" json:"address,omitempty"`
}

func (PurchaseOrder) TableName() string {
	return "purchase_orders"
}