package models

import (
	"platform/web/core"

	"github.com/shopspring/decimal"
)

// Bill 账单表
type Bill struct {
	core.Model
	UserID     int32           `json:"user_id" gorm:"column:user_id"`         // 用户ID
	TradeID    *int32          `json:"trade_id" gorm:"column:trade_id"`       // 订单ID
	ResourceID *int32          `json:"resource_id" gorm:"column:resource_id"` // 套餐ID
	RefundID   *int32          `json:"refund_id" gorm:"column:refund_id"`     // 退款ID
	BillNo     string          `json:"bill_no" gorm:"column:bill_no"`         // 易读账单号
	Info       *string         `json:"info" gorm:"column:info"`               // 产品可读信息
	Type       BillType        `json:"type" gorm:"column:type"`               // 账单类型：1-消费，2-退款，3-充值
	Amount     decimal.Decimal `json:"amount" gorm:"column:amount"`           // 账单金额

	User     *User     `json:"user,omitempty" gorm:"foreignKey:UserID"`
	Trade    *Trade    `json:"trade,omitempty" gorm:"foreignKey:TradeID"`
	Resource *Resource `json:"resource,omitempty" gorm:"foreignKey:ResourceID"`
	Refund   *Refund   `json:"refund,omitempty" gorm:"foreignKey:RefundID"`
}

// BillType 账单类型枚举
type BillType int

const (
	BillTypeConsume  BillType = 1 // 消费
	BillTypeRefund   BillType = 2 // 退款
	BillTypeRecharge BillType = 3 // 充值
)