package models

import (
	"errors"
	"fmt"
	orm "go-admin/common/global"
	"go-admin/logger"
)

const (
	VmEventBuyGoods      = "buy_goods"
	VmEventOpenMember    = "open_member"
	VmEventInvite1Member = "invite_1_member"
	VmEventInvite2Member = "invite_2_member"
	VmEventUserShareCard = "user_share_card"
	VmEventAttendance    = "attendance"
)

// 用户积分
// gen:qs
//
//go:generate goqueryset -in user_vm.go
type UserVm struct {
	Model

	Uid uint32 `json:"uid" gorm:"column:uid;unique_index"`
	Vm  uint32 `json:"vm"`

	//UserVm uint32 `json:"user_vm"`
}

// 用户积分-变动记录
// gen:qs
type UserVmRecord struct {
	Model

	Uid      uint32 `json:"uid" gorm:"column:uid;unique_index"`
	BeforeVm uint32 `json:"before_vm"`                      // 变动前
	AfterVm  uint32 `json:"after_vm"`                       // 变动后
	Alter    int    `json:"alter"`                          // 数值
	Event    string `json:"event" gorm:"type:varchar(100)"` // 事件
	Describe string `json:"describe" gorm:"type:text"`      // 描述
}

func UserVmUpdate(uid uint32, amount int, event, describe string) error {
	var userVm UserVm
	err := orm.Eloquent.Table("user_vm").
		Where("uid=?", uid).Find(&userVm).Error
	if err != nil {
		logger.Error("share card retrieve cards err:", logger.Field("err", err))
		return err
	}

	begin := orm.Eloquent.Begin()
	if err == RecordNotFound {
		if amount < 0 {
			begin.Rollback()
			logger.Error("amount lt 0")
			return errors.New("amount lt 0")
		}
		userVm = UserVm{
			Uid: uid,
			Vm:  uint32(amount),
		}
		err = begin.Create(&userVm).Error
		if err != nil {
			begin.Rollback()
			logger.Error("err:", logger.Field("err", err))
			return err
		}
	} else {
		sql := fmt.Sprintf("UPDATE user_vm SET vm = vm+? WHERE uid=?;")
		err = begin.Exec(sql, amount, uid).Error
		if err != nil {
			begin.Rollback()
			logger.Error("err:", logger.Field("err", err))
			return err
		}
	}

	vmRecord := &UserVmRecord{
		Uid:      uid,
		BeforeVm: uint32(userVm.Vm),
		AfterVm:  uint32(int(userVm.Vm) + amount),
		Alter:    amount,
		Event:    event,
		Describe: describe,
	}
	err = begin.Create(vmRecord).Error
	if err != nil {
		begin.Rollback()
		logger.Error("err:", logger.Field("err", err))
		return err
	}

	err = begin.Commit().Error
	if err != nil {
		begin.Rollback()
		logger.Error("err:", logger.Field("err", err))
		return err
	}
	return nil
}