package utils

import (
	"github.com/gin-gonic/gin"
	"gorm.io/gorm"
	"sfis/db"
	"sfis/lock"
	"sfis/model"
	"sfis/model/response"
)

func Check(appID string, productID int, context *gin.Context, getData func() []interface{}) {
	if userLock := lock.GetUserLock(appID); userLock != nil {
		/**
		第二步:用户接口产品校验-加锁处理
		*/
		//2.1 取用户接口状态校验
		//userLock.Lock()
		userProduct := &model.UserProduct{}
		db.GetSFISDB().First(userProduct, &model.UserProduct{AppID: appID, ProductID: productID})
		//userLock.Unlock()
		if userProduct.InterfaceStatus != 0 {
			response.FailWithDetailed(response.InterfaceDeleted, nil, "该用户接口暂不提供服务", context)
			return
		}

		//2.2 取用户 产品余量|钱包账户余额 校验
		costModel := userProduct.CostModel
		product := GetProductByID(productID)
		productType := product.ProductType
		userLock.Lock()
		db.GetSFISDB().First(userProduct, &model.UserProduct{AppID: appID, ProductID: productID})
		switch costModel {
		case 0:
			//按剩余量扣费
			if productType == 0 {
				//按次扣费-每调一次 剩余量-1
				if userProduct.LeftNum == 0 {
					response.FailWithDetailed(response.LeftNumEmpty, nil, "余额不足", context)
					return
				}
				db.GetSFISDB().Transaction(func(tx *gorm.DB) error {
					//扣费
					tx.Exec("update user_product set left_num = IF(`left_num`<1, 0, `left_num`-1) WHERE `app_id` = ? and product_id=?", appID, productID)
					//生调用记录
					//生订单
					//存历史数据
					return nil
				})

			} else if productType == 1 {
				//按条扣费-每调一次剩余量-len(getDataList)
			}
		case 1:
			//按账户钱包余额扣费
			if productType == 0 {
				//按次扣费-每调一次
				//todo 账户余额表user_account的余额 减去 product单价*1
			} else if productType == 1 {
				//按条扣费-每调一次
				//todo 账户余额表user_account的余额 减去 product单价*len(getDataList)
			}
		case 2:
			//优先扣剩余量,剩余量为0,扣钱包余额
		}
	}
}