package service

import (
	"hepa-calc-api/api/model"
	"time"
)

type SystemMemberService struct {
}

// GetSystemMemberBuyPrice 获取会员购买价格
func (r *SystemMemberService) GetSystemMemberBuyPrice(m *model.SystemMember) (p float64) {
	p = m.Price

	if m.DiscountPrice != nil {
		p = *m.DiscountPrice
	}

	return p
}

// GetUserBuyPrice 获取会员最终价格
func (r *SystemMemberService) GetUserBuyPrice(userId int64, m *model.SystemMember) (p float64) {
	// 优惠价格
	price := r.HandleSystemMemberDiscountPrice(m.DiscountPrice, m.DiscountEndTime)
	if price == nil {
		// 正常价格
		p = m.Price
	} else {
		p = *price
	}

	if m.ReductionAmount != nil {
		// 检测用户是否购买过单项产品
		userService := &UserService{}
		isBuy := userService.CheckUserBuyMember(userId)
		if isBuy == false {
			// 未购买过
			p = p - *m.ReductionAmount
		}
	}

	return p
}

// HandleSystemMemberDiscountPrice 处理会员优惠价格
func (r *SystemMemberService) HandleSystemMemberDiscountPrice(discountPrice *float64, discountEndTime *model.LocalTime) (p *float64) {
	// 优惠价格
	if discountPrice != nil {
		if discountEndTime == nil {
			p = discountPrice
		} else {
			discountEndTime := time.Time(*discountEndTime)

			// 检测是否超出优惠时间
			now := time.Now()
			if discountEndTime.Before(now) {
				p = nil
			} else {
				p = discountPrice
			}
		}

	}

	return p
}