package service

import (
	"errors"
	"fmt"
	"gorm.io/gorm"
	"hospital-admin-api/api/dao"
	"hospital-admin-api/api/dto"
	"hospital-admin-api/api/model"
	"hospital-admin-api/api/requests"
	"hospital-admin-api/config"
	"hospital-admin-api/extend/weChat"
	"hospital-admin-api/global"
	"strconv"
	"time"
)

type OrderInquiryService struct {
}

// CancelOrderInquiry 取消问诊订单
func (r *OrderInquiryService) CancelOrderInquiry(req requests.CancelOrderInquiry, orderInquiryId, adminUserId int64) (bool, error) {
	// 获取订单数据
	orderInquiryDao := dao.OrderInquiryDao{}
	orderInquiry, err := orderInquiryDao.GetOrderInquiryById(orderInquiryId)
	if err != nil || orderInquiry == nil {
		return false, errors.New("订单数据错误")
	}

	// 检测订单状态 问诊订单状态（1:待支付 2:待分配 3:待接诊 4:已接诊 5:已完成 6:已结束 7:已取消）
	if orderInquiry.InquiryStatus == 6 {
		return false, errors.New("订单已结束,无法取消")
	}

	if orderInquiry.InquiryStatus == 7 {
		return false, errors.New("订单已取消,无法再次取消")
	}

	if orderInquiry.InquiryStatus == 1 {
		return false, errors.New("订单处于待支付状态,无法取消")
	}

	if orderInquiry.InquiryStatus == 2 {
		return false, errors.New("订单处于分配状态,无法取消")
	}

	if orderInquiry.InquiryStatus == 3 {
		return false, errors.New("订单处于等待接诊状态,无法取消")
	}

	// 检测订单退款状态 问诊订单退款状态（0:无退款 1:申请退款 2:退款中 3:退款成功 4:拒绝退款 5:退款关闭 6:退款异常）
	if orderInquiry.InquiryRefundStatus == 1 {
		return false, errors.New("订单申请退款中,无法取消")
	}

	if orderInquiry.InquiryRefundStatus == 2 {
		return false, errors.New("订单正在退款中,无法取消")
	}

	if orderInquiry.InquiryRefundStatus == 3 {
		return false, errors.New("订单已退款成功,无法取消")
	}

	if orderInquiry.InquiryRefundStatus == 6 {
		return false, errors.New("订单退款异常,请联系技术人员")
	}

	// 检测支付状态 支付状态（1:未支付 2:已支付 3:支付中 4:支付失败 5:支付超时 6:支付关闭 7:已撤销 8:转入退款）
	if orderInquiry.InquiryPayStatus != 2 {
		return false, errors.New("订单未支付，无需取消")
	}

	// 订单完成时间预留5分钟进行操作
	if !orderInquiry.CompleteTime.IsEmpty() {
		// 计算三天后的时间
		threeDaysLater := time.Time(orderInquiry.CompleteTime).Add(3 * 24 * time.Hour)

		// 计算三天后的时间与当前时间的时间差
		timeDifference := threeDaysLater.Sub(time.Now())
		fmt.Println(timeDifference)

		if timeDifference < 0 {
			return false, errors.New("订单已完成，无法取消")
		}

		if 5*time.Minute > timeDifference {
			return false, errors.New("距离订单完成时间不足5分钟，无法取消")
		}
	}

	// 开始事务
	tx := global.Db.Begin()
	defer func() {
		if r := recover(); r != nil {
			tx.Rollback()
		}
	}()

	// 问诊订单修改数据
	orderInquiryData := make(map[string]interface{})

	// 退款编号
	inquiryRefundNo := strconv.FormatInt(global.Snowflake.Generate().Int64(), 10)

	// 退款状态转换
	var inquiryRefundStatus int
	var successTime time.Time
	var refundId string

	// 发起退款
	if orderInquiry.PaymentAmountTotal > 0 {
		refundRequest := weChat.RefundRequest{
			TransactionId:      orderInquiry.EscrowTradeNo,
			OutTradeNo:         orderInquiry.InquiryNo,
			OutRefundNo:        inquiryRefundNo,
			Reason:             "客服取消",
			PaymentAmountTotal: int64(orderInquiry.PaymentAmountTotal * 100),
			NotifyUrl:          config.C.Wechat.RefundNotifyDomain + config.C.Wechat.PatientInquiryRefundNotifyUrl,
		}

		refund, err := refundRequest.Refund()
		if err != nil {
			tx.Rollback()
			return false, errors.New(err.Error())
		}

		if refund.Status == nil {
			tx.Rollback()
			return false, errors.New("退款状态错误")
		}

		if *refund.Status == "SUCCESS" {
			// 退款成功
			inquiryRefundStatus = 3

			if refund.SuccessTime != nil {
				successTime = *refund.SuccessTime
			}
		} else if *refund.Status == "CLOSED" {
			// 退款关闭
			inquiryRefundStatus = 5

		} else if *refund.Status == "PROCESSING" {
			// 退款处理中
			inquiryRefundStatus = 2

		} else if *refund.Status == "ABNORMAL" {
			// 退款异常
			tx.Rollback()
			return false, errors.New("退款状态错误")
		} else {
			tx.Rollback()
			return false, errors.New("退款状态错误")
		}

		if refund.RefundId == nil {
			tx.Rollback()
			return false, errors.New("缺少退款订单编号")
		}

		// 退款编号
		refundId = *refund.RefundId
	} else {
		// 支付金额为0，模拟退款
		refundId = "模拟退款：" + strconv.FormatInt(global.Snowflake.Generate().Int64(), 10)
		inquiryRefundStatus = 3
		successTime = time.Now()

		// 模拟退款时手动退还优惠卷
		if orderInquiry.CouponAmountTotal > 0 {
			res := ReturnInquiryCoupon(tx, orderInquiry.OrderInquiryId)
			if !res {
				tx.Rollback()
				return false, errors.New("退还优惠卷失败")
			}
		}
	}

	orderInquiryData["inquiry_refund_status"] = inquiryRefundStatus
	orderInquiryData["inquiry_status"] = 7                                     // 问诊订单状态（1:待支付 2:待分配 3:待接诊 4:已接诊 5:已完成 6:已结束 7:已取消）
	orderInquiryData["cancel_time"] = time.Now().Format("2006-01-02 15:04:05") // 订单取消时间
	orderInquiryData["cancel_reason"] = 4                                      // 取消订单原因（1:医生未接诊 2:主动取消 3:无可分配医生 4:客服取消 5:支付超时）
	orderInquiryData["cancel_remarks"] = req.CancelRemarks                     // 取消订单备注（自动添加）

	// 修改问诊订单退款状态
	err = orderInquiryDao.EditOrderInquiryById(tx, orderInquiryId, orderInquiryData)
	if err != nil {
		tx.Rollback()
		return false, errors.New("取消订单失败")
	}

	// 新增退款表
	orderInquiryRefund := &model.OrderInquiryRefund{
		PatientId:           orderInquiry.PatientId,
		OrderInquiryId:      orderInquiryId,
		InquiryNo:           orderInquiry.InquiryNo,
		InquiryRefundNo:     inquiryRefundNo,
		RefundId:            refundId,
		InquiryRefundStatus: inquiryRefundStatus,
		RefundTotal:         orderInquiry.PaymentAmountTotal,
		RefundReason:        req.CancelRemarks,
		SuccessTime:         model.LocalTime(successTime),
	}

	orderInquiryRefundDao := dao.OrderInquiryRefundDao{}
	orderInquiryRefund, err = orderInquiryRefundDao.AddOrderInquiryRefund(tx, orderInquiryRefund)
	if err != nil || orderInquiryRefund == nil {
		tx.Rollback()
		return false, errors.New(err.Error())
	}

	// 记录日志
	orderOperationLog := &model.OrderOperationLog{
		OrderId:          orderInquiry.OrderInquiryId,
		OrderNo:          orderInquiry.InquiryNo,
		OrderType:        1,
		OperatorId:       adminUserId,
		OperationContent: "取消订单并退款",
	}

	orderOperationLogDao := dao.OrderOperationLogDao{}
	orderOperationLog, err = orderOperationLogDao.AddOrderOperationLog(tx, orderOperationLog)
	if err != nil || orderOperationLog == nil {
		tx.Rollback()
		return false, errors.New(err.Error())
	}

	tx.Commit()

	return true, nil
}

// ReturnInquiryCoupon 退还问诊订单优惠卷
func ReturnInquiryCoupon(tx *gorm.DB, orderInquiryId int64) bool {
	orderInquiryCouponDao := dao.OrderInquiryCouponDao{}
	userCouponDao := dao.UserCouponDao{}

	// 获取用户优惠卷信息
	orderInquiry, err := orderInquiryCouponDao.GetOrderInquiryCouponByOrderInquiryId(orderInquiryId)
	if err != nil || orderInquiry == nil {
		// 订单未使用优惠卷，无需退还
		return true
	}

	// 获取用户优惠卷数据
	userCoupon, err := userCouponDao.GetUserCouponById(orderInquiry.UserCouponId)
	if err != nil || userCoupon == nil {
		// 无该优惠卷数据，无需处理
		return true
	}

	// 恢复优惠卷
	userCouponData := make(map[string]interface{})

	// 检测优惠卷过期时间。判断是否需要退还
	if userCoupon.ValidEndTime.Before(time.Now()) {
		userCouponData["user_coupon_status"] = 3
	} else {
		userCouponData["user_coupon_status"] = 0
		userCouponData["coupon_use_date"] = nil
	}

	err = userCouponDao.EditUserCouponById(tx, userCoupon.UserCouponId, userCouponData)
	if err != nil {
		// 恢复优惠卷失败
		return false
	}
	return true
}

// GetOrderInquiry 问诊订单详情
func (r *OrderInquiryService) GetOrderInquiry(orderInquiryId int64) (g *dto.OrderInquiryDto, err error) {
	// 获取问诊订单数据
	orderInquiryDao := dao.OrderInquiryDao{}
	orderInquiry, err := orderInquiryDao.GetOrderInquiryPreloadById(orderInquiryId)
	if err != nil || orderInquiry == nil {
		return nil, errors.New(err.Error())
	}

	// 获取问诊订单优惠卷
	orderInquiryCouponDao := dao.OrderInquiryCouponDao{}
	orderInquiryCoupon, err := orderInquiryCouponDao.GetOrderInquiryCouponByOrderInquiryId(orderInquiryId)

	// 获取问诊病例
	orderInquiryCaseDao := dao.OrderInquiryCaseDao{}
	orderInquiryCase, err := orderInquiryCaseDao.GetOrderInquiryCaseByOrderInquiryId(orderInquiryId)
	if orderInquiryCase == nil {
		return nil, errors.New("数据错误，无问诊病例")
	}

	// 获取退款数据
	orderInquiryRefundDao := dao.OrderInquiryRefundDao{}
	orderInquiryRefund, err := orderInquiryRefundDao.GetOrderInquiryRefundByOrderInquiryId(orderInquiryId)

	// 获取订单评价
	orderEvaluationDao := dao.OrderEvaluationDao{}
	orderEvaluation, err := orderEvaluationDao.GetOrderEvaluationByOrderInquiryId(orderInquiryId)

	// 医生数据
	userDoctorService := UserDoctorService{}
	userDoctor, err := userDoctorService.GetUserDoctorById(orderInquiry.DoctorId)
	if err != nil {
		return nil, errors.New(err.Error())
	}

	// 处理返回值
	g = dto.GetOrderInquiryDto(orderInquiry)

	// 加载医生数据
	g.UserDoctor = userDoctor

	// 加载订单退款数据
	g.LoadOrderInquiryRefund(orderInquiryRefund)

	// 加载问诊订单优惠卷
	g.LoadOrderInquiryCoupon(orderInquiryCoupon)

	// 加载问诊病例
	g.LoadMaskOrderInquiryCase(orderInquiryCase)

	// 加载订单评价
	g.LoadOrderEvaluation(orderEvaluation)
	return g, nil
}