package delivery

import (
	"errors"
	"fmt"
	"math"
	"time"

	"git.rosy.net.cn/baseapi/utils"
	"git.rosy.net.cn/jx-callback/business/jxutils"
	"git.rosy.net.cn/jx-callback/business/model"
	"git.rosy.net.cn/jx-callback/business/model/dao"
	"git.rosy.net.cn/jx-callback/business/partner"
	"git.rosy.net.cn/jx-callback/globals"
)

const (
	warningDistance = 10        // 公里
	warningWeight   = 50 * 1000 // 克
	maxDiffFee2Mtps = 200       // 与美团配送最多差价
	maxAddFee       = 200       // 最大增加费用，单位为分，超过不发三方配送了

	alarmFee = 1500 // 配送费报警阈值
)

var (
	DefCreateWaybillPolicy = CreateWaybillPolicy(maxDiffFee2Mtps, maxAddFee)
)

func NullCreateWaybillPolicy(refDeliveryFee, refAddFee, deliveryFee int64) (errStr string) {
	return ""
}

func CreateWaybillPolicy(maxDiffFee2Mtps2, maxAddFee2 int64) func(refDeliveryFee, refAddFee, deliveryFee int64) (errStr string) {
	if maxDiffFee2Mtps2 == 0 {
		maxDiffFee2Mtps2 = maxDiffFee2Mtps
	}
	if maxAddFee2 == 0 {
		maxAddFee2 = maxAddFee
	}
	return func(refDeliveryFee, refAddFee, deliveryFee int64) (errStr string) {
		if deliveryFee-refDeliveryFee > maxDiffFee2Mtps2 {
			errStr = fmt.Sprintf("超参考价太多, 费用:%d，参考价:%d, 最高超价:%d", deliveryFee, refDeliveryFee, maxDiffFee2Mtps2)
		} else if refAddFee > maxAddFee2 {
			errStr = fmt.Sprintf("超基础价太多, 当前加价:%d, 最高加价:%d", refAddFee, maxAddFee2)
		}
		return errStr
	}
}

func AddPolicy(prevPolicy, newPolicy partner.CreateWaybillPolicy) (outPolicy partner.CreateWaybillPolicy) {
	return func(refDeliveryFee, refAddFee, deliveryFee int64) (errStr string) {
		if errStr = prevPolicy(refDeliveryFee, refAddFee, deliveryFee); errStr == "" {
			errStr = newPolicy(refDeliveryFee, refAddFee, deliveryFee)
		}
		return errStr
	}
}

func CallCreateWaybillPolicy(policy partner.CreateWaybillPolicy, refDeliveryFee, refAddFee, deliveryFee int64, order *model.GoodsOrder, waybillVendorID int) (err error) {
	waybillVendorName := jxutils.GetVendorName(waybillVendorID)
	globals.SugarLogger.Debugf("CallCreateWaybillPolicy orderID:%s, refDeliveryFee:%d, refAddFee:%d, deliveryFee:%d, waybillVendor:%s",
		order.VendorOrderID, refDeliveryFee, refAddFee, deliveryFee, waybillVendorName)
	if policy == nil {
		policy = NullCreateWaybillPolicy
	}
	if errStr := policy(refDeliveryFee, refAddFee, deliveryFee); errStr != "" {
		errStr = fmt.Sprintf("oderID:%s创建运单出错:%s", order.VendorOrderID, errStr)
		globals.SugarLogger.Debugf("%s CallCreateWaybillPolicy failed with %s", waybillVendorName, errStr)
		return errors.New(errStr)
	}
	return nil
}

func CalculateOrderDeliveryFee(order *model.GoodsOrder, billTime time.Time, db *dao.DaoDB) (deliveryFee, addFee int64, err error) {
	globals.SugarLogger.Debugf("CalculateOrderDeliveryFee orderID:%s", order.VendorOrderID)
	if db == nil {
		db = dao.GetDB()
	}
	jxStoreID := jxutils.GetSaleStoreIDFromOrder(order)
	var lng, lat float64
	priceInfo := &struct {
		Price int
		Lng   int
		Lat   int
	}{}
	if err = dao.GetRow(db, priceInfo, `
		SELECT t2.mtps_price price, t1.lng, t1.lat
		FROM store t1
		JOIN place t2 ON t1.city_code = t2.code
		WHERE t1.id = ? AND t1.deleted_at = ?
		`, jxStoreID, utils.DefaultTimeValue); err != nil {
		return 0, 0, err
	}
	lng = jxutils.IntCoordinate2Standard(priceInfo.Lng)
	lat = jxutils.IntCoordinate2Standard(priceInfo.Lat)
	deliveryFee = int64(priceInfo.Price)
	if deliveryFee == 0 {
		globals.SugarLogger.Warnf("CalculateOrderDeliveryFee 查不到美团配送价格 orderID:%s", order.VendorOrderID)
		deliveryFee = 650
	}
	if lng == 0 || lat == 0 {
		globals.SugarLogger.Infof("[运营]计算订单配送费orderID:%s,门店:%d没有坐标信息", order.VendorOrderID, jxutils.GetSaleStoreIDFromOrder(order))
		return 0, 0, fmt.Errorf("找不到门店:%d的坐标", jxutils.GetSaleStoreIDFromOrder(order))
	}
	lng2, lat2, _ := jxutils.IntCoordinate2MarsStandard(order.ConsigneeLng, order.ConsigneeLat, order.CoordinateType)

	var distanceAddFee, weightAddFee, timeAddFee int64
	distance := jxutils.EarthDistance(lng, lat, lng2, lat2) * 1.4
	if distance < 3 {
	} else if distance < 5 {
		distanceAddFee = jxutils.StandardPrice2Int(math.Ceil(distance - 3))
	} else {
		distanceAddFee = jxutils.StandardPrice2Int(2 + 2*math.Ceil(distance-5))
		if distance > warningDistance {
			globals.SugarLogger.Infof("[运营]计算订单配送费orderID:%s,距离%.3fkm太远,请检查门店坐标信息", order.VendorOrderID, distance)
		}
	}
	globals.SugarLogger.Debugf("CalculateOrderDeliveryFee orderID:%s", order.VendorOrderID)

	if order.Weight < 5*1000 {
	} else if order.Weight < 10*1000 {
		weightAddFee = jxutils.StandardPrice2Int(0.5 * float64(jxutils.IntWeight2Float(order.Weight)-5))
	} else if order.Weight < 20*1000 {
		weightAddFee = jxutils.StandardPrice2Int(2.5 + 1*float64(jxutils.IntWeight2Float(order.Weight)-10))
	} else {
		weightAddFee = jxutils.StandardPrice2Int(2.5 + 10 + 2*float64(jxutils.IntWeight2Float(order.Weight)-20))
		if order.Weight > warningWeight {
			globals.SugarLogger.Infof("[运营]计算订单配送费orderID:%s,重量:%dg太重,请检查商品属性", order.VendorOrderID, order.Weight)
		}
	}

	hour, min, sec := billTime.Clock()
	totalSeconds := hour*3600 + min*60 + sec
	// 午高峰加价
	if totalSeconds >= 11*3600 && totalSeconds <= 14*3600 { // 11:00 -- 14:00
		timeAddFee = jxutils.StandardPrice2Int(3)
	}
	// 夜间加价
	//  else if totalSeconds >= 21*3600 || totalSeconds <= 6*3600 { // 21:00 -- 06:00
	// 	timeAddFee = jxutils.StandardPrice2Int(3)
	// }
	addFee = distanceAddFee + weightAddFee + timeAddFee
	globals.SugarLogger.Debugf("CalculateOrderDeliveryFee orderID:%s, deliveryFee:%d addFee:%d, distance:%.3fkm distanceAddFee:%d, weight:%dg weightAddFee:%d, time:%s timeAddFee:%d", order.VendorOrderID, deliveryFee, addFee, distance, distanceAddFee, order.Weight, weightAddFee, utils.Time2TimeStr(billTime), timeAddFee)
	return deliveryFee + addFee, addFee, nil
}

func CalculateBillDeliveryFee(bill *model.Waybill) (deliveryFee, addFee int64) {
	order, err := partner.CurOrderManager.LoadOrder(bill.VendorOrderID, bill.OrderVendorID)
	if err != nil {
		return 0, 0
	}
	deliveryFee, addFee, _ = CalculateOrderDeliveryFee(order, bill.StatusTime, nil)
	return deliveryFee, addFee
}

func OnWaybillCreated(waybill *model.Waybill) {
	deliveryFee := int64(math.Max(float64(waybill.DesiredFee), float64(waybill.ActualFee)))
	if deliveryFee > alarmFee {
		globals.SugarLogger.Infof("[运营]%s订单, orderID:%s, 成功创建%s运单:%s, 配送费:%s太高(大于%s),请知悉!", model.VendorChineseNames[waybill.OrderVendorID], waybill.VendorOrderID,
			model.VendorChineseNames[waybill.WaybillVendorID], waybill.VendorWaybillID, jxutils.IntPrice2StandardCurrencyString(deliveryFee), jxutils.IntPrice2StandardCurrencyString(alarmFee))
	}
}