package models

import (
	"encoding/json"
	"errors"
	"fmt"
	"go-admin/app/admin/apis/pay"
	orm "go-admin/common/global"
	"go-admin/logger"
	"gorm.io/gorm"
	"math/rand"
	"strings"
	"time"
)

const (
	ErpOrderStateUnAudit = "un_audit" // 未审核
	ErpOrderStateAudited = "audited"  // 已审核

	ErpOrderMemberTypeGeneral = "general" // 普通
	ErpOrderMemberTypeMember  = "member"  // 会员

	RetailTypeSale     = "sale"     // 零售订单
	RetailTypeRejected = "rejected" // 零售退货订单

	NoCreatePayOrder = 0 // 未创建
	WaitForPaying    = 1 // 待支付
	HavePaid         = 2 // 已支付

	NoPrint     = 1 // 未打印
	HavePrinted = 2 // 已打印

	OnlinePay = 1 // 线上支付（微信/支付宝/云闪付扫码）

	PayInit    = "pay_init"
	Paying     = "paying"
	PayOk      = "pay_ok"
	PayFailed  = "pay_failed"
	PayUnknown = "pay_unknown"
)

type ErpOrder struct {
	Model

	BillSn              string              `json:"bill_sn" gorm:"index"`           // 单据编号
	RetailType          string              `json:"retail_type"`                    // 销售类型:sale 零售销售； rejected 零售退货
	Uid                 int                 `json:"uid"`                            // 用户id
	Tel                 string              `json:"tel" gorm:"index"`               // 客户手机号
	StoreId             uint32              `json:"store_id" gorm:"index"`          // 门店id
	StoreName           string              `json:"store_name"`                     // 门店名称
	MakerId             uint32              `json:"maker_id" gorm:"index"`          // 制单人id
	MakerName           string              `json:"maker_name"`                     // 制单人名称
	MakerTime           time.Time           `json:"maker_time"`                     // 制单时间
	AuditorId           uint32              `json:"auditor_id" gorm:"index"`        // 审核人id
	AuditorName         string              `json:"auditor_name"`                   // 审核人姓名
	AuditTime           time.Time           `json:"audit_time"`                     // 审核时间
	CashierList         string              `json:"cashier_list" gorm:"type:text"`  // 付款方式，存储json数据
	Salesman1           uint32              `json:"salesman_1"`                     // 销售员一用户ID
	SalesmanName1       uint32              `json:"salesmanName_1"`                 // 销售员一用户姓名
	Salesman2           uint32              `json:"salesman_2"`                     // 销售员二用户ID
	SalesmanName2       uint32              `json:"salesmanName_2"`                 // 销售员二用户姓名
	MemberType          string              `json:"member_type"`                    // 会员类型:general 普通； member 会员
	State               string              `json:"state" gorm:"index"`             // 订单状态:un_audit 待审核； audited 已审核
	TotalRetailPrice    float64             `json:"total_retail_price"`             // 订单总指导零售价
	TotalAmount         float64             `json:"total_amount"`                   // 订单实收金额
	TotalCount          uint32              `json:"total_count"`                    // 订单商品数量
	VmCount             uint32              `json:"vm_count"`                       // 使用会员积分
	SaleOrderId         uint32              `json:"sale_order_id"`                  // 销售订单id
	PayStatus           uint32              `json:"pay_status"`                     // 支付状态 0-未创建 ；1-待支付； 2-已支付
	IsPrint             uint32              `json:"is_print"`                       // 是否打印小票 1-未打印 2-已打印
	PrintCount          uint32              `json:"print_count"`                    // 小票打印次数
	InvoiceCode         uint32              `json:"invoice_code"`                   // 发票代码
	InvoiceNumber       uint32              `json:"invoice_number"`                 // 发票编码
	RejectedTotalAmount float64             `json:"rejected_total_amount" gorm:"-"` // 订单总退货金额
	RejectedTotalCount  uint32              `json:"rejected_total_count" gorm:"-"`  // 订单总退货数量
	Commodities         []ErpOrderCommodity `json:"commodities" gorm:"-"`           // 零售订单商品信息
	Cashiers            []ErpOrderCashier   `json:"cashiers" gorm:"-"`              // 收付款方式
}

type ErpOrderCommodity struct {
	Model

	ErpOrderId               uint32  `json:"erp_order_id" gorm:"index"`     // 零售订单id（后端生成）
	ErpCategoryId            uint32  `json:"erp_category_id" gorm:"index"`  // 分类id
	ErpCategoryName          string  `json:"erp_category_name"`             // 分类名称
	ErpCommodityId           uint32  `json:"erp_commodity_id" gorm:"index"` // 商品id
	ErpCommodityName         string  `json:"erp_commodity_name"`            // 商品名称
	IMEIType                 uint32  `json:"imei_type"`                     // 1-无串码 2-串码
	IMEI                     string  `json:"imei" gorm:"index"`             // 串码
	PresentType              uint32  `json:"present_type"`                  // 赠送类型:1-非赠送 2-赠送
	RetailPrice              uint32  `json:"retail_price"`                  // 指导零售价
	SalePrice                uint32  `json:"sale_price"`                    // 零售价
	Count                    uint32  `json:"count"`                         // 销售数量
	SaleDiscount             float64 `json:"sale_discount"`                 // 零售优惠
	MemberDiscount           float64 `json:"member_discount"`               // 会员优惠
	VmDiscount               float64 `json:"vm_discount"`                   // 会员积分抵扣
	Amount                   float64 `json:"amount"`                        // 实际零售价
	Remark                   string  `json:"remark"`                        // 备注
	Tel                      string  `json:"tel" gorm:"index"`              // 手机号
	RejectedPrice            float64 `json:"rejected_price"`                // 退货单价
	RejectedCount            uint32  `json:"rejected_count"`                // 退货数量
	RejectedAmount           float64 `json:"rejected_amount"`               // 退货金额
	RejectedOrderCommodityId uint32  `json:"rejected_order_commodity_id"`   // 退货订单商品id
}

type ErpOrderCashier struct {
	CashierId uint32  `json:"cashier_id"` // 收付款方式id
	Name      string  `json:"name"`       // 收付款方式名称
	Amount    float64 `json:"amount"`     // 金额
}

type ErpOrderRecord struct {
	Model

	ErpOrderId  uint32  `json:"erp_order_id" gorm:"index"` // 零售订单id
	BillSn      string  `json:"bill_sn" gorm:"index"`      // 单据编号
	OutOrderNo  string  `json:"out_order_no"`              // 商户订单号
	PlatTrxNo   string  `json:"plat_trx_no"`               // 平台交易流水号
	BankOrderNo string  `json:"bank_order_no"`             // 银行订单号
	TotalAmount float64 `json:"total_amount"`              // 订单总金额
	PayWay      string  `json:"pay_way"`                   // 支付方式
	Status      string  `json:"status"`                    // 支付状态
}

type ErpOrderCreateReq struct {
	BillSn              string              `json:"bill_sn"`                                  // 单据编号
	StoreId             uint32              `json:"store_id" binding:"required"`              // 门店id
	StoreName           string              `json:"store_name"`                               // 门店名称
	Salesman1           uint32              `json:"salesman_1" binding:"required"`            // 销售员一
	SalesmanName1       uint32              `json:"salesmanName_1"`                           // 销售员一用户姓名
	Salesman2           uint32              `json:"salesman_2"`                               // 销售员二
	SalesmanName2       uint32              `json:"salesmanName_2"`                           // 销售员二用户姓名
	RetailType          string              `json:"retail_type" binding:"required"`           // 销售类型：sale 零售销售； rejected 零售退货
	Tel                 string              `json:"tel" binding:"required"`                   // 会员手机号
	MemberType          string              `json:"member_type"`                              // 会员类型：general 普通； member 会员
	TotalRetailPrice    float64             `json:"total_retail_price"`                       // 订单总指导零售价
	TotalAmount         float64             `json:"total_amount"`                             // 订单实收金额
	TotalCount          uint32              `json:"total_count"`                              // 订单商品数量
	VmAmount            uint32              `json:"vm_count"`                                 // 使用会员积分
	Cashiers            []ErpOrderCashier   `json:"cashiers"  binding:"required"`             // 收付款方式
	ErpOrderCommodities []ErpOrderCommodity `json:"erp_order_commodities" binding:"required"` // 零售订单商品信息
}

type ErpOrderListReq struct {
	BillSn     string `json:"bill_sn"`     // 单据编号
	RetailType string `json:"retail_type"` // 销售类型：sale 零售销售； rejected 零售退货
	Uid        int    `json:"uid"`         // 用户ID
	Tel        string `json:"tel"`         // 客户手机号
	Salesman   uint32 `json:"salesman"`    // 销售人员ID
	StoreId    uint32 `json:"store_id"`    // 门店ID
	State      string `json:"state"`       // 订单状态
	PayStatus  uint32 `json:"pay_status"`  // 支付状态 0-未创建 ；1-待支付； 2-已支付
	StartTime  string `json:"start_time"`  // 开始时间
	EndTime    string `json:"end_time"`    // 结束时间
	PageIndex  int    `json:"pageIndex"`   // 页码
	PageSize   int    `json:"pageSize"`    // 页面条数
	IsExport   uint32 `json:"is_export"`   // 1-导出
}

type ErpOrderListResp struct {
	List      []ErpOrder `json:"list"`
	Total     int        `json:"total"`     // 总条数
	PageIndex int        `json:"pageIndex"` // 页码
	PageSize  int        `json:"pageSize"`  // 每页展示条数
	ExportUrl string     `json:"export_url"`
}

type ErpOrderDeleteReq struct {
	BillSn string `json:"bill_sn" binding:"required"` // 单据编号
}

type ErpOrderPayReq struct {
	BillSn   string `json:"bill_sn" binding:"required"`    // 单据编号
	AuthCode string `json:"auth_code"  binding:"required"` // 用户付款码
}

type ErpOrderPayResp struct {
	Status string `json:"status"` // 支付成功：pay_ok；支付失败：pay_failed ；等待支付：paying; 未知状态：pay_unknown
}

type ErpOrderAuditReq struct {
	BillSn string `json:"bill_sn" binding:"required"` // 单据编号
	State  int    `json:"state"  binding:"required"`  // 审核操作: 1-审核 2-取消审核
}

type ErpOrderAddInvoiceReq struct {
	BillSn        string `json:"bill_sn" binding:"required"`        // 单据编号
	InvoiceCode   uint32 `json:"invoice_code" binding:"required"`   // 发票代码
	InvoiceNumber uint32 `json:"invoice_number" binding:"required"` // 发票编码
}

func (m *ErpOrderListReq) List() (*ErpOrderListResp, error) {
	resp := &ErpOrderListResp{
		PageIndex: m.PageIndex,
		PageSize:  m.PageSize,
	}
	page := m.PageIndex - 1
	if page < 0 {
		page = 0
	}
	if m.PageSize == 0 {
		m.PageSize = 10
	}
	qs := orm.Eloquent.Table("erp_order")
	if m.BillSn != "" {
		qs = qs.Where("bill_sn=?", m.BillSn)
	} else {
		if m.RetailType != "" {
			qs = qs.Where("retail_type=?", m.RetailType)
		}
		if m.Tel != "" {
			qs = qs.Where("tel=?", m.Tel)
		}
		if m.StoreId != 0 {
			qs = qs.Where("store_id=?", m.StoreId)
		}
		if m.Salesman != 0 {
			qs = qs.Where("salesman1 = ? or salesman2 = ?", m.Salesman, m.Salesman)
		}
		if m.PayStatus != 0 {
			qs = qs.Where("pay_status=?", m.PayStatus)
		}
		if m.State != "" {
			qs = qs.Where("state=?", m.State)
		}
		if m.StartTime != "" {
			parse, err := time.Parse(DateTimeFormat, m.StartTime)
			if err != nil {
				logger.Errorf("err:", err)
			}
			qs = qs.Where("created_at > ?", parse)
		}
		if m.EndTime != "" {
			parse, err := time.Parse(DateTimeFormat, m.EndTime)
			if err != nil {
				logger.Errorf("err:", err)
			}
			parse = parse.AddDate(0, 0, 1)
			qs = qs.Where("created_at < ?", parse)
		}
	}

	var count int64
	err := qs.Count(&count).Error
	if err != nil {
		logger.Error("count err:", logger.Field("err", err))
		return resp, err
	}
	var orders []ErpOrder
	if m.IsExport == 1 {
		err = qs.Order("id DESC").Find(&orders).Error
		if err != nil && err != RecordNotFound {
			logger.Error("dailys err:", logger.Field("err", err))
			return resp, err
		}

		//listExport, err := ErpOrderListExport(orders)
		//if err != nil {
		//	logger.Error("list export err:", err)
		//}
		//resp.ExportUrl = listExport
	} else {
		resp.Total = int(count)/m.PageSize + 1

		err = qs.Order("id DESC").Offset(page * m.PageSize).Limit(m.PageSize).Find(&orders).Error
		if err != nil && err != RecordNotFound {
			logger.Error("erp commodity list err:", logger.Field("err", err))
			return resp, err
		}
		ErpOrderListSetCashier(orders)

		resp.List = orders

		//跟之前保持一致
		resp.Total = int(count)
		resp.PageIndex = page + 1
		resp.PageSize = m.PageSize
	}

	return resp, nil
}

// UpdateStock 扣减or添加库存
// 零售订单：
// 有串码，通过串码查找库存详情表，然后更改对应库存的状态为"已售"；
// 非串码，通过门店id、商品id、商品名称查找库存详情表，找到库存时间最长的，然后更改其状态为"已售"。
// 同时扣减库存表对应的数量，-1
// 零售退货：
// 有串码，通过串码查找库存详情表，然后更改对应库存的状态为"在库"；
// 非串码，通过门店id、商品id、商品名称查找库存详情表，找到状态为"已售"且时间最近的单，将其状态改为"在库"
// 同时扣减库存表对应的数量，+1
func UpdateStock(gdb *gorm.DB, erpOrder ErpOrder) error {
	var commodities []ErpOrderCommodity
	err := orm.Eloquent.Table("erp_order_commodity").Where("erp_order_id = ?", erpOrder.ID).
		Find(&commodities).Error
	if err != nil {
		logger.Error("commodities err:", logger.Field("err", err))
		return err
	}

	if erpOrder.RetailType == RetailTypeSale { // 零售订单
		for i, _ := range commodities {
			if commodities[i].IMEIType == 2 { // 串码商品
				if commodities[i].IMEI == "" {
					return errors.New("串码为空")
				}

				err = gdb.Table("erp_stock_commodity").Where("imei = ?", commodities[i].IMEI).
					Update("state", 2).Error // 状态更新为已售
				if err != nil {
					logger.Error("commodities err:", logger.Field("err", err))
					return err
				}

				err = gdb.Table("erp_stock").Where("store_id = ? and erp_commodity_id = ?",
					erpOrder.StoreId, commodities[i].ErpCommodityId).
					Updates(map[string]interface{}{"count": gorm.Expr("count - ?", 1)}).Error // 库存数量-1
				if err != nil {
					logger.Error("commodities err:", logger.Field("err", err))
					return err
				}
			} else { // 非串码商品
				var stockCommodity []ErpStockCommodity
				// 通过门店id，商品id，查找状态为1-在库的非串码商品
				err = orm.Eloquent.Table("erp_stock_commodity").Where("erp_commodity_id = ? and store_id = ? "+
					"and state = ? and imei_type = ?", commodities[i].ErpCommodityId, erpOrder.StoreId, 1, 1).
					Order("sort DESC").Find(&stockCommodity).Error
				if err != nil {
					logger.Error("commodities err:", logger.Field("err", err))
					return err
				}
				if stockCommodity == nil {
					return errors.New("find no stock commodity")
				}

				err = gdb.Table("erp_stock_commodity").Where("id = ?", stockCommodity[0].ID).
					Update("state", 2).Error // 状态更新为已售
				if err != nil {
					logger.Error("commodities err:", logger.Field("err", err))
					return err
				}

				err = gdb.Table("erp_stock").Where("store_id = ? and erp_commodity_id = ?",
					erpOrder.StoreId, commodities[i].ErpCommodityId).
					Updates(map[string]interface{}{"count": gorm.Expr("count - ?", 1)}).Error // 库存数量-1
				if err != nil {
					logger.Error("commodities err:", logger.Field("err", err))
					return err
				}
			}
		}
	} else if erpOrder.RetailType == RetailTypeRejected { // 零售退货订单
		for i, _ := range commodities {
			if commodities[i].IMEIType == 2 { // 串码商品
				if commodities[i].IMEI == "" {
					return errors.New("串码为空")
				}

				err = gdb.Table("erp_stock_commodity").Where("imei = ?", commodities[i].IMEI).
					Update("state", 1).Error // 状态更新为在库
				if err != nil {
					logger.Error("RetailTypeRejected commodities err:", logger.Field("err", err))
					return err
				}

				err = gdb.Table("erp_stock").Where("store_id = ? and erp_commodity_id = ?",
					erpOrder.StoreId, commodities[i].ErpCommodityId).
					Updates(map[string]interface{}{"count": gorm.Expr("count + ?", 1)}).Error // 库存数量+1
				if err != nil {
					logger.Error("RetailTypeRejected commodities err:", logger.Field("err", err))
					return err
				}
			} else { // 非串码商品
				var stockCommodity []ErpStockCommodity
				// 通过门店id，商品id，查找状态为2-已售的非串码商品
				err = orm.Eloquent.Table("erp_stock_commodity").Where("erp_commodity_id = ? and store_id = ? "+
					"and state = ? and imei_type = ?", commodities[i].ErpCommodityId, erpOrder.StoreId, 2, 1).
					Order("sort DESC").Find(&stockCommodity).Error
				if err != nil {
					logger.Error("RetailTypeRejected commodities err:", logger.Field("err", err))
					return err
				}
				if stockCommodity == nil {
					return errors.New("RetailTypeRejected find no stock commodity")
				}

				err = gdb.Table("erp_stock_commodity").Where("id = ?", stockCommodity[0].ID).
					Update("state", 1).Error // 状态更新为在库
				if err != nil {
					logger.Error("RetailTypeRejected commodities err:", logger.Field("err", err))
					return err
				}

				err = gdb.Table("erp_stock").Where("store_id = ? and erp_commodity_id = ?",
					erpOrder.StoreId, commodities[i].ErpCommodityId).
					Updates(map[string]interface{}{"count": gorm.Expr("count + ?", 1)}).Error // 库存数量+1
				if err != nil {
					logger.Error("RetailTypeRejected commodities err:", logger.Field("err", err))
					return err
				}
			}
		}
	} else {
		return errors.New("订单类型错误")
	}

	return nil
}

// CheckIsOnlinePay 检查是否包含线上支付
func CheckIsOnlinePay(jCashier []ErpOrderCashier) bool {
	for _, cashier := range jCashier {
		if cashier.CashierId == OnlinePay || strings.Contains(cashier.Name, "微信") || strings.Contains(cashier.Name, "支付宝") {
			return true
		}
	}
	return false
}

func NewErpBillSn() string {
	nowTime := time.Now()
	rand.Seed(nowTime.UnixNano())
	max := 1
	for {
		if max > 5 {
			logger.Error("create sn err")
			return ""
		}
		random := rand.Int31n(9999) + 1000
		sn := fmt.Sprintf("%s%d", nowTime.Format("060102"), random)
		exist, err := QueryRecordExist(fmt.Sprintf("SELECT * FROM erp_order WHERE bill_sn='%s'", sn))
		if err != nil {
			logger.Error("exist sn err")
		}
		if !exist {
			return sn
		}

		max++
	}
}

func NewErpPurchaseSn() string {
	nowTime := time.Now()
	rand.Seed(nowTime.UnixNano())
	max := 1
	for {
		if max > 5 {
			logger.Error("create sn err")
			return ""
		}
		random := rand.Int31n(9999) + 1000
		sn := fmt.Sprintf("%s%d", nowTime.Format("060102"), random)
		exist, err := QueryRecordExist(fmt.Sprintf("SELECT * FROM erp_purchase_order WHERE serial_number='%s'", sn))
		if err != nil {
			logger.Error("exist sn err")
		}
		if !exist {
			return sn
		}

		max++
	}
}

func ErpOrderListSetCashier(list []ErpOrder) {
	for i, _ := range list {
		list[i].SetErpCashier()
	}
}

func (m *ErpOrder) SetErpCashier() {
	if m.CashierList != "" {
		var cashiers []ErpOrderCashier
		err := json.Unmarshal([]byte(m.CashierList), &cashiers)
		if err != nil {
			logger.Error("unmarshal err:", logger.Field("err", err))
		}
		m.Cashiers = cashiers
		m.CashierList = ""
	}
}

func GetErpOrderCommodityMap(ids []uint32) (map[uint32]ErpOrderCommodity, error) {
	commodityMap := make(map[uint32]ErpOrderCommodity, 0)
	if len(ids) == 0 {
		return commodityMap, nil
	}
	var commodities []ErpOrderCommodity
	err := orm.Eloquent.Table("erp_order_commodity").Where("id IN (?)", ids).Find(&commodities).Error
	if err != nil {
		logger.Error("commodities err:", logger.Field("err", err))
		return commodityMap, err
	}
	for i, _ := range commodities {
		commodityMap[commodities[i].ID] = commodities[i]
	}
	return commodityMap, nil
}

func SetUserInfo(tel string) {
	var user UserInfo
	err := orm.Eloquent.Table("user").Where("tel=?", tel).Find(&user).Error
	if err != nil {
		logger.Error("user err:", logger.Field("err", err))
		return
	}
	if user.FirstRetailOrder.IsZero() {
		err := orm.Eloquent.Table("user").Where("uid=?", user.Uid).Update("first_retail_order", time.Now()).Error
		if err != nil {
			logger.Error("update user err:", logger.Field("err", err))
		}
	}
}

func SetInvoice(req *ErpOrderAddInvoiceReq) error {
	var orderInfo ErpOrder
	err := orm.Eloquent.Table("erp_order").Where("bill_sn = ?", req.BillSn).Find(&orderInfo).Error
	if err != nil {
		logger.Error("操作失败，未查询到订单", logger.Field("err", err))
		return errors.New("未查询到订单")
	}

	if orderInfo.State == ErpOrderStateUnAudit {
		logger.Errorf("order delete err, state is:", orderInfo.State)
		return errors.New("订单未审核")
	}

	if orderInfo.PayStatus != 2 {
		logger.Errorf("order delete err, state is:", orderInfo.State)
		return errors.New("订单未支付")
	}

	err = orm.Eloquent.Table("erp_order").Where("id = ?", orderInfo.ID).Updates(map[string]interface{}{
		"invoice_code":   req.InvoiceCode,
		"invoice_number": req.InvoiceNumber,
	}).Error
	if err != nil {
		logger.Error("AddInvoice err:", logger.Field("err", err))
		return err
	}

	return nil
}

func DeleteOrder(req *ErpOrderDeleteReq) error {
	var orderInfo ErpOrder
	err := orm.Eloquent.Table("erp_order").Where("bill_sn = ?", req.BillSn).Find(&orderInfo).Error
	if err != nil {
		logger.Error("order delete err:", logger.Field("err", err))
		return errors.New("未查询到订单")
	}

	if orderInfo.State != ErpOrderStateUnAudit {
		logger.Errorf("order delete err, state is:", orderInfo.State)
		return errors.New("已审核订单不能删除")
	}

	var orderCommodities ErpOrderCommodity
	err = orm.Eloquent.Table("erp_order_commodity").Where("erp_order_id = ?", orderInfo.ID).Find(&orderCommodities).Error
	if err != nil {
		logger.Error("order delete err:", logger.Field("err", err))
		return errors.New("未查询到订单商品信息")
	}

	begin := orm.Eloquent.Begin()
	err = begin.Delete(orderCommodities).Error
	if err != nil {
		begin.Rollback()
		logger.Error("order delete1 err:", logger.Field("err", err))
		return err
	}

	err = begin.Delete(orderInfo).Error
	if err != nil {
		begin.Rollback()
		logger.Error("order delete2 err:", logger.Field("err", err))
		return err
	}

	err = begin.Commit().Error
	if err != nil {
		begin.Rollback()
		logger.Error("order delete3 err:", logger.Field("err", err))
		return err
	}

	return nil
}

// 生成序列号
func GenErpOrderSerialNo() string {
	currentDate := time.Now().Format("20060102")
	tradeNO := "sale" + currentDate + pay.RandomNumString(10000000, 99999999)
	return tradeNO
}

// GetErpOrderSn 生成零售订单号
func GetErpOrderSn() string {
	var erpOrderSn string
	for {
		erpOrderSn = GenErpOrderSerialNo()
		var count int64
		err := orm.Eloquent.Table("erp_order_record").Where("out_order_no=?", erpOrderSn).Count(&count)
		if err != nil {
			logger.Error("err:", logger.Field("err", err))
		}
		if count == 0 {
			break
		}
	}
	return erpOrderSn
}

// 查询是否有已支付的订单
func checkIsPayOk(billSn string) bool {
	var count int64
	err := orm.Eloquent.Table("erp_order_record").Where("bill_sn = ? and status = ?", billSn, PayOk).
		Count(&count).Error
	if err != nil {
		logger.Error("checkIsPayOk err:", logger.Field("err", err))
	}

	return count > 0
}

// 查询是否有待支付的订单
func checkIsPaying(billSn string) bool {
	var count int64
	err := orm.Eloquent.Table("erp_order_record").Where("bill_sn = ? and status = ?", billSn, Paying).
		Count(&count).Error
	if err != nil {
		logger.Error("checkIsPayOk err:", logger.Field("err", err))
	}

	return count > 0
}

// 查询是否有刚初始化的订单
func checkIsPayInit(billSn string) bool {
	var count int64
	err := orm.Eloquent.Table("erp_order_record").Where("bill_sn = ? and status = ?", billSn, PayInit).
		Count(&count).Error
	if err != nil {
		logger.Error("checkIsPayOk err:", logger.Field("err", err))
	}

	return count > 0
}

// ErpOrderPay 零售订单支付
func ErpOrderPay(req *ErpOrderPayReq) (*ErpOrderPayResp, error) {
	resp := &ErpOrderPayResp{
		Status: PayFailed,
	}
	//通过单据号查询收款金额
	var orderInfo ErpOrder
	err := orm.Eloquent.Table("erp_order").Where("bill_sn = ?", req.BillSn).Find(&orderInfo).Error
	if err != nil {
		logger.Error("未查询到订单:", logger.Field("err", err))
		return resp, err
	}

	if orderInfo.PayStatus == HavePaid {
		logger.Error("ErpOrderPay err, 订单已支付")
		return resp, errors.New("订单已支付")
	}

	if orderInfo.PayStatus != WaitForPaying {
		logger.Error("ErpOrderPay err, 订单不是待支付状态")
		return resp, errors.New("订单不是待支付状态")
	}

	var cashiers []ErpOrderCashier
	err = json.Unmarshal([]byte(orderInfo.CashierList), &cashiers)
	if err != nil {
		logger.Error("unmarshal CashierList err:", logger.Field("err", err))
	}

	var amount float64
	for i, _ := range cashiers {
		if cashiers[i].CashierId == OnlinePay { //线上支付
			amount = cashiers[i].Amount
			break
		}
	}
	if amount == 0 {
		logger.Error("ErpOrderPay err, 订单金额为0")
		return resp, errors.New("订单金额为0")
	}

	// 查询是否有已支付的订单
	if checkIsPayOk(req.BillSn) {
		// 更新零售订单表
		err = orm.Eloquent.Model(&ErpOrder{}).Where("id = ?", orderInfo.ID).
			Update("pay_status", HavePaid).Error
		if err != nil {
			logger.Error("ErpOrderPay update erp_order_record err:", logger.Field("err", err))
		}
		resp.Status = PayOk
		logger.Error("ErpOrderPay err2, 订单已支付")
		return resp, errors.New("订单已支付")
	}

	// 查询是否有待支付订单
	if checkIsPaying(req.BillSn) {
		queryResp, err := QueryErpOrderPayStatus(req.BillSn)
		if err != nil {
			logger.Error("查询订单失败", logger.Field("err", err))
			return resp, err
		}

		// 等待支付或成功支付则返回，否则新建订单
		if queryResp.Status == Paying || queryResp.Status == PayOk {
			resp.Status = queryResp.Status
			return resp, nil
		}
	}

	// 查询是否有刚初始化的订单
	var orderSn string
	if checkIsPayInit(req.BillSn) {
		var orderRecordInfo ErpOrderRecord
		err := orm.Eloquent.Table("erp_order_record").Where("bill_sn = ? and status = ?", req.BillSn, PayInit).
			Find(&orderRecordInfo).Error
		if err != nil {
			logger.Error("未查询到订单:", logger.Field("err", err))
			return resp, errors.New("未查询到待支付订单")
		}
		orderSn = orderRecordInfo.OutOrderNo
	} else {
		// 创建支付订单号，并记录到支付记录表，关联零售订单号
		orderSn = GetErpOrderSn()
		var erpOrderRecord ErpOrderRecord
		erpOrderRecord.ErpOrderId = orderInfo.ID
		erpOrderRecord.BillSn = orderInfo.BillSn
		erpOrderRecord.OutOrderNo = orderSn
		erpOrderRecord.Status = PayInit
		err = orm.Eloquent.Table("erp_order_record").Create(&erpOrderRecord).Error
		if err != nil {
			logger.Error("Create erp_order_record err:", logger.Field("err", err))
			return resp, err
		}
	}
	resp.Status = Paying

	// 发起支付扣款
	hmPayResp, err := pay.HmJsPayBToCOrder(orderSn, amount, req.AuthCode, "")
	if err != nil {
		logger.Error("HmJsPayBToCOrder err")
		return resp, err
	}

	// 更新支付状态
	var payStatus string
	switch hmPayResp.SubCode {
	case "SUCCESS":
		payStatus = PayOk
	case "FAILED":
		payStatus = PayFailed
	case "WAITING_PAYMENT":
		payStatus = Paying
	default:
		payStatus = PayUnknown
	}
	updateInfo := map[string]interface{}{
		"bank_order_no": hmPayResp.BankOrderNo,
		"plat_trx_no":   hmPayResp.PlatTrxNo,
		"total_amount":  hmPayResp.TotalAmount,
		"pay_way":       hmPayResp.PayWay,
		"status":        payStatus,
	}

	begin := orm.Eloquent.Begin()
	err = begin.Model(&ErpOrderRecord{}).Where("out_order_no = ?", orderSn).
		Updates(updateInfo).Error
	if err != nil {
		begin.Rollback()
		logger.Error("update erp_order_record err:", logger.Field("err", err))
		return resp, err
	}

	if payStatus == PayOk { // 支付成功
		// 更新零售订单表
		err = begin.Model(&ErpOrder{}).Where("id = ?", orderInfo.ID).
			Update("pay_status", HavePaid).Error
		if err != nil {
			begin.Rollback()
			logger.Error("update erp_order_record err:", logger.Field("err", err))
			return resp, err
		}
	}

	err = begin.Commit().Error
	if err != nil {
		begin.Rollback()
		return resp, fmt.Errorf("ErpOrderPay[commit err]：%v", err)
	}

	resp.Status = payStatus
	return resp, nil
}

// QueryErpOrderPayStatus 查询零售订单支付状态
func QueryErpOrderPayStatus(billSn string) (*ErpOrderPayResp, error) {
	resp := &ErpOrderPayResp{
		Status: Paying,
	}
	// 查询待支付订单
	var orderRecordInfo ErpOrderRecord
	err := orm.Eloquent.Table("erp_order_record").Where("bill_sn = ? and status = ?", billSn, Paying).
		Find(&orderRecordInfo).Error
	if err != nil {
		logger.Error("未查询到订单:", logger.Field("err", err))
		resp.Status = PayFailed
		return resp, errors.New("未查询到待支付订单")
	}

	// 查询支付状态
	hmQueryResp, err := pay.HmQueryOrder(orderRecordInfo.OutOrderNo)
	if err != nil {
		logger.Error("查询失败:", logger.Field("err", err))
		return resp, err
	}

	// 更新订单状态
	var payStatus string
	switch hmQueryResp.SubCode {
	case "SUCCESS":
		payStatus = PayOk
	case "FAILED":
		payStatus = PayFailed
	case "WAITING_PAYMENT":
		payStatus = Paying
	default:
		payStatus = PayUnknown
	}
	updateInfo := map[string]interface{}{
		"bank_order_no": hmQueryResp.BankOrderNo,
		"plat_trx_no":   hmQueryResp.PlatTrxNo,
		"total_amount":  hmQueryResp.TotalAmount,
		"pay_way":       hmQueryResp.PayWayCode,
		"status":        payStatus,
	}

	begin := orm.Eloquent.Begin()
	err = begin.Model(&ErpOrderRecord{}).Where("out_order_no = ?", orderRecordInfo.OutOrderNo).
		Updates(updateInfo).Error
	if err != nil {
		begin.Rollback()
		logger.Error("query update erp_order_record err:", logger.Field("err", err))
		return resp, err
	}

	if payStatus == PayOk { // 支付成功
		// 更新零售订单表
		err = begin.Model(&ErpOrder{}).Where("id = ?", orderRecordInfo.ID).
			Update("pay_status", HavePaid).Error
		if err != nil {
			begin.Rollback()
			logger.Error("query update erp_order_record err:", logger.Field("err", err))
			return resp, err
		}
	}

	err = begin.Commit().Error
	if err != nil {
		begin.Rollback()
		return resp, fmt.Errorf("QueryErpOrderPayStatus[commit err]：%v", err)
	}

	resp.Status = payStatus
	return resp, nil
}