package backend

import (
	"context"
	"fmt"
	"kpt-pasture/model"
	"net/http"
	"strings"

	pasturePb "gitee.com/xuyiping_admin/go_proto/proto/go/backend/cow"
	"gitee.com/xuyiping_admin/pkg/xerr"
	"gorm.io/gorm"
)

func (s *StoreEntry) EnterList(ctx context.Context, req *pasturePb.SearchEventRequest, pagination *pasturePb.PaginationModel) (*pasturePb.SearchEnterEventResponse, error) {
	eventEnterList := make([]*pasturePb.SearchEnterData, 0)
	var count int64 = 0
	pref := s.DB.Table(fmt.Sprintf("%s as a", new(model.EventEnter).TableName())).
		Select(`a.id,a.birth_at,a.weaning_at,a.dry_milk_at,a.cow_source_id,a.remarks,a.mating_at,a.status,
			a.lact,a.breed_status_id,a.mother_id,a.cow_kind_id,a.cow_id,a.ear_number,a.sex,a.created_at,
			a.weight / 100 as weight,a.price / 100 as price,b.name as breed_status_name,
			c.name as cow_source_name,d.name as cow_type_name,e.name as cow_kind_name,f.name as pen_name,g.name as operation_name`).
		Joins(fmt.Sprintf("JOIN %s AS b ON a.breed_status_id = b.id", new(model.ConfigBreedStatus).TableName())).
		Joins(fmt.Sprintf("JOIN %s AS c on a.cow_source_id = c.id", new(model.ConfigCowSource).TableName())).
		Joins(fmt.Sprintf("JOIN %s AS d on a.cow_type_id = d.id", new(model.ConfigCowType).TableName())).
		Joins(fmt.Sprintf("JOIN %s AS e ON a.cow_kind_id = e.id", new(model.ConfigCowKind).TableName())).
		Joins(fmt.Sprintf("JOIN %s AS f on a.pen_id = f.id", new(model.Pen).TableName())).
		Joins(fmt.Sprintf("JOIN %s AS g on a.operation_id = g.id", new(model.SystemUser).TableName()))
	if len(req.CowId) > 0 {
		cowIds := strings.Split(req.CowId, ",")
		pref.Where("a.cow_id IN ?", cowIds)
	}

	if err := pref.Order("a.id desc").
		Count(&count).Limit(int(pagination.PageSize)).
		Offset(int(pagination.PageOffset)).
		Find(&eventEnterList).Error; err != nil {
		return nil, xerr.WithStack(err)
	}

	return &pasturePb.SearchEnterEventResponse{
		Code:    http.StatusOK,
		Message: "ok",
		Data: &pasturePb.SearchEnterEventData{
			List:     eventEnterList,
			Total:    int32(count),
			PageSize: pagination.PageSize,
			Page:     pagination.Page,
		},
	}, nil
}

func (s *StoreEntry) CreateEnter(ctx context.Context, req *pasturePb.SearchEnterData) error {
	if err := s.DB.Transaction(func(tx *gorm.DB) error {
		newCowData := model.NewCow(req)
		if err := tx.Create(newCowData).Error; err != nil {
			return xerr.WithStack(err)
		}

		operationUser, _ := s.GetCurrentSystemUser(ctx)
		if err := tx.Create(model.NewEventEnter(newCowData.Id, operationUser.Id, req)).Error; err != nil {
			return xerr.WithStack(err)
		}

		return nil
	}); err != nil {
		return xerr.WithStack(err)
	}
	return nil
}

func (s *StoreEntry) GroupTransferList(ctx context.Context, req *pasturePb.SearchEventRequest, pagination *pasturePb.PaginationModel) (*pasturePb.SearchTransferGroupEventResponse, error) {
	eventGroupTransferList := make([]*pasturePb.SearchTransferGroupData, 0)
	var count int64 = 0
	pref := s.DB.Table(fmt.Sprintf("%s as a", new(model.EventTransferGroup).TableName())).
		Select(`a.id,a.cow_id,a.transfer_in_pen_id,a.transfer_out_pen_id,a.lact,a.remarks,a.transfer_reason_id,
			a.transfer_date,a.created_at,a.staff_member_id,b.name as transfer_in_pen_name,c.name as transfer_out_pen_name,
			d.name as transfer_reason_name,e.name as staff_member_name,f.lact,f.ear_number`).
		Joins(fmt.Sprintf("JOIN %s AS b ON a.transfer_in_pen_id = b.id", new(model.Pen).TableName())).
		Joins(fmt.Sprintf("JOIN %s AS c on a.transfer_out_pen_id = c.id", new(model.Pen).TableName())).
		Joins(fmt.Sprintf("JOIN %s AS d on a.transfer_reason_id = d.id", new(model.ConfigTransferPenReason).TableName())).
		Joins(fmt.Sprintf("JOIN %s AS e ON a.staff_member_id = e.id", new(model.SystemUser).TableName())).
		Joins(fmt.Sprintf("JOIN %s AS f ON a.cow_id = f.id", new(model.Cow).TableName()))
	if len(req.CowId) > 0 {
		cowIds := strings.Split(req.CowId, ",")
		pref.Where("a.cow_id IN ?", cowIds)
	}

	if err := pref.Order("a.id desc").Group("a.id").
		Count(&count).Limit(int(pagination.PageSize)).
		Offset(int(pagination.PageOffset)).
		Find(&eventGroupTransferList).Error; err != nil {
		return nil, xerr.WithStack(err)
	}

	return &pasturePb.SearchTransferGroupEventResponse{
		Code:    http.StatusOK,
		Message: "ok",
		Data: &pasturePb.SearchTransferGroupEventData{
			List:     eventGroupTransferList,
			Total:    int32(count),
			PageSize: pagination.PageSize,
			Page:     pagination.Page,
		},
	}, nil
}

func (s *StoreEntry) CreateGroupTransfer(ctx context.Context, req *pasturePb.TransferGroupEventRequest) error {
	system, _ := s.GetCurrentSystemUser(ctx)
	res := make([]*model.EventTransferGroup, 0)
	for _, v := range req.Body {
		cow, err := s.GetCowInfo(ctx, int64(v.CowId))
		if err != nil {
			return xerr.WithStack(err)
		}
		// 转去栏舍和当前栏舍相同，则不处理
		if cow.PenId == int64(v.TransferInPenId) {
			continue
		}
		pen, err := s.GetPenInfo(ctx, int64(v.TransferInPenId))
		if err != nil {
			return xerr.WithStack(err)
		}

		transferReasonData, err := s.GetTransferReasonInfo(ctx, int64(v.TransferReasonId))
		if err != nil {
			return xerr.WithStack(err)
		}

		staffMemberData, err := s.GetSystemUserInfo(ctx, int64(v.StaffMemberId))
		if err != nil {
			return xerr.WithStack(err)
		}

		res = append(res, &model.EventTransferGroup{
			CowId:            int64(v.CowId),
			TransferInPenId:  int64(v.TransferInPenId),
			TransferOutPenId: pen.Id,
			Lact:             cow.Lact,
			TransferDate:     v.TransferDate,
			TransferReasonId: transferReasonData.Id,
			Remarks:          v.Remarks,
			StaffMemberId:    staffMemberData.Id,
			OperationId:      system.Id,
		})
	}
	if len(res) <= 0 {
		return nil
	}

	if err := s.DB.Transaction(func(tx *gorm.DB) error {
		if err := tx.Create(res).Error; err != nil {
			return xerr.WithStack(err)
		}
		for _, v := range res {
			cow, err := s.GetCowInfo(ctx, v.CowId)
			if err != nil {
				return xerr.WithStack(err)
			}
			if err = s.DB.Model(cow).Update("pen_id", v.TransferInPenId).Error; err != nil {
				return xerr.WithStack(err)
			}
		}
		return nil
	}); err != nil {
		return xerr.WithStack(err)
	}

	return nil
}