package backend

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

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

func (s *StoreEntry) ParseCowIds(ctx context.Context, pastureId int64, cowIds string) ([]*model.Cow, error) {
	if len(cowIds) == 0 {
		return nil, xerr.Custom("cow id is required")
	}
	cowIdStr := strings.Split(cowIds, ",")
	var cowIdInts = make([]int64, 0)
	for _, v := range cowIdStr {
		cowId, err := strconv.ParseInt(v, 10, 64)
		if err != nil {
			return nil, xerr.Customf("错误的牛号: %s", v)
		}
		cowIdInts = append(cowIdInts, cowId)
	}

	cowList, err := s.GetCowInfoByCowIds(ctx, pastureId, cowIdInts)
	if err != nil {
		return nil, xerr.WithStack(err)
	}
	return cowList, nil
}

func (s *StoreEntry) EnterList(ctx context.Context, req *pasturePb.SearchEventRequest, pagination *pasturePb.PaginationModel) (*pasturePb.SearchEnterEventResponse, error) {
	userModel, err := s.GetUserModel(ctx)
	if err != nil {
		return nil, xerr.WithStack(err)
	}

	eventEnterList := make([]*model.EventEnter, 0)
	var count int64 = 0
	pref := s.DB.Model(new(model.EventEnter)).
		Where("pasture_id = ?", userModel.AppPasture.Id)
	if len(req.CowId) > 0 {
		cowIds := strings.Split(req.CowId, ",")
		pref.Where("cow_id IN ?", cowIds)
	}

	if req.EarNumber != "" {
		pref.Where("ear_number = ?", req.EarNumber)
	}

	if req.StartDayAt > 0 && req.EndDayAt > 0 && req.EndDayAt >= req.StartDayAt {
		pref.Where("enter_at BETWEEN ? AND ?", req.StartDayAt, req.EndDayAt)
	}

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

	penMap := s.PenMap(ctx, userModel.AppPasture.Id)
	breedStatusMap := s.CowBreedStatusMap()
	cowSourceMap := s.CowSourceMap()
	cowTypeMap := s.CowTypeMap()
	cowKindMap := s.CowKindMap()

	return &pasturePb.SearchEnterEventResponse{
		Code: http.StatusOK,
		Msg:  "ok",
		Data: &pasturePb.SearchEnterEventData{
			List:     model.EventEnterSlice(eventEnterList).ToPB(penMap, breedStatusMap, cowSourceMap, cowTypeMap, cowKindMap),
			Total:    int32(count),
			PageSize: pagination.PageSize,
			Page:     pagination.Page,
		},
	}, nil
}

func (s *StoreEntry) CreateEnter(ctx context.Context, req *pasturePb.EventEnterRequest) (err error) {
	userModel, err := s.GetUserModel(ctx)
	if err != nil {
		return xerr.WithStack(err)
	}

	if err = s.EnterCheck(ctx, req); err != nil {
		return xerr.WithStack(err)
	}

	req.MessengerId = int32(userModel.SystemUser.Id)
	req.MessengerName = userModel.SystemUser.Name
	if req.OperationId > 0 {
		systemUser, _ := s.GetSystemUserById(ctx, int64(req.OperationId))
		req.OperationName = systemUser.Name
	}

	penMap := s.PenMap(ctx, userModel.AppPasture.Id)
	if len(penMap) <= 0 {
		return xerr.Customf("请先设置牛舍信息")
	}

	newCow := model.NewEnterCow(userModel.AppPasture.Id, req, penMap)
	if err = s.DB.Transaction(func(tx *gorm.DB) error {
		if err = tx.Create(newCow).Error; err != nil {
			return xerr.WithStack(err)
		}
		newEventEnter := model.NewEventEnter(userModel.AppPasture.Id, newCow.Id, req)
		if err = tx.Create(newEventEnter).Error; err != nil {
			return xerr.WithStack(err)
		}
		eventWeight := model.NewEventWeight(
			userModel.AppPasture.Id,
			newCow,
			userModel.SystemUser,
			&pasturePb.EventWeight{
				WeightAt:      req.EnterAt,
				Remarks:       "入场体重",
				OperationId:   req.OperationId,
				OperationName: req.OperationName,
				Weight:        req.Weight,
			})
		if err = tx.Create(eventWeight).Error; err != nil {
			return xerr.WithStack(err)
		}

		cowLogs := s.SubmitEventLog(ctx, userModel.AppPasture.Id, newCow, pasturePb.EventType_Enter, req)
		if err = tx.Table(cowLogs.TableName()).Create(cowLogs).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) {
	userModel, err := s.GetUserModel(ctx)
	if err != nil {
		return nil, xerr.WithStack(err)
	}

	eventGroupTransferList := make([]*pasturePb.EventTransferGroupData, 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.pen_in_id as transfer_in_pen_id,a.pen_out_id as transfer_out_pen_id,a.lact,a.remarks,
		a.transfer_reason_id,a.transfer_reason_name,a.transfer_date,a.created_at,a.operation_id,a.operation_name,
		b.name as transfer_in_pen_name,c.name as transfer_out_pen_name,f.lact,f.ear_number`).
		Joins(fmt.Sprintf("JOIN %s AS b ON a.pen_in_id = b.id", new(model.Pen).TableName())).
		Joins(fmt.Sprintf("JOIN %s AS c on a.pen_out_id = c.id", new(model.Pen).TableName())).
		Joins(fmt.Sprintf("JOIN %s AS f ON a.cow_id = f.id", new(model.Cow).TableName())).
		Where("a.pasture_id = ?", userModel.AppPasture.Id)

	if req.EarNumber != "" {
		pref.Where("a.ear_number = ?", req.EarNumber)
	}

	if req.TransferReasonId > 0 {
		pref.Where("a.transfer_reason_id = ?", req.TransferReasonId)
	}

	if req.TransferInPenId > 0 {
		pref.Where("a.pen_in_id = ?", req.TransferInPenId)
	}

	if req.StartDayAt > 0 && req.EndDayAt > 0 && req.EndDayAt >= req.StartDayAt {
		pref.Where("a.transfer_date BETWEEN ? AND ?", time.Unix(int64(req.StartDayAt), 0).Format(model.LayoutDate2), time.Unix(int64(req.EndDayAt), 0).Format(model.LayoutDate2))
	}

	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,
		Msg:  "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) (err error) {
	userModel, err := s.GetUserModel(ctx)
	if err != nil {
		return xerr.WithStack(err)
	}

	if len(req.Body) <= 0 {
		return xerr.Custom("请选择牛只数据")
	}

	if len(req.Body) > 50 {
		return xerr.Custom("一次最多只能转移50头牛")
	}

	transferReasonMap := s.GroupTransferReasonMap()
	penMap := s.PenMap(ctx, userModel.AppPasture.Id)

	if err = s.DB.Transaction(func(tx *gorm.DB) error {
		for _, v := range req.Body {
			cow, err := s.GetCowInfoByEarNumber(ctx, userModel.AppPasture.Id, v.EarNumber)
			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 == v.TransferInPenId {
				return xerr.Custom("转入栏舍和牛只当前栏舍不能一致")
			}
			operationUser, err := s.GetSystemUserById(ctx, int64(v.OperationId))
			if err != nil {
				return xerr.WithStack(err)
			}

			newEventTransferGroup := model.NewEventTransferGroup(userModel.AppPasture.Id, cow, v, transferReasonMap, userModel.SystemUser, operationUser)
			if err = tx.Model(new(model.EventTransferGroup)).Create(newEventTransferGroup).Error; err != nil {
				return xerr.WithStack(err)
			}

			if err = s.DB.Model(cow).
				Updates(map[string]interface{}{
					"pen_id":   v.TransferInPenId,
					"pen_name": penMap[v.TransferReasonId].Name,
				}).Error; err != nil {
				return xerr.WithStack(err)
			}

			// 事件日志
			cowLogs := s.SubmitEventLog(ctx, userModel.AppPasture.Id, cow, pasturePb.EventType_Transfer_Ben, newEventTransferGroup)
			if err = tx.Table(cowLogs.TableName()).Create(cowLogs).Error; err != nil {
				return xerr.WithStack(err)
			}
		}
		return nil
	}); err != nil {
		return xerr.WithStack(err)
	}

	return nil
}

func (s *StoreEntry) BodyScoreList(ctx context.Context, req *pasturePb.SearchEventRequest, pagination *pasturePb.PaginationModel) (*pasturePb.SearchBodyScoreEventResponse, error) {
	userModel, err := s.GetUserModel(ctx)
	if err != nil {
		return nil, xerr.WithStack(err)
	}

	bodyScoreList := make([]*pasturePb.BodyScoreList, 0)
	var count int64 = 0
	pref := s.DB.Model(new(model.EventBodyScore)).
		Select("*,score as body_score").
		Where("pasture_id = ?", userModel.AppPasture.Id)
	if len(req.CowId) > 0 {
		cowIds := strings.Split(req.CowId, ",")
		pref.Where("cow_id IN ?", cowIds)
	}

	if req.EarNumber != "" {
		pref.Where("ear_number = ?", req.EarNumber)
	}

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

	return &pasturePb.SearchBodyScoreEventResponse{
		Code: http.StatusOK,
		Msg:  "ok",
		Data: &pasturePb.SearchBodyScoreData{
			List:     bodyScoreList,
			Total:    int32(count),
			PageSize: pagination.PageSize,
			Page:     pagination.Page,
		},
	}, nil
}

func (s *StoreEntry) CreateBodyScore(ctx context.Context, req *pasturePb.BodyScoreEventRequest) error {
	if req.CowId <= 0 {
		return xerr.Custom("请选择相关牛只")
	}
	userModel, err := s.GetUserModel(ctx)
	if err != nil {
		return xerr.WithStack(err)
	}

	operationUser, err := s.GetSystemUserById(ctx, int64(req.OperationId))
	if err != nil {
		return xerr.WithStack(err)
	}
	req.OperationName = operationUser.Name
	cowInfo, err := s.GetCowInfoByCowId(ctx, userModel.AppPasture.Id, int64(req.CowId))
	if err != nil {
		return xerr.WithStack(err)
	}

	bodyScourEvent := model.NewEventBodyScore(cowInfo, userModel.AppPasture.Id, userModel.SystemUser, req)
	return s.DB.Model(new(model.EventBodyScore)).Create(bodyScourEvent).Error
}

func (s *StoreEntry) WeightList(ctx context.Context, req *pasturePb.SearchEventRequest, pagination *pasturePb.PaginationModel) (*pasturePb.SearchWeightEventResponse, error) {
	userModel, err := s.GetUserModel(ctx)
	if err != nil {
		return nil, xerr.WithStack(err)
	}

	weightList := make([]*pasturePb.SearchWeightList, 0)
	var count int64 = 0
	pref := s.DB.Table(fmt.Sprintf("%s as a", new(model.EventWeight).TableName())).
		Select(`a.id,a.cow_id,a.ear_number,ROUND(a.weight/1000, 2) as weight,a.height,a.lact,a.day_age,a.weight_at,a.remarks,a.created_at,
		a.updated_at,a.message_id,a.operation_id,a.message_name,a.operation_name`).
		Where("a.pasture_id = ?", userModel.AppPasture.Id)
	if len(req.CowId) > 0 {
		cowIds := strings.Split(req.CowId, ",")
		pref.Where("a.cow_id IN ?", cowIds)
	}

	if req.EarNumber != "" {
		pref.Where("a.ear_number = ?", req.EarNumber)
	}

	if req.StartDayAt > 0 && req.EndDayAt > 0 && req.EndDayAt >= req.StartDayAt {
		pref.Where("a.weight_at BETWEEN ? AND ?", req.StartDayAt, req.EndDayAt)
	}

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

	return &pasturePb.SearchWeightEventResponse{
		Code: http.StatusOK,
		Msg:  "ok",
		Data: &pasturePb.SearchWeightData{
			List:     weightList,
			Total:    int32(count),
			PageSize: pagination.PageSize,
			Page:     pagination.Page,
		},
	}, nil
}

func (s *StoreEntry) WeightBatch(ctx context.Context, req *pasturePb.BatchEventWeight) (err error) {
	userModel, err := s.GetUserModel(ctx)
	if err != nil {
		return xerr.WithStack(err)
	}

	if len(req.Items) <= 0 {
		return xerr.Custom("称重数据不能为空")
	}

	if len(req.Items) > 50 {
		return xerr.Custom("一次最多只能转移50头牛")
	}

	if err = s.DB.Transaction(func(tx *gorm.DB) error {
		for _, item := range req.Items {
			cow, err := s.GetCowInfoByEarNumber(ctx, userModel.AppPasture.Id, item.EarNumber)
			if err != nil {
				return xerr.WithStack(err)
			}

			// 更新牛只信息
			cow.EventWeightUpdate(int64(item.Weight*1000), int64(item.WeightAt))
			if err = tx.Model(new(model.Cow)).
				Select("last_second_weight_at", "last_second_weight", "last_weight_at", "current_weight").
				Where("id = ?", cow.Id).
				Where("admission_status = ?", pasturePb.AdmissionStatus_Admission).
				Updates(cow).Error; err != nil {
				return xerr.WithStack(err)
			}

			operationUser, _ := s.GetSystemUserById(ctx, int64(item.OperationId))
			item.OperationName = operationUser.Name
			// 创建牛只的体重记录
			eventWeight := model.NewEventWeight(userModel.AppPasture.Id, cow, userModel.SystemUser, item)
			if err = tx.Create(eventWeight).Error; err != nil {
				return xerr.WithStack(err)
			}

			cowLogs := s.SubmitEventLog(ctx, userModel.AppPasture.Id, cow, pasturePb.EventType_Weight, item)
			if err = tx.Table(cowLogs.TableName()).Create(cowLogs).Error; err != nil {
				return xerr.WithStack(err)
			}
		}
		return nil
	}); err != nil {
		return xerr.WithStack(err)
	}

	return nil
}