Merge branch 'feat/BE/Sprint-5' into 'feat/BE/US-159,160/marketing'

# Conflicts:
#   internal/modules/production/project_flocks/controllers/projectflock.controller.go
#   internal/modules/production/project_flocks/dto/projectflock.dto.go
#   internal/modules/production/project_flocks/route.go
#   internal/modules/production/transfer_layings/dto/transfer_laying.dto.go

internal/modules/master/kandangs/repositories/kandang.repository.go

@@ -7,6 +7,7 @@ import (
 	"gitlab.com/mbugroup/lti-api.git/internal/common/repository"
 	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
 	"gitlab.com/mbugroup/lti-api.git/internal/utils"
+	"github.com/gofiber/fiber/v2"
 	"gorm.io/gorm"
 )
 
@@ -120,9 +121,41 @@ func (r *KandangRepositoryImpl) UpsertProjectFlockKandang(ctx context.Context, p
 		Where("project_flock_id = ? AND kandang_id = ?", projectFlockID, kandangID).
 		First(&link).Error
 	if errors.Is(err, gorm.ErrRecordNotFound) {
+		var project entity.ProjectFlock
+		if err := r.db.WithContext(ctx).
+			Select("id, location_id").
+			First(&project, projectFlockID).Error; err != nil {
+			return err
+		}
+
+		var kandang entity.Kandang
+		if err := r.db.WithContext(ctx).
+			Select("id, location_id").
+			First(&kandang, kandangID).Error; err != nil {
+			return err
+		}
+		if kandang.LocationId != project.LocationId {
+			return fiber.NewError(fiber.StatusBadRequest, "Kandang tidak berada pada lokasi yang sama dengan project flock")
+		}
+
+		// Determine project's period from existing pivot rows so the new kandang
+		// shares the same period.
+		var period int
+		if err := r.db.WithContext(ctx).
+			Table("project_flock_kandangs").
+			Where("project_flock_id = ?", projectFlockID).
+			Select("COALESCE(MAX(period), 0)").
+			Scan(&period).Error; err != nil {
+			return err
+		}
+		if period <= 0 {
+			period = 1
+		}
+
 		link = entity.ProjectFlockKandang{
 			ProjectFlockId: projectFlockID,
 			KandangId:      kandangID,
+			Period:         period,
 		}
 		return r.db.WithContext(ctx).Create(&link).Error
 	}