Feat[BE]: implement max target quantity retrieval for kandangs and update routes

internal/modules/production/project_flocks/repositories/projectflock_kandang.repository.go

@@ -85,6 +85,7 @@ func (r *projectFlockKandangRepositoryImpl) GetByProjectFlockID(ctx context.Cont
 	var records []entity.ProjectFlockKandang
 	if err := r.db.WithContext(ctx).
 		Where("project_flock_id = ?", projectFlockID).
+		Preload("Kandang").
 		Find(&records).Error; err != nil {
 		return nil, err
 	}

internal/modules/production/transfer_layings/controllers/transfer_laying.controller.go

@@ -218,3 +218,29 @@ func (u *TransferLayingController) GetAvailableQtyPerKandang(c *fiber.Ctx) error
 			Data:    resp,
 		})
 }
+
+func (u *TransferLayingController) GetMaxTargetQtyPerKandang(c *fiber.Ctx) error {
+	projectFlockID, err := strconv.ParseUint(c.Params("project_flock_id"), 10, 32)
+	if err != nil {
+		return fiber.NewError(fiber.StatusBadRequest, "Invalid project_flock_id")
+	}
+	kandangMaxTargetQty, err := u.TransferLayingService.GetMaxTargetQtyPerKandang(c, uint(projectFlockID))
+	if err != nil {
+		return err
+	}
+
+	kandangs := make([]dto.KandangMaxTargetQtyDTO, 0, len(kandangMaxTargetQty))
+	for pfkId, maxTargetQty := range kandangMaxTargetQty {
+		kandangs = append(kandangs, dto.ToKandangMaxTargetQtyDTO(pfkId, maxTargetQty))
+	}
+
+	resp := dto.ToMaxTargetQtyForTransferDTO(uint(projectFlockID), kandangs)
+
+	return c.Status(fiber.StatusOK).
+		JSON(response.Success{
+			Code:    fiber.StatusOK,
+			Status:  "success",
+			Message: "Get max target quantity successfully",
+			Data:    resp,
+		})
+}

internal/modules/production/transfer_layings/dto/transfer_laying.dto.go

@@ -94,6 +94,18 @@ type AvailableQtyForTransferDTO struct {
 	Kandangs         []KandangAvailableQtyDTO `json:"kandangs"`
 }
 
+// === Max Target Quantity DTOs ===
+
+type KandangMaxTargetQtyDTO struct {
+	ProjectFlockKandangId uint    `json:"project_flock_kandang_id"`
+	MaxTargetQty          float64 `json:"max_target_qty"`
+}
+
+type MaxTargetQtyForTransferDTO struct {
+	ProjectFlockId       uint                     `json:"project_flock_id"`
+	ProjectFlockKandangs []KandangMaxTargetQtyDTO `json:"project_flock_kandangs"`
+}
+
 // === Mapper Functions ===
 
 func ToProjectFlockSummaryDTO(pf *entity.ProjectFlock) *ProjectFlockSummaryDTO {
@@ -285,3 +297,17 @@ func ToTransferLayingListDTOs(items []entity.LayingTransfer) []TransferLayingLis
 	}
 	return result
 }
+
+func ToKandangMaxTargetQtyDTO(pfkId uint, maxTargetQTY float64) KandangMaxTargetQtyDTO {
+	return KandangMaxTargetQtyDTO{
+		ProjectFlockKandangId: uint(pfkId),
+		MaxTargetQty:          maxTargetQTY,
+	}
+}
+
+func ToMaxTargetQtyForTransferDTO(pfId uint, kandangs []KandangMaxTargetQtyDTO) MaxTargetQtyForTransferDTO {
+	return MaxTargetQtyForTransferDTO{
+		ProjectFlockId:       pfId,
+		ProjectFlockKandangs: kandangs,
+	}
+}

internal/modules/production/transfer_layings/route.go

@@ -21,11 +21,12 @@ func TransferLayingRoutes(v1 fiber.Router, u user.UserService, s transferLaying.
 	// route.Delete("/:id", m.Auth(u), ctrl.DeleteOne)
 	// route.Post("/approval", m.Auth(u), ctrl.Approval)
 
-	route.Get("/",m.RequirePermissions(m.P_TransferToLaying_GetAll), ctrl.GetAll)
-	route.Post("/",m.RequirePermissions(m.P_TransferToLaying_CreateOne), ctrl.CreateOne)
-	route.Get("/:id",m.RequirePermissions(m.P_TransferToLaying_GetOne), ctrl.GetOne)
-	route.Patch("/:id",m.RequirePermissions(m.P_TransferToLaying_UpdateOne), ctrl.UpdateOne)
-	route.Delete("/:id",m.RequirePermissions(m.P_TransferToLaying_DeleteOne), ctrl.DeleteOne)
-	route.Post("/approvals",m.RequirePermissions(m.P_TransferToLaying_Approval), ctrl.Approval)
-	route.Get("/project-flocks/:project_flock_id/available-qty",m.RequirePermissions(m.P_TransferToLaying_GetAvailableQty), ctrl.GetAvailableQtyPerKandang)
+	route.Get("/", m.RequirePermissions(m.P_TransferToLaying_GetAll), ctrl.GetAll)
+	route.Post("/", m.RequirePermissions(m.P_TransferToLaying_CreateOne), ctrl.CreateOne)
+	route.Get("/:id", m.RequirePermissions(m.P_TransferToLaying_GetOne), ctrl.GetOne)
+	route.Patch("/:id", m.RequirePermissions(m.P_TransferToLaying_UpdateOne), ctrl.UpdateOne)
+	route.Delete("/:id", m.RequirePermissions(m.P_TransferToLaying_DeleteOne), ctrl.DeleteOne)
+	route.Post("/approvals", m.RequirePermissions(m.P_TransferToLaying_Approval), ctrl.Approval)
+	route.Get("/project-flocks/:project_flock_id/available-qty", m.RequirePermissions(m.P_TransferToLaying_GetAvailableQty), ctrl.GetAvailableQtyPerKandang)
+	route.Get("/project-flocks/:project_flock_id/max-target-qty", m.RequirePermissions(m.P_TransferToLaying_CreateOne), ctrl.GetMaxTargetQtyPerKandang)
 }

internal/modules/production/transfer_layings/services/transfer_laying.service.go

@@ -34,6 +34,7 @@ type TransferLayingService interface {
 	DeleteOne(ctx *fiber.Ctx, id uint) error
 	Approval(ctx *fiber.Ctx, req *validation.Approve) ([]entity.LayingTransfer, error)
 	GetAvailableQtyPerKandang(ctx *fiber.Ctx, projectFlockID uint) (*entity.ProjectFlock, map[uint]float64, error)
+	GetMaxTargetQtyPerKandang(ctx *fiber.Ctx, projectFlockID uint) (map[uint]float64, error)
 }
 
 type transferLayingService struct {
@@ -888,3 +889,39 @@ func (s *transferLayingService) validateKandangOwnership(
 
 	return nil
 }
+
+func (s transferLayingService) GetMaxTargetQtyPerKandang(c *fiber.Ctx, projectFlockID uint) (map[uint]float64, error) {
+
+	if err := commonSvc.EnsureRelations(c.Context(),
+		commonSvc.RelationCheck{Name: "Project Flock", ID: &projectFlockID, Exists: s.ProjectFlockRepo.IdExists},
+	); err != nil {
+		return nil, err
+	}
+
+	projectFlockKandangs, err := s.ProjectFlockKandangRepo.GetByProjectFlockID(c.Context(), projectFlockID)
+	if err != nil {
+		return nil, err
+	}
+
+	kandangMaxTargetQty := make(map[uint]float64)
+	for _, projectFlockKandang := range projectFlockKandangs {
+
+		capacity := projectFlockKandang.Kandang.Capacity
+
+		availableQty, err := s.ProjectFlockPopulationRepo.GetAvailableQtyByProjectFlockKandangID(
+			c.Context(),
+			projectFlockKandang.Id,
+		)
+		if err != nil {
+			return nil, err
+		}
+
+		kandangMaxTargetQty[projectFlockKandang.Id] = capacity - availableQty
+
+		if kandangMaxTargetQty[projectFlockKandang.Id] < 0 {
+			kandangMaxTargetQty[projectFlockKandang.Id] = 0
+		}
+	}
+
+	return kandangMaxTargetQty, nil
+}