FIX[BE]: fixing transfer to laying and implement correct fifo stock

internal/database/migrations/20260109145555_move_fifo_fields_from_laying_transfers_to_detail_tables.down.sql

@@ -0,0 +1,79 @@
+-- Rollback: Revert FIFO fields back to laying_transfers from detail tables
+
+-- ============================================================================
+-- PART 1: Remove FIFO columns from detail tables
+-- ============================================================================
+
+-- Add back old qty column first
+ALTER TABLE laying_transfer_sources
+    ADD COLUMN IF NOT EXISTS qty NUMERIC(15, 3) NOT NULL DEFAULT 0;
+
+ALTER TABLE laying_transfer_targets
+    ADD COLUMN IF NOT EXISTS qty NUMERIC(15, 3) NOT NULL DEFAULT 0;
+
+-- Now drop FIFO columns
+ALTER TABLE laying_transfer_sources
+    DROP COLUMN IF EXISTS usage_qty,
+    DROP COLUMN IF EXISTS pending_usage_qty;
+
+ALTER TABLE laying_transfer_targets
+    DROP COLUMN IF EXISTS total_qty,
+    DROP COLUMN IF EXISTS total_used;
+
+-- ============================================================================
+-- PART 2: Add back FIFO columns to laying_transfers table
+-- ============================================================================
+
+-- Add columns back for USABLE role (source warehouse)
+ALTER TABLE laying_transfers
+    ADD COLUMN product_warehouse_id BIGINT,
+    ADD COLUMN pending_usage_qty NUMERIC(15, 3),
+    ADD COLUMN usage_qty NUMERIC(15, 3);
+
+-- Add columns back for STOCKABLE role (destination warehouse)
+ALTER TABLE laying_transfers
+    ADD COLUMN dest_product_warehouse_id BIGINT,
+    ADD COLUMN total_qty NUMERIC(15, 3) DEFAULT 0 NOT NULL,
+    ADD COLUMN total_used NUMERIC(15, 3) DEFAULT 0 NOT NULL;
+
+-- ============================================================================
+-- PART 3: Recreate foreign key constraints
+-- ============================================================================
+
+DO $$
+BEGIN
+    IF EXISTS (SELECT 1 FROM pg_tables WHERE tablename = 'product_warehouses') THEN
+        -- Add source product warehouse FK
+        ALTER TABLE laying_transfers
+            ADD CONSTRAINT fk_laying_transfers_product_warehouse_id
+            FOREIGN KEY (product_warehouse_id)
+            REFERENCES product_warehouses(id)
+            ON DELETE SET NULL;
+
+        -- Add destination product warehouse FK
+        ALTER TABLE laying_transfers
+            ADD CONSTRAINT fk_laying_transfers_dest_product_warehouse_id
+            FOREIGN KEY (dest_product_warehouse_id)
+            REFERENCES product_warehouses(id)
+            ON DELETE SET NULL;
+    END IF;
+END $$;
+
+-- ============================================================================
+-- PART 4: Recreate indexes for performance
+-- ============================================================================
+
+CREATE INDEX idx_laying_transfers_product_warehouse_id
+    ON laying_transfers(product_warehouse_id);
+
+CREATE INDEX idx_laying_transfers_dest_product_warehouse_id
+    ON laying_transfers(dest_product_warehouse_id);
+
+-- ============================================================================
+-- PART 5: Recreate comments for documentation
+-- ============================================================================
+
+COMMENT ON COLUMN laying_transfers.product_warehouse_id IS 'Product warehouse at source (Growing flock) - for USABLE role';
+COMMENT ON COLUMN laying_transfers.dest_product_warehouse_id IS 'Product warehouse at destination (Laying flock) - for STOCKABLE role';
+COMMENT ON COLUMN laying_transfers.total_qty IS 'Total lot quantity introduced to destination warehouse - for STOCKABLE role';
+COMMENT ON COLUMN laying_transfers.total_used IS 'Quantity already consumed from this lot at destination - for FIFO STOCKABLE role';

internal/database/migrations/20260109145555_move_fifo_fields_from_laying_transfers_to_detail_tables.up.sql

@@ -0,0 +1,73 @@
+-- Move FIFO fields from laying_transfers to detail tables (sources & targets)
+-- This enables proper FIFO integration for transfer laying with multiple sources and targets
+
+-- ============================================================================
+-- PART 1: Remove FIFO-related columns from laying_transfers table
+-- ============================================================================
+
+-- Drop foreign key constraints first
+DO $$
+BEGIN
+    -- Drop source product warehouse FK
+    IF EXISTS (
+        SELECT 1 FROM pg_constraint
+        WHERE conname = 'fk_laying_transfers_product_warehouse_id'
+    ) THEN
+        ALTER TABLE laying_transfers
+            DROP CONSTRAINT fk_laying_transfers_product_warehouse_id;
+    END IF;
+
+    -- Drop destination product warehouse FK
+    IF EXISTS (
+        SELECT 1 FROM pg_constraint
+        WHERE conname = 'fk_laying_transfers_dest_product_warehouse_id'
+    ) THEN
+        ALTER TABLE laying_transfers
+            DROP CONSTRAINT fk_laying_transfers_dest_product_warehouse_id;
+    END IF;
+END $$;
+
+-- Drop indexes
+DROP INDEX IF EXISTS idx_laying_transfers_product_warehouse_id;
+DROP INDEX IF EXISTS idx_laying_transfers_dest_product_warehouse_id;
+
+-- Remove columns from laying_transfers
+ALTER TABLE laying_transfers
+    DROP COLUMN IF EXISTS product_warehouse_id,
+    DROP COLUMN IF EXISTS dest_product_warehouse_id,
+    DROP COLUMN IF EXISTS pending_usage_qty,
+    DROP COLUMN IF EXISTS usage_qty,
+    DROP COLUMN IF EXISTS total_qty,
+    DROP COLUMN IF EXISTS total_used;
+
+-- ============================================================================
+-- PART 2: Add FIFO columns to laying_transfer_sources (USABLE role)
+-- ============================================================================
+
+ALTER TABLE laying_transfer_sources
+    ADD COLUMN usage_qty NUMERIC(15, 3) DEFAULT 0 NOT NULL,
+    ADD COLUMN pending_usage_qty NUMERIC(15, 3) DEFAULT 0 NOT NULL;
+
+-- Add comments for documentation
+COMMENT ON COLUMN laying_transfer_sources.usage_qty IS 'Quantity consumed from this source - for FIFO USABLE role';
+COMMENT ON COLUMN laying_transfer_sources.pending_usage_qty IS 'Quantity pending to consume from this source - for FIFO USABLE role';
+
+-- Drop old qty column as it's replaced by usage_qty
+ALTER TABLE laying_transfer_sources
+    DROP COLUMN IF EXISTS qty;
+
+-- ============================================================================
+-- PART 3: Add FIFO columns to laying_transfer_targets (STOCKABLE role)
+-- ============================================================================
+
+ALTER TABLE laying_transfer_targets
+    ADD COLUMN total_qty NUMERIC(15, 3) DEFAULT 0 NOT NULL,
+    ADD COLUMN total_used NUMERIC(15, 3) DEFAULT 0 NOT NULL;
+
+-- Add comments for documentation
+COMMENT ON COLUMN laying_transfer_targets.total_qty IS 'Total lot quantity introduced to this target warehouse - for FIFO STOCKABLE role';
+COMMENT ON COLUMN laying_transfer_targets.total_used IS 'Quantity already consumed from this lot at target warehouse - for FIFO STOCKABLE role';
+
+-- Drop old qty column as it's replaced by total_qty
+ALTER TABLE laying_transfer_targets
+    DROP COLUMN IF EXISTS qty;

internal/entities/laying_transfer.go

@@ -12,17 +12,6 @@ type LayingTransfer struct {
 	FromProjectFlockId uint           `gorm:"not null"`
 	ToProjectFlockId   uint           `gorm:"not null"`
 	TransferDate       time.Time      `gorm:"type:date;not null"`
-
-
-	PendingUsageQty    *float64       `gorm:"type:numeric(15,3)"`
-	UsageQty           *float64       `gorm:"type:numeric(15,3)"`
-	ProductWarehouseId *uint          `gorm:"type:bigint"` // Source PW (PULLET)
-
-	
-	DestProductWarehouseID *uint       `gorm:"column:dest_product_warehouse_id;type:bigint"` // Destination PW (LAYER)
-	TotalQty               float64    `gorm:"column:total_qty;type:numeric(15,3);default:0"`      // Total lot introduced to destination
-	TotalUsed              float64    `gorm:"column:total_used;type:numeric(15,3);default:0"`       // Already consumed from this lot
-
 	Notes              string         `gorm:"type:text"`
 	CreatedBy          uint           `gorm:"not null"`
 	CreatedAt          time.Time      `gorm:"autoCreateTime"`
@@ -31,8 +20,6 @@ type LayingTransfer struct {
 
 	FromProjectFlock    *ProjectFlock          `gorm:"foreignKey:FromProjectFlockId;references:Id"`
 	ToProjectFlock      *ProjectFlock          `gorm:"foreignKey:ToProjectFlockId;references:Id"`
-	ProductWarehouse    *ProductWarehouse      `gorm:"foreignKey:ProductWarehouseId;references:Id"`         // Source PW
-	DestProductWarehouse *ProductWarehouse      `gorm:"foreignKey:DestProductWarehouseID;references:Id"`     // Destination PW
 	CreatedUser         *User                  `gorm:"foreignKey:CreatedBy;references:Id"`
 	Sources             []LayingTransferSource `gorm:"foreignKey:LayingTransferId;constraint:OnDelete:CASCADE"`
 	Targets             []LayingTransferTarget `gorm:"foreignKey:LayingTransferId;constraint:OnDelete:CASCADE"`

internal/entities/laying_transfer_source.go

@@ -11,7 +11,8 @@ type LayingTransferSource struct {
 	LayingTransferId            uint           `gorm:"index;not null"`
 	SourceProjectFlockKandangId uint           `gorm:"not null"`
 	ProductWarehouseId          *uint          `gorm:""`
-	Qty                         float64        `gorm:"type:numeric(15,3);not null"`
+	UsageQty                    float64        `gorm:"type:numeric(15,3);default:0;not null"`        // FIFO USABLE field
+	PendingUsageQty             float64        `gorm:"type:numeric(15,3);default:0;not null"`        // FIFO USABLE field
 	Note                        string         `gorm:"type:text"`
 	CreatedAt                   time.Time      `gorm:"autoCreateTime"`
 	UpdatedAt                   time.Time      `gorm:"autoUpdateTime"`

internal/entities/laying_transfer_target.go

@@ -10,7 +10,8 @@ type LayingTransferTarget struct {
 	Id                          uint           `gorm:"primaryKey"`
 	LayingTransferId            uint           `gorm:"index;not null"`
 	TargetProjectFlockKandangId uint           `gorm:"not null"`
-	Qty                         float64        `gorm:"type:numeric(15,3);not null"`
+	TotalQty                    float64        `gorm:"type:numeric(15,3);default:0;not null"`        // FIFO STOCKABLE field
+	TotalUsed                   float64        `gorm:"type:numeric(15,3);default:0;not null"`        // FIFO STOCKABLE field
 	ProductWarehouseId          *uint          `gorm:""`
 	Note                        string         `gorm:"type:text"`
 	CreatedAt                   time.Time      `gorm:"autoCreateTime"`

internal/modules/production/project_flocks/repositories/project_flock_population_repository.go

@@ -96,9 +96,9 @@ func (r *projectFlockPopulationRepositoryImpl) GetTotalQtyByProjectFlockKandangI
 	var total float64
 	err := r.DB().WithContext(ctx).
 		Table("project_flock_populations").
-		Select("COALESCE(SUM(total_qty), 0) AS total_qty").
-		Joins("JOIN project_chickins ON project_chickins.id = project_flock_populations.project_chickin_id").
-		Where("project_chickins.project_flock_kandang_id = ?", projectFlockKandangID).
+		Select("COALESCE(SUM(total_qty - total_used_qty), 0) AS available_qty").
+		Joins("JOIN product_warehouses pw ON project_flock_populations.product_warehouse_id = pw.id").
+		Where("pw.project_flock_kandang_id = ?", projectFlockKandangID).
 		Scan(&total).Error
 	if err != nil {
 		return 0, err

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

@@ -84,7 +84,7 @@ func (u *TransferLayingController) CreateOne(c *fiber.Ctx) error {
 	req := new(validation.Create)
 
 	if err := c.BodyParser(req); err != nil {
-		return fiber.NewError(fiber.StatusBadRequest, "Invalid request body")
+		return fiber.NewError(fiber.StatusBadRequest, "Format permintaan tidak valid")
 	}
 
 	result, err := u.TransferLayingService.CreateOne(c, req)
@@ -96,7 +96,7 @@ func (u *TransferLayingController) CreateOne(c *fiber.Ctx) error {
 		JSON(response.Success{
 			Code:    fiber.StatusCreated,
 			Status:  "success",
-			Message: "Create transferLaying successfully",
+			Message: "Berhasil membuat transfer laying",
 			Data:    dto.ToTransferLayingListDTO(*result),
 		})
 }

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

@@ -67,8 +67,6 @@ type TransferLayingListDTO struct {
 	TransferLayingRelationDTO
 	FromProjectFlock *ProjectFlockSummaryDTO          `json:"from_project_flock,omitempty"`
 	ToProjectFlock   *ProjectFlockSummaryDTO          `json:"to_project_flock,omitempty"`
-	PendingUsageQty  *float64                         `json:"pending_usage_qty"`
-	UsageQty         *float64                         `json:"usage_qty"`
 	CreatedBy        uint                             `json:"created_by"`
 	CreatedUser      *userDTO.UserRelationDTO         `json:"created_user,omitempty"`
 	CreatedAt        time.Time                        `json:"created_at"`
@@ -166,7 +164,7 @@ func ToProductWarehouseSummaryDTO(pw *entity.ProductWarehouse) *ProductWarehouse
 func ToLayingTransferSourceDTO(source entity.LayingTransferSource) LayingTransferSourceDTO {
 	return LayingTransferSourceDTO{
 		SourceProjectFlockKandang: ToProjectFlockKandangSummaryDTO(source.SourceProjectFlockKandang),
-		Qty:                       source.Qty,
+		Qty:                       source.UsageQty, // Ambil dari UsageQty (FIFO consumed quantity)
 		ProductWarehouse:          ToProductWarehouseSummaryDTO(source.ProductWarehouse),
 		Note:                      source.Note,
 	}
@@ -186,7 +184,7 @@ func ToLayingTransferSourceDTOs(sources []entity.LayingTransferSource) []LayingT
 func ToLayingTransferTargetDTO(target entity.LayingTransferTarget) LayingTransferTargetDTO {
 	return LayingTransferTargetDTO{
 		TargetProjectFlockKandang: ToProjectFlockKandangSummaryDTO(target.TargetProjectFlockKandang),
-		Qty:                       target.Qty,
+		Qty:                       target.TotalQty, // Ambil dari TotalQty (FIFO replenished quantity)
 		ProductWarehouse:          ToProductWarehouseSummaryDTO(target.ProductWarehouse),
 		Note:                      target.Note,
 	}
@@ -223,8 +221,6 @@ func ToTransferLayingListDTO(e entity.LayingTransfer) TransferLayingListDTO {
 		TransferLayingRelationDTO: ToTransferLayingRelationDTO(e),
 		FromProjectFlock:          ToProjectFlockSummaryDTO(e.FromProjectFlock),
 		ToProjectFlock:            ToProjectFlockSummaryDTO(e.ToProjectFlock),
-		PendingUsageQty:           e.PendingUsageQty,
-		UsageQty:                  e.UsageQty,
 		CreatedBy:                 e.CreatedBy,
 		CreatedUser:               createdUser,
 		CreatedAt:                 e.CreatedAt,

internal/modules/production/transfer_layings/module.go

@@ -36,30 +36,13 @@ func (TransferLayingModule) RegisterRoutes(router fiber.Router, db *gorm.DB, val
 	stockAllocationRepo := commonRepo.NewStockAllocationRepository(db)
 	fifoService := commonSvc.NewFifoService(db, stockAllocationRepo, productWarehouseRepo, utils.Log)
 
-	
-	if err := fifoService.RegisterUsable(fifo.UsableConfig{
-		Key:   fifo.UsableKeyTransferToLaying,
-		Table: "laying_transfers",
-		Columns: fifo.UsableColumns{
-			ID:                 "id",
-			ProductWarehouseID: "product_warehouse_id",
-			UsageQuantity:      "usage_qty",
-			PendingQuantity:    "pending_usage_qty",
-			CreatedAt:          "created_at",
-		},
-	}); err != nil {
-		if !strings.Contains(strings.ToLower(err.Error()), "already registered") {
-			panic(fmt.Sprintf("failed to register transfer to laying usable workflow: %v", err))
-		}
-	}
-
-	
+	// daftarin jadi stockable
 	if err := fifoService.RegisterStockable(fifo.StockableConfig{
-		Key:   fifo.StockableKeyTransferToLaying,
-		Table: "laying_transfers",
+		Key:   fifo.StockableKeyTransferToLayingIn,
+		Table: "laying_transfer_targets",
 		Columns: fifo.StockableColumns{
 			ID:                 "id",
-			ProductWarehouseID: "dest_product_warehouse_id",
+			ProductWarehouseID: "product_warehouse_id",
 			TotalQuantity:      "total_qty",
 			TotalUsedQuantity:  "total_used",
 			CreatedAt:          "created_at",
@@ -71,6 +54,24 @@ func (TransferLayingModule) RegisterRoutes(router fiber.Router, db *gorm.DB, val
 		}
 	}
 
+	// daftarin jadi usable
+	if err := fifoService.RegisterUsable(fifo.UsableConfig{
+		Key:   fifo.UsableKeyTransferToLayingOut,
+		Table: "laying_transfer_sources",
+		Columns: fifo.UsableColumns{
+			ID:                 "id",
+			ProductWarehouseID: "product_warehouse_id",
+			UsageQuantity:      "usage_qty",
+			PendingQuantity:    "pending_usage_qty",
+			CreatedAt:          "created_at",
+		},
+		OrderBy: []string{"created_at ASC", "id ASC"},
+	}); err != nil {
+		if !strings.Contains(strings.ToLower(err.Error()), "already registered") {
+			panic(fmt.Sprintf("failed to register transfer to laying usable workflow: %v", err))
+		}
+	}
+
 	approvalRepo := commonRepo.NewApprovalRepository(db)
 	approvalService := commonSvc.NewApprovalService(approvalRepo)
 	if err := approvalService.RegisterWorkflowSteps(utils.ApprovalWorkflowTransferToLaying, utils.TransferToLayingApprovalSteps); err != nil {

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

@@ -16,6 +16,7 @@ import (
 	ProjectFlockRepository "gitlab.com/mbugroup/lti-api.git/internal/modules/production/project_flocks/repositories"
 	repository "gitlab.com/mbugroup/lti-api.git/internal/modules/production/transfer_layings/repositories"
 	validation "gitlab.com/mbugroup/lti-api.git/internal/modules/production/transfer_layings/validations"
+	rStockLogs "gitlab.com/mbugroup/lti-api.git/internal/modules/shared/repositories"
 	"gitlab.com/mbugroup/lti-api.git/internal/utils"
 	"gitlab.com/mbugroup/lti-api.git/internal/utils/fifo"
 
@@ -45,6 +46,7 @@ type transferLayingService struct {
 	ProjectFlockPopulationRepo ProjectFlockRepository.ProjectFlockPopulationRepository
 	ProductWarehouseRepo       rInventory.ProductWarehouseRepository
 	WarehouseRepo              rWarehouse.WarehouseRepository
+	StockLogRepo               rStockLogs.StockLogRepository
 	ApprovalService            commonSvc.ApprovalService
 	FifoSvc                    commonSvc.FifoService
 }
@@ -69,6 +71,7 @@ func NewTransferLayingService(
 		ProjectFlockPopulationRepo: projectFlockPopulationRepo,
 		ProductWarehouseRepo:       productWarehouseRepo,
 		WarehouseRepo:              warehouseRepo,
+		StockLogRepo:               rStockLogs.NewStockLogRepository(repo.DB()),
 		ApprovalService:            approvalService,
 		FifoSvc:                    fifoSvc,
 	}
@@ -164,55 +167,42 @@ func (s *transferLayingService) CreateOne(c *fiber.Ctx, req *validation.Create)
 		return nil, err
 	}
 
-	if _, err := s.ProjectFlockRepo.GetByID(c.Context(), req.SourceProjectFlockId, nil); err != nil {
-		if errors.Is(err, gorm.ErrRecordNotFound) {
-			return nil, fiber.NewError(fiber.StatusNotFound, "Source Project Flock not found")
-		}
-		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to validate source project flock")
-	}
-
-	if _, err := s.ProjectFlockRepo.GetByID(c.Context(), req.TargetProjectFlockId, nil); err != nil {
-		if errors.Is(err, gorm.ErrRecordNotFound) {
-			return nil, fiber.NewError(fiber.StatusNotFound, "Target Project Flock not found")
-		}
-		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to validate target project flock")
-	}
-
-	for _, detail := range req.SourceKandangs {
 	if err := commonSvc.EnsureRelations(c.Context(),
-			commonSvc.RelationCheck{Name: "Source Project Flock Kandang", ID: &detail.ProjectFlockKandangId, Exists: s.ProjectFlockKandangRepo.IdExists},
+		commonSvc.RelationCheck{Name: "Source Project Flock", ID: &req.SourceProjectFlockId, Exists: s.ProjectFlockRepo.IdExists},
+		commonSvc.RelationCheck{Name: "Target Project Flock", ID: &req.TargetProjectFlockId, Exists: s.ProjectFlockRepo.IdExists},
 	); err != nil {
 		return nil, err
 	}
 
-		pfk, err := s.ProjectFlockKandangRepo.GetByID(c.Context(), detail.ProjectFlockKandangId)
-		if err != nil {
-			return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to get source project flock kandang")
-		}
-		if pfk.ProjectFlockId != req.SourceProjectFlockId {
-			return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Source kandang %d does not belong to source project flock %d", detail.ProjectFlockKandangId, req.SourceProjectFlockId))
-		}
+	sourceKandangIDs := make([]uint, len(req.SourceKandangs))
+	for i, detail := range req.SourceKandangs {
+		sourceKandangIDs[i] = detail.ProjectFlockKandangId
 	}
 
-	for _, detail := range req.TargetKandangs {
-		if err := commonSvc.EnsureRelations(c.Context(),
-			commonSvc.RelationCheck{Name: "Target Project Flock Kandang", ID: &detail.ProjectFlockKandangId, Exists: s.ProjectFlockKandangRepo.IdExists},
+	if err := s.validateKandangOwnership(
+		c.Context(),
+		req.SourceProjectFlockId,
+		sourceKandangIDs,
 	); err != nil {
 		return nil, err
 	}
 
-		pfk, err := s.ProjectFlockKandangRepo.GetByID(c.Context(), detail.ProjectFlockKandangId)
-		if err != nil {
-			return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to get target project flock kandang")
-		}
-		if pfk.ProjectFlockId != req.TargetProjectFlockId {
-			return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Target kandang %d does not belong to target project flock %d", detail.ProjectFlockKandangId, req.TargetProjectFlockId))
+	targetKandangIDs := make([]uint, len(req.TargetKandangs))
+	for i, detail := range req.TargetKandangs {
+		targetKandangIDs[i] = detail.ProjectFlockKandangId
 	}
+
+	if err := s.validateKandangOwnership(
+		c.Context(),
+		req.TargetProjectFlockId,
+		targetKandangIDs,
+	); err != nil {
+		return nil, err
 	}
 
 	transferDate, err := utils.ParseDateString(req.TransferDate)
 	if err != nil {
-		return nil, fiber.NewError(fiber.StatusBadRequest, "Invalid transfer date format")
+		return nil, fiber.NewError(fiber.StatusBadRequest, "Format tanggal transfer tidak valid")
 	}
 
 	var totalSourceQty, totalTargetQty float64
@@ -220,7 +210,7 @@ func (s *transferLayingService) CreateOne(c *fiber.Ctx, req *validation.Create)
 
 	for _, sourceDetail := range req.SourceKandangs {
 		if sourceDetail.Quantity <= 0 {
-			return nil, fiber.NewError(fiber.StatusBadRequest, "Source kandang quantity must be greater than 0")
+			return nil, fiber.NewError(fiber.StatusBadRequest, "Jumlah kandang sumber harus lebih dari 0")
 		}
 		totalSourceQty += sourceDetail.Quantity
 
@@ -239,11 +229,11 @@ func (s *transferLayingService) CreateOne(c *fiber.Ctx, req *validation.Create)
 		}
 
 		if totalPopulation == 0 {
-			return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Source kandang %d has no population available for transfer", sourceDetail.ProjectFlockKandangId))
+			return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Kandang sumber %d tidak memiliki populasi untuk ditransfer", sourceDetail.ProjectFlockKandangId))
 		}
 
 		if totalPopulation < sourceDetail.Quantity {
-			return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Source kandang %d has insufficient quantity. Available: %.0f, Requested: %.0f", sourceDetail.ProjectFlockKandangId, totalPopulation, sourceDetail.Quantity))
+			return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Kandang sumber %d jumlah tidak mencukupi. Tersedia: %.0f, Diminta: %.0f", sourceDetail.ProjectFlockKandangId, totalPopulation, sourceDetail.Quantity))
 		}
 
 		sourceWarehouseMap[sourceDetail.ProjectFlockKandangId] = productWarehouseId
@@ -251,13 +241,13 @@ func (s *transferLayingService) CreateOne(c *fiber.Ctx, req *validation.Create)
 
 	for _, targetDetail := range req.TargetKandangs {
 		if targetDetail.Quantity <= 0 {
-			return nil, fiber.NewError(fiber.StatusBadRequest, "Target kandang quantity must be greater than 0")
+			return nil, fiber.NewError(fiber.StatusBadRequest, "Jumlah kandang tujuan harus lebih dari 0")
 		}
 		totalTargetQty += targetDetail.Quantity
 	}
 
 	if totalSourceQty != totalTargetQty {
-		return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Total source quantity (%f) must equal total target quantity (%f)", totalSourceQty, totalTargetQty))
+		return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Jumlah total sumber (%.0f) harus sama dengan jumlah total tujuan (%.0f)", totalSourceQty, totalTargetQty))
 	}
 
 	transferNumber := fmt.Sprintf("TL-%d", time.Now().UnixNano())
@@ -268,22 +258,14 @@ func (s *transferLayingService) CreateOne(c *fiber.Ctx, req *validation.Create)
 		FromProjectFlockId: req.SourceProjectFlockId,
 		ToProjectFlockId:   req.TargetProjectFlockId,
 		TransferDate:       transferDate,
-		PendingUsageQty:    &totalSourceQty,
 		CreatedBy:          actorID,
 	}
 
-	if len(sourceWarehouseMap) > 0 {
-		for _, pwID := range sourceWarehouseMap {
-			createBody.ProductWarehouseId = &pwID
-			break
-		}
-	}
-
 	err = s.Repository.DB().WithContext(c.Context()).Transaction(func(dbTransaction *gorm.DB) error {
 		repoTx := s.Repository.WithTx(dbTransaction)
 
 		if err := repoTx.CreateOne(c.Context(), createBody, nil); err != nil {
-			return fiber.NewError(fiber.StatusInternalServerError, "Failed to create transfer laying record")
+			return fiber.NewError(fiber.StatusInternalServerError, "Gagal membuat record transfer laying")
 		}
 
 		for _, sourceDetail := range req.SourceKandangs {
@@ -292,78 +274,91 @@ func (s *transferLayingService) CreateOne(c *fiber.Ctx, req *validation.Create)
 			source := entity.LayingTransferSource{
 				LayingTransferId:            createBody.Id,
 				SourceProjectFlockKandangId: sourceDetail.ProjectFlockKandangId,
-				Qty:                         sourceDetail.Quantity,
+				UsageQty:                    0,
+				PendingUsageQty:             0, // Di-set 0, biarkan FIFO Consume yang handle saat Approval
 				ProductWarehouseId:          &productWarehouseId,
 			}
 			if err := dbTransaction.Create(&source).Error; err != nil {
-				return fiber.NewError(fiber.StatusInternalServerError, "Failed to create transfer source")
+				return fiber.NewError(fiber.StatusInternalServerError, "Gagal membuat sumber transfer")
 			}
 
 		}
 
-		var firstTargetProductWarehouseID *uint
+		for _, targetDetail := range req.TargetKandangs {
 
-		for i, targetDetail := range req.TargetKandangs {
-
-			targetPFK, err := s.ProjectFlockKandangRepo.GetByID(c.Context(), targetDetail.ProjectFlockKandangId)
+			targetprojectFlockKandang, err := s.ProjectFlockKandangRepo.GetByID(c.Context(), targetDetail.ProjectFlockKandangId)
 			if err != nil {
-				return fiber.NewError(fiber.StatusInternalServerError, "Failed to get target project flock kandang")
+				return fiber.NewError(fiber.StatusInternalServerError, "Gagal mendapatkan project flock kandang tujuan")
 			}
 
-			targetWarehouse, err := s.WarehouseRepo.GetLatestByKandangID(c.Context(), targetPFK.KandangId)
+			targetWarehouse, err := s.WarehouseRepo.GetLatestByKandangID(c.Context(), targetprojectFlockKandang.KandangId)
 			if err != nil {
 				if errors.Is(err, gorm.ErrRecordNotFound) {
-					return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("No warehouse found for target kandang %d", targetDetail.ProjectFlockKandangId))
+					return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Warehouse tidak ditemukan untuk kandang tujuan %d", targetDetail.ProjectFlockKandangId))
 				}
-				return fiber.NewError(fiber.StatusInternalServerError, "Failed to get target warehouse")
+				return fiber.NewError(fiber.StatusInternalServerError, "Gagal mendapatkan warehouse tujuan")
 			}
 
+			// Ambil product ID dari salah satu source warehouse (harusnya semua sources product-nya sama)
+			var sourceProductID uint
+			for _, sourceDetail := range req.SourceKandangs {
+				if pwID, ok := sourceWarehouseMap[sourceDetail.ProjectFlockKandangId]; ok {
+					// Get product warehouse untuk ambil product ID
+					var sourcePW entity.ProductWarehouse
+					if err := dbTransaction.First(&sourcePW, pwID).Error; err == nil {
+						sourceProductID = sourcePW.ProductId
+						break
+					}
+				}
+			}
+
+			if sourceProductID == 0 {
+				return fiber.NewError(fiber.StatusInternalServerError, "Gagal mendapatkan product dari source warehouse")
+			}
+
+			// Cari product warehouse di target berdasarkan: warehouse + project_flock_kandang + PRODUCT
 			var targetPW entity.ProductWarehouse
-			err = dbTransaction.Where("warehouse_id = ? AND project_flock_kandang_id = ?", targetWarehouse.Id, targetDetail.ProjectFlockKandangId).
+			err = dbTransaction.Where("warehouse_id = ? AND project_flock_kandang_id = ? AND product_id = ?",
+				targetWarehouse.Id, targetDetail.ProjectFlockKandangId, sourceProductID).
 				First(&targetPW).Error
 			if err != nil {
 				if errors.Is(err, gorm.ErrRecordNotFound) {
-					return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("No product warehouse found for target kandang %d in warehouse %d", targetDetail.ProjectFlockKandangId, targetWarehouse.Id))
+					// Create baru dengan product yang sama dengan source
+					targetPW = entity.ProductWarehouse{
+						ProductId:             sourceProductID,
+						WarehouseId:           targetWarehouse.Id,
+						ProjectFlockKandangId: &targetDetail.ProjectFlockKandangId,
+						Quantity:              0,
+					}
+					if err := dbTransaction.Create(&targetPW).Error; err != nil {
+						return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Gagal membuat product warehouse untuk kandang tujuan %d: %v", targetDetail.ProjectFlockKandangId, err))
+					}
+				} else {
+					return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Gagal mendapatkan product warehouse untuk kandang tujuan %d: %v", targetDetail.ProjectFlockKandangId, err))
 				}
-				return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Failed to get product warehouse for target kandang %d: %v", targetDetail.ProjectFlockKandangId, err))
 			}
 
 			target := entity.LayingTransferTarget{
 				LayingTransferId:            createBody.Id,
 				TargetProjectFlockKandangId: targetDetail.ProjectFlockKandangId,
-				Qty:                         targetDetail.Quantity,
+				TotalQty:                    targetDetail.Quantity,
+				TotalUsed:                   0,
 				ProductWarehouseId:          &targetPW.Id,
 			}
 			if err := dbTransaction.Create(&target).Error; err != nil {
-				return fiber.NewError(fiber.StatusInternalServerError, "Failed to create transfer target")
-			}
-
-			if i == 0 {
-				firstTargetProductWarehouseID = &targetPW.Id
-			}
-		}
-
-		// Set DestProductWarehouseID untuk STOCKABLE role (ambil dari target pertama)
-		if firstTargetProductWarehouseID != nil {
-			createBody.DestProductWarehouseID = firstTargetProductWarehouseID
-
-			// Update DestProductWarehouseID ke database
-			if err := dbTransaction.Model(&entity.LayingTransfer{}).
-				Where("id = ?", createBody.Id).
-				Update("dest_product_warehouse_id", *firstTargetProductWarehouseID).Error; err != nil {
-				return fiber.NewError(fiber.StatusInternalServerError, "Failed to update DestProductWarehouseID")
+				return fiber.NewError(fiber.StatusInternalServerError, "Gagal membuat target transfer")
 			}
 		}
 
 		if err := createApprovalTransferLaying(c.Context(), dbTransaction, createBody.Id, createBody.CreatedBy); err != nil {
-			return fiber.NewError(fiber.StatusInternalServerError, "Failed to create transfer approval")
+			return fiber.NewError(fiber.StatusInternalServerError, "Gagal membuat approval transfer")
 		}
 
 		return nil
 	})
 
 	if err != nil {
-		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to create transfer laying")
+		return nil, fiber.NewError(fiber.StatusInternalServerError, "Gagal membuat transfer laying")
 	}
 
 	return s.GetOne(c, createBody.Id)
@@ -412,24 +407,8 @@ func (s *transferLayingService) UpdateOne(c *fiber.Ctx, req *validation.Update,
 
 	err = s.Repository.DB().WithContext(c.Context()).Transaction(func(dbTransaction *gorm.DB) error {
 		repoTx := s.Repository.WithTx(dbTransaction)
-		projectFlockPopulationRepoTx := s.ProjectFlockPopulationRepo.WithTx(dbTransaction)
-		productWarehouseRepoTx := s.ProductWarehouseRepo.WithTx(dbTransaction)
-
-		for _, oldSource := range existingTransfer.Sources {
-			if oldSource.ProductWarehouseId != nil && oldSource.Qty > 0 {
-
-				if err := productWarehouseRepoTx.PatchOne(c.Context(), *oldSource.ProductWarehouseId, map[string]any{
-					"qty": gorm.Expr("qty + ?", oldSource.Qty),
-				}, nil); err != nil {
-					return fiber.NewError(fiber.StatusInternalServerError, "Failed to restore warehouse quantity")
-				}
-
-				if err := s.restoreProjectFlockPopulation(c.Context(), projectFlockPopulationRepoTx, oldSource.SourceProjectFlockKandangId, oldSource.Qty); err != nil {
-					return err
-				}
-			}
-		}
 
+		// Hapus old sources dan targets
 		for _, oldSource := range existingTransfer.Sources {
 			if err := dbTransaction.Delete(&oldSource).Error; err != nil {
 				return fiber.NewError(fiber.StatusInternalServerError, "Failed to delete old source")
@@ -442,23 +421,16 @@ func (s *transferLayingService) UpdateOne(c *fiber.Ctx, req *validation.Update,
 			}
 		}
 
-		totalSourceQty := 0.0
-		for _, source := range req.SourceKandangs {
-			totalSourceQty += source.Quantity
-		}
-
 		if err := repoTx.PatchOne(c.Context(), id, map[string]any{
 			"transfer_date": transferDate,
 			"notes":         req.Reason,
-			"pending_usage_qty": &totalSourceQty,
 		}, nil); err != nil {
 			return fiber.NewError(fiber.StatusInternalServerError, "Failed to update transfer header")
 		}
 
-		sourceWarehouseMap := make(map[uint]uint)
+		// Create new sources dengan pending quantity
 		for _, sourceDetail := range req.SourceKandangs {
-
-			populations, err := projectFlockPopulationRepoTx.GetByProjectFlockKandangID(c.Context(), sourceDetail.ProjectFlockKandangId)
+			populations, err := s.ProjectFlockPopulationRepo.GetByProjectFlockKandangID(c.Context(), sourceDetail.ProjectFlockKandangId)
 			if err != nil {
 				return fiber.NewError(fiber.StatusInternalServerError, "Failed to get populations")
 			}
@@ -467,48 +439,37 @@ func (s *transferLayingService) UpdateOne(c *fiber.Ctx, req *validation.Update,
 				return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Source kandang %d has no population available", sourceDetail.ProjectFlockKandangId))
 			}
 
-			var totalPopulation float64
 			var productWarehouseId uint
-
 			for _, pop := range populations {
-				totalPopulation += pop.TotalQty
 				if pop.ProductWarehouseId > 0 {
 					productWarehouseId = pop.ProductWarehouseId
+					break
 				}
 			}
 
-			if totalPopulation < sourceDetail.Quantity {
-				return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Source kandang %d has insufficient quantity. Available: %.0f, Requested: %.0f", sourceDetail.ProjectFlockKandangId, totalPopulation, sourceDetail.Quantity))
+			if productWarehouseId == 0 {
+				return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Source kandang %d has no product warehouse", sourceDetail.ProjectFlockKandangId))
 			}
 
-			sourceWarehouseMap[sourceDetail.ProjectFlockKandangId] = productWarehouseId
-
 			source := entity.LayingTransferSource{
 				LayingTransferId:            id,
 				SourceProjectFlockKandangId: sourceDetail.ProjectFlockKandangId,
-				Qty:                         sourceDetail.Quantity,
+				UsageQty:                    0,
+				PendingUsageQty:             sourceDetail.Quantity,
 				ProductWarehouseId:          &productWarehouseId,
 			}
 			if err := dbTransaction.Create(&source).Error; err != nil {
 				return fiber.NewError(fiber.StatusInternalServerError, "Failed to create transfer source")
 			}
-
-			if err := s.reduceProjectFlockPopulation(c.Context(), projectFlockPopulationRepoTx, sourceDetail.ProjectFlockKandangId, sourceDetail.Quantity); err != nil {
-				return err
-			}
-
-			if err := productWarehouseRepoTx.PatchOne(c.Context(), productWarehouseId, map[string]any{"qty": gorm.Expr("qty - ?", sourceDetail.Quantity)}, nil); err != nil {
-				return fiber.NewError(fiber.StatusInternalServerError, "Failed to update source warehouse quantity")
-			}
 		}
 
 		for _, targetDetail := range req.TargetKandangs {
-			targetPFK, err := s.ProjectFlockKandangRepo.GetByID(c.Context(), targetDetail.ProjectFlockKandangId)
+			targetprojectFlockKandang, err := s.ProjectFlockKandangRepo.GetByID(c.Context(), targetDetail.ProjectFlockKandangId)
 			if err != nil {
 				return fiber.NewError(fiber.StatusInternalServerError, "Failed to get target project flock kandang")
 			}
 
-			targetWarehouse, err := s.WarehouseRepo.GetLatestByKandangID(c.Context(), targetPFK.KandangId)
+			targetWarehouse, err := s.WarehouseRepo.GetLatestByKandangID(c.Context(), targetprojectFlockKandang.KandangId)
 			if err != nil {
 				if errors.Is(err, gorm.ErrRecordNotFound) {
 					return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("No warehouse found for target kandang %d", targetDetail.ProjectFlockKandangId))
@@ -516,20 +477,50 @@ func (s *transferLayingService) UpdateOne(c *fiber.Ctx, req *validation.Update,
 				return fiber.NewError(fiber.StatusInternalServerError, "Failed to get target warehouse")
 			}
 
+			// Ambil product ID dari source yang pertama (semua sources seharusnya product-nya sama)
+			var sourceProductID uint
+			if len(req.SourceKandangs) > 0 {
+				firstSourceKandangID := req.SourceKandangs[0].ProjectFlockKandangId
+				populations, err := s.ProjectFlockPopulationRepo.GetByProjectFlockKandangID(c.Context(), firstSourceKandangID)
+				if err == nil && len(populations) > 0 && populations[0].ProductWarehouseId > 0 {
+					var sourcePW entity.ProductWarehouse
+					if err := dbTransaction.First(&sourcePW, populations[0].ProductWarehouseId).Error; err == nil {
+						sourceProductID = sourcePW.ProductId
+					}
+				}
+			}
+
+			if sourceProductID == 0 {
+				return fiber.NewError(fiber.StatusInternalServerError, "Failed to get product from source warehouse")
+			}
+
+			// Cari product warehouse di target berdasarkan: warehouse + project_flock_kandang + PRODUCT
 			var targetPW entity.ProductWarehouse
-			err = dbTransaction.Where("warehouse_id = ? AND project_flock_kandang_id = ?", targetWarehouse.Id, targetDetail.ProjectFlockKandangId).
+			err = dbTransaction.Where("warehouse_id = ? AND project_flock_kandang_id = ? AND product_id = ?",
+				targetWarehouse.Id, targetDetail.ProjectFlockKandangId, sourceProductID).
 				First(&targetPW).Error
 			if err != nil {
 				if errors.Is(err, gorm.ErrRecordNotFound) {
-					return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("No product warehouse found for target kandang %d in warehouse %d", targetDetail.ProjectFlockKandangId, targetWarehouse.Id))
+					// Create baru dengan product yang sama dengan source
+					targetPW = entity.ProductWarehouse{
+						ProductId:             sourceProductID,
+						WarehouseId:           targetWarehouse.Id,
+						ProjectFlockKandangId: &targetDetail.ProjectFlockKandangId,
+						Quantity:              0,
 					}
+					if err := dbTransaction.Create(&targetPW).Error; err != nil {
+						return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Failed to create product warehouse for target kandang %d: %v", targetDetail.ProjectFlockKandangId, err))
+					}
+				} else {
 					return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Failed to get product warehouse for target kandang %d: %v", targetDetail.ProjectFlockKandangId, err))
 				}
+			}
 
 			target := entity.LayingTransferTarget{
 				LayingTransferId:            id,
 				TargetProjectFlockKandangId: targetDetail.ProjectFlockKandangId,
-				Qty:                         targetDetail.Quantity,
+				TotalQty:                    targetDetail.Quantity,
+				TotalUsed:                   0,
 				ProductWarehouseId:          &targetPW.Id,
 			}
 			if err := dbTransaction.Create(&target).Error; err != nil {
@@ -573,49 +564,9 @@ func (s transferLayingService) DeleteOne(c *fiber.Ctx, id uint) error {
 	}
 	err = s.Repository.DB().WithContext(c.Context()).Transaction(func(dbTransaction *gorm.DB) error {
 		repoTx := s.Repository.WithTx(dbTransaction)
-		productWarehouseRepoTx := s.ProductWarehouseRepo.WithTx(dbTransaction)
-		projectFlockPopulationRepoTx := s.ProjectFlockPopulationRepo.WithTx(dbTransaction)
-
-		sourceRepoTx := repository.NewLayingTransferSourceRepository(dbTransaction)
-		sources, err := sourceRepoTx.GetByLayingTransferId(c.Context(), id)
-		if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
-			return fiber.NewError(fiber.StatusInternalServerError, "Failed to get transfer sources")
-		}
-
-		for _, source := range sources {
-			if source.ProductWarehouseId != nil && source.Qty > 0 {
-
-				if err := productWarehouseRepoTx.PatchOne(c.Context(), *source.ProductWarehouseId, map[string]any{
-					"qty": gorm.Expr("qty + ?", source.Qty),
-				}, nil); err != nil {
-					return fiber.NewError(fiber.StatusInternalServerError, "Failed to restore source warehouse quantity")
-				}
-			}
-		}
-
-		for _, source := range sources {
-			populations, err := projectFlockPopulationRepoTx.GetByProjectFlockKandangID(c.Context(), source.SourceProjectFlockKandangId)
-			if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
-				return fiber.NewError(fiber.StatusInternalServerError, "Failed to get populations for restoration")
-			}
-
-			remainingToRestore := source.Qty
-			for i := len(populations) - 1; i >= 0 && remainingToRestore > 0; i-- {
-				pop := populations[i]
-				restoreAmount := remainingToRestore
-				if pop.TotalQty < remainingToRestore {
-					restoreAmount = pop.TotalQty
-				}
-
-				newQty := pop.TotalQty + restoreAmount
-				if err := projectFlockPopulationRepoTx.PatchOne(c.Context(), pop.Id, map[string]any{"total_qty": newQty}, nil); err != nil {
-					return fiber.NewError(fiber.StatusInternalServerError, "Failed to restore population quantity")
-				}
-
-				remainingToRestore -= restoreAmount
-			}
-		}
 
+		// Delete transfer - cascade akan menghapus sources dan targets
+		// FIFO akan menangani stock allocation cleanup via foreign key constraints
 		if err := repoTx.DeleteOne(c.Context(), id); err != nil {
 			return fiber.NewError(fiber.StatusInternalServerError, "Failed to delete transfer laying")
 		}
@@ -667,7 +618,6 @@ func (s transferLayingService) Approval(c *fiber.Ctx, req *validation.Approve) (
 	err = s.Repository.DB().WithContext(c.Context()).Transaction(func(dbTransaction *gorm.DB) error {
 		repoTx := s.Repository.WithTx(dbTransaction)
 		approvalSvcTx := commonSvc.NewApprovalService(commonRepo.NewApprovalRepository(dbTransaction))
-		sourceRepoTx := repository.NewLayingTransferSourceRepository(dbTransaction)
 		targetRepoTx := repository.NewLayingTransferTargetRepository(dbTransaction)
 
 		for _, approvableID := range approvableIDs {
@@ -691,72 +641,79 @@ func (s transferLayingService) Approval(c *fiber.Ctx, req *validation.Approve) (
 				return fiber.NewError(fiber.StatusInternalServerError, "Failed to record approval")
 			}
 
-			if action == entity.ApprovalActionApproved && transfer.PendingUsageQty != nil && *transfer.PendingUsageQty > 0 {
+			if action == entity.ApprovalActionApproved {
 
-				sources, err := sourceRepoTx.GetByLayingTransferId(c.Context(), approvableID)
+				sources, err := repository.NewLayingTransferSourceRepository(dbTransaction).GetByLayingTransferId(c.Context(), approvableID)
 				if err != nil {
-					return fiber.NewError(fiber.StatusInternalServerError, "Failed to get transfer sources")
+					return fiber.NewError(fiber.StatusInternalServerError, "Gagal mengambil sources transfer")
 				}
 
 				targets, err := targetRepoTx.GetByLayingTransferId(c.Context(), approvableID)
 				if err != nil {
-					return fiber.NewError(fiber.StatusInternalServerError, "Failed to get transfer targets")
+					return fiber.NewError(fiber.StatusInternalServerError, "Gagal mengambil targets transfer")
 				}
 
-				if len(sources) > 0 && len(targets) > 0 {
+				// Hitung total quantity dari targets untuk di-consume dari sources
+				totalTargetQty := 0.0
+				for _, target := range targets {
+					totalTargetQty += target.TotalQty
+				}
 
+				// Consume dari laying_transfer_sources (Usable) - akan consume dari ProjectFlockPopulation (Stockable)
 				for _, source := range sources {
 					if source.ProductWarehouseId == nil {
-							return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Source product warehouse not found for transfer %d", approvableID))
+						return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Source product warehouse tidak ditemukan untuk transfer %d", approvableID))
 					}
 
-						_, err := s.FifoSvc.Consume(c.Context(), commonSvc.StockConsumeRequest{
-							UsableKey:          fifo.UsableKeyTransferToLaying,
-							UsableID:           approvableID,
+					consumeResult, err := s.FifoSvc.Consume(c.Context(), commonSvc.StockConsumeRequest{
+						UsableKey:          fifo.UsableKeyTransferToLayingOut,
+						UsableID:           source.Id,
 						ProductWarehouseID: *source.ProductWarehouseId,
-							Quantity:           source.Qty,
+						Quantity:           totalTargetQty,
 						AllowPending:       false,
 						Tx:                 dbTransaction,
 					})
 					if err != nil {
-							return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Failed to consume FIFO stock for source %d: %v", source.ProductWarehouseId, err))
+						return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Gagal consume FIFO stock: %v", err))
+					}
+
+					// Update source usage tracking
+					if err := dbTransaction.Model(&entity.LayingTransferSource{}).
+						Where("id = ?", source.Id).
+						Updates(map[string]interface{}{
+							"usage_qty":         source.UsageQty + consumeResult.UsageQuantity,
+							"pending_usage_qty": consumeResult.PendingQuantity,
+						}).Error; err != nil {
+						return fiber.NewError(fiber.StatusInternalServerError, "Gagal update source usage qty")
 					}
 				}
 
-					if transfer.DestProductWarehouseID != nil {
-						note := fmt.Sprintf("Transfer to Laying #%s", transfer.TransferNumber)
+				// Replenish ke target warehouse
+				for _, target := range targets {
+					if target.ProductWarehouseId == nil {
+						return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Target product warehouse tidak ditemukan untuk transfer %d", approvableID))
+					}
+
+					note := fmt.Sprintf("Transfer to Laying #%s - Target Kandang", transfer.TransferNumber)
 					replenishResult, err := s.FifoSvc.Replenish(c.Context(), commonSvc.StockReplenishRequest{
-							StockableKey:       fifo.StockableKeyTransferToLaying,
-							StockableID:        approvableID,
-							ProductWarehouseID: *transfer.DestProductWarehouseID,
-							Quantity:           *transfer.PendingUsageQty,
+						StockableKey:       fifo.StockableKeyTransferToLayingIn,
+						StockableID:        target.Id,
+						ProductWarehouseID: *target.ProductWarehouseId,
+						Quantity:           target.TotalQty,
 						Note:               &note,
 						Tx:                 dbTransaction,
 					})
 					if err != nil {
-							return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Failed to replenish stock to destination warehouse: %v", err))
+						return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Gagal replenish stock ke target warehouse: %v", err))
 					}
 
-						if err := dbTransaction.Model(&entity.LayingTransfer{}).
-							Where("id = ?", approvableID).
-							Updates(map[string]interface{}{
-								"total_qty": replenishResult.AddedQuantity,
-							}).Error; err != nil {
-							return fiber.NewError(fiber.StatusInternalServerError, "Failed to update total quantity for transfer")
+					if err := dbTransaction.Model(&entity.LayingTransferTarget{}).
+						Where("id = ?", target.Id).
+						Update("total_qty", replenishResult.AddedQuantity).Error; err != nil {
+						return fiber.NewError(fiber.StatusInternalServerError, "Gagal update target total qty")
 					}
 				}
 			}
-
-				usageQty := *transfer.PendingUsageQty
-				updateData := map[string]any{
-					"usage_qty":         usageQty,
-					"total_qty":         usageQty, // Same as usage_qty for initial transfer
-					"pending_usage_qty": nil,
-				}
-				if err := repoTx.PatchOne(c.Context(), approvableID, updateData, nil); err != nil {
-					return fiber.NewError(fiber.StatusInternalServerError, "Failed to update transfer laying status")
-				}
-			}
 		}
 
 		return nil
@@ -832,66 +789,6 @@ func (s *transferLayingService) getOrCreateProductWarehouse(ctx context.Context,
 	return newWarehouse, nil
 }
 
-func (s *transferLayingService) reduceProjectFlockPopulation(ctx context.Context, populationRepo ProjectFlockRepository.ProjectFlockPopulationRepository, projectFlockKandangID uint, quantityToReduce float64) error {
-
-	populations, err := populationRepo.GetByProjectFlockKandangID(ctx, projectFlockKandangID)
-	if err != nil {
-		return err
-	}
-
-	if len(populations) == 0 {
-		return fiber.NewError(fiber.StatusBadRequest, "No populations found for reduction")
-	}
-
-	remainingToReduce := quantityToReduce
-
-	for i := len(populations) - 1; i >= 0; i-- {
-		if remainingToReduce <= 0 {
-			break
-		}
-
-		pop := populations[i]
-		reductionAmount := remainingToReduce
-		if pop.TotalQty < remainingToReduce {
-			reductionAmount = pop.TotalQty
-		}
-
-		newQty := pop.TotalQty - reductionAmount
-		if err := populationRepo.PatchOne(ctx, pop.Id, map[string]any{"total_qty": newQty}, nil); err != nil {
-			return err
-		}
-
-		remainingToReduce -= reductionAmount
-	}
-
-	if remainingToReduce > 0 {
-		return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Insufficient population to reduce. Still need to reduce: %.0f", remainingToReduce))
-	}
-
-	return nil
-}
-
-func (s *transferLayingService) restoreProjectFlockPopulation(ctx context.Context, populationRepo ProjectFlockRepository.ProjectFlockPopulationRepository, projectFlockKandangID uint, quantityToRestore float64) error {
-	populations, err := populationRepo.GetByProjectFlockKandangID(ctx, projectFlockKandangID)
-	if err != nil {
-		return err
-	}
-
-	if len(populations) == 0 {
-		return fiber.NewError(fiber.StatusBadRequest, "No populations found for restoration")
-	}
-
-	if len(populations) > 0 {
-		lastPop := populations[len(populations)-1]
-		newQty := lastPop.TotalQty + quantityToRestore
-		if err := populationRepo.PatchOne(ctx, lastPop.Id, map[string]any{"total_qty": newQty}, nil); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
 func (s transferLayingService) GetAvailableQtyPerKandang(ctx *fiber.Ctx, projectFlockID uint) (*entity.ProjectFlock, map[uint]float64, error) {
 
 	pf, err := s.ProjectFlockRepo.GetByID(ctx.Context(), projectFlockID, func(db *gorm.DB) *gorm.DB {
@@ -925,3 +822,27 @@ func (s transferLayingService) GetAvailableQtyPerKandang(ctx *fiber.Ctx, project
 
 	return pf, kandangAvailableQty, nil
 }
+
+func (s *transferLayingService) validateKandangOwnership(
+	ctx context.Context,
+	projectFlockID uint,
+	kandangIDs []uint,
+) error {
+
+	for _, kandangID := range kandangIDs {
+		// validasi terlebih dahulu apakah kandangnya itu ada atau gak
+		projectFlockKandang, err := s.ProjectFlockKandangRepo.GetByID(ctx, kandangID)
+		if err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return fiber.NewError(fiber.StatusNotFound, fmt.Sprintf("Kandang %d tidak ditemukan", kandangID))
+			}
+			return fiber.NewError(fiber.StatusInternalServerError, "Failed to get project flock kandang")
+		}
+
+		if projectFlockKandang.ProjectFlockId != projectFlockID {
+			return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Kandang %d tidak terhubung ke project flock %d", kandangID, projectFlockID))
+		}
+	}
+
+	return nil
+}

internal/utils/fifo/constants.go

@@ -5,12 +5,12 @@ const (
 	UsableKeyRecordingStock       UsableKey = "RECORDING_STOCK"
 	UsableKeyProjectChickin       UsableKey = "PROJECT_CHICKIN"
 	UsableKeyMarketingDelivery    UsableKey = "MARKETING_DELIVERY"
-	UsableKeyTransferToLaying    UsableKey = "TRANSFER_TO_LAYING"
+	UsableKeyTransferToLayingOut  UsableKey = "TRANSFERTOLAYING_OUT"
 	UsableKeyStockTransferOut     UsableKey = "STOCK_TRANSFER_OUT"
 	UsableKeyAdjustmentOut        UsableKey = "ADJUSTMENT_OUT"
 
 	// Stockable Keys
-	StockableKeyTransferToLaying       StockableKey = "TRANSFER_TO_LAYING"
+	StockableKeyTransferToLayingIn  StockableKey = "TRANSFERTOLAYING_IN"
 	StockableKeyStockTransferIn     StockableKey = "STOCK_TRANSFER_IN"
 	StockableKeyAdjustmentIn        StockableKey = "ADJUSTMENT_IN"
 	StockableKeyPurchaseItems       StockableKey = "PURCHASE_ITEMS"