productstock

internal/modules/inventory/adjustments/module.go

@@ -5,6 +5,9 @@ import (
 	"github.com/gofiber/fiber/v2"
 	"gorm.io/gorm"
 
+	commonRepo "gitlab.com/mbugroup/lti-api.git/internal/common/repository"
+	commonSvc "gitlab.com/mbugroup/lti-api.git/internal/common/service"
+	rAdjustmentStock "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/adjustments/repositories"
 	sAdjustment "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/adjustments/services"
 	rProductWarehouse "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/product-warehouses/repositories"
 	rproduct "gitlab.com/mbugroup/lti-api.git/internal/modules/master/products/repositories"
@@ -13,19 +16,67 @@ import (
 	rStockLogs "gitlab.com/mbugroup/lti-api.git/internal/modules/shared/repositories"
 	rUser "gitlab.com/mbugroup/lti-api.git/internal/modules/users/repositories"
 	sUser "gitlab.com/mbugroup/lti-api.git/internal/modules/users/services"
+	"gitlab.com/mbugroup/lti-api.git/internal/utils"
+	"gitlab.com/mbugroup/lti-api.git/internal/utils/fifo"
 )
 
 type AdjustmentModule struct{}
 
 func (AdjustmentModule) RegisterRoutes(router fiber.Router, db *gorm.DB, validate *validator.Validate) {
+	// Repositories
 	stockLogsRepo := rStockLogs.NewStockLogRepository(db)
 	warehouseRepo := rWarehouse.NewWarehouseRepository(db)
 	productWarehouseRepo := rProductWarehouse.NewProductWarehouseRepository(db)
 	projectFlockKandangRepo := rProjectFlockKandang.NewProjectFlockKandangRepository(db)
 	userRepo := rUser.NewUserRepository(db)
 	productRepo := rproduct.NewProductRepository(db)
+	adjustmentStockRepo := rAdjustmentStock.NewAdjustmentStockRepository(db)
+	stockAllocRepo := commonRepo.NewStockAllocationRepository(db)
 
-	adjustmentService := sAdjustment.NewAdjustmentService(productRepo, stockLogsRepo, warehouseRepo, productWarehouseRepo, validate, projectFlockKandangRepo)
+	fifoService := commonSvc.NewFifoService(db, stockAllocRepo, productWarehouseRepo, utils.Log)
+
+	err := fifoService.RegisterStockable(fifo.StockableConfig{
+		Key:   fifo.StockableKey("ADJUSTMENT_IN"),
+		Table: "adjustment_stocks",
+		Columns: fifo.StockableColumns{
+			ID:                 "id",
+			ProductWarehouseID: "product_warehouse_id",
+			TotalQuantity:      "total_qty",
+			TotalUsedQuantity:  "total_used",
+			CreatedAt:          "created_at",
+		},
+		OrderBy: []string{"created_at ASC", "id ASC"},
+	})
+	if err != nil {
+		panic("Failed to register ADJUSTMENT_IN as Stockable: " + err.Error())
+	}
+
+	err = fifoService.RegisterUsable(fifo.UsableConfig{
+		Key:   fifo.UsableKey("ADJUSTMENT_OUT"),
+		Table: "adjustment_stocks",
+		Columns: fifo.UsableColumns{
+			ID:                 "id",
+			ProductWarehouseID: "product_warehouse_id",
+			UsageQuantity:      "usage_qty",
+			PendingQuantity:    "pending_qty",
+			CreatedAt:          "created_at",
+		},
+		OrderBy: []string{"created_at ASC", "id ASC"},
+	})
+	if err != nil {
+		panic("Failed to register ADJUSTMENT_OUT as Usable: " + err.Error())
+	}
+
+	adjustmentService := sAdjustment.NewAdjustmentService(
+		productRepo,
+		stockLogsRepo,
+		warehouseRepo,
+		productWarehouseRepo,
+		adjustmentStockRepo,
+		fifoService,
+		validate,
+		projectFlockKandangRepo,
+	)
 	userService := sUser.NewUserService(userRepo, validate)
 
 	AdjustmentRoutes(router, userService, adjustmentService)

internal/modules/inventory/adjustments/repositories/adjustment_stock.repository.go

@@ -0,0 +1,50 @@
+package repositories
+
+import (
+	"context"
+
+	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	"gorm.io/gorm"
+)
+
+type AdjustmentStockRepository interface {
+	CreateOne(ctx context.Context, data *entity.AdjustmentStock, modifier func(*gorm.DB) *gorm.DB) error
+	GetByStockLogID(ctx context.Context, stockLogID uint) (*entity.AdjustmentStock, error)
+	WithTx(tx *gorm.DB) AdjustmentStockRepository
+	DB() *gorm.DB
+}
+
+type adjustmentStockRepositoryImpl struct {
+	db *gorm.DB
+}
+
+func NewAdjustmentStockRepository(db *gorm.DB) AdjustmentStockRepository {
+	return &adjustmentStockRepositoryImpl{db: db}
+}
+
+func (r *adjustmentStockRepositoryImpl) CreateOne(ctx context.Context, data *entity.AdjustmentStock, modifier func(*gorm.DB) *gorm.DB) error {
+	q := r.db.WithContext(ctx)
+	if modifier != nil {
+		q = modifier(q)
+	}
+	return q.Create(data).Error
+}
+
+func (r *adjustmentStockRepositoryImpl) GetByStockLogID(ctx context.Context, stockLogID uint) (*entity.AdjustmentStock, error) {
+	var record entity.AdjustmentStock
+	err := r.db.WithContext(ctx).
+		Where("stock_log_id = ?", stockLogID).
+		First(&record).Error
+	if err != nil {
+		return nil, err
+	}
+	return &record, nil
+}
+
+func (r *adjustmentStockRepositoryImpl) WithTx(tx *gorm.DB) AdjustmentStockRepository {
+	return &adjustmentStockRepositoryImpl{db: tx}
+}
+
+func (r *adjustmentStockRepositoryImpl) DB() *gorm.DB {
+	return r.db
+}

internal/modules/inventory/adjustments/services/adjustment.service.go

@@ -12,6 +12,7 @@ import (
 	common "gitlab.com/mbugroup/lti-api.git/internal/common/service"
 	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
 	m "gitlab.com/mbugroup/lti-api.git/internal/middleware"
+	adjustmentStockRepo "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/adjustments/repositories"
 	validation "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/adjustments/validations"
 	ProductWarehouse "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/product-warehouses/repositories"
 	productRepo "gitlab.com/mbugroup/lti-api.git/internal/modules/master/products/repositories"
@@ -29,24 +30,37 @@ type AdjustmentService interface {
 }
 
 type adjustmentService struct {
-	Log                     *logrus.Logger
-	Validate                *validator.Validate
-	StockLogsRepository     stockLogsRepo.StockLogRepository
-	WarehouseRepo           warehouseRepo.WarehouseRepository
-	ProductWarehouseRepo    ProductWarehouse.ProductWarehouseRepository
-	ProductRepo             productRepo.ProductRepository
-	ProjectFlockKandangRepo projectFlockKandangRepo.ProjectFlockKandangRepository
+	Log                       *logrus.Logger
+	Validate                  *validator.Validate
+	StockLogsRepository       stockLogsRepo.StockLogRepository
+	WarehouseRepo             warehouseRepo.WarehouseRepository
+	ProductWarehouseRepo      ProductWarehouse.ProductWarehouseRepository
+	ProductRepo               productRepo.ProductRepository
+	ProjectFlockKandangRepo   projectFlockKandangRepo.ProjectFlockKandangRepository
+	AdjustmentStockRepository adjustmentStockRepo.AdjustmentStockRepository
+	FifoSvc                   common.FifoService
 }
 
-func NewAdjustmentService(productRepo productRepo.ProductRepository, stockLogsRepo stockLogsRepo.StockLogRepository, warehouseRepo warehouseRepo.WarehouseRepository, productWarehouseRepo ProductWarehouse.ProductWarehouseRepository, validate *validator.Validate, projectFlockKandangRepo projectFlockKandangRepo.ProjectFlockKandangRepository) AdjustmentService {
+func NewAdjustmentService(
+	productRepo productRepo.ProductRepository,
+	stockLogsRepo stockLogsRepo.StockLogRepository,
+	warehouseRepo warehouseRepo.WarehouseRepository,
+	productWarehouseRepo ProductWarehouse.ProductWarehouseRepository,
+	adjustmentStockRepo adjustmentStockRepo.AdjustmentStockRepository,
+	fifoSvc common.FifoService,
+	validate *validator.Validate,
+	projectFlockKandangRepo projectFlockKandangRepo.ProjectFlockKandangRepository,
+) AdjustmentService {
 	return &adjustmentService{
-		Log:                     utils.Log,
-		Validate:                validate,
-		StockLogsRepository:     stockLogsRepo,
-		WarehouseRepo:           warehouseRepo,
-		ProductWarehouseRepo:    productWarehouseRepo,
-		ProductRepo:             productRepo,
-		ProjectFlockKandangRepo: projectFlockKandangRepo,
+		Log:                       utils.Log,
+		Validate:                  validate,
+		StockLogsRepository:       stockLogsRepo,
+		WarehouseRepo:             warehouseRepo,
+		ProductWarehouseRepo:      productWarehouseRepo,
+		ProductRepo:               productRepo,
+		ProjectFlockKandangRepo:   projectFlockKandangRepo,
+		AdjustmentStockRepository: adjustmentStockRepo,
+		FifoSvc:                   fifoSvc,
 	}
 }
 
@@ -103,39 +117,37 @@ func (s *adjustmentService) Adjustment(c *fiber.Ctx, req *validation.Create) (*e
 
 	var createdLogId uint
 
-	isProductWarehouseExist, err := s.ProductWarehouseRepo.ProductWarehouseExistByProductAndWarehouseID(ctx, uint(req.ProductID), uint(req.WarehouseID))
-	if err != nil {
-		s.Log.Errorf("Failed to check product warehouse existence: %+v", err)
-		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to validate product warehouse")
+	var projectFlockKandangID *uint
+	pfk, err := s.ProjectFlockKandangRepo.GetActiveByKandangID(ctx, uint(req.WarehouseID))
+	if err == nil && pfk != nil {
+		idCopy := uint(pfk.Id)
+		projectFlockKandangID = &idCopy
 	}
-	if !isProductWarehouseExist {
-		projectFlockKandangID, err := s.getActiveProjectFlockKandangID(ctx, uint(req.WarehouseID))
-		if err != nil {
-			return nil, err
+
+	pw, err := s.ProductWarehouseRepo.FindByProductWarehouseAndPfk(
+		ctx,
+		uint(req.ProductID),
+		uint(req.WarehouseID),
+		projectFlockKandangID,
+	)
+	if err != nil {
+		if !errors.Is(err, gorm.ErrRecordNotFound) {
+			s.Log.Errorf("Failed to find product warehouse: %+v", err)
+			return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to get product warehouse")
 		}
+
 		newPW := &entity.ProductWarehouse{
 			ProductId:             uint(req.ProductID),
 			WarehouseId:           uint(req.WarehouseID),
 			Quantity:              0,
-			ProjectFlockKandangId: &projectFlockKandangID,
-			// CreatedBy:   1, // TODO: should Get from auth middleware
+			ProjectFlockKandangId: projectFlockKandangID,
 		}
 
 		if err := s.ProductWarehouseRepo.CreateOne(ctx, newPW, nil); err != nil {
 			s.Log.Errorf("Failed to create product warehouse: %+v", err)
 			return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to create product warehouse")
 		}
-		s.Log.Infof("Product warehouse created: %+v", newPW.Id)
-	}
-
-	pw, err := s.ProductWarehouseRepo.GetProductWarehouseByProductAndWarehouseID(
-		ctx,
-		uint(req.ProductID),
-		uint(req.WarehouseID),
-	)
-	if err != nil {
-		s.Log.Errorf("Failed to get product warehouse for project flock check: %+v", err)
-		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to validate product warehouse")
+		pw = newPW
 	}
 
 	if err := common.EnsureProjectFlockNotClosedForProductWarehouses(
@@ -152,15 +164,16 @@ func (s *adjustmentService) Adjustment(c *fiber.Ctx, req *validation.Create) (*e
 			return fiber.NewError(fiber.StatusInternalServerError, "Failed to get product warehouse")
 		}
 
+		// Create StockLog for history tracking
 		afterQuantity := productWarehouse.Quantity
 		newLog := &entity.StockLog{
-
 			LoggableType:       string(utils.StockLogTypeAdjustment),
 			LoggableId:         0,
 			Notes:              req.Note,
 			ProductWarehouseId: productWarehouse.Id,
-			CreatedBy:          actorID, // TODO: should Get from auth middleware
+			CreatedBy:          actorID,
 		}
+
 		if transactionType == string(utils.StockLogTransactionTypeIncrease) {
 			afterQuantity += req.Quantity
 			newLog.Increase = afterQuantity
@@ -177,6 +190,57 @@ func (s *adjustmentService) Adjustment(c *fiber.Ctx, req *validation.Create) (*e
 			return err
 		}
 
+		// Create AdjustmentStock record for FIFO tracking
+		adjustmentStock := &entity.AdjustmentStock{
+			StockLogId:         newLog.Id,
+			ProductWarehouseId: productWarehouse.Id,
+		}
+
+		if transactionType == string(utils.StockLogTransactionTypeIncrease) {
+			// Adjustment INCREASE → Replenish stock (Stockable)
+			note := fmt.Sprintf("Stock Adjustment IN #%d", newLog.Id)
+			replenishResult, err := s.FifoSvc.Replenish(ctx, common.StockReplenishRequest{
+				StockableKey:       "ADJUSTMENT_IN",
+				StockableID:        newLog.Id,
+				ProductWarehouseID: uint(productWarehouse.Id),
+				Quantity:           req.Quantity,
+				Note:               &note,
+				Tx:                 tx,
+			})
+			if err != nil {
+				return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Failed to replenish stock via FIFO: %v", err))
+			}
+
+			// Update stockable tracking fields
+			adjustmentStock.TotalQty = replenishResult.AddedQuantity
+			adjustmentStock.TotalUsed = 0
+
+		} else {
+			// Adjustment DECREASE → Consume stock (Usable)
+			consumeResult, err := s.FifoSvc.Consume(ctx, common.StockConsumeRequest{
+				UsableKey:          "ADJUSTMENT_OUT",
+				UsableID:           newLog.Id,
+				ProductWarehouseID: uint(productWarehouse.Id),
+				Quantity:           req.Quantity,
+				AllowPending:       false, // Don't allow pending for adjustment
+				Tx:                 tx,
+			})
+			if err != nil {
+				return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Failed to consume stock via FIFO: %v", err))
+			}
+
+			// Update usable tracking fields
+			adjustmentStock.UsageQty = consumeResult.UsageQuantity
+			adjustmentStock.PendingQty = consumeResult.PendingQuantity
+		}
+
+		// Save AdjustmentStock record
+		if err := s.AdjustmentStockRepository.WithTx(tx).CreateOne(ctx, adjustmentStock, nil); err != nil {
+			s.Log.Errorf("Failed to create adjustment stock: %+v", err)
+			return fiber.NewError(fiber.StatusInternalServerError, "Failed to create adjustment stock record")
+		}
+
+		// Update ProductWarehouse quantity (for backward compatibility/reporting)
 		productWarehouse.Quantity = afterQuantity
 		if err := s.ProductWarehouseRepo.WithTx(tx).UpdateOne(ctx, productWarehouse.Id, productWarehouse, nil); err != nil {
 			s.Log.Errorf("Failed to update product warehouse quantity: %+v", err)

internal/modules/inventory/product-warehouses/dto/product_warehouse.dto.go

@@ -24,11 +24,12 @@ type ProductWarehousNestedDTO struct {
 
 type ProductWarehouseListDTO struct {
 	ProductWarehouseRelationDTO
-	Product     *productDTO.ProductRelationDTO `json:"product,omitempty"`
-	Warehouse   *WarehouseRelationDTO          `json:"warehouse,omitempty"`
-	CreatedUser *UserRelationDTO               `json:"created_user,omitempty"`
-	CreatedAt   time.Time                      `json:"created_at"`
-	UpdatedAt   time.Time                      `json:"updated_at"`
+	Product               *productDTO.ProductRelationDTO `json:"product,omitempty"`
+	Warehouse             *WarehouseRelationDTO          `json:"warehouse,omitempty"`
+	ProjectFlockKandang   *ProjectFlockKandangRelationDTO `json:"project_flock_kandang,omitempty"`
+	CreatedUser           *UserRelationDTO               `json:"created_user,omitempty"`
+	CreatedAt             time.Time                      `json:"created_at"`
+	UpdatedAt             time.Time                      `json:"updated_at"`
 }
 
 type UserRelationDTO struct {
@@ -71,6 +72,19 @@ type AreaRelationDTO struct {
 	Name string `json:"name"`
 }
 
+type ProjectFlockKandangRelationDTO struct {
+	Id             uint                     `json:"id"`
+	ProjectFlockId uint                     `json:"project_flock_id"`
+	KandangId      uint                     `json:"kandang_id"`
+	Period         int                      `json:"period"`
+	ProjectFlock   *ProjectFlockRelationDTO `json:"project_flock,omitempty"`
+}
+
+type ProjectFlockRelationDTO struct {
+	Id        uint   `json:"id"`
+	FlockName string `json:"flock_name"`
+}
+
 // === Mapper Functions ===
 
 func ToProductWarehouseRelationDTO(e entity.ProductWarehouse) ProductWarehouseRelationDTO {
@@ -105,6 +119,12 @@ func ToProductWarehouseListDTO(e entity.ProductWarehouse) ProductWarehouseListDT
 	// Map Product relation jika ada
 	if e.Product.Id != 0 {
 		product := productDTO.ToProductRelationDTO(e.Product)
+
+		// Tambahkan flock name ke product name jika ada project flock
+		if e.ProjectFlockKandang != nil && e.ProjectFlockKandang.ProjectFlock.Id != 0 {
+			product.Name = product.Name + " (" + e.ProjectFlockKandang.ProjectFlock.FlockName + ")"
+		}
+
 		dto.Product = &product
 	}
 
@@ -139,6 +159,26 @@ func ToProductWarehouseListDTO(e entity.ProductWarehouse) ProductWarehouseListDT
 		dto.Warehouse = &warehouse
 	}
 
+	// Map ProjectFlockKandang relation jika ada
+	if e.ProjectFlockKandang != nil && e.ProjectFlockKandang.Id != 0 {
+		pfkDTO := &ProjectFlockKandangRelationDTO{
+			Id:             e.ProjectFlockKandang.Id,
+			ProjectFlockId: e.ProjectFlockKandang.ProjectFlockId,
+			KandangId:      e.ProjectFlockKandang.KandangId,
+			Period:         e.ProjectFlockKandang.Period,
+		}
+
+		// Map ProjectFlock jika ada
+		if e.ProjectFlockKandang.ProjectFlock.Id != 0 {
+			pfkDTO.ProjectFlock = &ProjectFlockRelationDTO{
+				Id:        e.ProjectFlockKandang.ProjectFlock.Id,
+				FlockName: e.ProjectFlockKandang.ProjectFlock.FlockName,
+			}
+		}
+
+		dto.ProjectFlockKandang = pfkDTO
+	}
+
 	// Map CreatedUser relation jika ada
 	// if e.CreatedUser.Id != 0 {
 	// 	user := UserRelationDTO{

internal/modules/inventory/product-warehouses/repositories/product_warehouse.repository.go

@@ -18,6 +18,7 @@ type ProductWarehouseRepository interface {
 	ProductWarehouseExistByProductAndWarehouseID(ctx context.Context, productId, warehouseId uint) (bool, error)
 	ExistsByID(ctx context.Context, id uint) (bool, error)
 	GetProductWarehouseByProductAndWarehouseID(ctx context.Context, productId, warehouseId uint) (*entity.ProductWarehouse, error)
+	FindByProductWarehouseAndPfk(ctx context.Context, productID uint, warehouseID uint, projectFlockKandangID *uint) (*entity.ProductWarehouse, error)
 	GetByCategoryCodeAndWarehouseID(ctx context.Context, categoryCode string, warehouseId uint) ([]entity.ProductWarehouse, error)
 	GetLatestByCategoryCodeAndWarehouseID(ctx context.Context, categoryCode string, warehouseId uint, db *gorm.DB) (*entity.ProductWarehouse, error)
 	GetByFlagAndWarehouseID(ctx context.Context, flagName string, warehouseId uint) ([]entity.ProductWarehouse, error)
@@ -83,9 +84,43 @@ func (r *ProductWarehouseRepositoryImpl) ProductWarehouseExistByProductAndWareho
 
 func (r *ProductWarehouseRepositoryImpl) GetProductWarehouseByProductAndWarehouseID(ctx context.Context, productId, warehouseId uint) (*entity.ProductWarehouse, error) {
 	var productWarehouse entity.ProductWarehouse
-	if err := r.DB().WithContext(ctx).Where("product_id = ? AND warehouse_id = ?", productId, warehouseId).First(&productWarehouse).Error; err != nil {
+
+	err := r.DB().WithContext(ctx).
+		Where("product_id = ? AND warehouse_id = ? AND project_flock_kandang_id IS NOT NULL", productId, warehouseId).
+		Order("id DESC").
+		Preload("ProjectFlockKandang").
+		First(&productWarehouse).Error
+
+	if err == nil {
+
+		if productWarehouse.ProjectFlockKandang.ClosedAt == nil {
+			return &productWarehouse, nil
+		}
+
+	}
+
+	err = r.DB().WithContext(ctx).
+		Where("product_id = ? AND warehouse_id = ? AND project_flock_kandang_id IS NULL", productId, warehouseId).
+		First(&productWarehouse).Error
+
+	if err != nil {
 		return nil, err
 	}
+
+	return &productWarehouse, nil
+}
+
+func (r *ProductWarehouseRepositoryImpl) FindByProductWarehouseAndPfk(ctx context.Context, productID uint, warehouseID uint, projectFlockKandangID *uint) (*entity.ProductWarehouse, error) {
+	var productWarehouse entity.ProductWarehouse
+
+	err := r.DB().WithContext(ctx).
+		Where("product_id = ? AND warehouse_id = ? AND project_flock_kandang_id IS NOT DISTINCT FROM ?", productID, warehouseID, projectFlockKandangID).
+		First(&productWarehouse).Error
+
+	if err != nil {
+		return nil, err
+	}
+
 	return &productWarehouse, nil
 }
 
@@ -270,6 +305,8 @@ func (r *ProductWarehouseRepositoryImpl) GetDetailByID(ctx context.Context, id u
 		Preload("Warehouse").
 		Preload("Warehouse.Area").
 		Preload("Warehouse.Location").
+		Preload("ProjectFlockKandang").
+		Preload("ProjectFlockKandang.ProjectFlock").
 		First(&productWarehouse, id).Error
 	if err != nil {
 		return nil, err

internal/modules/inventory/product-warehouses/services/product_warehouse.service.go

@@ -44,7 +44,8 @@ func (s productWarehouseService) withRelations(db *gorm.DB) *gorm.DB {
 		Preload("Warehouse.Location").
 		Preload("Warehouse.Area").
 		Preload("Warehouse.Kandang").
-		Preload("ProjectFlockKandang")
+		Preload("ProjectFlockKandang").
+		Preload("ProjectFlockKandang.ProjectFlock")
 }
 
 func (s productWarehouseService) GetAll(c *fiber.Ctx, params *validation.Query) ([]entity.ProductWarehouse, int64, error) {

internal/modules/inventory/transfers/dto/transfer.dto.go

@@ -159,7 +159,7 @@ func ToTransferListDTO(e entity.StockTransfer) TransferListDTO {
 				Id:   d.Product.Id,
 				Name: d.Product.Name,
 			},
-			Quantity: d.Quantity,
+			Quantity: d.UsageQty + d.PendingQty, // Total actual quantity allocated
 		})
 	}
 
@@ -229,7 +229,7 @@ func ToTransferDetailDTO(e entity.StockTransfer) TransferDetailDTO {
 				Id:   d.Product.Id,
 				Name: d.Product.Name,
 			},
-			Quantity: d.Quantity,
+			Quantity: d.UsageQty + d.PendingQty, // Total actual quantity allocated
 		})
 	}
 

internal/modules/inventory/transfers/module.go

@@ -18,6 +18,8 @@ import (
 	rStockLogs "gitlab.com/mbugroup/lti-api.git/internal/modules/shared/repositories"
 	rUser "gitlab.com/mbugroup/lti-api.git/internal/modules/users/repositories"
 	sUser "gitlab.com/mbugroup/lti-api.git/internal/modules/users/services"
+	"gitlab.com/mbugroup/lti-api.git/internal/utils"
+	"gitlab.com/mbugroup/lti-api.git/internal/utils/fifo"
 )
 
 type TransferModule struct{}
@@ -34,13 +36,51 @@ func (TransferModule) RegisterRoutes(router fiber.Router, db *gorm.DB, validate
 	warehouseRepo := rWarehouse.NewWarehouseRepository(db)
 	projectFlockKandangRepo := rProjectFlockKandang.NewProjectFlockKandangRepository(db)
 	documentRepo := commonRepo.NewDocumentRepository(db)
+	stockAllocRepo := commonRepo.NewStockAllocationRepository(db)
 
 	documentSvc, err := commonSvc.NewDocumentServiceFromConfig(context.Background(), documentRepo)
 	if err != nil {
 		panic(err)
 	}
 
-	transferService := sTransfer.NewTransferService(validate, stockTransferRepo, stockTransferDetailRepo, stockTransferDeliveryRepo, StockTransferDeliveryItemRepo, stockLogsRepo, productWarehouseRepo, supplierRepo, warehouseRepo, projectFlockKandangRepo, documentSvc)
+	// Initialize FIFO Service
+	fifoService := commonSvc.NewFifoService(db, stockAllocRepo, productWarehouseRepo, utils.Log)
+
+	// Register Transfer as Stockable (adds stock to destination warehouse)
+	err = fifoService.RegisterStockable(fifo.StockableConfig{
+		Key:   fifo.StockableKey("STOCK_TRANSFER_IN"),
+		Table: "stock_transfer_details",
+		Columns: fifo.StockableColumns{
+			ID:                 "id",
+			ProductWarehouseID: "dest_product_warehouse_id",
+			TotalQuantity:      "total_qty",
+			TotalUsedQuantity:  "total_used",
+			CreatedAt:          "created_at",
+		},
+		OrderBy: []string{"created_at ASC", "id ASC"},
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	// Register Transfer as Usable (consumes stock from source warehouse)
+	err = fifoService.RegisterUsable(fifo.UsableConfig{
+		Key:   fifo.UsableKey("STOCK_TRANSFER_OUT"),
+		Table: "stock_transfer_details",
+		Columns: fifo.UsableColumns{
+			ID:                 "id",
+			ProductWarehouseID: "source_product_warehouse_id",
+			UsageQuantity:      "usage_qty",
+			PendingQuantity:    "pending_qty",
+			CreatedAt:          "created_at",
+		},
+		OrderBy: []string{"created_at ASC", "id ASC"},
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	transferService := sTransfer.NewTransferService(validate, stockTransferRepo, stockTransferDetailRepo, stockTransferDeliveryRepo, StockTransferDeliveryItemRepo, stockLogsRepo, productWarehouseRepo, supplierRepo, warehouseRepo, projectFlockKandangRepo, documentSvc, fifoService)
 	userService := sUser.NewUserService(userRepo, validate)
 
 	TransferRoutes(router, userService, transferService)

internal/modules/inventory/transfers/services/transfer.service.go

@@ -44,9 +44,10 @@ type transferService struct {
 	WarehouseRepo                 warehouseRepo.WarehouseRepository
 	ProjectFlockKandangRepo       projectFlockKandangRepo.ProjectFlockKandangRepository
 	DocumentSvc                   commonSvc.DocumentService
+	FifoSvc                       commonSvc.FifoService
 }
 
-func NewTransferService(validate *validator.Validate, stockTransferRepo rStockTransfer.StockTransferRepository, stockTransferDetailRepo rStockTransfer.StockTransferDetailRepository, stockTransferDeliveryRepo rStockTransfer.StockTransferDeliveryRepository, stockTransferDeliveryItemRepo rStockTransfer.StockTransferDeliveryItemRepository, stockLogsRepo rStockLogs.StockLogRepository, productWarehouseRepo rProductWarehouse.ProductWarehouseRepository, supplierRepo rSupplier.SupplierRepository, warehouseRepo warehouseRepo.WarehouseRepository, projectFlockKandangRepo projectFlockKandangRepo.ProjectFlockKandangRepository, documentSvc commonSvc.DocumentService) TransferService {
+func NewTransferService(validate *validator.Validate, stockTransferRepo rStockTransfer.StockTransferRepository, stockTransferDetailRepo rStockTransfer.StockTransferDetailRepository, stockTransferDeliveryRepo rStockTransfer.StockTransferDeliveryRepository, stockTransferDeliveryItemRepo rStockTransfer.StockTransferDeliveryItemRepository, stockLogsRepo rStockLogs.StockLogRepository, productWarehouseRepo rProductWarehouse.ProductWarehouseRepository, supplierRepo rSupplier.SupplierRepository, warehouseRepo warehouseRepo.WarehouseRepository, projectFlockKandangRepo projectFlockKandangRepo.ProjectFlockKandangRepository, documentSvc commonSvc.DocumentService, fifoSvc commonSvc.FifoService) TransferService {
 	return &transferService{
 		Log:                           utils.Log,
 		Validate:                      validate,
@@ -60,6 +61,7 @@ func NewTransferService(validate *validator.Validate, stockTransferRepo rStockTr
 		WarehouseRepo:                 warehouseRepo,
 		ProjectFlockKandangRepo:       projectFlockKandangRepo,
 		DocumentSvc:                   documentSvc,
+		FifoSvc:                       fifoSvc,
 	}
 }
 
@@ -104,28 +106,23 @@ func (s transferService) GetAll(c *fiber.Ctx, params *validation.Query) ([]entit
 }
 
 func (s transferService) GetOne(c *fiber.Ctx, id uint) (*entity.StockTransfer, error) {
-	s.Log.Infof("Attempting to get StockTransfer with ID: %d", id)
 
 	transferPtr, err := s.StockTransferRepo.GetByID(c.Context(), id, func(db *gorm.DB) *gorm.DB {
 		return s.withRelations(db)
 	})
 	if err != nil {
-		s.Log.Errorf("Error getting StockTransfer ID %d: %+v", id, err)
 		if errors.Is(err, gorm.ErrRecordNotFound) {
 			return nil, fiber.NewError(fiber.StatusNotFound, "Transfer not found")
 		}
 		return nil, fiber.NewError(fiber.StatusInternalServerError, "Failed to get transfer")
 	}
 
-	if transferPtr != nil {
-		s.Log.Infof("StockTransfer %d has %d documents", transferPtr.Id, len(transferPtr.Documents))
-	}
-
 	return transferPtr, nil
 }
 
 func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferRequest, files []*multipart.FileHeader) (*entity.StockTransfer, error) {
 
+	// === VALIDASI SOURCE WAREHOUSE ===
 	pwIDs := make([]uint, 0, len(req.Products))
 
 	for _, product := range req.Products {
@@ -152,6 +149,21 @@ func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferReques
 		return nil, err
 	}
 
+	destPfkID, err := s.getActiveProjectFlockKandangID(c.Context(), uint(req.DestinationWarehouseID))
+	if err != nil {
+		return nil, err
+	}
+
+	if s.ProjectFlockKandangRepo != nil {
+		projectFlockKandang, err := s.ProjectFlockKandangRepo.GetByID(c.Context(), destPfkID)
+		if err != nil {
+			return nil, fiber.NewError(fiber.StatusInternalServerError, "Gagal mengambil data project flock")
+		}
+		if projectFlockKandang.ClosedAt != nil {
+			return nil, fiber.NewError(fiber.StatusBadRequest, "Project flock tujuan sudah closing")
+		}
+	}
+
 	actorID, err := m.ActorIDFromContext(c)
 	if err != nil {
 		return nil, err
@@ -206,14 +218,62 @@ func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferReques
 			return err
 		}
 
-		var details []*entity.StockTransferDetail
+		// Prepare details and fetch product warehouses
+		details := make([]*entity.StockTransferDetail, 0, len(req.Products))
+		detailMap := make(map[uint64]*entity.StockTransferDetail)
+
 		for _, product := range req.Products {
-			details = append(details, &entity.StockTransferDetail{
+			// Get source product warehouse
+			sourcePW, err := s.ProductWarehouseRepo.GetProductWarehouseByProductAndWarehouseID(
+				c.Context(), uint(product.ProductID), uint(req.SourceWarehouseID),
+			)
+			if err != nil {
+				if errors.Is(err, gorm.ErrRecordNotFound) {
+					return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Stok produk %d tidak tersedia di gudang asal", product.ProductID))
+				}
+				return fiber.NewError(fiber.StatusInternalServerError, "Gagal mengambil data product warehouse source")
+			}
+
+			// Get or create destination product warehouse
+			destPW, err := s.ProductWarehouseRepo.GetProductWarehouseByProductAndWarehouseID(
+				c.Context(), uint(product.ProductID), uint(req.DestinationWarehouseID),
+			)
+			if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
+				return fiber.NewError(fiber.StatusInternalServerError, "Gagal mengambil data product warehouse destination")
+			}
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				ctx := c.Context()
+				projectFlockKandangID, err := s.getActiveProjectFlockKandangID(ctx, uint(req.DestinationWarehouseID))
+				if err != nil {
+					return err
+				}
+				destPW = &entity.ProductWarehouse{
+					ProductId:             uint(product.ProductID),
+					WarehouseId:           uint(req.DestinationWarehouseID),
+					Quantity:              0,
+					ProjectFlockKandangId: &projectFlockKandangID,
+				}
+				if err := s.ProductWarehouseRepo.WithTx(tx).CreateOne(c.Context(), destPW, nil); err != nil {
+					return fiber.NewError(fiber.StatusInternalServerError, "Gagal membuat product warehouse destination")
+				}
+			}
+
+			detail := &entity.StockTransferDetail{
 				StockTransferId: entityTransfer.Id,
 				ProductId:       uint64(product.ProductID),
-				Quantity:        product.ProductQty,
-			})
+
+				SourceProductWarehouseID: func() *uint64 { id := uint64(sourcePW.Id); return &id }(),
+				UsageQty:                 0,
+				PendingQty:               0,
+
+				DestProductWarehouseID: func() *uint64 { id := uint64(destPW.Id); return &id }(),
+				TotalQty:               0,
+				TotalUsed:              0,
+			}
+			details = append(details, detail)
+			detailMap[uint64(product.ProductID)] = detail
 		}
+
 		if err := s.StockTransferDetailRepo.WithTx(tx).CreateMany(c.Context(), details, nil); err != nil {
 			return err
 		}
@@ -233,23 +293,18 @@ func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferReques
 			return err
 		}
 
-		detailMap := make(map[uint64]uint64)
-		for _, d := range details {
-			detailMap[d.ProductId] = d.Id
-		}
-
 		var deliveryItems []*entity.StockTransferDeliveryItem
 
 		for i, delivery := range deliveries {
 			item := req.Deliveries[i]
 			for _, prod := range item.Products {
-				detailID, ok := detailMap[uint64(prod.ProductID)]
+				detail, ok := detailMap[uint64(prod.ProductID)]
 				if !ok {
 					return fmt.Errorf("produk %d tidak ditemukan di detail", prod.ProductID)
 				}
 				deliveryItems = append(deliveryItems, &entity.StockTransferDeliveryItem{
 					StockTransferDeliveryId: delivery.Id,
-					StockTransferDetailId:   detailID,
+					StockTransferDetailId:   detail.Id,
 					Quantity:                prod.ProductQty,
 				})
 			}
@@ -275,74 +330,61 @@ func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferReques
 					Files:            documentFiles,
 				})
 				if err != nil {
-					return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Failed to upload document for delivery %d", idx+1))
+					s.Log.WithError(err).Errorf("Failed to upload document for delivery %d (delivery_id: %d, filename: %s)",
+						idx+1, deliveries[idx].Id, file.Filename)
+					return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Failed to upload document for delivery %d: %v", idx+1, err))
 				}
 			}
 		}
 
+		// Execute FIFO operations for each product
 		for _, product := range req.Products {
-			sourcePW, err := s.ProductWarehouseRepo.GetProductWarehouseByProductAndWarehouseID(c.Context(), uint(product.ProductID), uint(req.SourceWarehouseID))
+			detail := detailMap[uint64(product.ProductID)]
+
+			// Step 1: Consume stock from source warehouse (STOCK_TRANSFER_OUT)
+			consumeResult, err := s.FifoSvc.Consume(c.Context(), commonSvc.StockConsumeRequest{
+				UsableKey:          "STOCK_TRANSFER_OUT",
+				UsableID:           uint(detail.Id),
+				ProductWarehouseID: uint(*detail.SourceProductWarehouseID),
+				Quantity:           product.ProductQty,
+				AllowPending:       false, // Don't allow pending, must have actual stock
+				Tx:                 tx,
+			})
 			if err != nil {
-				return fiber.NewError(fiber.StatusInternalServerError, "Failed to get source product warehouse")
-			}
-			if sourcePW.Quantity < product.ProductQty {
-				return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Insufficient stock in source warehouse for product ID: %d", product.ProductID))
-			}
-			sourcePW.Quantity -= product.ProductQty
-			if err := s.ProductWarehouseRepo.WithTx(tx).UpdateOne(c.Context(), sourcePW.Id, sourcePW, nil); err != nil {
-				return err
+				return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Stok tidak cukup di gudang asal untuk produk %d: %v", product.ProductID, err))
 			}
 
-			decreaseLog := &entity.StockLog{
-				Decrease:           product.ProductQty,
-				Notes:              "",
-				LoggableType:       string(utils.StockLogTypeTransfer),
-				LoggableId:         uint(entityTransfer.Id),
-				ProductWarehouseId: sourcePW.Id,
-				CreatedBy:          actorID,
-			}
-			if err := s.StockLogsRepository.WithTx(tx).CreateOne(c.Context(), decreaseLog, nil); err != nil {
-				return err
+			// Update usage tracking fields for source warehouse
+			if err := tx.Model(&entity.StockTransferDetail{}).
+				Where("id = ?", detail.Id).
+				Updates(map[string]interface{}{
+					"usage_qty":   consumeResult.UsageQuantity,
+					"pending_qty": consumeResult.PendingQuantity,
+				}).Error; err != nil {
+				return fmt.Errorf("gagal update usage tracking: %w", err)
 			}
 
-			destPW, err := s.ProductWarehouseRepo.GetProductWarehouseByProductAndWarehouseID(
-				c.Context(), uint(product.ProductID), uint(req.DestinationWarehouseID),
-			)
-			if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
-				return fiber.NewError(fiber.StatusInternalServerError, "Failed to get destination product warehouse")
-			}
-			if err != nil && errors.Is(err, gorm.ErrRecordNotFound) {
-				ctx := c.Context()
-				projectFlockKandangID, err := s.getActiveProjectFlockKandangID(ctx, uint(req.DestinationWarehouseID))
-				if err != nil {
-					return err
-				}
-				destPW = &entity.ProductWarehouse{
-					ProductId:             uint(product.ProductID),
-					WarehouseId:           uint(req.DestinationWarehouseID),
-					Quantity:              0,
-					ProjectFlockKandangId: &projectFlockKandangID,
-				}
-				if err := s.ProductWarehouseRepo.WithTx(tx).CreateOne(c.Context(), destPW, nil); err != nil {
-					return fiber.NewError(fiber.StatusInternalServerError, "Failed to create destination product warehouse")
-				}
+			// Step 2: Replenish stock to destination warehouse (STOCK_TRANSFER_IN)
+			note := fmt.Sprintf("Transfer #%s", entityTransfer.MovementNumber)
+			replenishResult, err := s.FifoSvc.Replenish(c.Context(), commonSvc.StockReplenishRequest{
+				StockableKey:       "STOCK_TRANSFER_IN",
+				StockableID:        uint(detail.Id),
+				ProductWarehouseID: uint(*detail.DestProductWarehouseID),
+				Quantity:           product.ProductQty,
+				Note:               &note,
+				Tx:                 tx,
+			})
+			if err != nil {
+				return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Gagal menambah stok di gudang tujuan untuk produk %d: %v", product.ProductID, err))
 			}
 
-			destPW.Quantity += product.ProductQty
-			if err := s.ProductWarehouseRepo.WithTx(tx).UpdateOne(c.Context(), destPW.Id, destPW, nil); err != nil {
-				return err
-			}
-
-			increaseLog := &entity.StockLog{
-				Increase:           product.ProductQty,
-				LoggableType:       string(utils.StockLogTypeTransfer),
-				LoggableId:         uint(entityTransfer.Id),
-				Notes:              "",
-				ProductWarehouseId: destPW.Id,
-				CreatedBy:          actorID,
-			}
-			if err := s.StockLogsRepository.WithTx(tx).CreateOne(c.Context(), increaseLog, nil); err != nil {
-				return err
+			// Update total tracking fields for destination warehouse
+			if err := tx.Model(&entity.StockTransferDetail{}).
+				Where("id = ?", detail.Id).
+				Updates(map[string]interface{}{
+					"total_qty": replenishResult.AddedQuantity,
+				}).Error; err != nil {
+				return fmt.Errorf("gagal update total tracking: %w", err)
 			}
 		}
 
@@ -350,7 +392,6 @@ func (s *transferService) CreateOne(c *fiber.Ctx, req *validation.TransferReques
 	})
 
 	if err != nil {
-		s.Log.Errorf("Transaction failed in CreateOne: %+v", err)
 		return nil, fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Failed to process transfer transaction: %v", err))
 	}