Feat[BE]: integrate FIFO service for chickin stock management

internal/modules/production/chickins/module.go

@@ -2,6 +2,7 @@ package chickins
 
 import (
 	"fmt"
+	"strings"
 
 	"github.com/go-playground/validator/v10"
 	"github.com/gofiber/fiber/v2"
@@ -9,6 +10,7 @@ import (
 
 	commonRepo "gitlab.com/mbugroup/lti-api.git/internal/common/repository"
 	commonSvc "gitlab.com/mbugroup/lti-api.git/internal/common/service"
+	"gitlab.com/mbugroup/lti-api.git/internal/utils/fifo"
 
 	rProductWarehouse "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/product-warehouses/repositories"
 	rKandang "gitlab.com/mbugroup/lti-api.git/internal/modules/master/kandangs/repositories"
@@ -36,16 +38,44 @@ func (ChickinModule) RegisterRoutes(router fiber.Router, db *gorm.DB, validate *
 	projectflockpopulationrepo := rProjectFlock.NewProjectFlockPopulationRepository(db)
 	projectFlockRepo := rProjectFlock.NewProjectflockRepository(db)
 	productWarehouseRepo := rProductWarehouse.NewProductWarehouseRepository(db)
+	stockAllocationRepo := commonRepo.NewStockAllocationRepository(db)
 
 	userRepo := rUser.NewUserRepository(db)
 
+	fifoService := commonSvc.NewFifoService(db, stockAllocationRepo, productWarehouseRepo, utils.Log)
+	if err := fifoService.RegisterUsable(fifo.UsableConfig{
+		Key:   fifo.UsablekeyProjectChickin,
+		Table: "project_chickins",
+		Columns: fifo.UsableColumns{
+			ID:                 "id",
+			ProductWarehouseID: "product_warehouse_id",
+			UsageQuantity:      "usage_qty",
+			PendingQuantity:    "pending_usage_qty",
+			CreatedAt:          "id",
+		},
+	}); err != nil {
+		if !strings.Contains(strings.ToLower(err.Error()), "already registered") {
+			panic(fmt.Sprintf("failed to register chickin usable workflow: %v", err))
+		}
+	}
+
 	approvalRepo := commonRepo.NewApprovalRepository(db)
 	approvalService := commonSvc.NewApprovalService(approvalRepo)
 	if err := approvalService.RegisterWorkflowSteps(utils.ApprovalWorkflowChickin, utils.ChickinApprovalSteps); err != nil {
 		panic(fmt.Sprintf("failed to register chickin approval workflow: %v", err))
 	}
 
-	chickinService := sChickin.NewChickinService(chickinRepo, kandangRepo, warehouseRepo, productWarehouseRepo, projectFlockRepo, projectflockkandangrepo, projectflockpopulationrepo, chickinDetailRepo, validate)
+	chickinService := sChickin.NewChickinService(
+		chickinRepo,
+		kandangRepo,
+		warehouseRepo,
+		productWarehouseRepo,
+		projectFlockRepo,
+		projectflockkandangrepo,
+		projectflockpopulationrepo,
+		chickinDetailRepo,
+		validate,
+		fifoService)
 	userService := sUser.NewUserService(userRepo, validate)
 
 	ChickinRoutes(router, userService, chickinService)

internal/modules/production/chickins/services/chickin.service.go

@@ -1,6 +1,7 @@
 package service
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"strings"
@@ -16,6 +17,7 @@ import (
 	validation "gitlab.com/mbugroup/lti-api.git/internal/modules/production/chickins/validations"
 	rProjectFlock "gitlab.com/mbugroup/lti-api.git/internal/modules/production/project_flocks/repositories"
 	"gitlab.com/mbugroup/lti-api.git/internal/utils"
+	"gitlab.com/mbugroup/lti-api.git/internal/utils/fifo"
 
 	"github.com/go-playground/validator/v10"
 	"github.com/gofiber/fiber/v2"
@@ -23,6 +25,8 @@ import (
 	"gorm.io/gorm"
 )
 
+var chickinUsableKey = fifo.UsablekeyProjectChickin
+
 type ChickinService interface {
 	GetAll(ctx *fiber.Ctx, params *validation.Query) ([]entity.ProjectChickin, int64, error)
 	GetOne(ctx *fiber.Ctx, id uint) (*entity.ProjectChickin, error)
@@ -43,9 +47,10 @@ type chickinService struct {
 	ProjectflockKandangRepo    rProjectFlock.ProjectFlockKandangRepository
 	ProjectflockPopulationRepo rProjectFlock.ProjectFlockPopulationRepository
 	ProjectChickinDetailRepo   repository.ProjectChickinDetailRepository
+	FifoSvc                    commonSvc.FifoService
 }
 
-func NewChickinService(repo repository.ProjectChickinRepository, kandangRepo KandangRepo.KandangRepository, warehouseRepo rWarehouse.WarehouseRepository, productWarehouseRepo rProductWarehouse.ProductWarehouseRepository, projectFlockRepo rProjectFlock.ProjectflockRepository, projectflockkandangRepo rProjectFlock.ProjectFlockKandangRepository, projectflockpopulationRepo rProjectFlock.ProjectFlockPopulationRepository, projectChickinDetailRepo repository.ProjectChickinDetailRepository, validate *validator.Validate) ChickinService {
+func NewChickinService(repo repository.ProjectChickinRepository, kandangRepo KandangRepo.KandangRepository, warehouseRepo rWarehouse.WarehouseRepository, productWarehouseRepo rProductWarehouse.ProductWarehouseRepository, projectFlockRepo rProjectFlock.ProjectflockRepository, projectflockkandangRepo rProjectFlock.ProjectFlockKandangRepository, projectflockpopulationRepo rProjectFlock.ProjectFlockPopulationRepository, projectChickinDetailRepo repository.ProjectChickinDetailRepository, validate *validator.Validate, fifoSvc commonSvc.FifoService) ChickinService {
 	return &chickinService{
 		Log:                        utils.Log,
 		Validate:                   validate,
@@ -57,6 +62,7 @@ func NewChickinService(repo repository.ProjectChickinRepository, kandangRepo Kan
 		ProjectflockKandangRepo:    projectflockkandangRepo,
 		ProjectflockPopulationRepo: projectflockpopulationRepo,
 		ProjectChickinDetailRepo:   projectChickinDetailRepo,
+		FifoSvc:                    fifoSvc,
 	}
 }
 
@@ -124,8 +130,6 @@ func (s *chickinService) CreateOne(c *fiber.Ctx, req *validation.Create) ([]enti
 		return nil, fiber.NewError(fiber.StatusNotFound, "Warehouse for Kandang not found")
 	}
 
-	category := strings.ToUpper(strings.TrimSpace(projectFlockKandang.ProjectFlock.Category))
-
 	actorID, err := m.ActorIDFromContext(c)
 	if err != nil {
 		return nil, err
@@ -152,20 +156,16 @@ func (s *chickinService) CreateOne(c *fiber.Ctx, req *validation.Create) ([]enti
 			return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Invalid ChickInDate format for product warehouse %d", chickinReq.ProductWarehouseId))
 		}
 
-		availableQty, err := s.calculateAvailableQuantity(c, req.ProjectFlockKandangId, productWarehouse, category)
-		if err != nil {
-			return nil, fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Failed to calculate available quantity for product warehouse %d", chickinReq.ProductWarehouseId))
-		}
-
+		availableQty := productWarehouse.Quantity
 		if availableQty <= 0 {
-			return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("No available quantity for product warehouse %d", chickinReq.ProductWarehouseId))
+			return nil, fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("No available stock in product warehouse %d for chickin", chickinReq.ProductWarehouseId))
 		}
 
 		newChickin := &entity.ProjectChickin{
 			ProjectFlockKandangId: req.ProjectFlockKandangId,
 			ChickInDate:           chickinDate,
-			UsageQty:              0,
-			PendingUsageQty:       availableQty,
+			UsageQty:              availableQty,
+			PendingUsageQty:       0,
 			ProductWarehouseId:    chickinReq.ProductWarehouseId,
 			Notes:                 chickinReq.Note,
 			CreatedBy:             actorID,
@@ -193,6 +193,25 @@ func (s *chickinService) CreateOne(c *fiber.Ctx, req *validation.Create) ([]enti
 			return fiber.NewError(fiber.StatusInternalServerError, "Failed to create chickins")
 		}
 
+		for _, chickin := range newChikins {
+			if err := s.ConsumeChickinStocks(c.Context(), dbTransaction, chickin); err != nil {
+				return err
+			}
+
+			if chickin.PendingUsageQty > 0 {
+				return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("Cannot create chickin %d - insufficient stock. Required: %.0f, Available: %.0f, Pending: %.0f", chickin.Id, chickin.UsageQty+chickin.PendingUsageQty, chickin.UsageQty, chickin.PendingUsageQty))
+			}
+		}
+
+		warehouseDeltas := make(map[uint]float64)
+		for _, chickin := range newChikins {
+			warehouseDeltas[chickin.ProductWarehouseId] -= chickin.UsageQty
+		}
+		if err := s.adjustProductWarehouseQuantities(c.Context(), dbTransaction, warehouseDeltas); err != nil {
+			s.Log.Errorf("Failed to adjust product warehouses: %+v", err)
+			return err
+		}
+
 		latest, err := approvalSvcTx.LatestByTarget(c.Context(), utils.ApprovalWorkflowChickin, projectFlockKandang.Id, nil)
 		if err != nil {
 			return fiber.NewError(fiber.StatusInternalServerError, "Failed to get latest approval")
@@ -287,6 +306,27 @@ func (s chickinService) UpdateOne(c *fiber.Ctx, req *validation.Update, id uint)
 
 func (s chickinService) DeleteOne(c *fiber.Ctx, id uint) error {
 
+	chickin, err := s.Repository.GetByID(c.Context(), id, nil)
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return fiber.NewError(fiber.StatusNotFound, "Chickin not found")
+		}
+		return err
+	}
+
+	if chickin.UsageQty > 0 {
+		if err := s.ReleaseChickinStocks(c.Context(), s.Repository.DB(), chickin); err != nil {
+			return err
+		}
+
+		warehouseDeltas := make(map[uint]float64)
+		warehouseDeltas[chickin.ProductWarehouseId] += chickin.UsageQty
+		if err := s.adjustProductWarehouseQuantities(c.Context(), s.Repository.DB(), warehouseDeltas); err != nil {
+			s.Log.Errorf("Failed to adjust product warehouses for deleted chickin %d: %+v", chickin.Id, err)
+			return err
+		}
+	}
+
 	if err := s.Repository.DeleteOne(c.Context(), id); err != nil {
 		if errors.Is(err, gorm.ErrRecordNotFound) {
 			return fiber.NewError(fiber.StatusNotFound, "Chickin not found")
@@ -297,54 +337,6 @@ func (s chickinService) DeleteOne(c *fiber.Ctx, id uint) error {
 	return nil
 }
 
-func (s chickinService) calculateAvailableQuantity(ctx *fiber.Ctx, projectFlockKandangID uint, productWarehouse *entity.ProductWarehouse, category string) (float64, error) {
-	availableQty := productWarehouse.Quantity
-
-	if category == string(utils.ProjectFlockCategoryGrowing) {
-		var totalPendingQty float64
-
-		chickins, err := s.Repository.GetByProjectFlockKandangID(ctx.Context(), projectFlockKandangID)
-		if err == nil {
-			for _, chickin := range chickins {
-
-				if chickin.ProductWarehouseId == productWarehouse.Id && chickin.DeletedAt.Time.IsZero() && chickin.PendingUsageQty > 0 {
-					totalPendingQty += chickin.PendingUsageQty
-				}
-			}
-		}
-
-		availableQty = productWarehouse.Quantity - totalPendingQty
-		if availableQty < 0 {
-			availableQty = 0
-		}
-	} else if category == string(utils.ProjectFlockCategoryLaying) {
-		var totalPopulation float64
-		var totalPendingQty float64
-
-		populations, err := s.ProjectflockPopulationRepo.GetByProjectFlockKandangIDAndProductWarehouseID(ctx.Context(), projectFlockKandangID, productWarehouse.Id)
-		if err == nil {
-			for _, pop := range populations {
-				totalPopulation += pop.TotalQty
-			}
-		}
-		chickins, err := s.Repository.GetByProjectFlockKandangID(ctx.Context(), projectFlockKandangID)
-		if err == nil {
-			for _, chickin := range chickins {
-
-				if chickin.ProductWarehouseId == productWarehouse.Id && chickin.DeletedAt.Time.IsZero() && chickin.PendingUsageQty > 0 {
-					totalPendingQty += chickin.PendingUsageQty
-				}
-			}
-		}
-		availableQty = productWarehouse.Quantity - totalPopulation - totalPendingQty
-		if availableQty < 0 {
-			availableQty = 0
-		}
-	}
-
-	return availableQty, nil
-}
-
 func (s chickinService) Approval(c *fiber.Ctx, req *validation.Approve) ([]entity.ProjectChickin, error) {
 	if err := s.Validate.Struct(req); err != nil {
 		return nil, err
@@ -373,11 +365,10 @@ func (s chickinService) Approval(c *fiber.Ctx, req *validation.Approve) ([]entit
 	}
 
 	for _, id := range approvableIDs {
-		idCopy := id
-		if err := commonSvc.EnsureRelations(c.Context(), commonSvc.RelationCheck{Name: "ProjectFlockKandang", ID: &idCopy, Exists: s.ProjectflockKandangRepo.IdExists}); err != nil {
+
+		if err := commonSvc.EnsureRelations(c.Context(), commonSvc.RelationCheck{Name: "ProjectFlockKandang", ID: &id, Exists: s.ProjectflockKandangRepo.IdExists}); err != nil {
 			return nil, err
 		}
-
 		latestApproval, err := approvalSvc.LatestByTarget(c.Context(), utils.ApprovalWorkflowChickin, id, nil)
 
 		if err != nil {
@@ -400,7 +391,6 @@ func (s chickinService) Approval(c *fiber.Ctx, req *validation.Approve) ([]entit
 
 		approvalSvc := commonSvc.NewApprovalService(commonRepo.NewApprovalRepository(dbTransaction))
 		chickinRepoTx := repository.NewChickinRepository(dbTransaction)
-		productWarehouseTx := s.ProductWarehouseRepo.WithTx(dbTransaction)
 
 		for _, approvableID := range approvableIDs {
 			if _, err := approvalSvc.CreateApproval(
@@ -477,27 +467,17 @@ func (s chickinService) Approval(c *fiber.Ctx, req *validation.Approve) ([]entit
 					continue
 				}
 
-				kandangForRejection, err := s.ProjectflockKandangRepo.GetByID(c.Context(), approvableID)
-				if err != nil {
-					if errors.Is(err, gorm.ErrRecordNotFound) {
-						return fiber.NewError(fiber.StatusNotFound, fmt.Sprintf("ProjectFlockKandang %d not found", approvableID))
-					}
-					return fiber.NewError(fiber.StatusInternalServerError, "Failed to get ProjectFlockKandang")
-				}
-
-				categoryForRejection := strings.ToUpper(strings.TrimSpace(kandangForRejection.ProjectFlock.Category))
-
 				for _, chickin := range chickins {
 
-					if categoryForRejection == string(utils.ProjectFlockCategoryGrowing) {
-						updates := map[string]any{"qty": gorm.Expr("qty + ?", chickin.PendingUsageQty)}
+					if err := s.ReleaseChickinStocks(c.Context(), dbTransaction, &chickin); err != nil {
+						return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Failed to release stock for rejected chickin %d: %v", chickin.Id, err))
+					}
 
-						if err := productWarehouseTx.PatchOne(c.Context(), chickin.ProductWarehouseId, updates, nil); err != nil {
-							if errors.Is(err, gorm.ErrRecordNotFound) {
-								return fiber.NewError(fiber.StatusNotFound, fmt.Sprintf("Product warehouse %d not found during rejection", chickin.ProductWarehouseId))
-							}
-							return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("Failed to restore product warehouse quantity for chickin %d", chickin.Id))
-						}
+					warehouseDeltas := make(map[uint]float64)
+					warehouseDeltas[chickin.ProductWarehouseId] += chickin.UsageQty
+					if err := s.adjustProductWarehouseQuantities(c.Context(), dbTransaction, warehouseDeltas); err != nil {
+						s.Log.Errorf("Failed to adjust product warehouses for rejected chickin %d: %+v", chickin.Id, err)
+						return err
 					}
 
 					if err := chickinRepoTx.DeleteOne(c.Context(), chickin.Id); err != nil {
@@ -558,7 +538,6 @@ func (s *chickinService) getOrCreateProductWarehouse(ctx *fiber.Ctx, warehouseId
 		WarehouseId:           warehouseId,
 		ProjectFlockKandangId: projectFlockKandangId,
 		Quantity:              0,
-		// CreatedBy:   actorID,
 	}
 
 	if err := s.ProductWarehouseRepo.WithTx(dbTransaction).CreateOne(ctx.Context(), newPW, nil); err != nil {
@@ -574,10 +553,10 @@ func (s *chickinService) convertChickinsToTarget(ctx *fiber.Ctx, chickins []enti
 		return fmt.Errorf("invalid target product warehouse")
 	}
 
-	chickinRepoTx := repository.NewChickinRepository(dbTransaction)
-	productWarehouseTx := s.ProductWarehouseRepo.WithTx(dbTransaction)
 	ProjectFlockPopulationRepotx := s.ProjectflockPopulationRepo.WithTx(dbTransaction)
 
+	var totalQuantityAdded float64
+
 	for _, chickin := range chickins {
 
 		populationExists, err := ProjectFlockPopulationRepotx.ExistsByProjectChickinID(ctx.Context(), chickin.Id)
@@ -590,34 +569,7 @@ func (s *chickinService) convertChickinsToTarget(ctx *fiber.Ctx, chickins []enti
 			continue
 		}
 
-		quantityToConvert := chickin.PendingUsageQty
-
-		if err := chickinRepoTx.PatchOne(ctx.Context(), chickin.Id, map[string]any{
-			"usage_qty":         quantityToConvert,
-			"pending_usage_qty": 0,
-		}, nil); err != nil {
-			return fmt.Errorf("failed to update chickin %d qty: %w", chickin.Id, err)
-		}
-
-		if chickin.ProductWarehouseId != targetPW.Id {
-			if err := productWarehouseTx.PatchOne(ctx.Context(), chickin.ProductWarehouseId, map[string]any{
-				"qty": gorm.Expr("qty - ?", quantityToConvert),
-			}, nil); err != nil {
-				if errors.Is(err, gorm.ErrRecordNotFound) {
-					return fiber.NewError(fiber.StatusNotFound, fmt.Sprintf("Source product warehouse %d not found", chickin.ProductWarehouseId))
-				}
-				return fmt.Errorf("failed to deduct source warehouse quantity for chickin %d: %w", chickin.Id, err)
-			}
-		}
-
-		if err := productWarehouseTx.PatchOne(ctx.Context(), targetPW.Id, map[string]any{
-			"qty": gorm.Expr("qty + ?", quantityToConvert),
-		}, nil); err != nil {
-			if errors.Is(err, gorm.ErrRecordNotFound) {
-				return fiber.NewError(fiber.StatusNotFound, fmt.Sprintf("Target product warehouse %d not found", targetPW.Id))
-			}
-			return fmt.Errorf("failed to update target warehouse quantity: %w", err)
-		}
+		quantityToConvert := chickin.UsageQty
 
 		population := &entity.ProjectFlockPopulation{
 			ProjectChickinId:   chickin.Id,
@@ -630,7 +582,80 @@ func (s *chickinService) convertChickinsToTarget(ctx *fiber.Ctx, chickins []enti
 		if err := ProjectFlockPopulationRepotx.CreateOne(ctx.Context(), population, nil); err != nil {
 			return err
 		}
+
+		totalQuantityAdded += quantityToConvert
+	}
+
+	if totalQuantityAdded > 0 {
+		if err := s.ProductWarehouseRepo.AdjustQuantities(ctx.Context(), map[uint]float64{
+			targetPW.Id: totalQuantityAdded,
+		}, func(db *gorm.DB) *gorm.DB {
+			return dbTransaction
+		}); err != nil {
+			return fmt.Errorf("failed to update target product warehouse quantity: %w", err)
+		}
 	}
 
 	return nil
 }
+
+func (s *chickinService) ConsumeChickinStocks(ctx context.Context, tx *gorm.DB, chickin *entity.ProjectChickin) error {
+	if chickin == nil || s.FifoSvc == nil {
+		return nil
+	}
+
+	var desired float64 = chickin.UsageQty
+
+	result, err := s.FifoSvc.Consume(ctx, commonSvc.StockConsumeRequest{
+		UsableKey:          chickinUsableKey,
+		UsableID:           chickin.Id,
+		ProductWarehouseID: chickin.ProductWarehouseId,
+		Quantity:           desired,
+		AllowPending:       false,
+		Tx:                 tx,
+	})
+	if err != nil {
+		s.Log.Errorf("Failed to consume FIFO stock for chickin %d: %+v", chickin.Id, err)
+		return err
+	}
+
+	if err := tx.Model(&entity.ProjectChickin{}).Where("id = ?", chickin.Id).Updates(map[string]interface{}{
+		"usage_qty":         result.UsageQuantity,
+		"pending_usage_qty": result.PendingQuantity,
+	}).Error; err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (s *chickinService) ReleaseChickinStocks(ctx context.Context, tx *gorm.DB, chickin *entity.ProjectChickin) error {
+	if chickin == nil || s.FifoSvc == nil {
+		return nil
+	}
+
+	if err := s.FifoSvc.ReleaseUsage(ctx, commonSvc.StockReleaseRequest{
+		UsableKey: chickinUsableKey,
+		UsableID:  chickin.Id,
+		Tx:        tx,
+	}); err != nil {
+		s.Log.Errorf("Failed to release FIFO stock for chickin %d: %+v", chickin.Id, err)
+		return err
+	}
+
+	if err := tx.Model(&entity.ProjectChickin{}).Where("id = ?", chickin.Id).Updates(map[string]interface{}{
+		"usage_qty":         0,
+		"pending_usage_qty": 0,
+	}).Error; err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (s *chickinService) adjustProductWarehouseQuantities(ctx context.Context, tx *gorm.DB, deltas map[uint]float64) error {
+	if len(deltas) == 0 {
+		return nil
+	}
+	return s.ProductWarehouseRepo.AdjustQuantities(ctx, deltas, func(*gorm.DB) *gorm.DB { return tx })
+}

internal/utils/fifo/constants.go

@@ -2,4 +2,5 @@ package fifo
 
 const (
 	UsableKeyRecordingStock UsableKey = "RECORDING_STOCK"
+	UsablekeyProjectChickin UsableKey = "PROJECT_CHICKIN"
 )