Feat[BE-297]: Create sub module inventory product stock; create api list product stock and api get one product stock

internal/modules/inventory/product-stocks/services/product-stock.service.go

@@ -0,0 +1,89 @@
+package service
+
+import (
+	"errors"
+
+	entity "gitlab.com/mbugroup/lti-api.git/internal/entities"
+	validation "gitlab.com/mbugroup/lti-api.git/internal/modules/inventory/product-stocks/validations"
+	productRepository "gitlab.com/mbugroup/lti-api.git/internal/modules/master/products/repositories"
+	"gitlab.com/mbugroup/lti-api.git/internal/utils"
+
+	"github.com/go-playground/validator/v10"
+	"github.com/gofiber/fiber/v2"
+	"github.com/sirupsen/logrus"
+	"gorm.io/gorm"
+)
+
+type ProductStockService interface {
+	GetAll(ctx *fiber.Ctx, params *validation.Query) ([]entity.Product, int64, error)
+	GetOne(ctx *fiber.Ctx, id uint) (*entity.Product, error)
+}
+
+type productStockService struct {
+	Log               *logrus.Logger
+	Validate          *validator.Validate
+	ProductRepository productRepository.ProductRepository
+}
+
+func NewProductStockService(
+	productRepo productRepository.ProductRepository,
+	validate *validator.Validate,
+) ProductStockService {
+	return &productStockService{
+		Log:               utils.Log,
+		Validate:          validate,
+		ProductRepository: productRepo,
+	}
+}
+
+func (s productStockService) withRelations(db *gorm.DB) *gorm.DB {
+	return db.
+		Preload("CreatedUser").
+		Preload("Uom").
+		Preload("ProductCategory").
+		Preload("Flags").
+		Preload("ProductWarehouses").
+		Preload("ProductWarehouses.Warehouse").
+		Preload("ProductWarehouses.Warehouse.Location").
+		Preload("ProductWarehouses.StockLogs", func(db *gorm.DB) *gorm.DB {
+			return db.Order("created_at ASC")
+		}).
+		Preload("ProductSuppliers").
+		Preload("ProductSuppliers.Supplier", func(db *gorm.DB) *gorm.DB {
+			return db.Order("suppliers.name ASC")
+		})
+}
+
+func (s productStockService) GetAll(c *fiber.Ctx, params *validation.Query) ([]entity.Product, int64, error) {
+	if err := s.Validate.Struct(params); err != nil {
+		return nil, 0, err
+	}
+
+	offset := (params.Page - 1) * params.Limit
+
+	productStocks, total, err := s.ProductRepository.GetAll(c.Context(), offset, params.Limit, func(db *gorm.DB) *gorm.DB {
+		db = s.withRelations(db)
+		if params.Search != "" {
+			return db.Where("name ILIKE ?", "%"+params.Search+"%")
+		}
+		return db.Order("created_at DESC").Order("updated_at DESC")
+	})
+
+	if err != nil {
+		s.Log.Errorf("Failed to get productStocks: %+v", err)
+		return nil, 0, err
+	}
+	return productStocks, total, nil
+}
+
+func (s productStockService) GetOne(c *fiber.Ctx, id uint) (*entity.Product, error) {
+	product, err := s.ProductRepository.GetByID(c.Context(), id, s.withRelations)
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return nil, fiber.NewError(fiber.StatusNotFound, "Product not found")
+	}
+	if err != nil {
+		s.Log.Errorf("Failed get product by id: %+v", err)
+		return nil, err
+	}
+	return product, nil
+}