feat: завершён этап 3 - API структура Core Service

- Созданы репозитории для locations, items, operations
- Реализованы сервисы с бизнес-логикой
- Созданы HTTP handlers для всех API endpoints
- Добавлена функция GetClaims в middleware
- Обновлён server.go для интеграции всех компонентов
- Поддержка JSON полей в PostgreSQL
- Organization-scope фильтрация во всех операциях
- Валидация запросов через validator

Готово для этапа 4 - Шаблоны помещений

core-service/internal/service/location_service.go

@@ -0,0 +1,130 @@
+package service
+
+import (
+	"context"
+	"time"
+
+	"erp-mvp/core-service/internal/models"
+	"erp-mvp/core-service/internal/repository"
+
+	"github.com/google/uuid"
+	"github.com/sirupsen/logrus"
+)
+
+type LocationService interface {
+	CreateLocation(ctx context.Context, orgID uuid.UUID, req *models.CreateLocationRequest) (*models.StorageLocation, error)
+	GetLocation(ctx context.Context, id uuid.UUID, orgID uuid.UUID) (*models.StorageLocation, error)
+	GetLocations(ctx context.Context, orgID uuid.UUID) ([]*models.StorageLocation, error)
+	UpdateLocation(ctx context.Context, id uuid.UUID, orgID uuid.UUID, req *models.CreateLocationRequest) (*models.StorageLocation, error)
+	DeleteLocation(ctx context.Context, id uuid.UUID, orgID uuid.UUID) error
+	GetChildren(ctx context.Context, parentID uuid.UUID, orgID uuid.UUID) ([]*models.StorageLocation, error)
+}
+
+type locationService struct {
+	locationRepo repository.LocationRepository
+	logger       *logrus.Logger
+}
+
+func NewLocationService(locationRepo repository.LocationRepository) LocationService {
+	return &locationService{
+		locationRepo: locationRepo,
+		logger:       logrus.New(),
+	}
+}
+
+func (s *locationService) CreateLocation(ctx context.Context, orgID uuid.UUID, req *models.CreateLocationRequest) (*models.StorageLocation, error) {
+	s.logger.Info("Creating location for organization: ", orgID)
+	
+	location := &models.StorageLocation{
+		ID:             uuid.New(),
+		OrganizationID: orgID,
+		ParentID:       req.ParentID,
+		Name:           req.Name,
+		Address:        req.Address,
+		Type:           req.Type,
+		Coordinates:    req.Coordinates,
+		CreatedAt:      time.Now(),
+	}
+	
+	if err := s.locationRepo.Create(ctx, location); err != nil {
+		s.logger.Error("Failed to create location: ", err)
+		return nil, err
+	}
+	
+	s.logger.Info("Location created successfully: ", location.ID)
+	return location, nil
+}
+
+func (s *locationService) GetLocation(ctx context.Context, id uuid.UUID, orgID uuid.UUID) (*models.StorageLocation, error) {
+	s.logger.Info("Getting location: ", id, " for organization: ", orgID)
+	
+	location, err := s.locationRepo.GetByID(ctx, id, orgID)
+	if err != nil {
+		s.logger.Error("Failed to get location: ", err)
+		return nil, err
+	}
+	
+	return location, nil
+}
+
+func (s *locationService) GetLocations(ctx context.Context, orgID uuid.UUID) ([]*models.StorageLocation, error) {
+	s.logger.Info("Getting all locations for organization: ", orgID)
+	
+	locations, err := s.locationRepo.GetByOrganization(ctx, orgID)
+	if err != nil {
+		s.logger.Error("Failed to get locations: ", err)
+		return nil, err
+	}
+	
+	return locations, nil
+}
+
+func (s *locationService) UpdateLocation(ctx context.Context, id uuid.UUID, orgID uuid.UUID, req *models.CreateLocationRequest) (*models.StorageLocation, error) {
+	s.logger.Info("Updating location: ", id, " for organization: ", orgID)
+	
+	// Сначала получаем существующую локацию
+	location, err := s.locationRepo.GetByID(ctx, id, orgID)
+	if err != nil {
+		s.logger.Error("Failed to get location for update: ", err)
+		return nil, err
+	}
+	
+	// Обновляем поля
+	location.ParentID = req.ParentID
+	location.Name = req.Name
+	location.Address = req.Address
+	location.Type = req.Type
+	location.Coordinates = req.Coordinates
+	
+	if err := s.locationRepo.Update(ctx, location); err != nil {
+		s.logger.Error("Failed to update location: ", err)
+		return nil, err
+	}
+	
+	s.logger.Info("Location updated successfully: ", location.ID)
+	return location, nil
+}
+
+func (s *locationService) DeleteLocation(ctx context.Context, id uuid.UUID, orgID uuid.UUID) error {
+	s.logger.Info("Deleting location: ", id, " for organization: ", orgID)
+	
+	if err := s.locationRepo.Delete(ctx, id, orgID); err != nil {
+		s.logger.Error("Failed to delete location: ", err)
+		return err
+	}
+	
+	s.logger.Info("Location deleted successfully: ", id)
+	return nil
+}
+
+func (s *locationService) GetChildren(ctx context.Context, parentID uuid.UUID, orgID uuid.UUID) ([]*models.StorageLocation, error) {
+	s.logger.Info("Getting children for location: ", parentID, " in organization: ", orgID)
+	
+	children, err := s.locationRepo.GetChildren(ctx, parentID, orgID)
+	if err != nil {
+		s.logger.Error("Failed to get children: ", err)
+		return nil, err
+	}
+	
+	return children, nil
+}