Refactor Notification Management and Enhance Customer Features

- Updated the notification handling logic to utilize a new SDK for sending notifications, improving the flexibility and scalability of the notification system.
- Introduced new methods in the notification service for sending notifications to users and customers based on various target audience types, enhancing the notification delivery capabilities.
- Added a new endpoint to assign companies to a customer, improving customer management functionalities.
- Refactored the customer entity and forms to replace 'CompanyIDs' with 'Companies', ensuring consistency across the data model.
- Enhanced API documentation with Swagger comments for the new endpoint and updated notification structures, ensuring clarity for API consumers.

internal/customer/service.go

@@ -29,6 +29,9 @@ type Service interface {
 	Register(ctx context.Context, form *CreateCustomerForm) (*CustomerResponse, error)
 	GetByID(ctx context.Context, id string) (*CustomerResponse, error)
 	Search(ctx context.Context, form *SearchCustomersForm, pagination *response.Pagination) (*CustomerListResponse, error)
+	GetCustomersByIDs(ctx context.Context, ids []string) (*CustomerListResponse, error)
+	GetCustomersByRole(ctx context.Context, role string) (*CustomerListResponse, error)
+	GetCustomersByCompanies(ctx context.Context, companies []string) (*CustomerListResponse, error)
 	Update(ctx context.Context, id string, form *UpdateCustomerForm) (*CustomerResponse, error)
 	Delete(ctx context.Context, id string) error
 	UpdateStatus(ctx context.Context, id string, form *UpdateStatusForm) error
@@ -206,6 +209,65 @@ func (s *customerService) Search(ctx context.Context, form *SearchCustomersForm,
 	}, nil
 }
 
+// GetCustomersByIDs retrieves customers by IDs
+func (s *customerService) GetCustomersByIDs(ctx context.Context, ids []string) (*CustomerListResponse, error) {
+	customers, err := s.repository.GetByIDs(ctx, ids)
+	if err != nil {
+		return nil, err
+	}
+
+	var customerResponses []*CustomerResponse
+	for _, customer := range customers {
+		customerResponses = append(customerResponses, customer.ToResponse(nil))
+	}
+
+	return &CustomerListResponse{
+		Customers: customerResponses,
+	}, nil
+}
+
+// GetCustomersByRole retrieves customers by role
+func (s *customerService) GetCustomersByRole(ctx context.Context, role string) (*CustomerListResponse, error) {
+	customers, err := s.repository.GetByRole(ctx, CustomerRole(role))
+	if err != nil {
+		s.logger.Error("Failed to get customers by role", map[string]interface{}{
+			"error": err.Error(),
+			"role":  role,
+		})
+		return nil, err
+	}
+
+	var customerResponses []*CustomerResponse
+	for _, customer := range customers {
+		customerResponses = append(customerResponses, customer.ToResponse(nil))
+	}
+
+	return &CustomerListResponse{
+		Customers: customerResponses,
+	}, nil
+}
+
+// GetCustomersByCompanies retrieves customers by companies
+func (s *customerService) GetCustomersByCompanies(ctx context.Context, companies []string) (*CustomerListResponse, error) {
+	customers, err := s.repository.GetByCompanies(ctx, companies)
+	if err != nil {
+		s.logger.Error("Failed to get customers by companies", map[string]interface{}{
+			"error":     err.Error(),
+			"companies": companies,
+		})
+		return nil, err
+	}
+
+	var customerResponses []*CustomerResponse
+	for _, customer := range customers {
+		customerResponses = append(customerResponses, customer.ToResponse(nil))
+	}
+
+	return &CustomerListResponse{
+		Customers: customerResponses,
+	}, nil
+}
+
 // Update updates a customer
 func (s *customerService) Update(ctx context.Context, id string, form *UpdateCustomerForm) (*CustomerResponse, error) {
 	// Get existing customer