Refactor Notification Service to Handle Optional Image and Link Fields

- Updated the Send method in the notification service to handle optional image and link fields more gracefully by using local variables.
- Improved logging to ensure that the correct values are sent in the notification context, enhancing clarity and maintainability of the notification process.
- This change ensures that nil values for image and link do not cause dereferencing issues, improving overall robustness of the notification sending logic.

internal/notification/service.go

@@ -50,12 +50,22 @@ func NewService(
 
 // Send sends a multiple notification
 func (s *notificationService) Send(ctx context.Context, req *NotificationRequest) error {
+	image := ""
+	if req.Image != nil {
+		image = *req.Image
+	}
+
+	link := ""
+	if req.Link != nil {
+		link = *req.Link
+	}
+
 	s.logger.Info("Sending notification", map[string]interface{}{
 		"recipient": req.Recipient,
 		"type":      req.Type,
 		"priority":  req.Priority,
-		"link":      req.Link,
-		"image":     req.Image,
+		"link":      link,
+		"image":     image,
 	})
 
 	if req.Target == TargetAudienceAllUsers || req.Target == TargetAudienceSpecificUsers {
@@ -73,8 +83,8 @@ func (s *notificationService) Send(ctx context.Context, req *NotificationRequest
 						Type:      string(req.Type),
 						Priority:  string(req.Priority),
 						EventType: notification.EventTypePush,
-						Link:      *req.Link,
-						Image:     *req.Image,
+						Link:      link,
+						Image:     image,
 						Metadata: map[string]any{
 							"tender": strings.TrimSpace(req.Tender),
 						},
@@ -96,8 +106,8 @@ func (s *notificationService) Send(ctx context.Context, req *NotificationRequest
 						Type:      string(req.Type),
 						Priority:  string(req.Priority),
 						EventType: notification.EventTypeEmail,
-						Link:      *req.Link,
-						Image:     *req.Image,
+						Link:      link,
+						Image:     image,
 						Metadata: map[string]any{
 							"tender": strings.TrimSpace(req.Tender),
 						},
@@ -124,8 +134,8 @@ func (s *notificationService) Send(ctx context.Context, req *NotificationRequest
 						Type:      string(req.Type),
 						Priority:  string(req.Priority),
 						EventType: notification.EventTypePush,
-						Link:      *req.Link,
-						Image:     *req.Image,
+						Link:      link,
+						Image:     image,
 						Methods: notification.NotificationMethods{
 							Push: v,
 						},
@@ -146,8 +156,8 @@ func (s *notificationService) Send(ctx context.Context, req *NotificationRequest
 						Type:      string(req.Type),
 						Priority:  string(req.Priority),
 						EventType: notification.EventTypeEmail,
-						Link:      *req.Link,
-						Image:     *req.Image,
+						Link:      link,
+						Image:     image,
 						Methods: notification.NotificationMethods{
 							Email: recipient.Email,
 						},