Can delete a single notification

src/controllers/notifications_controller.rs

@@ -58,6 +58,19 @@ pub fn mark_seen(r: &mut HttpRequestHandler) -> RequestResult {
     let notif_id = r.post_notif_id("notifID")?;
     let delete_similar = r.post_bool_opt("delete_similar", false);
 
-    // TODO : continue implementation
-    r.success("continue implementation")
+    // Check if we are targeting a precise notification or an undetermined number of similar
+    // notifications
+    if !delete_similar {
+        notifications_helper::delete(
+            &PartialNotification::new()
+            .set_id(notif_id)
+        )?;
+    }
+
+    else {
+        // TODO : implement me
+        unimplemented!();
+    }
+
+    r.success("Notification deleted")
 }