Add validation to deleteThing endpoint to prevent deletion of things with associated tasks

internal/notifier/service/planner.go

@@ -48,6 +48,9 @@ func (n *NotificationPlanner) GenerateNotifications(c context.Context, chore *ch
 	var mt *chModel.NotificationMetadata
 	if err := json.Unmarshal([]byte(*chore.NotificationMetadata), &mt); err != nil {
 		log.Error("Error unmarshalling notification metadata", err)
+		return false
+	}
+	if chore.NextDueDate == nil {
 		return true
 	}
 	if mt.DueDate {

internal/thing/handler.go

@@ -261,6 +261,16 @@ func (h *Handler) DeleteThing(c *gin.Context) {
 		c.JSON(403, gin.H{"error": "Forbidden"})
 		return
 	}
+	//  confirm there are no chores associated with the thing:
+	thingChores, err := h.tRepo.GetThingChoresByThingId(c, thing.ID)
+	if err != nil {
+		c.JSON(500, gin.H{"error": "Unable to find tasks linked to this thing"})
+		return
+	}
+	if len(thingChores) > 0 {
+		c.JSON(405, gin.H{"error": "Unable to delete thing with associated tasks"})
+		return
+	}
 	if err := h.tRepo.DeleteThing(c, thingID); err != nil {
 		c.JSON(500, gin.H{"error": err.Error()})
 		return