add crud for node

internal/services/story_service/service.go

@@ -97,18 +97,44 @@ func (s *StoryService) GetPlace(code string) *Place {
 }
 
 func (s *StoryService) UpdatePlace(code string, node *GraphNode) error {
+	if code != "" && node.Code == "" {
+		for i := range s.story.Places {
+			if s.story.Places[i].Code == code {
+				s.story.Places = append(s.story.Places[:i], s.story.Places[i+1:]...)
+				break
+			}
+		}
+		s.Update()
+		return nil
+	}
+	nodeApplications := make([]*Application, 0, len(node.Applications))
+	for _, application := range node.Applications {
+		nodeApplications = append(
+			nodeApplications,
+			&Application{
+				Name: application.Name,
+			},
+		)
+	}
+	if code == "" && node.Code != "" {
+		s.story.Places = append(
+			s.story.Places,
+			&Place{
+				Code:         node.Code,
+				Name:         node.Name,
+				Text:         formatText(node.Text),
+				Applications: nodeApplications,
+			},
+		)
+		s.Update()
+		return nil
+	}
+	if code == "" || node.Code == "" {
+		return nil
+	}
 	update := false
 	for i := range s.story.Places {
 		if s.story.Places[i].Code == code {
-			nodeApplications := make([]*Application, 0, len(node.Applications))
-			for _, application := range node.Applications {
-				nodeApplications = append(
-					nodeApplications,
-					&Application{
-						Name: application.Name,
-					},
-				)
-			}
 			s.story.Places[i] = &Place{
 				Code:         node.Code,
 				Name:         node.Name,
@@ -122,15 +148,6 @@ func (s *StoryService) UpdatePlace(code string, node *GraphNode) error {
 	if !update {
 		for i := range s.story.Places {
 			if s.story.Places[i].Code == node.Code {
-				nodeApplications := make([]*Application, 0, len(node.Applications))
-				for _, application := range node.Applications {
-					nodeApplications = append(
-						nodeApplications,
-						&Application{
-							Name: application.Name,
-						},
-					)
-				}
 				s.story.Places[i] = &Place{
 					Code:         code,
 					Name:         node.Name,