rename and delete api calls

lib/api_service.dart

@@ -122,8 +122,8 @@ class ApiService {
         if (response.statusCode == 200) {
           content += response.body;
           try {
-            List<AttachmentInfo> attachments = await getAttachmentsInfo(
-                emailFolder, id);
+            List<AttachmentInfo> attachments =
+                await getAttachmentsInfo(emailFolder, id);
             for (var attachment in attachments) {
               //TODO: for each attachment creaate at the bottom a widget for each individual one
               threadAttachments
@@ -164,6 +164,31 @@ class ApiService {
 
     Map<String, String> requestBody = {'name': folderName};
 
+    try {
+      var response = await http.post(
+        url,
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: jsonEncode(requestBody),
+      );
+      if (response.statusCode == 200) {
+        print('response body: ${response.body}');
+      } else {
+        print('Error: ${response.statusCode}, response body: ${response.body}');
+      } 
+    } catch (e) {
+      print('error making post req: $e');
+    }
+  }
+
+  Future<void> renameFolder(String oldFolder, String newFolder) async {
+    var url = Uri.http('$ip:$port', 'rename_folder');
+    Map<String, String> requestBody = {
+      'old_name': oldFolder,
+      'new_name': newFolder,
+    };
+
     try {
       var response = await http.post(
         url,
@@ -268,7 +293,6 @@ class ApiService {
     //leads to problems as for a) the html is added one right after the other in one iframe, b)
     // if it was multiple iframes then the scrolling to jump would not work as expected
 
-    
     print("marker called");
     // JavaScript code embedded as a string
     String jsCode = '''
@@ -379,7 +403,7 @@ class _EmailViewState extends State<EmailView> {
     String currentContent = widget.emailContent;
     viewTypeId = "iframe-${DateTime.now().millisecondsSinceEpoch}";
     _registerViewFactory(currentContent);
-    _markerPositionsFuture = ApiService().getMarkerPosition(); 
+    _markerPositionsFuture = ApiService().getMarkerPosition();
   }
 
   void _registerViewFactory(String currentContent) {