Added api for sending feedback

lib/view/pages/more/feedback/feedbackDialog.dart

@@ -1,5 +1,9 @@
 
 import 'package:flutter/material.dart';
+import 'package:marianum_mobile/api/mhsl/server/feedback/addFeedback.dart';
+import 'package:marianum_mobile/api/mhsl/server/feedback/addFeedbackParams.dart';
+import 'package:marianum_mobile/model/accountData.dart';
+import 'package:package_info/package_info.dart';
 
 class FeedbackDialog extends StatefulWidget {
   const FeedbackDialog({super.key});
@@ -9,21 +13,25 @@ class FeedbackDialog extends StatefulWidget {
 }
 
 class _FeedbackDialogState extends State<FeedbackDialog> {
+  final TextEditingController _feedbackInput = TextEditingController();
+  String? _error;
+
   @override
   Widget build(BuildContext context) {
     return AlertDialog(
 
       title: const Text("Feedback"),
-      content: const Column(
+      content: Column(
         mainAxisSize: MainAxisSize.min,
         children: [
-          Text("Feedback, Anregungen, Ideen, Fehler und Verbesserungen"),
-          SizedBox(height: 10),
-          Text("Bitte gib keine geheimen Daten wie z.B. Passwörter weiter.", style: TextStyle(fontSize: 10)),
-          SizedBox(height: 10),
+          const Text("Feedback, Anregungen, Ideen, Fehler und Verbesserungen"),
+          const SizedBox(height: 10),
+          const Text("Bitte gib keine geheimen Daten wie z.B. Passwörter weiter.", style: TextStyle(fontSize: 10)),
+          const SizedBox(height: 10),
           TextField(
+            controller: _feedbackInput,
             autofocus: true,
-            decoration: InputDecoration(
+            decoration: const InputDecoration(
               border: OutlineInputBorder(),
               label: Text("Feedback und Verbesserungen")
             ),
@@ -31,14 +39,31 @@ class _FeedbackDialogState extends State<FeedbackDialog> {
             // expands: true,
             minLines: 3,
             maxLines: 5,
+          ),
+          Visibility(
+            visible: _error != null,
+            child: Text("Senden fehlgeschlagen: $_error", style: const TextStyle(color: Colors.red))
           )
         ],
       ),
       actions: [
         TextButton(onPressed: () => Navigator.of(context).pop(), child: const Text("Abbrechen")),
         TextButton(
-          onPressed: () {
-
+          onPressed: () async {
+            AddFeedback(
+              AddFeedbackParams(
+                user: AccountData().getUserId(),
+                feedback: _feedbackInput.text,
+                appVersion: int.parse((await PackageInfo.fromPlatform()).buildNumber)
+              )
+            )
+            .run()
+            .then((value) => Navigator.of(context).pop())
+            .catchError((error, trace) {
+                setState(() {
+                  _error = error.toString();
+                });
+            });
           },
           child: const Text("Senden"),
         )