FEATURE character validation

lib/features/document_scan/view/scanner_page.dart

@@ -180,6 +180,14 @@ class _ScannerPageState extends State<ScannerPage>
                                                       .of(context)!
                                                       .thisFieldIsRequired;
                                                 }
+                                                if (value?.trim().contains(
+                                                        RegExp(
+                                                            r'[<>:"/|?*]')) ??
+                                                    true) {
+                                                  return S
+                                                      .of(context)!
+                                                      .invalidFilenameCharacter;
+                                                }
                                                 return null;
                                               },
                                               decoration: InputDecoration(
@@ -326,7 +334,6 @@ class _ScannerPageState extends State<ScannerPage>
 
       await cubit.saveLocally(
           file.bytes, fileName, globalSettings.preferredLocaleSubtag);
-      _downloadFormKey.currentState!.save();
     } catch (error) {
       showGenericError(context, error);
     }

lib/l10n/intl_en.arb

@@ -815,5 +815,9 @@
   "export": "Export",
   "@export": {
     "description": "Label for button that exports scanned images to pdf (before upload)"
+  },
+  "invalidFilenameCharacter": "Invalid filename character found",
+  "@invalidFilenameCharacter": {
+    "description": "For validating filename in export dialogue"
   }
 }

lib/l10n/intl_pl.arb

@@ -815,5 +815,9 @@
   "export": "Eksport",
   "@export": {
     "description": "Label for button that exports scanned images to pdf (before upload)"
+  },
+  "invalidFilenameCharacter": "Znaleziono niedozwolony znak w nazwie pliku",
+  "@invalidFilenameCharacter": {
+    "description": "For validating filename in export dialogue"
   }
 }