feat-add-files-from-qr (#8)

Reviewed-on: http://catelliub.zapto.org:3000/brontomark/flux/pulls/8
Co-authored-by: Mark M2 Macbook <marco@catelli.it>
Co-committed-by: Mark M2 Macbook <marco@catelli.it>

lib/core/widgets/image_viewer_widget.dart

@@ -1,6 +1,6 @@
 import 'dart:typed_data';
 import 'package:flutter/material.dart';
-import 'package:supabase_flutter/supabase_flutter.dart'; // <--- AGGIUNGI QUESTO
+import 'package:flux/core/utils/functions.dart';
 
 class ImageViewerWidget extends StatelessWidget {
   final String? storagePath; // ATTENZIONE: Ora contiene lo storagePath!
@@ -12,13 +12,6 @@ class ImageViewerWidget extends StatelessWidget {
         'Errore: Devi fornire un Path valido o i bytes del file!',
       );
 
-  // Funzione che chiede le chiavi a Supabase
-  Future<String> _getSignedUrl() async {
-    return await Supabase.instance.client.storage
-        .from('documents')
-        .createSignedUrl(storagePath!, 60); // Link che si autodistrugge in 60s
-  }
-
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -37,7 +30,7 @@ class ImageViewerWidget extends StatelessWidget {
           child: bytes != null
               ? Image.memory(bytes!)
               : FutureBuilder<String>(
-                  future: _getSignedUrl(),
+                  future: getSignedUrl(storagePath!),
                   builder: (context, snapshot) {
                     if (snapshot.connectionState == ConnectionState.waiting) {
                       return const CircularProgressIndicator();