ticket labels e ticket receipt

lib/features/tickets/data/ticket_repository.dart

@@ -192,12 +192,42 @@ class TicketRepository {
     }
   }
 
-  /// Salva il ticket con upsert
-  Future<TicketModel> saveTicket(TicketModel ticket) async {
+  Future<String> generateTicketReference(String companyId) async {
+    final response = await Supabase.instance.client.rpc(
+      'get_next_document_number',
+      params: {'p_company_id': companyId, 'p_doc_type': 'ticket'},
+    );
+
+    // Estraiamo i dati dal JSON
+    final int nextValue = response['next_value'];
+    final String prefix = response['prefix'] ?? '';
+
+    final year = DateTime.now().year; // 2026
+
+    // Formattazione con zeri iniziali (es. 000125)
+    final paddedNumber = nextValue.toString().padLeft(6, '0');
+
+    // Costruiamo la stringa. Se c'è un prefisso mette "TCK-2026-000125",
+    // altrimenti solo "2026-000125"
+    if (prefix.isNotEmpty) {
+      return '$prefix-$year-$paddedNumber';
+    } else {
+      return '$year-$paddedNumber';
+    }
+  }
+
+  /// Salva il ticket
+  Future<TicketModel> insertTicket(TicketModel ticket) async {
+    if (ticket.id != null) {
+      throw Exception('Impossibile creare un ticket esistente, id not null');
+    }
     try {
+      final ticketToSave = ticket.copyWith(
+        referenceId: await generateTicketReference(ticket.companyId),
+      );
       final response = await _supabase
           .from(_tableName)
-          .upsert(ticket.toMap())
+          .insert(ticketToSave.toMap())
           .select()
           .single();