Fixed Bitcoin Lightning for Tickets & prevented billing codes from being wiped if a temp billing code already exists

.gitignore

@@ -1,3 +1,4 @@
+old_main.py
 .idea
 .venv
 dist

gui/___main__.py

@@ -10379,7 +10379,7 @@ class CurrencySelectionPage(Page):
         button_info = [
             ("monero", (545, 75)),
             ("bitcoin", (545, 290)),
-            ("lightnering", (545, 180)),
+            ("lightning", (545, 180)), # going to ticket server as "lightning"
             ("litecoin", (545, 395))
         ]
 
@@ -11099,6 +11099,14 @@ class TicketCryptoPickerPage(Page):
         if error_code == 'already_exists' and not self.bypass_existing:
             self._prompt_wipe_existing(invoice)
             return
+
+        if error_code == 'billing_code_exists' and not self.bypass_existing:
+            temp_billing_code = getattr(invoice, 'temp_billing_code', None)
+            print(f"temp_billing_code is {temp_billing_code}")
+            if temp_billing_code:
+                self._prompt_wipe_billingcode(temp_billing_code)
+                return
+
         if error_code:
             msg = getattr(invoice, 'final_error_msg', None) or error_code
             self.update_status.update_status(f"Payment error: {msg}")
@@ -11123,6 +11131,20 @@ class TicketCryptoPickerPage(Page):
         else:
             self.update_status.update_status("Cancelled.")
 
+    def _prompt_wipe_billingcode(self, temp_billing_code):
+        msg = QMessageBox(self)
+        msg.setWindowTitle("Existing billing code found")
+        msg.setText("You already have a ticket billing code. Do you want to WIPE IT and start over? Hit NO if you ALREADY paid.")
+        msg.setStandardButtons(QMessageBox.StandardButton.Yes | QMessageBox.StandardButton.No)
+        result = msg.exec()
+        if result == QMessageBox.StandardButton.Yes:
+            self.bypass_existing = True
+            currency_btn = self.buttonGroup.checkedButton()
+            if currency_btn:
+                self.start_initiate_payment(currency_btn.property('currency'))
+        else:
+            self.update_status.update_status("Cancelled.")
+
     def on_error(self, msg):
         self.update_status.update_status(f"Payment error: {msg}")