update: fixed location page buttons display

gui/v2/actions/locations.py

@@ -1,35 +0,0 @@
-def location_candidates(profile, preferred=None):
-    candidates = []
-    seen = set()
-
-    def add(val):
-        if val is None:
-            return
-        s = str(val).strip().lower().replace(' ', '_')
-        if s and s not in seen:
-            seen.add(s)
-            candidates.append(s)
-
-    if preferred:
-        add(preferred)
-
-    sources = []
-    try:
-        if profile and profile.connection and profile.connection.location:
-            sources.append(profile.connection.location)
-    except Exception:
-        pass
-    try:
-        if profile and profile.location:
-            sources.append(profile.location)
-    except Exception:
-        pass
-
-    for source in sources:
-        add(getattr(source, 'id', None))
-        add(getattr(source, 'country_name', None))
-        add(getattr(source, 'name', None))
-        add(getattr(source, 'code', None))
-        add(getattr(source, 'country_code', None))
-
-    return candidates

gui/v2/actions/operation_result_dispatch.py

@@ -0,0 +1,74 @@
+import inspect
+from enum import Enum
+from typing import Any
+
+from core.controllers.ConfigurationController import ConfigurationController
+from core.models.Configuration import ConnectionChoice
+from core.models.Result import ResultError
+from core.services.prepare_tickets import ticket_tracker
+
+
+DEFAULT_ENUM_MAP = {
+    ResultError.SUBSCRIPTION: (
+        ticket_tracker.wipe_one_ticket_sub,
+        {},
+    ),
+    ResultError.CONNECTION: (
+        ConfigurationController.set_connection_enum,
+        {'connection_enum': ConnectionChoice.SYSTEM},
+    ),
+    ResultError.INVALID_API_REPLY: None,
+}
+
+
+def has_function(enum_map: dict[Enum, Any], enum_key: Enum) -> bool:
+    action = enum_map.get(enum_key)
+    if action is None:
+        return False
+    function, _ = _normalize_action(action)
+    return callable(function)
+
+
+def error_dispatch(enum_map: dict[Enum, Any], enum_key: Enum, **kwargs: Any) -> Any:
+    if enum_key not in enum_map:
+        return None
+    action = enum_map[enum_key]
+    if action is None:
+        return None
+    function, default_kwargs = _normalize_action(action)
+    call_kwargs = dict(default_kwargs)
+    call_kwargs.update(kwargs)
+    return function(**_filter_kwargs(function, call_kwargs))
+
+
+def has_result_action(result, enum_map: dict[Enum, Any] | None = None) -> bool:
+    return has_function(enum_map or DEFAULT_ENUM_MAP, result.error_type)
+
+
+def dispatch_result_action(result, enum_map: dict[Enum, Any] | None = None, **kwargs: Any) -> Any:
+    return error_dispatch(enum_map or DEFAULT_ENUM_MAP, result.error_type, **kwargs)
+
+
+def _normalize_action(action: Any) -> tuple[Any, dict[str, Any]]:
+    if isinstance(action, tuple):
+        function = action[0]
+        if len(action) > 1 and isinstance(action[1], dict):
+            return function, action[1]
+        return function, {}
+    return action, {}
+
+
+def _filter_kwargs(function: Any, kwargs: dict[str, Any]) -> dict[str, Any]:
+    signature = inspect.signature(function)
+    parameters = signature.parameters
+    if any(param.kind == inspect.Parameter.VAR_KEYWORD for param in parameters.values()):
+        return kwargs
+    accepted = {
+        name
+        for name, param in parameters.items()
+        if param.kind in (
+            inspect.Parameter.POSITIONAL_OR_KEYWORD,
+            inspect.Parameter.KEYWORD_ONLY,
+        )
+    }
+    return {key: value for key, value in kwargs.items() if key in accepted}

gui/v2/actions/operation_results.py

@@ -0,0 +1,18 @@
+from core.models.Result import Result, ResultError
+
+
+def result_from_exception(exception: Exception, error_type: ResultError = ResultError.UNKNOWN) -> Result:
+    message = str(exception) or type(exception).__name__
+    return Result(valid=False, error_type=error_type, message=message)
+
+
+def result_from_payload(payload) -> Result:
+    if isinstance(payload, Result):
+        return payload
+    if isinstance(payload, Exception):
+        return result_from_exception(payload)
+    return Result(
+        valid=False,
+        error_type=ResultError.UNKNOWN,
+        message=str(payload) or 'The operation could not be completed.',
+    )

gui/v2/ui/builders/top_section.py

@@ -26,5 +26,5 @@ def create_top_section(parent, css_path):
         'marquee_timer': marquee_timer,
         'text_start_x': 15,
         'text_end_x': 420,
-        'text_width': 405,
+        'text_width': 500,
     }

gui/v2/ui/pages/location_page.py

@@ -1,6 +1,6 @@
 import os
 
-from PyQt6.QtWidgets import QApplication, QLabel, QPushButton, QButtonGroup
+from PyQt6.QtWidgets import QApplication, QLabel, QPushButton, QButtonGroup, QScrollArea, QWidget
 from PyQt6.QtGui import QPixmap, QIcon, QPainter, QColor, QFont, QTransform
 from PyQt6.QtCore import Qt
 from PyQt6 import QtCore
@@ -20,6 +20,7 @@ class LocationPage(Page):
         self.display.setGeometry(QtCore.QRect(5, 10, 390, 520))
         self.title.setGeometry(395, 40, 380, 40)
         self.title.setText("Pick a location")
+        self._setup_scroll_area()
 
         self.initial_display = QLabel(self)
         self.initial_display.setGeometry(5, 22, 355, 485)
@@ -70,13 +71,24 @@ class LocationPage(Page):
         self.refresh_protocol_location_visibility()
 
     def create_interface_elements(self, available_locations):
+        old_button_widget = self.scroll_area.takeWidget()
+        if old_button_widget is not None:
+            old_button_widget.deleteLater()
 
+        button_widget = QWidget()
+        button_widget.setStyleSheet("background: transparent;")
+        self._button_widget = button_widget
         self.buttonGroup = QButtonGroup(self)
         self.buttons = []
 
         for j, (object_type, icon_name, geometry) in enumerate(available_locations):
-            boton = object_type(self)
+            boton = object_type(button_widget)
-            boton.setGeometry(*geometry)
+            boton.setGeometry(
+                0,
+                0,
+                geometry[2],
+                geometry[3],
+            )
             boton.setIconSize(boton.size())
             boton.setCheckable(True)
 
@@ -123,11 +135,61 @@ class LocationPage(Page):
             boton.clicked.connect(
                 lambda checked, loc=icon_name: self.show_location(loc))
 
+        content_height = max(
+            (geometry[3] for _, _, geometry in available_locations),
+            default=0,
+        )
+        button_widget.setFixedSize(380, max(1, content_height))
+        self.scroll_area.setWidget(button_widget)
+        self._layout_visible_buttons()
+
+    def _setup_scroll_area(self):
+        self.scroll_area = QScrollArea(self)
+        self.scroll_area.setGeometry(405, 90, 385, 400)
+        self.scroll_area.setWidgetResizable(False)
+        self.scroll_area.setHorizontalScrollBarPolicy(
+            Qt.ScrollBarPolicy.ScrollBarAlwaysOff)
+        self.scroll_area.setStyleSheet("""
+            QScrollArea {
+                background: transparent;
+                border: none;
+            }
+            QScrollBar:vertical {
+                background: transparent;
+                border: none;
+                width: 10px;
+                margin: 0px 0px 0px 4px;
+            }
+            QScrollBar::handle:vertical {
+                background: #00ffff;
+                border-radius: 5px;
+                min-height: 20px;
+                margin: 1px 0px;
+            }
+            QScrollBar::add-line:vertical, QScrollBar::sub-line:vertical {
+                height: 0px;
+            }
+        """)
+
     def refresh_protocol_location_visibility(self):
         for button in self.buttons:
             location_key = getattr(button, 'location_icon_name', None)
             locations = self.connection_manager.get_location_info(location_key)
             button.setVisible(not locations or self._location_supports_selected_protocol(locations))
+        self._layout_visible_buttons()
+
+    def _layout_visible_buttons(self):
+        visible_buttons = [button for button in self.buttons if not button.isHidden()]
+        for index, button in enumerate(visible_buttons):
+            button.move((index % 2) * 195, (index // 2) * 105)
+
+        if hasattr(self, '_button_widget'):
+            button_height = self.buttons[0].height() if self.buttons else 0
+            row_count = (len(visible_buttons) + 1) // 2
+            self._button_widget.setFixedSize(
+                380,
+                max(1, row_count * 105 - 30 + button_height),
+            )
 
     def _current_protocol(self):
         profile_data = self.update_status.read_data()

gui/v2/ui/pages/menu_page.py

@@ -22,6 +22,8 @@ from core.models.system.SystemProfile import SystemProfile
 
 from gui.v2.infrastructure.setup_observers import ticket_observer
 from gui.v2.actions.database_health import GuiStorageDatabaseError
+from gui.v2.actions.operation_result_dispatch import has_result_action
+from gui.v2.actions.operation_results import result_from_payload
 from gui.v2.actions.profile_order import normalize_profile_order
 from gui.v2.actions.profile_status import is_profile_enabled_for_gui
 from gui.v2.ui.pages.Page import Page
@@ -29,6 +31,7 @@ from gui.v2.ui.pages.location_verification_page import LocationVerificationPage
 from gui.v2.ui.styles.styles import SCROLLBAR_CYAN_QSS
 from gui.v2.ui.popups.confirmation_popup import ConfirmationPopup
 from gui.v2.ui.popups.endpoint_verification_popup import EndpointVerificationPopup
+from gui.v2.ui.popups.operation_result_popup import OperationResultPopup
 from gui.v2.ui.popups.ticket_data_loss_popup import TicketDataLossPopup
 from gui.v2.workers.worker import Worker
 from gui.v2.workers.worker_thread import WorkerThread
@@ -1257,10 +1260,43 @@ class MenuPage(Page):
         self.worker.update_signal.connect(self.update_gui_main_thread)
         self.worker.change_page.connect(self.change_app_page)
         self.worker.ticket_data_loss.connect(self.show_ticket_data_loss_popup)
+        self.worker.operation_failed.connect(self.handle_operation_failure)
 
         thread = threading.Thread(target=self.worker.run)
         thread.start()
 
+    def handle_operation_failure(self, payload):
+        result = result_from_payload(payload)
+        if result.valid:
+            if result.message:
+                self.update_status.update_status(result.message)
+            return
+
+        message = result.message or result.user_message()
+        self.update_status.update_status(message)
+        self.boton_just.setEnabled(True)
+        self.boton_just_session.setEnabled(True)
+        self.disconnect_button.setEnabled(True)
+        self.disconnect_system_wide_button.setEnabled(True)
+
+        is_actionable = has_result_action(result)
+
+        self.popup = OperationResultPopup(
+            self,
+            message=message,
+            action_button_text="Yes" if is_actionable else "OK",
+            cancel_button_text="No" if is_actionable else None,
+            action_result=is_actionable,
+        )
+        self.popup.action_selected.connect(
+            lambda accepted: self.handle_operation_popup_action(accepted))
+        self.popup.show()
+
+    def handle_operation_popup_action(self, accepted):
+        if self.worker is None:
+            return
+        self.worker.handle_operation_popup_choice(accepted)
+
     def show_ticket_data_loss_popup(self, ticket_number, billing_code):
         self.custom_window.navigator.navigate("menu")
         self.update_status.update_status('Critical: invalid billing code from ticket.')

gui/v2/ui/pages/ticket_or_billing_choice_page.py

@@ -1,10 +1,8 @@
 from PyQt6.QtWidgets import QLabel, QListWidget, QListWidgetItem, QPushButton
 from PyQt6 import QtCore
 
-from core.controllers.ProfileController import ProfileController
 from core.controllers.tickets.UseTicketController import get_unused_tickets
 
-from gui.v2.actions.locations import location_candidates
 from gui.v2.infrastructure.setup_observers import ticket_observer
 from gui.v2.ui.pages.Page import Page
 
@@ -91,20 +89,14 @@ class TicketOrBillingChoicePage(Page):
             self.status_label.setText("Pick a ticket from the list first.")
             return
         which_ticket = item.data(QtCore.Qt.ItemDataRole.UserRole)
-        profile_id = self.update_status.current_profile_id
         try:
-            profile = ProfileController.get(int(profile_id))
+            profile_id = int(self.update_status.current_profile_id)
-        except Exception:
+        except (TypeError, ValueError):
-            profile = None
+            self.status_label.setText("Could not determine profile.")
-        candidates = location_candidates(profile)
-        if not candidates:
-            self.status_label.setText("Could not determine profile location.")
             return
         profile_data = {
-            'id': int(profile_id),
+            'id': profile_id,
-            'use_ticket': which_ticket,
+            'use_ticket': which_ticket
-            'ticket_location': candidates[0],
-            'profile': profile
         }
         menu_page = self.custom_window.navigator.get_cached("menu")
         if menu_page:

gui/v2/ui/popups/operation_result_popup.py

@@ -0,0 +1,200 @@
+from PyQt6.QtCore import Qt, QTimer, pyqtSignal
+from PyQt6.QtGui import QFont, QGuiApplication
+from PyQt6.QtWidgets import (
+    QDialog,
+    QFrame,
+    QHBoxLayout,
+    QLabel,
+    QPushButton,
+    QScrollArea,
+    QVBoxLayout,
+    QWidget,
+)
+
+from gui.v2.ui.styles.styles import (
+    POPUP_ACTION_BUTTON_RED_QSS,
+    POPUP_BG_QSS,
+    POPUP_CANCEL_BUTTON_QSS,
+)
+
+
+class OperationResultPopup(QDialog):
+    action_selected = pyqtSignal(bool)
+
+    def __init__(self, parent=None, message="", title="Operation Failed", action_button_text="Yes", cancel_button_text="No", action_result=True):
+        super().__init__(parent)
+        self.parent_window = parent
+        self.title_text = title or "Operation Failed"
+        self.message = message or "The operation could not be completed."
+        self.action_button_text = action_button_text
+        self.cancel_button_text = cancel_button_text
+        self.action_result = action_result
+        self._completed = False
+        self._use_parent_local_geometry = QGuiApplication.platformName().lower().startswith("wayland")
+        self.initUI()
+
+    def initUI(self):
+        self.setFixedSize(560, 300)
+        if self._use_parent_local_geometry:
+            if self.parent_window is not None:
+                self.setParent(self.parent_window)
+            self.setWindowFlags(Qt.WindowType.Widget)
+        else:
+            self.setWindowFlags(Qt.WindowType.Dialog | Qt.WindowType.FramelessWindowHint)
+        self.setAttribute(Qt.WidgetAttribute.WA_TranslucentBackground)
+
+        outer = QVBoxLayout(self)
+        outer.setContentsMargins(0, 0, 0, 0)
+
+        bg_widget = QWidget(self)
+        bg_widget.setStyleSheet(POPUP_BG_QSS)
+        outer.addWidget(bg_widget)
+
+        content_layout = QVBoxLayout(bg_widget)
+        content_layout.setContentsMargins(22, 14, 22, 18)
+        content_layout.setSpacing(12)
+
+        top_row = QHBoxLayout()
+        top_row.setContentsMargins(0, 0, 0, 0)
+        top_row.setSpacing(10)
+
+        title_label = QLabel(self.title_text)
+        title_label.setFont(QFont("Arial", 18, QFont.Weight.Bold))
+        title_label.setStyleSheet("color: #d62828; background: transparent; border: none;")
+        title_label.setAlignment(Qt.AlignmentFlag.AlignLeft | Qt.AlignmentFlag.AlignVCenter)
+        title_label.setMinimumWidth(0)
+        top_row.addWidget(title_label, 1)
+
+        close_button = QPushButton("X")
+        close_button.setFixedSize(36, 36)
+        close_button.setFont(QFont("Arial", 14, QFont.Weight.Bold))
+        close_button.setStyleSheet("""
+            QPushButton {
+                background-color: transparent;
+                color: #444444;
+                font-size: 18px;
+                font-weight: 900;
+                border: none;
+            }
+            QPushButton:hover {
+                color: #d62828;
+            }
+        """)
+        close_button.clicked.connect(lambda: self._choose(False))
+        top_row.addWidget(close_button, 0, Qt.AlignmentFlag.AlignRight | Qt.AlignmentFlag.AlignTop)
+
+        content_layout.addLayout(top_row)
+
+        scroll_area = QScrollArea()
+        scroll_area.setWidgetResizable(True)
+        scroll_area.setFrameShape(QFrame.Shape.NoFrame)
+        scroll_area.setStyleSheet("background: transparent; border: none;")
+        content_layout.addWidget(scroll_area, 1)
+
+        scroll_content = QWidget()
+        scroll_content.setStyleSheet("background: transparent; border: none;")
+        scroll_layout = QVBoxLayout(scroll_content)
+        scroll_layout.setContentsMargins(0, 0, 0, 0)
+
+        message_label = QLabel(self.message)
+        message_label.setFont(QFont("Arial", 12))
+        message_label.setStyleSheet("color: #333333; background: transparent; border: none;")
+        message_label.setWordWrap(True)
+        message_label.setTextInteractionFlags(Qt.TextInteractionFlag.TextSelectableByMouse)
+        message_label.setAlignment(Qt.AlignmentFlag.AlignLeft | Qt.AlignmentFlag.AlignTop)
+        scroll_layout.addWidget(message_label)
+        scroll_layout.addStretch()
+        scroll_area.setWidget(scroll_content)
+
+        button_row = QHBoxLayout()
+        button_row.addStretch()
+
+        if self.cancel_button_text is not None:
+            cancel_button = QPushButton(self.cancel_button_text)
+            cancel_button.setFixedSize(max(110, min(180, 22 + len(self.cancel_button_text) * 8)), 42)
+            cancel_button.setFont(QFont("Arial", 11, QFont.Weight.Bold))
+            cancel_button.setCursor(Qt.CursorShape.PointingHandCursor)
+            cancel_button.setStyleSheet(POPUP_CANCEL_BUTTON_QSS)
+            cancel_button.clicked.connect(lambda: self._choose(False))
+            button_row.addWidget(cancel_button)
+
+        action_button = QPushButton(self.action_button_text)
+        action_button.setFixedSize(max(110, min(180, 22 + len(self.action_button_text) * 8)), 42)
+        action_button.setFont(QFont("Arial", 11, QFont.Weight.Bold))
+        action_button.setCursor(Qt.CursorShape.PointingHandCursor)
+        action_button.setStyleSheet(POPUP_ACTION_BUTTON_RED_QSS)
+        action_button.clicked.connect(lambda: self._choose(self.action_result))
+        button_row.addWidget(action_button)
+        content_layout.addLayout(button_row)
+
+        if not self._use_parent_local_geometry:
+            self.setWindowModality(Qt.WindowModality.ApplicationModal)
+
+    def _choose(self, accepted):
+        if self._completed:
+            return
+        self._completed = True
+        self.action_selected.emit(accepted)
+        self.accept()
+
+    def closeEvent(self, event):
+        if not self._completed:
+            self._completed = True
+            self.action_selected.emit(False)
+        event.accept()
+
+    def show(self):
+        self._center_on_parent()
+        super().show()
+
+    def showEvent(self, event):
+        super().showEvent(event)
+        self._center_on_parent()
+        QTimer.singleShot(0, self._center_on_parent)
+
+    def _center_on_parent(self):
+        parent = self.parent_window
+        if parent is None:
+            return
+        try:
+            if not hasattr(parent, 'mapToGlobal') or not hasattr(parent, 'rect'):
+                return
+            parent_local_rect = parent.rect()
+            if parent_local_rect.isEmpty():
+                return
+            my_size = self.size()
+            if my_size.isEmpty() or my_size.width() <= 0 or my_size.height() <= 0:
+                my_size = self.sizeHint()
+            if self._use_parent_local_geometry:
+                target_x = parent_local_rect.x() + (parent_local_rect.width() - my_size.width()) // 2
+                target_y = parent_local_rect.y() + (parent_local_rect.height() - my_size.height()) // 2
+                target_x = max(parent_local_rect.left(), min(target_x, parent_local_rect.right() - my_size.width() + 1))
+                target_y = max(parent_local_rect.top(), min(target_y, parent_local_rect.bottom() - my_size.height() + 1))
+            else:
+                parent_center = parent.mapToGlobal(parent_local_rect.center())
+                target_x = parent_center.x() - my_size.width() // 2
+                target_y = parent_center.y() - my_size.height() // 2
+                screen = None
+                if hasattr(parent, 'screen'):
+                    try:
+                        screen = parent.screen()
+                    except Exception:
+                        screen = None
+                if screen is not None:
+                    avail = screen.availableGeometry()
+                    target_x = max(avail.left(), min(target_x, avail.right() - my_size.width()))
+                    target_y = max(avail.top(), min(target_y, avail.bottom() - my_size.height()))
+            self.setGeometry(target_x, target_y, my_size.width(), my_size.height())
+            if self._use_parent_local_geometry:
+                self.raise_()
+                self.setFocus(Qt.FocusReason.PopupFocusReason)
+        except Exception:
+            pass
+
+    def mousePressEvent(self, event):
+        self.oldPos = event.globalPosition().toPoint()
+
+    def mouseMoveEvent(self, event):
+        delta = event.globalPosition().toPoint() - self.oldPos
+        self.move(self.x() + delta.x(), self.y() + delta.y())
+        self.oldPos = event.globalPosition().toPoint()

gui/v2/workers/ticketing_worker_thread.py

@@ -7,7 +7,6 @@ from core.controllers.tickets.FailedVerificationController import (
     evaluate_if_its_the_key,
     prepare_tickets_with_saved_blind_sigs,
 )
-from core.controllers.tickets.UseTicketController import use_ticket
 
 from gui.v2.infrastructure.setup_observers import (
     connection_observer,
@@ -22,7 +21,6 @@ class TicketingWorkerThread(QThread):
     not_paid = pyqtSignal()
     paid_check_failed = pyqtSignal(str)
     prep_done = pyqtSignal(object)
-    use_done = pyqtSignal(object)
     failed_verification_evaluated = pyqtSignal(object)
     saved_blind_prep_done = pyqtSignal(object)
     error = pyqtSignal(str)
@@ -71,14 +69,5 @@ class TicketingWorkerThread(QThread):
             elif self.action == 'PREPARE_SAVED_BLIND_SIGS':
                 result = prepare_tickets_with_saved_blind_sigs(ticket_observer, connection_observer)
                 self.saved_blind_prep_done.emit(result)
-            elif self.action == 'USE_TICKET':
-                result = use_ticket(
-                    which_ticket=self.params['which_ticket'],
-                    which_location=self.params['which_location'],
-                    ticket_observer=ticket_observer,
-                    connection_observer=connection_observer,
-                    profile=self.params['profile']
-                )
-                self.use_done.emit(result)
         except Exception as e:
             self.error.emit(str(e))

gui/v2/workers/worker.py

@@ -24,8 +24,9 @@ from core.Errors import (
     UnsupportedApplicationVersionError,
 )
 
-from gui.v2.actions.locations import location_candidates
 from gui.v2.actions.database_health import GuiStorageDatabaseError
+from gui.v2.actions.operation_result_dispatch import dispatch_result_action
+from gui.v2.actions.operation_results import result_from_exception
 from gui.v2.infrastructure.screen_size import get_max_screensize
 from gui.v2.infrastructure.setup_observers import (
     application_version_observer,
@@ -39,6 +40,7 @@ class Worker(QObject):
     update_signal = pyqtSignal(str, bool, int, int, str)
     change_page = pyqtSignal(str, bool)
     ticket_data_loss = pyqtSignal(str, str)
+    operation_failed = pyqtSignal(object)
 
     def __init__(self, profile_data):
         self.profile_data = profile_data
@@ -50,6 +52,8 @@ class Worker(QObject):
         self.profile_type = None
         self._ticket_error_emitted = False
         self._consumed_ticket = None
+        self._pending_operation_result = None
+        self._pending_operation_kwargs = {}
 
     def run(self):
         try:
@@ -70,8 +74,7 @@ class Worker(QObject):
 
         if 'use_ticket' in self.profile_data:
             ticket_billing_code = self._consume_ticket(
-                self.profile_data['use_ticket'],
+                self.profile_data['use_ticket'])
-                self.profile_data.get('ticket_location'))
             if ticket_billing_code is None:
                 return
             self.profile_data['billing_code'] = ticket_billing_code
@@ -84,18 +87,20 @@ class Worker(QObject):
                     self.profile_data['billing_code'] = ticket_billing_code
 
         if 'billing_code' in self.profile_data:
+            try:
                 subscription = SubscriptionController.get(
                     self.profile_data['billing_code'], connection_observer=connection_observer)
+            except Exception as e:
+                if self._consumed_ticket is not None:
+                    self._emit_subscription_lookup_failure(exception=e)
+                    return
+                subscription = None
             if subscription is not None:
                 ProfileController.attach_subscription(
                     self.profile, subscription)
             else:
                 if self._consumed_ticket is not None:
-                    self._ticket_error_emitted = True
+                    self._emit_subscription_lookup_failure()
-                    self.ticket_data_loss.emit(
-                        self._consumed_ticket,
-                        str(self.profile_data.get('billing_code', '')),
-                    )
                     return
                 self.change_page.emit('The billing code is invalid.', True)
                 return
@@ -108,13 +113,19 @@ class Worker(QObject):
                     ignore_exceptions.append(ProfileStateConflictError)
                 ignore_tuple = tuple(ignore_exceptions)
                 max_resolution = get_max_screensize()
-                ProfileController.enable(self.profile, ignore=ignore_tuple, profile_observer=profile_observer,
+                enable_result = ProfileController.enable(self.profile, ignore=ignore_tuple, profile_observer=profile_observer,
                                                          application_version_observer=application_version_observer,
                                                          connection_observer=connection_observer, ticket_observer=ticket_observer, max_resolution=max_resolution)
+                if isinstance(enable_result, Result) and not enable_result.valid:
+                    self._emit_operation_failure(enable_result)
+                    return
             except EndpointVerificationError:
                 self.update_signal.emit(
                     "ENDPOINT_VERIFICATION_ERROR", False, self.profile_data['id'], None, None)
             except (InvalidSubscriptionError, MissingSubscriptionError) as e:
+                if self._consumed_ticket is not None:
+                    self._emit_subscription_lookup_failure(exception=e)
+                else:
                     self.change_page.emit(
                         f"Subscription missing or invalid for profile {self.profile_data['id']}", True)
             except ProfileActivationError:
@@ -170,9 +181,6 @@ class Worker(QObject):
 
         return None
 
-    def _location_candidates(self, preferred=None):
-        return location_candidates(self.profile, preferred)
-
     def _profile_has_valid_subscription(self):
         try:
             sub = getattr(self.profile, 'subscription', None)
@@ -201,55 +209,137 @@ class Worker(QObject):
         try:
             print("using a random ticket from GUI...")
             which_ticket, error_msg = do_we_use_a_random_ticket(ticket_observer)
-        except Exception:
+        except Exception as e:
+            self._emit_ticket_failure(None, exception=e)
             return None
         if error_msg:
-            self._ticket_error_emitted = True
+            self._emit_ticket_failure(
-            self.change_page.emit(f'Ticket use failed: {error_msg}', True)
+                None,
+                result=Result(
+                    valid=False,
+                    error_type=ResultError.TICKET,
+                    message=f'Ticket use failed: {error_msg}',
+                ),
+            )
             return None
         if which_ticket is None or which_ticket == 'error':
             return None
-        return self._consume_ticket(which_ticket, None)
+        return self._consume_ticket(which_ticket)
 
-    def _consume_ticket(self, which_ticket, which_location):
+    def _ticket_location_id(self):
-        candidates = self._location_candidates(preferred=which_location)
+        location = getattr(self.profile, 'location', None)
-        if not candidates:
+        location_id = getattr(location, 'id', None)
-            self._ticket_error_emitted = True
+        if location_id is None:
-            self.change_page.emit('Could not determine profile location for ticket use.', True)
+            return None
+        if isinstance(location_id, str):
+            location_id = location_id.strip()
+        if location_id == '':
+            return None
+        try:
+            return int(location_id)
+        except (TypeError, ValueError):
+            return None
+
+    def _emit_ticket_failure(self, which_ticket, result=None, message=None, exception=None):
+        self._ticket_error_emitted = True
+        if exception is not None:
+            result = result_from_exception(exception)
+        elif result is None:
+            result = Result(
+                valid=False,
+                error_type=ResultError.UNKNOWN,
+                message=message or 'Ticket use failed.',
+            )
+        self._emit_operation_failure(result, which_ticket=which_ticket)
+
+    def _emit_operation_failure(self, result, **kwargs):
+        self._pending_operation_result = result
+        self._pending_operation_kwargs = {
+            key: value for key, value in kwargs.items()
+            if value is not None
+        }
+        self.operation_failed.emit(result)
+
+    def handle_operation_popup_choice(self, accepted):
+        if not accepted:
+            return None
+        if not isinstance(self._pending_operation_result, Result):
+            return None
+        return dispatch_result_action(
+            self._pending_operation_result,
+            **self._pending_operation_kwargs,
+        )
+
+    def _emit_subscription_lookup_failure(self, exception=None):
+        message = (
+            "Ticket was accepted, but the subscription details could not be "
+            "retrieved. Check your connection and try again."
+        )
+        if exception is not None:
+            error_text = str(exception)
+            if error_text:
+                message = f"{message} {error_text}"
+        self._emit_ticket_failure(
+            self._consumed_ticket,
+            result=Result(
+                valid=False,
+                error_type=ResultError.CONNECTION,
+                message=message,
+            ),
+        )
+
+    def _consume_ticket(self, which_ticket):
+        which_location = self._ticket_location_id()
+        if which_location is None:
+            self._emit_ticket_failure(
+                which_ticket,
+                result=Result(
+                    valid=False,
+                    error_type=ResultError.MISSING_DATA,
+                    message='Could not determine profile location for ticket use.',
+                ),
+            )
             return None
 
-        last_msg = None
-        for cand in candidates:
         try:
             outcome = use_ticket(
                 which_ticket=which_ticket,
-                    which_location=cand,
+                which_location=which_location,
                 ticket_observer=ticket_observer,
                 connection_observer=connection_observer,
                 profile=self.profile
             )
         except Exception as e:
-                last_msg = str(e)
+            self._emit_ticket_failure(which_ticket, exception=e)
-                continue
-            if not isinstance(outcome, dict):
-                last_msg = 'invalid_response'
-                continue
-            billing_code = outcome.get('billing_code')
-            if outcome.get('valid') and billing_code:
-                self._consumed_ticket = str(which_ticket)
-                return billing_code
-            if billing_code:
-                self._consumed_ticket = str(which_ticket)
-                return billing_code
-            msg = outcome.get('message', 'failed')
-            last_msg = msg
-            if msg != 'invalid_location':
-                self._ticket_error_emitted = True
-                self.change_page.emit(f'Ticket use failed: {msg}', True)
             return None
 
-        self._ticket_error_emitted = True
+        if not isinstance(outcome, Result):
-        self.change_page.emit(f'Ticket use failed: {last_msg or "no valid location"}', True)
+            self._emit_ticket_failure(
+                which_ticket,
+                result=Result(
+                    valid=False,
+                    error_type=ResultError.INVALID_API_REPLY,
+                    message=f'use_ticket returned {type(outcome).__name__}, expected Result.',
+                ),
+            )
+            return None
+
+        if outcome.valid:
+            billing_code = outcome.data
+            if not billing_code:
+                self._emit_ticket_failure(
+                    which_ticket,
+                    result=Result(
+                        valid=False,
+                        error_type=ResultError.INVALID_API_REPLY,
+                        message='Ticket use succeeded but no billing code was returned.',
+                    ),
+                )
+                return None
+            self._consumed_ticket = str(which_ticket)
+            return billing_code
+
+        self._emit_ticket_failure(which_ticket, result=outcome)
         return None
 
     def handle_profile_status(self, profile, is_enabled):