Widgets: Display an error if the IM is disabled

#2843

Riot/Assets/en.lproj/Vector.strings

@@ -775,6 +775,7 @@
 "widget_integration_missing_room_id" = "Missing room_id in request.";
 "widget_integration_missing_user_id" = "Missing user_id in request.";
 "widget_integration_room_not_visible" = "Room %@ is not visible.";
+"widget_integration_manager_disabled" = "You need to enable Integration Manager in settings";
 
 // Widget Picker
 "widget_picker_title" = "Integrations";

Riot/Generated/Strings.swift

@@ -3262,6 +3262,10 @@ internal enum VectorL10n {
   internal static var widgetIntegrationFailedToSendRequest: String { 
     return VectorL10n.tr("Vector", "widget_integration_failed_to_send_request") 
   }
+  /// You need to enable Integration Manager in settings
+  internal static var widgetIntegrationManagerDisabled: String { 
+    return VectorL10n.tr("Vector", "widget_integration_manager_disabled") 
+  }
   /// Missing room_id in request.
   internal static var widgetIntegrationMissingRoomId: String { 
     return VectorL10n.tr("Vector", "widget_integration_missing_room_id") 

Riot/Managers/Widgets/WidgetManager.h

@@ -56,6 +56,7 @@ typedef enum : NSUInteger
     WidgetManagerErrorCodeNotEnoughPower,
     WidgetManagerErrorCodeCreationFailed,
     WidgetManagerErrorCodeNoIntegrationsServerConfigured,
+    WidgetManagerErrorCodeDisabledIntegrationsServer,
     WidgetManagerErrorCodeFailedToConnectToIntegrationsServer,
     WidgetManagerErrorCodeTermsNotSigned
 }

Riot/Managers/Widgets/WidgetManager.m

@@ -269,6 +269,14 @@ NSString *const WidgetManagerErrorDomain = @"WidgetManagerErrorDomain";
         return nil;
     }
 
+    RiotSharedSettings *sharedSettings = [[RiotSharedSettings alloc] initWithSession:room.mxSession];
+    if (!sharedSettings.hasIntegrationProvisioningEnabled)
+    {
+        NSLog(@"[WidgetManager] createJitsiWidgetInRoom: Error: Disabled integration manager for user %@", userId);
+        failure(self.errorForDisabledIntegrationManager);
+        return nil;
+    }
+
     // Build data for a jitsi widget
     NSString *widgetId = [NSString stringWithFormat:@"%@_%@_%@", kWidgetTypeJitsi, room.mxSession.myUser.userId, @((uint64_t)([[NSDate date] timeIntervalSince1970] * 1000))];
 
@@ -791,4 +799,11 @@ NSString *const WidgetManagerErrorDomain = @"WidgetManagerErrorDomain";
                            userInfo:@{NSLocalizedDescriptionKey: NSLocalizedStringFromTable(@"widget_no_integrations_server_configured", @"Vector", nil)}];
 }
 
+- (NSError*)errorForDisabledIntegrationManager
+{
+    return [NSError errorWithDomain:WidgetManagerErrorDomain
+                               code:WidgetManagerErrorCodeDisabledIntegrationsServer
+                           userInfo:@{NSLocalizedDescriptionKey: NSLocalizedStringFromTable(@"widget_integration_manager_disabled", @"Vector", nil)}];
+}
+
 @end

Riot/Modules/Integrations/IntegrationManagerViewController.m

@@ -69,15 +69,22 @@ NSString *const kIntegrationManagerAddIntegrationScreen = @"add_integ";
     operation = nil;
 }
 
-- (void)viewDidLoad
+- (void)viewWillAppear:(BOOL)animated
 {
-    [super viewDidLoad];
+    [super viewWillAppear:animated];
 
     [self loadData];
 }
 
 - (void)loadData
 {
+    RiotSharedSettings *sharedSettings = [[RiotSharedSettings alloc] initWithSession:mxSession];
+    if (!sharedSettings.hasIntegrationProvisioningEnabled)
+    {
+        [self showDisabledIntegrationManagerError];
+        return;
+    }
+
     if (!self.URL && !operation)
     {
         [self startActivityIndicator];
@@ -706,6 +713,24 @@ NSString *const kIntegrationManagerAddIntegrationScreen = @"add_integ";
 }
 
 
+#pragma mark - Disabled Integrations
+
+- (void)showDisabledIntegrationManagerError
+{
+    NSString *message = NSLocalizedStringFromTable(@"widget_integration_manager_disabled", @"Vector", nil);
+    UIAlertController *alert = [UIAlertController alertControllerWithTitle:nil
+                                                                   message:message
+                                                            preferredStyle:UIAlertControllerStyleAlert];
+
+    [alert addAction:[UIAlertAction actionWithTitle:[NSBundle mxk_localizedStringForKey:@"ok"]
+                                              style:UIAlertActionStyleDefault
+                                            handler:^(UIAlertAction * action) {
+                                                [self withdrawViewControllerAnimated:YES completion:nil];
+                                            }]];
+
+    [self presentViewController:alert animated:YES completion:nil];
+}
+
 #pragma mark - Service terms
 
 - (void)presentTerms