Can disconnect current user from all his devices

lib/helpers/account_helper.dart

@@ -139,4 +139,12 @@ class AccountHelper {
     if (_currentUserID == -1) throw "Current user ID has not been loaded yet!";
     return _currentUserID;
   }
+
+  /// Disconnect all the devices of the current user
+  ///
+  /// Throws in case of failure
+  static Future<void> disconnectAllDevices() async {
+    await APIRequest(uri: "account/disconnect_all_devices", needLogin: true)
+        .execWithThrow();
+  }
 }

lib/ui/routes/account_settings/account_security_settings.dart

@@ -1,3 +1,4 @@
+import 'package:comunic/helpers/account_helper.dart';
 import 'package:comunic/helpers/settings_helper.dart';
 import 'package:comunic/models/security_settings.dart';
 import 'package:comunic/ui/dialogs/input_new_password_dialog.dart';
@@ -49,6 +50,12 @@ class __AccountSecuritySettingsScreenBodyState
                   "Your security questions can be used to recover an access to your account when you loose your password..."),
               onTap: _changeSecurityQuestions,
             ),
+            SettingsTile(
+              title: tr("Disconnect all your devices"),
+              subtitle: tr(
+                  "Disconnect all your devices from Comunic, including the current one. Use this option if one of the device you use for Comunic was stolen."),
+              onTap: _disconnectAllDevices,
+            ),
           ],
         )
       ],
@@ -100,6 +107,23 @@ class __AccountSecuritySettingsScreenBodyState
       showSimpleSnack(context, tr("Could not update security questions!"));
     }
   }
+
+  /// Disconnect all devices
+  void _disconnectAllDevices() async {
+    try {
+      if (!await showConfirmDialog(
+          context: context,
+          message: tr(
+              "Do you really want to disconnect all your devices from Comunic ?")))
+        return;
+
+      await AccountHelper.disconnectAllDevices();
+    } catch (e, stack) {
+      print("Could not disconnect user on all devices! $e\n$stack");
+      showSimpleSnack(
+          context, tr("Could not disconnect you from all your devices!"));
+    }
+  }
 }
 
 class _SecurityQuestionsDialog extends StatefulWidget {