Can delete group

lib/helpers/groups_helper.dart

@@ -238,11 +238,22 @@ class GroupsHelper {
           .execWithFilesAndThrow();
 
   /// Delete group logo
+  ///
+  /// Throws in case of error
   static Future<void> deleteLogo(int groupID) async =>
       await APIRequest(uri: "groups/delete_logo", needLogin: true)
           .addInt("id", groupID)
           .execWithThrow();
 
+  /// Delete a group
+  ///
+  /// Throws in case of error
+  static Future<void> deleteGroup(int groupID, String password) async =>
+      await APIRequest(uri: "groups/delete", needLogin: true)
+          .addInt("groupID", groupID)
+          .addString("password", password)
+          .execWithThrow();
+
   /// Turn an API entry into a group object
   Group _getGroupFromAPI(Map<String, dynamic> map) {
     return Group(

lib/ui/screens/group_settings_screen.dart

@@ -3,8 +3,10 @@ import 'dart:typed_data';
 import 'package:comunic/helpers/groups_helper.dart';
 import 'package:comunic/models/advanced_group_info.dart';
 import 'package:comunic/models/group.dart';
+import 'package:comunic/ui/dialogs/input_user_password_dialog.dart';
 import 'package:comunic/ui/dialogs/multi_choices_dialog.dart';
 import 'package:comunic/ui/dialogs/virtual_directory_dialog.dart';
+import 'package:comunic/ui/routes/main_route.dart';
 import 'package:comunic/ui/widgets/async_screen_widget.dart';
 import 'package:comunic/ui/widgets/comunic_back_button_widget.dart';
 import 'package:comunic/ui/widgets/group_icon_widget.dart';
@@ -81,7 +83,8 @@ class _GroupSettingsScreenState extends SafeState<GroupSettingsScreen> {
       sections: [
         _buildGeneralSection(),
         _buildAccessRestrictions(),
-        _buildGroupLogoArea()
+        _buildGroupLogoArea(),
+        _buildDangerZone(),
       ],
     );
   }
@@ -316,4 +319,38 @@ class _GroupSettingsScreenState extends SafeState<GroupSettingsScreen> {
       showSimpleSnack(context, tr("Could not delete group logo!"));
     }
   }
+
+  Widget _buildDangerZone() {
+    return SettingsSection(
+      title: tr("Danger zone"),
+      tiles: [
+        SettingsTile(
+          title: tr("Delete group"),
+          onTap: _deleteGroup,
+        ),
+      ],
+    );
+  }
+
+  /// Delete the group
+  void _deleteGroup() async {
+    try {
+      final password = await showUserPasswordDialog(context);
+
+      if (password == null) return;
+
+      if (!await showConfirmDialog(
+          context: context,
+          message: tr(
+              "Do you really want to delete this group ? All the posts related to it will be permanently deleted!")))
+        return;
+
+      await GroupsHelper.deleteGroup(_groupSettings.id, password);
+
+      MainController.of(context).popPage();
+    } catch (e, s) {
+      print("Could not delete the group! $e\n$s");
+      showSimpleSnack(context, tr("Could not delete the group"));
+    }
+  }
 }