Add route for schedule group attachment from groups

src/backend/app/Http/Controllers/Web/Admin/GroupRelationController.php

@@ -7,6 +7,8 @@ namespace App\Http\Controllers\Web\Admin;
 use Illuminate\View\View;
 use App\Http\Controllers\Controller;
 use Illuminate\Http\RedirectResponse;
+use Source\UseCases\GroupSchedule\AddSchedulesToGroups\ApiPresenter as ScheduleGroupPresenter;
+use Source\UseCases\GroupSchedule\AddSchedulesToGroups\AddSchedulesToGroupsUseCase;
 use Source\UseCases\GroupSchedule\GetGroupSchedules\WebPresenter as GroupSchedulesPresenter;
 use Source\UseCases\GroupSchedule\GetGroupSchedules\GetGroupSchedulesUseCase;
 use Source\UseCases\GroupUser\GetGroupUsers\WebPresenter as GroupUsersPresenter;
@@ -74,8 +76,23 @@ class GroupRelationController extends Controller
 
     }
 
-    public function addSchedule(): RedirectResponse
+    /**
+     * @param string                                                                          $groupId
+     * @param \Source\UseCases\GroupSchedule\AddSchedulesToGroups\AddSchedulesToGroupsUseCase $schedulesToGroups
+     * @return \Illuminate\Http\RedirectResponse
+     * @throws \Illuminate\Validation\ValidationException
+     */
+    public function addSchedule(string $groupId, AddSchedulesToGroupsUseCase $schedulesToGroups): RedirectResponse
     {
+        $this->validate($this->request, [
+            'schedule' => 'required|string',
+        ]);
+
+        $presenter = new ScheduleGroupPresenter();
+        $schedulesToGroups->addGroup($groupId);
+        $schedulesToGroups->addSchedule($this->request->input('schedule'));
+        $schedulesToGroups->attach($presenter);
 
+        return redirect()->back()->with($presenter->getViewModel());
     }
 }