Logical conditional query in where clause in Laravel ORM

Logical Condition in Where Laravel

Model::leftJoin('dummy_table', 'dummy_table.id', '=', 'mock_table.foreign_key')
	->where('dummy_table.status', 1)
  ->where(function ($query) {
      $users = Auth::user()->id;
      if ($users == '12') {
          $query->where('dummy_table.created_by', '=', Auth::user()->id)
      ->where('dummy_table.user_group', 'user');
      } else if (in_array($users, [1, 4, 6])) {
          $query->whereIn('dummy_table.created_by', [1, 4, 6]);
      } else {
          $query->where('dummy_table.created_by', Auth::user()->id)
      ->where('dummy_table.reg_created_at', Carbon::today());
      }
  });