protected function activateAcount()
	{
		$this->strTemplate = 'mod_message';
		$this->Template = new FrontendTemplate($this->strTemplate);

		/** @var OptIn $optIn */
		$optIn = System::getContainer()->get('contao.opt-in');

		// Find an unconfirmed token with only one related record
		if ((!$optInToken = $optIn->find(Input::get('token'))) || !$optInToken->isValid() || \count($arrRelated = $optInToken->getRelatedRecords()) != 1 || key($arrRelated) != 'tl_member' || \count($arrIds = current($arrRelated)) != 1 || (!$objMember = MemberModel::findByPk($arrIds[0])))
		{
			$this->Template->type = 'error';
			$this->Template->message = $GLOBALS['TL_LANG']['MSC']['invalidToken'];

			return;
		}

		if ($optInToken->isConfirmed())
		{
			$this->Template->type = 'error';
			$this->Template->message = $GLOBALS['TL_LANG']['MSC']['tokenConfirmed'];

			return;
		}

		if ($optInToken->getEmail() != $objMember->email)
		{
			$this->Template->type = 'error';
			$this->Template->message = $GLOBALS['TL_LANG']['MSC']['tokenEmailMismatch'];

			return;
		}

		$objMember->disable = '';
		$objMember->save();

		$optInToken->confirm();

		// HOOK: post activation callback
		if (isset($GLOBALS['TL_HOOKS']['activateAccount']) && \is_array($GLOBALS['TL_HOOKS']['activateAccount']))
		{
			foreach ($GLOBALS['TL_HOOKS']['activateAccount'] as $callback)
			{
				$this->import($callback[0]);
				$this->{$callback[0]}->{$callback[1]}($objMember, $this);
			}
		}

		// Log activity
		$this->log('User account ID ' . $objMember->id . ' (' . Idna::decodeEmail($objMember->email) . ') has been activated', __METHOD__, TL_ACCESS);

		// Redirect to the jumpTo page
		if (($objTarget = $this->objModel->getRelated('reg_jumpTo')) instanceof PageModel)
		{
			/** @var PageModel $objTarget */
			$this->redirect($objTarget->getFrontendUrl());
		}

		// Confirm activation
		$this->Template->type = 'confirm';
		$this->Template->message = $GLOBALS['TL_LANG']['MSC']['accountActivated'];
	}