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<?php
/**
 * @package     Joomla.Installation
 * @subpackage  Controller
 *
 * @copyright   (C) 2017 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Installation\Controller;

\defined('_JEXEC') or die;

use Joomla\CMS\Application\CMSApplication;
use Joomla\CMS\Factory;
use Joomla\CMS\Language\Text;
use Joomla\CMS\MVC\Factory\MVCFactoryInterface;
use Joomla\CMS\Session\Session;
use Joomla\Utilities\ArrayHelper;

/**
 * Default controller class for the Joomla Installer.
 *
 * @since  3.1
 */
class InstallationController extends JSONController
{
	/**
	 * Constructor.
	 *
	 * @param   array                     $config   An optional associative array of configuration settings.
	 * Recognized key values include 'name', 'default_task', 'model_path', and
	 * 'view_path' (this list is not meant to be comprehensive).
	 * @param   MVCFactoryInterface|null  $factory  The factory.
	 * @param   CMSApplication|null       $app      The JApplication for the dispatcher
	 * @param   \JInput|null              $input    Input
	 *
	 * @since   3.0
	 */
	public function __construct($config = array(), MVCFactoryInterface $factory = null, $app = null, $input = null)
	{
		parent::__construct($config, $factory, $app, $input);

$this->registerTask('populate1', 'populate');
		$this->registerTask('populate2', 'populate');
		$this->registerTask('populate3', 'populate');
		$this->registerTask('custom1', 'populate');
		$this->registerTask('custom2', 'populate');
		$this->registerTask('removeFolder', 'delete');
	}

/**
	 * Database check task.
	 *
	 * @return  void
	 *
	 * @since   4.0.0
	 */
	public function dbcheck()
	{
		$this->checkValidToken();

// Redirect to the page.
		$r = new \stdClass;
		$r->view = 'setup';

// Check the form
		/** @var \Joomla\CMS\Installation\Model\SetupModel $model */
		$model = $this->getModel('Setup');

if ($model->checkForm('setup') === false)
		{
			$this->app->enqueueMessage(Text::_('INSTL_DATABASE_VALIDATION_ERROR'), 'error');
			$r->validated = false;
			$this->sendJsonResponse($r);

return;
		}

$r->validated = $model->validateDbConnection();

$this->sendJsonResponse($r);
	}

/**
	 * Create DB task.
	 *
	 * @return  void
	 *
	 * @since   4.0.0
	 */
	public function create()
	{
		$this->checkValidToken();

$r = new \stdClass;

/** @var \Joomla\CMS\Installation\Model\DatabaseModel $databaseModel */
		$databaseModel = $this->getModel('Database');

// Create Db
		try
		{
			$dbCreated = $databaseModel->createDatabase();
		}
		catch (\RuntimeException $e)
		{
			$this->app->enqueueMessage($e->getMessage(), 'error');

$dbCreated = false;
		}

if (!$dbCreated)
		{
			$r->view = 'setup';
		}
		else
		{
			if (!$databaseModel->handleOldDatabase())
			{
				$r->view = 'setup';
			}
		}

$this->sendJsonResponse($r);
	}

/**
	 * Populate the database.
	 *
	 * @return  void
	 *
	 * @since   4.0.0
	 */
	public function populate()
	{
		$this->checkValidToken();
		$step = $this->getTask();
		/** @var \Joomla\CMS\Installation\Model\DatabaseModel $model */
		$model = $this->getModel('Database');

$r = new \stdClass;
		$db = $model->initialise();
		$files = [
			'populate1' => 'base',
			'populate2' => 'supports',
			'populate3' => 'extensions',
			'custom1' => 'localise',
			'custom2' => 'custom'
		];

$schema = $files[$step];
		$serverType = $db->getServerType();

if (in_array($step, ['custom1', 'custom2']) && !is_file('sql/' . $serverType . '/' . $schema . '.sql'))
		{
			$this->sendJsonResponse($r);

return;
		}

if (!isset($files[$step]))
		{
			$r->view = 'setup';
			Factory::getApplication()->enqueueMessage(Text::_('INSTL_SAMPLE_DATA_NOT_FOUND'), 'error');
			$this->sendJsonResponse($r);
		}

// Attempt to populate the database with the given file.
		if (!$model->createTables($schema))
		{
			$r->view = 'setup';
		}

$this->sendJsonResponse($r);
	}

/**
	 * Config task.
	 *
	 * @return  void
	 *
	 * @since   4.0.0
	 */
	public function config()
	{
		$this->checkValidToken();

/** @var \Joomla\CMS\Installation\Model\SetupModel $setUpModel */
		$setUpModel = $this->getModel('Setup');

// Get the options from the session
		$options = $setUpModel->getOptions();

$r = new \stdClass;
		$r->view = 'remove';

/** @var \Joomla\CMS\Installation\Model\ConfigurationModel $configurationModel */
		$configurationModel = $this->getModel('Configuration');

// Attempt to setup the configuration.
		if (!$configurationModel->setup($options))
		{
			$r->view = 'setup';
		}

$this->sendJsonResponse($r);
	}

/**
	 * Languages task.
	 *
	 * @return  void
	 *
	 * @since   4.0.0
	 */
	public function languages()
	{
		$this->checkValidToken();

// Get array of selected languages
		$lids = $this->input->get('cid', [], 'array');
		$lids = ArrayHelper::toInteger($lids, []);

if (!$lids)
		{
			// No languages have been selected
			$this->app->enqueueMessage(Text::_('INSTL_LANGUAGES_NO_LANGUAGE_SELECTED'), 'warning');
		}
		else
		{
			// Get the languages model.
			/** @var \Joomla\CMS\Installation\Model\LanguagesModel $model */
			$model = $this->getModel('Languages');

// Install selected languages
			$model->install($lids);
		}

// Redirect to the page.
		$r = new \stdClass;
		$r->view = 'remove';

$this->sendJsonResponse($r);
	}

/**
	 * Delete installation folder task.
	 *
	 * @return  void
	 *
	 * @since   4.0.0
	 */
	public function delete()
	{
		$this->checkValidToken();

/** @var \Joomla\CMS\Installation\Model\CleanupModel $model */
		$model = $this->getModel('Cleanup');

if (!$model->deleteInstallationFolder())
		{
			// We can't send a response with sendJsonResponse because our installation classes might not now exist
			$error = [
				'token' => Session::getFormToken(true),
				'error' => true,
				'data' => [
					'view' => 'remove'
				],
				'messages' => [
					'warning' => [
						Text::sprintf('INSTL_COMPLETE_ERROR_FOLDER_DELETE', 'installation')
					]
				]
			];

echo json_encode($error);

return;
		}

$this->app->getSession()->destroy();

// We can't send a response with sendJsonResponse because our installation classes now do not exist
		echo json_encode(['error' => false]);
	}
}