<?php
/*----------------------------------------------------------------------------------|  www.vdm.io  |----/
				Agence Agerix 
/-------------------------------------------------------------------------------------------------------/

	@version		1.x.x
	@build			2nd June, 2022
	@created		12th December, 2020
	@package		Extension Distributor
	@subpackage		extension.php
	@author			Emmanuel Danan <https://agerix.fr>	
	@copyright		Copyright (C) 2021. All Rights Reserved.
	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html
  ____  _____  _____  __  __  __      __       ___  _____  __  __  ____  _____  _  _  ____  _  _  ____ 
 (_  _)(  _  )(  _  )(  \/  )(  )    /__\     / __)(  _  )(  \/  )(  _ \(  _  )( \( )( ___)( \( )(_  _)
.-_)(   )(_)(  )(_)(  )    (  )(__  /(__)\   ( (__  )(_)(  )    (  )___/ )(_)(  )  (  )__)  )  (   )(  
\____) (_____)(_____)(_/\/\_)(____)(__)(__)   \___)(_____)(_/\/\_)(__)  (_____)(_)\_)(____)(_)\_) (__) 

/------------------------------------------------------------------------------------------------------*/

// No direct access to this file
defined('_JEXEC') or die('Restricted access');

use Joomla\CMS\MVC\Controller\FormController;
use Joomla\Utilities\ArrayHelper;

/**
 * Extension Form Controller
 */
class ExtensiondistributorControllerExtension extends FormController
{
	/**
	 * Current or most recently performed task.
	 *
	 * @var    string
	 * @since  12.2
	 * @note   Replaces _task.
	 */
	protected $task;

	/**
	 * Class constructor.
	 *
	 * @param   array  $config  A named array of configuration variables.
	 *
	 * @since   1.6
	 */
	public function __construct($config = array())
	{
		$this->view_list = 'Extensions'; // safeguard for setting the return view listing to the main view.
		parent::__construct($config);
	}

	public function download()
	{
		JSession::checkToken('get') or jexit('Wrong token');

		global $cparams;
		$app         = JFactory::getApplication();
		$extensionId = (int) $app->input->get('extension');
		$packageId   = (int) $app->input->get('package');
		$releaseId   = (int) $app->input->get('release');

		// We check if a release ID was provided or we get the latest one
		if ($releaseId)
		{
			$latest       = new stdClass();
			$latest->file = ExtensiondistributorHelper::getVar(
				'release', $releaseId, 'id', 'file'
			);
		}
		else
		{
			if ($extensionId > 0)
			{
				$latest = ExtensiondistributorHelper::getReleases(
					$extensionId, 'extension', true
				);
			}
			else
			{
				$latest = ExtensiondistributorHelper::getReleases(
					$packageId, 'package', true
				);
			}
		}
		$folder   = $cparams->get('releases_directory');
		$filename = $latest->file;
		$folder   = JPath::clean(JPATH_SITE . '/' . $folder . '/');

		$file = $folder . $filename;
		$size = filesize($file);

		header('Content-Description: File Transfer');
		header('Content-Type: application/octet-stream');
		header("Content-Transfer-Encoding: Binary");
		header('Content-Disposition: attachment; filename="' . $filename . '"');
		header('Expires: 0');
		header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
		header('Pragma: public');
		header('Content-Length: ' . $size);
		ob_clean();
		flush();
		readfile($file);

		jexit();
	}

	public function uploadFile()
	{
		JSession::checkToken('get') or jexit('Wrong token');

		$app = JFactory::getApplication();
		global $cparams;
		$release = $cparams->get('releases_directory', 'packages');
		$jcb     = $cparams->get('jcb_directory', 'jcb');
		$import  = $cparams->get('import_directory', 'importfolder');

		$type     = $app->input->get('type', 'release');
		$path     = JPath::clean(JPATH_SITE . '/' . ${$type});
		$filename = '';

		$userfile = array();
		foreach ($_FILES as $name => $file)
		{
			foreach ($file as $property => $keys)
			{
				foreach ($keys as $key => $value)
				{
					$userfile[$name][$key][$property] = $value;
				}
			}
		}

		$userfile = $userfile['files'][0];
		$model    = $this->getModel('extension');
		$package  = $model->uploadFile($userfile);

		// Cette partie est empruntée au com_media de Joomla
		$extension = strtolower($package['format']);
		$filename  = JFile::makeSafe($package['packagename']);
		$filename  = str_replace('.' . $package['format'], '', $filename);
		$filename  = JStringPunycode::toPunycode($filename);
		$filename  = preg_replace(
				array("/[\\s]/", '/[^a-zA-Z0-9_\-]/'), array('_', ''), $filename
			) . '.' . $extension;
		// Fin de l'emprunt

		// move packages to the correct directory
		$final_dest = $path . DIRECTORY_SEPARATOR . $filename;
		JFile::move($package['dir'], $final_dest);

		echo json_encode($package);

		exit();
	}

	public function getImportFilesList()
	{
		JSession::checkToken('get') or jexit('Wrong token');

		global $cparams;
		$app    = JFactory::getApplication();
		$import = $cparams->get('import_directory', 'importfolder');
		$path   = JPath::clean(JPATH_SITE . '/' . $import);
		$files  = JFolder::files($path, '.zip', false, true);

		echo JLayoutHelper::render('importfiles', array($files));

		exit();
	}

	public function importExtensions()
	{
		JSession::checkToken('get') or jexit('Wrong token');

		global $cparams;
		$app      = JFactory::getApplication();
		$folder   = JPATH_SITE . '/' . $cparams->get(
				'import_directory', 'extmanagerimport'
			);
		$category = $cparams->get('catid');
		$file     = $this->input->get('file', null, 'base64');
		if (!is_null($file))
		{
			$files[] = base64_decode($file);
		}
		else
		{
			$files = JFolder::files($folder, '.zip', false, true);
		}
		// Check if there is a return value
		$return = $this->input->get('return', null, 'base64');
		// Preset the redirect
		if (!is_null($return) && JUri::isInternal(base64_decode($return)))
		{
			$redirect = base64_decode($return);

			// Redirect to the return value.
			$this->setRedirect(
				JRoute::_(
					$redirect, false
				)
			);
		}
		if ($category === null)
		{
			$app->enqueueMessage(
				'You have to choose the import category in the component configuration',
				'error'
			);

			return false;
		}

		if (ExtensiondistributorHelper::checkArray($files))
		{
			foreach ($files as $i => $file)
			{
				$this->importExtension($file);
			}
		}

		return true;
	}

	public function importExtension($file)
	{
		global $cparams;
		$app           = JFactory::getApplication();
		$packages      = $cparams->get('releases_directory', 'packages');
		$packages_path = JPath::clean(JPATH_SITE . '/' . $packages . '/');
		$folder        = JPATH_SITE . '/' . $cparams->get(
				'import_directory', 'extmanagerimport'
			);
		$category      = $cparams->get('catid');
		$icon_failed   = '<span class="icon-warning"></span> ';
		$icon_success  = '<span class="icon-checkmark"></span> ';
		$success       = true;

		// First extract zip file
		$zip = new ZipArchive();
		$res = $zip->open($file);
		if ($res === true)
		{
			$zip->extractTo($folder . '/tmp');
			$zip->close();
			$msg[] = sprintf(
				'File <b>%s</b> successfully extracted',
				pathinfo($file)['filename']
			);
		}
		else
		{
			$msg[] = sprintf('Cannot extract file <b>%s</b>');
		}
		// Check if there's an xml file in the tmp folder
		$manifest = JFolder::files($folder . '/tmp', '.xml', false, true);
		if (ExtensiondistributorHelper::checkArray($manifest))
		{
			$extfolder = $folder . '/tmp/';
			$manifest  = $manifest[0];
		}
		else
		{
			// Should be in a subfolder
			if (JFolder::exists($folder . '/tmp/__MACOSX'))
			{
				// Have to find something more global
				JFolder::delete($folder . '/tmp/__MACOSX');
			}
			// Find the new folder
			$extracted = JFolder::folders($folder . '/tmp');
			$extracted = $extracted[0];
			$extfolder = $folder . '/tmp/' . $extracted;
			// Get the manifest
			$manifest = JFolder::files($extfolder, '.xml', false, true);
			$manifest = $manifest[0];
		}

		// Try to find a language directory in the install folder
		$language_dir = JFolder::folders($extfolder, 'lang(.*)', true, true);
		if (ExtensiondistributorHelper::checkArray($language_dir))
		{
			// Find a file
			$language_file = JFolder::files($language_dir[0], '.', true);
			if (ExtensiondistributorHelper::checkArray($language_file))
			{
				$language_file = $language_file[0];
				$ext           = explode('.', $language_file);
				// Now we can load the extension language file
				$language     = JFactory::getLanguage();
				$ext          = $ext[1];
				$base_dir     = str_replace('/language', '', $language_dir[0]);
				$language_tag = null;
				$reload       = true;
				$language->load($ext, $base_dir, $language_tag, $reload);
			}
		}

		// Read the XML data
		$xml = simplexml_load_file($manifest);

		$extension                = array();
		$extension['type']        = (string) $xml['type'];
		$extension['group']       = (string) $xml['group'];
		$extension['client']      = (string) $xml['client'];
		$extension['name']        = JText::_((string) $xml->name);
		$extension['description'] = JText::_((string) $xml->description);

		if ($extension['type'] === 'plugin')
		{
			$extension['element'] = (string) $xml->files->filename['plugin'];
		}
		else
		{
			$extension['element'] = strtolower((string) $xml->name);
		}

		$release                   = array();
		$release['version_number'] = (string) $xml->version;

		try
		{
			$reldate = JFactory::getDate((string) $xml->creationDate)->toSql();
		}
		catch (Exception $e)
		{
			$reldate = JFactory::getDate()->toSql();
		}

		$release['release_date'] = $reldate;
		$release['file']         = pathinfo($file)['basename'];

		// We check if the extension already exists
		$extensionId = ExtensiondistributorHelper::isExtension(
			$extension['type'], $extension['element'], $extension['group'],
			$extension['client']
		);
		if (!$extensionId)
		{
			// If not we create it
			$model = ExtensiondistributorHelper::getModel('extension');
			$element = $model->getItem();
			// Extension
			$element->name         = $extension['name'];
			$element->type         = $extension['type'];
			$element->element      = $extension['element'];
			$element->group        = $extension['group'];
			$element->client       = $extension['client'];
			$element->description  = $extension['description'];
			$element->keepfilename = $cparams->get('keepfilename') ? 1 : 0;
			$element->newfilename  = $cparams->get('newfilename');
			$element->created_by   = JFactory::getUser()->id;
			$element->created      = JFactory::getDate()->toSql();
			$element->alias        = JFilterOutput::stringURLSafe(
				$element->name
			);
			$element->update       = JUri::root() . 'updates/' . $element->alias
				. '.xml';
			$element->catid        = $category;
			// Release
			$element->version_number = $release['version_number'];
			$element->release_date   = $release['release_date'];
			unset($element->tags);

			if ($model->save((array) $element))
			{
				$extensionId = ExtensiondistributorHelper::extensionsLastId();
				$msg[] = sprintf(
					'%sExtension %s successfully created | id:%s',
					$icon_success, $element->name, $extensionId
				);
			}
		}
		else
		{
			$name = ExtensiondistributorHelper::getVar(
				'extension', $extensionId, 'id', 'name'
			);
			$msg[] = sprintf(
				'%sExtension %s already exists | id:%s', $icon_failed, $name,
				$extensionId
			);
		}

		// We check if the release already exists
		$releaseId = ExtensiondistributorHelper::isRelease(
			$extensionId, $release['version_number']
		);
		if (!$releaseId)
		{
			// If not we create it
			$model = ExtensiondistributorHelper::getModel('release');
			$element                 = $model->getItem();
			$element->extension      = $extensionId;
			$element->version_number = $release['version_number'];
			$element->release_date   = $release['release_date'];
			$element->stability      = $cparams->get('stability', 4);
			$element->toolbar        = 'NOPE';
			$element->zip_content    = 'EMPTY';
			$element->reltype        = $cparams->get('reltype', 'maintenance');
			$element->created_by     = JFactory::getUser()->id;
			$element->created        = JFactory::getDate()->toSql();
			$element->file           = $release['file'];
			if (!$cparams->get('keepfilename'))
			{
				// We create the new filename
				$extensionObject = ExtensiondistributorHelper::getExtensionObject(
					$extensionId
				);
				$filename = ExtensiondistributorHelper::createExtensionFileName(
					$extensionObject,
					$element->version_number,
					$element->stability,
					$element->file
				);
				$element->file = $filename;
			}
			unset($element->tags);

			if ($model->save((array) $element))
			{
				$msg[] = sprintf(
					'%sRelease %s successfully created', $icon_success,
					$element->version_number
				);
				// We move the releases file to its destination
				JFile::move($file, $packages_path . $element->file);
				// We delete the original file
				if (JFile::exists($file))
				{
					JFile::delete($file);
				}
			}
		}
		else
		{
			$version = ExtensiondistributorHelper::getVar(
				'release', $releaseId, 'id', 'version_number'
			);
			$msg[]   = sprintf(
				'%sThe release %s exists already | id:%s', $icon_failed,
				$version, $releaseId
			);
			$success = false;
		}

		$app->enqueueMessage(
			implode('<br>', $msg), $success ? 'message' : 'error'
		);

		// We delete the temp folder
		JFolder::delete($folder . '/tmp');
	}

	public function deleteImportFiles()
	{
		JSession::checkToken('get') or jexit('Wrong token');

		global $cparams;
		$app    = JFactory::getApplication();
		$folder = JPATH_SITE . '/' . $cparams->get(
				'import_directory', 'extmanagerimport'
			);
		$file   = $this->input->get('file', null, 'base64');
		if (!is_null($file))
		{
			$files[] = base64_decode($file);
		}
		else
		{
			$files = JFolder::files($folder, '.zip', false, true);
		}
		// Check if there is a return value
		$return = $this->input->get('return', null, 'base64');
		// Preset the redirect
		if (!is_null($return) && JUri::isInternal(base64_decode($return)))
		{
			$redirect = base64_decode($return);

			// Redirect to the return value.
			$this->setRedirect(
				JRoute::_(
					$redirect, false
				)
			);
		}

		if (ExtensiondistributorHelper::checkArray($files))
		{
			foreach ($files as $file)
			{
				if (JFile::delete($file))
				{
					$app->enqueueMessage(
						sprintf(
							'The file %s was successfully deleted',
							pathinfo($file)['filename']
						)
					);
				}
				else
				{
					$app->enqueueMessage(
						sprintf(
							'Cannot delete file %s', pathinfo($file)['filename']
						), 'error'
					);
				}
			}
		}
		else
		{
			$app->enqueueMessage('No files to delete', 'error');
		}
	
		return true;
	}


        /**
	 * Method override to check if you can add a new record.
	 *
	 * @param   array  $data  An array of input data.
	 *
	 * @return  boolean
	 *
	 * @since   1.6
	 */
	protected function allowAdd($data = array())
	{
		// Get user object.
		$user = JFactory::getUser();

		// In the absense of better information, revert to the component permissions.
		return parent::allowAdd($data);
	}

	/**
	 * Method override to check if you can edit an existing record.
	 *
	 * @param   array   $data  An array of input data.
	 * @param   string  $key   The name of the key for the primary key.
	 *
	 * @return  boolean
	 *
	 * @since   1.6
	 */
	protected function allowEdit($data = array(), $key = 'id')
	{		// get user object.
		$user = JFactory::getUser();
		// get record id.
		$recordId = (int) isset($data[$key]) ? $data[$key] : 0;


		if ($recordId)
		{
			// The record has been set. Check the record permissions.
			$permission = $user->authorise('core.edit', 'com_extensiondistributor.extension.' . (int) $recordId);
			if (!$permission)
			{
				if ($user->authorise('core.edit.own', 'com_extensiondistributor.extension.' . $recordId))
				{
					// Fallback on edit.own. Now test the owner is the user.
					$ownerId = (int) isset($data['created_by']) ? $data['created_by'] : 0;
					if (empty($ownerId))
					{
						// Need to do a lookup from the model.
						$record = $this->getModel()->getItem($recordId);

						if (empty($record))
						{
							return false;
						}
						$ownerId = $record->created_by;
					}

					// If the owner matches 'me' then do the test.
					if ($ownerId == $user->id)
					{
						if ($user->authorise('core.edit.own', 'com_extensiondistributor'))
						{
							return true;
						}
					}
				}
				return false;
			}
		}
		// Since there is no permission, revert to the component permissions.
		return parent::allowEdit($data, $key);
	}

	/**
	 * Gets the URL arguments to append to an item redirect.
	 *
	 * @param   integer  $recordId  The primary key id for the item.
	 * @param   string   $urlVar    The name of the URL variable for the id.
	 *
	 * @return  string  The arguments to append to the redirect URL.
	 *
	 * @since   1.6
	 */
	protected function getRedirectToItemAppend($recordId = null, $urlVar = 'id')
	{
		// get the referral options (old method use return instead see parent)
		$ref = $this->input->get('ref', 0, 'string');
		$refid = $this->input->get('refid', 0, 'int');

		// get redirect info.
		$append = parent::getRedirectToItemAppend($recordId, $urlVar);

		// set the referral options
		if ($refid && $ref)
                {
			$append = '&ref=' . (string)$ref . '&refid='. (int)$refid . $append;
		}
		elseif ($ref)
		{
			$append = '&ref='. (string)$ref . $append;
		}

		return $append;
	}

	/**
	 * Method to run batch operations.
	 *
	 * @param   object  $model  The model.
	 *
	 * @return  boolean   True if successful, false otherwise and internal error is set.
	 *
	 * @since   2.5
	 */
	public function batch($model = null)
	{
		JSession::checkToken() or jexit(JText::_('JINVALID_TOKEN'));

		// Set the model
		$model = $this->getModel('Extension', '', array());

		// Preset the redirect
		$this->setRedirect(JRoute::_('index.php?option=com_extensiondistributor&view=extensions' . $this->getRedirectToListAppend(), false));

		return parent::batch($model);
	}

	/**
	 * Method to cancel an edit.
	 *
	 * @param   string  $key  The name of the primary key of the URL variable.
	 *
	 * @return  boolean  True if access level checks pass, false otherwise.
	 *
	 * @since   12.2
	 */
	public function cancel($key = null)
	{
		// get the referral options
		$this->ref = $this->input->get('ref', 0, 'word');
		$this->refid = $this->input->get('refid', 0, 'int');

		// Check if there is a return value
		$return = $this->input->get('return', null, 'base64');

		$cancel = parent::cancel($key);

		if (!is_null($return) && JUri::isInternal(base64_decode($return)))
		{
			$redirect = base64_decode($return);

			// Redirect to the return value.
			$this->setRedirect(
				JRoute::_(
					$redirect, false
				)
			);
		}
		elseif ($this->refid && $this->ref)
		{
			$redirect = '&view=' . (string)$this->ref . '&layout=edit&id=' . (int)$this->refid;

			// Redirect to the item screen.
			$this->setRedirect(
				JRoute::_(
					'index.php?option=' . $this->option . $redirect, false
				)
			);
		}
		elseif ($this->ref)
		{
			$redirect = '&view='.(string)$this->ref;

			// Redirect to the list screen.
			$this->setRedirect(
				JRoute::_(
					'index.php?option=' . $this->option . $redirect, false
				)
			);
		}
		return $cancel;
	}

	/**
	 * Method to save a record.
	 *
	 * @param   string  $key     The name of the primary key of the URL variable.
	 * @param   string  $urlVar  The name of the URL variable if different from the primary key (sometimes required to avoid router collisions).
	 *
	 * @return  boolean  True if successful, false otherwise.
	 *
	 * @since   12.2
	 */
	public function save($key = null, $urlVar = null)
	{
		// get the referral options
		$this->ref = $this->input->get('ref', 0, 'word');
		$this->refid = $this->input->get('refid', 0, 'int');

		// Check if there is a return value
		$return = $this->input->get('return', null, 'base64');
		$canReturn = (!is_null($return) && JUri::isInternal(base64_decode($return)));

		if ($this->ref || $this->refid || $canReturn)
		{
			// to make sure the item is checkedin on redirect
			$this->task = 'save';
		}

		$saved = parent::save($key, $urlVar);

		// This is not needed since parent save already does this
		// Due to the ref and refid implementation we need to add this
		if ($canReturn)
		{
			$redirect = base64_decode($return);

			// Redirect to the return value.
			$this->setRedirect(
				JRoute::_(
					$redirect, false
				)
			);
		}
		elseif ($this->refid && $this->ref)
		{
			$redirect = '&view=' . (string)$this->ref . '&layout=edit&id=' . (int)$this->refid;

			// Redirect to the item screen.
			$this->setRedirect(
				JRoute::_(
					'index.php?option=' . $this->option . $redirect, false
				)
			);
		}
		elseif ($this->ref)
		{
			$redirect = '&view=' . (string)$this->ref;

			// Redirect to the list screen.
			$this->setRedirect(
				JRoute::_(
					'index.php?option=' . $this->option . $redirect, false
				)
			);
		}
		return $saved;
	}

	/**
	 * Function that allows child controller access to model data
	 * after the data has been saved.
	 *
	 * @param   JModel  &$model     The data model object.
	 * @param   array   $validData  The validated data.
	 *
	 * @return  void
	 *
	 * @since   11.1
	 */
	protected function postSaveHook(JModelLegacy $model, $validData = array())
	{
		return;
	}

}