/controllers/admin/AdminTranslationsController.php

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<?php
/*
* 2007-2014 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2014 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

class AdminTranslationsControllerCore extends AdminController
{
	/** Name of theme by default */
	const DEFAULT_THEME_NAME = _PS_DEFAULT_THEME_NAME_;
	const TEXTAREA_SIZED = 70;

	/** @var string : Link which list all pack of language */
	protected $link_lang_pack = 'http://www.prestashop.com/download/lang_packs/get_each_language_pack.php';

	/** @var int : number of sentence which can be translated */
	protected $total_expression = 0;

	/** @var int : number of sentence which aren't translated */
	protected $missing_translations = 0;

	/** @var array : List of ISO code for all languages */
	protected $all_iso_lang = array();

	/** @var array */
	protected $modules_translations = array();

	/** @var array : List of folder which must be ignored */
	protected static $ignore_folder = array('.', '..', '.svn', '.git', '.htaccess', 'index.php');

	/** @var array : List of theme by translation type : FRONT, BACK, ERRORS... */
	protected $translations_informations = array();

	/** @var array : List of all languages */
	protected $languages;

	/** @var array : List of all themes */
	protected $themes;

	/** @var string : Directory of selected theme */
	protected $theme_selected;

	/** @var string : Name of translations type */
	protected $type_selected;

	/** @var Language object : Language for the selected language */
	protected $lang_selected;

	/** @var boolean : Is true if number of var exceed the suhosin request or post limit */
	protected $post_limit_exceed = false;

	public function __construct()
	{
		$this->bootstrap = true;
		$this->multishop_context = Shop::CONTEXT_ALL;
	 	$this->table = 'translations';

		parent::__construct();
	}

	/*
	 * Set the type which is selected
	 */
	public function setTypeSelected($type_selected)
	{
		$this->type_selected = $type_selected;
	}

	/**
	 * AdminController::initContent() override
	 * @see AdminController::initContent()
	 */
	public function initContent()
	{
		$this->initTabModuleList();
		$this->initPageHeaderToolbar();
		
		if (!is_null($this->type_selected))
		{
			$method_name = 'initForm'.$this->type_selected;
			if (method_exists($this, $method_name))
				$this->content = $this->initForm($method_name);
			else
			{
				$this->errors[] = sprintf(Tools::displayError('"%s" does not exist.'), $this->type_selected);
				$this->content = $this->initMain();
			}
		}
		else
			$this->content = $this->initMain();

		$this->context->smarty->assign(array(
			'content' => $this->content,
			'show_page_header_toolbar' => $this->show_page_header_toolbar,
			'page_header_toolbar_title' => $this->page_header_toolbar_title,
			'page_header_toolbar_btn' => $this->page_header_toolbar_btn));
	}

	/**
	 * This function create vars by default and call the good method for generate form
	 *
	 * @param $method_name
	 * @return call the method $this->method_name()
	 */
	public function initForm($method_name)
	{
		// Create a title for each translation page
		$title = sprintf(
			$this->l('%1$s (Language: %2$s, Theme: %3$s)'),
			$this->translations_informations[$this->type_selected]['name'],
			$this->lang_selected->name,
			$this->theme_selected ? $this->theme_selected : $this->l('none')
		);

		// Set vars for all forms
		$this->tpl_view_vars = array(
			'lang' => $this->lang_selected->iso_code,
			'title' => $title,
			'type' => $this->type_selected,
			'theme' => $this->theme_selected,
			'post_limit_exceeded' => $this->post_limit_exceed,
			'url_submit' => self::$currentIndex.'&submitTranslations'.ucfirst($this->type_selected).'=1&token='.$this->token,
			'toggle_button' => $this->displayToggleButton(),
			'textarea_sized' => AdminTranslationsControllerCore::TEXTAREA_SIZED
		);

		// Call method initForm for a type
		return $this->{$method_name}();
	}

	/**
	 * AdminController::initToolbar() override
	 * @see AdminController::initToolbar()
	 */
	public function initToolbar()
	{
		$this->toolbar_btn['save-and-stay'] = array(
			'short' => 'SaveAndStay',
			'href' => '#',
			'desc' => $this->l('Save and stay'),
		);
		$this->toolbar_btn['save'] = array(
			'href' => '#',
			'desc' => $this->l('Update translations')
		);
		$this->toolbar_btn['cancel'] = array(
			'href' => self::$currentIndex.'&token='.$this->token,
			'desc' => $this->l('Cancel')
		);
	}

	/**
	 * Generate the Main page
	 */
	public function initMain()
	{
		// Block add/update a language
		$packs_to_install = array();
		$packs_to_update = array();
		$token = Tools::getAdminToken('AdminLanguages'.(int)Tab::getIdFromClassName('AdminLanguages').(int)$this->context->employee->id);
		$file_name = $this->link_lang_pack.'?version='._PS_VERSION_;
		$array_stream_context = @stream_context_create(array('http' => array('method' => 'GET', 'timeout' => 8)));
		if ($lang_packs = Tools::file_get_contents($file_name, false, $array_stream_context))
			// Notice : for php < 5.2 compatibility, Tools::jsonDecode. The second parameter to true will set us
			if ($lang_packs != '' && $lang_packs = Tools::jsonDecode($lang_packs, true))
				foreach ($lang_packs as $key => $lang_pack)
				{
					if (!Language::isInstalled($lang_pack['iso_code']))
						$packs_to_install[$key] = $lang_pack;
					else
						$packs_to_update[$key] = $lang_pack;
				}

		$this->tpl_view_vars = array(
			'theme_default' => self::DEFAULT_THEME_NAME,
			'theme_lang_dir' =>_THEME_LANG_DIR_,
			'token' => $this->token,
			'languages' => $this->languages,
			'translations_type' => $this->translations_informations,
			'packs_to_install' => $packs_to_install,
			'packs_to_update' => $packs_to_update,
			'url_submit' => self::$currentIndex.'&token='.$this->token,
			'themes' => $this->themes,
			'id_theme_current' => $this->context->shop->id_theme,
			'url_create_language' => 'index.php?controller=AdminLanguages&addlang&token='.$token,
		);

		$this->toolbar_scroll = false;
		$this->base_tpl_view = 'main.tpl';
		
		$this->content .= $this->renderKpis();
		$this->content .= parent::renderView();
		
		return $this->content;
	}

	/**
	 * This method merge each arrays of modules translation in the array of modules translations
	 */
	protected function getModuleTranslations()
	{
		global $_MODULE;
		$name_var = $this->translations_informations[$this->type_selected]['var'];

		if (!isset($_MODULE) && !isset($GLOBALS[$name_var]))
			$GLOBALS[$name_var] = array();
		else if (isset($_MODULE))
			if (is_array($GLOBALS[$name_var]) && is_array($_MODULE))
				$GLOBALS[$name_var] = array_merge($GLOBALS[$name_var], $_MODULE);
			else
				$GLOBALS[$name_var] = $_MODULE;
	}

	/**
	 * This method is only used by AdminTranslations::submitCopyLang().
	 *
	 * It try to create folder in new theme.
	 *
	 * When a translation file is copied for a module, its translation key is wrong.
	 * We have to change the translation key and rewrite the file.
	 *
	 * @param string $dest file name
	 * @return bool
	 */
	protected function checkDirAndCreate($dest)
	{
		$bool = true;

		// To get only folder path
		$path = dirname($dest);

		// If folder wasn't already added
		// Do not use Tools::file_exists_cache because it changes over time!
		if (!file_exists($path))
			if (!mkdir($path, 0777, true))
			{
				$bool &= false;
				$this->errors[] = sprintf($this->l('Cannot create the folder "%s". Please check your directory writing permissions.'), $path);
			}

		return $bool;
	}

	/**
	 * Read the Post var and write the translation file.
	 * This method overwrites the old translation file.
	 *
	 * @param bool $override_file : set true if this file is a override
	 */
	protected function writeTranslationFile($override_file = false)
	{
		$type = Tools::toCamelCase($this->type_selected, true);
		$translation_informations = $this->translations_informations[$this->type_selected];

		if ($override_file)
			$file_path = $translation_informations['override']['dir'].$translation_informations['override']['file'];
		else
			$file_path = $translation_informations['dir'].$translation_informations['file'];

		if (!file_exists($file_path))
		{
			if (!file_exists(dirname($file_path)) && !mkdir(dirname($file_path), 0777, true))
				throw new PrestaShopException(sprintf(Tools::displayError('Directory "%s" cannot be created'), dirname($file_path)));
			elseif (!touch($file_path))
				throw new PrestaShopException(sprintf(Tools::displayError('File "%s" cannot be created'), $file_path));
		}
		$thm_name = str_replace('.', '', Tools::getValue('theme'));
		$kpi_key = substr(strtoupper($thm_name.'_'.Tools::getValue('lang')), 0, 16);

		if ($fd = fopen($file_path, 'w'))
		{
			// Get value of button save and stay
			$save_and_stay = Tools::isSubmit('submitTranslations'.$type.'AndStay');

			// Get language
			$lang = strtolower(Tools::getValue('lang'));

			// Unset all POST which are not translations
			unset(
				$_POST['submitTranslations'.$type],
				$_POST['submitTranslations'.$type.'AndStay'],
				$_POST['lang'],
				$_POST['token'],
				$_POST['theme'],
				$_POST['type']
			);

			// Get all POST which aren't empty
			$to_insert = array();
			foreach ($_POST as $key => $value)
				if (!empty($value))
					$to_insert[$key] = $value;

			ConfigurationKPI::updateValue('FRONTOFFICE_TRANSLATIONS_EXPIRE', time());
			ConfigurationKPI::updateValue('TRANSLATE_TOTAL_'.$kpi_key, count($_POST));
			ConfigurationKPI::updateValue('TRANSLATE_DONE_'.$kpi_key, count($to_insert));

			// translations array is ordered by key (easy merge)
			ksort($to_insert);
			$tab = $translation_informations['var'];
			fwrite($fd, "<?php\n\nglobal \$".$tab.";\n\$".$tab." = array();\n");
			foreach ($to_insert as $key => $value)
				fwrite($fd, '$'.$tab.'[\''.pSQL($key, true).'\'] = \''.pSQL($value, true).'\';'."\n");
			fwrite($fd, "\n?>");
			fclose($fd);

			// Redirect
			if ($save_and_stay)
				$this->redirect(true);
			else
				$this->redirect();
		}
		else
			throw new PrestaShopException(sprintf(Tools::displayError('Cannot write this file: "%s"'), $file_path));
	}

	public function submitCopyLang()
	{
		if (!($from_lang = Tools::getValue('fromLang')) || !($to_lang = Tools::getValue('toLang')))
			$this->errors[] = $this->l('You must select two languages in order to copy data from one to another.');
		else if (!($from_theme = Tools::getValue('fromTheme')) || !($to_theme = Tools::getValue('toTheme')))
			$this->errors[] = $this->l('You must select two themes in order to copy data from one to another.');
		else if (!Language::copyLanguageData(Language::getIdByIso($from_lang), Language::getIdByIso($to_lang)))
			$this->errors[] = $this->l('An error occurred while copying data.');
		else if ($from_lang == $to_lang && $from_theme == $to_theme)
			$this->errors[] = $this->l('There is nothing to copy (same language and theme).');
		else
		{
			$theme_exists = array('from_theme' => false, 'to_theme' => false);
			foreach ($this->themes as $theme)
			{
				if ($theme->directory == $from_theme)
					$theme_exists['from_theme'] = true;
				if ($theme->directory == $to_theme)
					$theme_exists['to_theme'] = true;
			}
			if ($theme_exists['from_theme'] == false || $theme_exists['to_theme'] == false)
				$this->errors[] = $this->l('Theme(s) not found');
		}
		if (count($this->errors))
			return;

		$bool = true;
		$items = Language::getFilesList($from_lang, $from_theme, $to_lang, $to_theme, false, false, true);
		foreach ($items as $source => $dest)
		{
			if (!$this->checkDirAndCreate($dest))
				$this->errors[] = sprintf($this->l('Impossible to create the directory "%s".'), $dest);
			elseif (!copy($source, $dest))
				$this->errors[] = sprintf($this->l('Impossible to copy "%s" to "%s".'), $source, $dest);
			elseif (strpos($dest, 'modules') && basename($source) === $from_lang.'.php' && $bool !== false)
				if (!$this->changeModulesKeyTranslation($dest, $from_theme, $to_theme))
					$this->errors[] = sprintf($this->l('Impossible to translate "$dest".'), $dest);
		}
		if (!count($this->errors))
			$this->redirect(false, 14);
		$this->errors[] = $this->l('A part of the data has been copied but some of the language files could not be found.');
	}

	/**
	 * Change the key translation to according it to theme name.
	 *
	 * @param string $path
	 * @param string $theme_from
	 * @param string $theme_to
	 * @return boolean
	 */
	public function changeModulesKeyTranslation($path, $theme_from, $theme_to)
	{
		$content = file_get_contents($path);
		$arr_replace = array();
		$bool_flag = true;
		if (preg_match_all('#\$_MODULE\[\'([^\']+)\'\]#Ui', $content, $matches))
		{
			foreach ($matches[1] as $key => $value)
				$arr_replace[$value] = str_replace($theme_from, $theme_to, $value);
			$content = str_replace(array_keys($arr_replace), array_values($arr_replace), $content);
			$bool_flag = (file_put_contents($path, $content) === false) ? false : true;
		}
		return $bool_flag;
	}

	public function exportTabs()
	{
		// Get name tabs by iso code
		$tabs = Tab::getTabs($this->lang_selected->id);

		// Get name of the default tabs
		$tabs_default_lang = Tab::getTabs(1);

		$tabs_default = array();
		foreach ($tabs_default_lang as $tab)
			$tabs_default[$tab['class_name']] = pSQL($tab['name']);

		// Create content
		$content = "<?php\n\n\$tabs = array();";
		if (!empty($tabs))
			foreach ($tabs as $tab)
				if ($tabs_default[$tab['class_name']] != pSQL($tab['name']))
				$content .= "\n\$tabs['".$tab['class_name']."'] = '".pSQL($tab['name'])."';";
		$content .= "\n\nreturn \$tabs;";

		$dir = _PS_TRANSLATIONS_DIR_.$this->lang_selected->iso_code.DIRECTORY_SEPARATOR;
		$path = $dir.'tabs.php';

		// Check if tabs.php exists for the selected Iso Code
		if (!Tools::file_exists_cache($dir))
			if (!mkdir($dir, 0777, true))
				throw new PrestaShopException('The file '.$dir.' cannot be created.');
		if (!file_put_contents($path, $content))
				throw new PrestaShopException('File "'.$path.'" doesn\'t exists and cannot be created in '.$dir);
		if (!is_writable($path))
			$this->displayWarning(sprintf(Tools::displayError('This file must be writable: %s'), $path));
	}

	public function submitExportLang()
	{
		if ($this->lang_selected->iso_code && $this->theme_selected)
		{
			$this->exportTabs();
			$items = array_flip(Language::getFilesList($this->lang_selected->iso_code, $this->theme_selected, false, false, false, false, true));
			$file_name = _PS_TRANSLATIONS_DIR_.'/export/'.$this->lang_selected->iso_code.'.gzip';
			require_once(_PS_TOOL_DIR_.'tar/Archive_Tar.php');
			$gz = new Archive_Tar($file_name, true);
			if ($gz->createModify($items, null, _PS_ROOT_DIR_))
			{
				ob_start();
				header('Pragma: public');
				header('Expires: 0');
				header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
				header('Cache-Control: public');
				header('Content-Description: File Transfer');
				header('Content-type: application/octet-stream');
				header('Content-Disposition: attachment; filename="'.$this->lang_selected->iso_code.'.gzip'.'"');
				header('Content-Transfer-Encoding: binary');
				ob_end_flush();
				readfile($file_name);
				@unlink($file_name);
				exit;
			}
			$this->errors[] = Tools::displayError('An error occurred while creating archive.');
		}
		$this->errors[] = Tools::displayError('Please select a language and a theme.');
	}

	public static function checkAndAddMailsFiles($iso_code, $files_list)
	{
		if (Language::getIdByIso('en'))
			$default_language = 'en';
		else
			$default_language = Language::getIsoById((int)Configuration::get('PS_LANG_DEFAULT'));

		if (!$default_language || !Validate::isLanguageIsoCode($default_language))
			return false;

		// 1 - Scan mails files
		$mails = array();
		if (Tools::file_exists_cache(_PS_MAIL_DIR_.$default_language.'/'))
			$mails = scandir(_PS_MAIL_DIR_.$default_language.'/');

		$mails_new_lang = array();

		// Get all email files
		foreach ($files_list as $file)
		{
			if (preg_match('#^mails\/([a-z0-9]+)\/#Ui', $file['filename'], $matches))
			{
				$slash_pos = strrpos($file['filename'], '/');
				$mails_new_lang[] = substr($file['filename'], -(strlen($file['filename']) - $slash_pos - 1));
			}
		}

		// Get the difference
		$arr_mails_needed = array_diff($mails, $mails_new_lang);

		// Add mails files
		foreach ($arr_mails_needed as $mail_to_add)
			if (!in_array($mail_to_add, self::$ignore_folder))
				@copy(_PS_MAIL_DIR_.$default_language.'/'.$mail_to_add, _PS_MAIL_DIR_.$iso_code.'/'.$mail_to_add);

		// 2 - Scan modules files
		$modules = scandir(_PS_MODULE_DIR_);

		$module_mail_en = array();
		$module_mail_iso_code = array();

		foreach ($modules as $module)
		{
			if (!in_array($module, self::$ignore_folder) && Tools::file_exists_cache(_PS_MODULE_DIR_.$module.'/mails/'.$default_language.'/'))
			{
				$arr_files = scandir(_PS_MODULE_DIR_.$module.'/mails/'.$default_language.'/');

				foreach ($arr_files as $file)
				{
					if (!in_array($file, self::$ignore_folder))
					{
						if (Tools::file_exists_cache(_PS_MODULE_DIR_.$module.'/mails/'.$default_language.'/'.$file))
							$module_mail_en[] = _PS_MODULE_DIR_.$module.'/mails/ISO_CODE/'.$file;

						if (Tools::file_exists_cache(_PS_MODULE_DIR_.$module.'/mails/'.$iso_code.'/'.$file))
							$module_mail_iso_code[] = _PS_MODULE_DIR_.$module.'/mails/ISO_CODE/'.$file;
					}
				}
			}
		}

		// Get the difference in this modules
		$arr_modules_mails_needed = array_diff($module_mail_en, $module_mail_iso_code);

		// Add mails files for this modules
		foreach ($arr_modules_mails_needed as $file)
		{
			$file_en = str_replace('ISO_CODE', $default_language, $file);
			$file_iso_code = str_replace('ISO_CODE', $iso_code, $file);
			$dir_iso_code = substr($file_iso_code, 0, -(strlen($file_iso_code) - strrpos($file_iso_code, '/') - 1));

			if (!file_exists($dir_iso_code))
			{
				mkdir($dir_iso_code);
				file_put_contents($dir_iso_code.'/index.php', Tools::getDefaultIndexContent());
			}

			if (Tools::file_exists_cache($file_en))
				copy($file_en, $file_iso_code);
		}
	}

	/**
	 * Move theme translations in selected themes
	 *
	 * @param array $files
	 * @param array $themes_selected
	 */
	public function checkAndAddThemesFiles($files, $themes_selected)
	{
		foreach ($files as $file)
		{
			// Check if file is a file theme
			if (preg_match('#^themes\/([a-z0-9]+)\/lang\/#Ui', $file['filename'], $matches))
			{
				$slash_pos = strrpos($file['filename'], '/');
				$name_file = substr($file['filename'], -(strlen($file['filename']) - $slash_pos - 1));
				$name_default_theme = $matches[1];
				$deleted_old_theme = false;

				// Get the old file theme
				if (file_exists(_PS_THEME_DIR_.'lang/'.$name_file))
					$theme_file_old = _PS_THEME_DIR_.'lang/'.$name_file;
				else
				{
					$deleted_old_theme = true;
					$theme_file_old = str_replace(self::DEFAULT_THEME_NAME, $name_default_theme, _PS_THEME_DIR_.'lang/'.$name_file);
				}

				// Move the old file theme in the new folder
				foreach ($themes_selected as $theme_name)
					if (file_exists($theme_file_old))
						copy($theme_file_old, str_replace($name_default_theme, $theme_name, $theme_file_old));

				if ($deleted_old_theme)
					@unlink($theme_file_old);
			}
		}
	}

	/**
	 * Add new translations tabs by code ISO
	 *
	 * @param array $iso_code
	 * @param array $files
	 */
	public static function addNewTabs($iso_code, $files)
	{
		$errors = array();
		foreach ($files as $file)
		{
			// Check if file is a file theme
			if (preg_match('#^translations\/'.$iso_code.'\/tabs.php#Ui', $file['filename'], $matches) && Validate::isLanguageIsoCode($iso_code))
			{
				// Include array width new translations tabs
				$_TABS = array();
				clearstatcache();
				if (file_exists(_PS_ROOT_DIR_.DIRECTORY_SEPARATOR.$file['filename']))
					 include_once(_PS_ROOT_DIR_.DIRECTORY_SEPARATOR.$file['filename']);
				
				if (count($_TABS))
				{
					foreach ($_TABS as $class_name => $translations)
					{
						// Get instance of this tab by class name
						$tab = Tab::getInstanceFromClassName($class_name);
						//Check if class name exists
						if (isset($tab->class_name) && !empty($tab->class_name))
						{
							$id_lang = Language::getIdByIso($iso_code);
							$tab->name[(int)$id_lang] = $translations;
							
							// Do not crash at intall
							if (!isset($tab->name[Configuration::get('PS_LANG_DEFAULT')]))
								$tab->name[(int)Configuration::get('PS_LANG_DEFAULT')] = $translations;

							if (!Validate::isGenericName($tab->name[(int)$id_lang]))
								$errors[] = sprintf(Tools::displayError('Tab "%s" is not valid'), $tab->name[(int)$id_lang]);
							else
								$tab->update();
						}
					}
				}
			}
		}
		return $errors;
	}
	
	public static function checkTranslationFile($content)
	{
		$lines = array_map('trim', explode("\n", $content));
		$global = false;
		foreach ($lines as $line)
		{
			// PHP tags
			if (in_array($line, array('<?php', '?>', '')))
				continue;
			
			// Global variable declaration
			if (!$global && preg_match('/^global\s+\$([a-z0-9-_]+)\s*;$/i', $line, $matches))
			{
				$global = $matches[1];
				continue;
			}
			// Global variable initialization
			if ($global != false && preg_match('/^\$'.preg_quote($global, '/').'\s*=\s*array\(\s*\)\s*;$/i', $line))
				continue;
				
			// Global variable initialization without declaration
			if (!$global && preg_match('/^\$([a-z0-9-_]+)\s*=\s*array\(\s*\)\s*;$/i', $line, $matches))
			{
				$global = $matches[1];
				continue;
			}
			
			// Assignation
			if (preg_match('/^\$'.preg_quote($global, '/').'\[\''._PS_TRANS_PATTERN_.'\'\]\s*=\s*\''._PS_TRANS_PATTERN_.'\'\s*;$/i', $line))
				continue;
				
			// Sometimes the global variable is returned...
			if (preg_match('/^return\s+\$'.preg_quote($global, '/').'\s*;$/i', $line, $matches))
				continue;
			return false;
		}
		return true;
	}

	public function submitImportLang()
	{
		if (!isset($_FILES['file']['tmp_name']) || !$_FILES['file']['tmp_name'])
			$this->errors[] = Tools::displayError('No file has been selected.');
		else
		{
			require_once(_PS_TOOL_DIR_.'tar/Archive_Tar.php');
			$gz = new Archive_Tar($_FILES['file']['tmp_name'], true);
			$filename = $_FILES['file']['name'];
			$iso_code = str_replace(array('.tar.gz', '.gzip'), '', $filename);
			if (Validate::isLangIsoCode($iso_code))
			{
				$themes_selected = Tools::getValue('theme', array(self::DEFAULT_THEME_NAME));
				$files_list = AdminTranslationsController::filterTranslationFiles($gz->listContent());
				$files_paths = AdminTranslationsController::filesListToPaths($files_list);

				$uniqid = uniqid();
				$sandbox = _PS_CACHE_DIR_.'sandbox'.DIRECTORY_SEPARATOR.$uniqid.DIRECTORY_SEPARATOR;
				if ($gz->extractList($files_paths, $sandbox))
				{
					foreach ($files_list as $file2check)
					{
						//don't validate index.php, will be overwrite when extract in translation directory
						if (pathinfo($file2check['filename'], PATHINFO_BASENAME) == 'index.php')
							continue;
						
						if (preg_match('@^[0-9a-z-_/\\\\]+\.php$@i', $file2check['filename']))
						{
							if (!AdminTranslationsController::checkTranslationFile(file_get_contents($sandbox.$file2check['filename'])))
								$this->errors[] = sprintf(Tools::displayError('Validation failed for: %s'), $file2check['filename']);
						}
						elseif (!preg_match('@^[0-9a-z-_/\\\\]+\.(html|tpl|txt)$@i', $file2check['filename']))
							$this->errors[] = sprintf(Tools::displayError('Unidentified file found: %s'), $file2check['filename']);
					}
					Tools::deleteDirectory($sandbox, true);
				}
				
				$i = 0;
				$tmp_array = array();
				foreach ($files_paths as $files_path)
				{
					$path = dirname($files_path);
					if (is_dir(_PS_TRANSLATIONS_DIR_.'../'.$path) && !is_writable(_PS_TRANSLATIONS_DIR_.'../'.$path) && !in_array($path, $tmp_array))
					{
						$this->errors[] = (!$i++? Tools::displayError('The archive cannot be extracted.').' ' : '').Tools::displayError('The server does not have permissions for writing.').' '.sprintf(Tools::displayError('Please check rights for %s'), $path);
						$tmp_array[] = $path;
					}

				}

				if (count($this->errors))
					return false;

				if ($error = $gz->extractList($files_paths, _PS_TRANSLATIONS_DIR_.'../'))
				{
					if (is_object($error) && !empty($error->message))
						$this->errors[] = Tools::displayError('The archive cannot be extracted.'). ' '.$error->message;
					else
					{
						foreach ($files_list as $file2check)
							if (pathinfo($file2check['filename'], PATHINFO_BASENAME) == 'index.php' && file_put_contents(_PS_TRANSLATIONS_DIR_.'../'.$file2check['filename'], Tools::getDefaultIndexContent()))
								continue;

						// Clear smarty modules cache
						Tools::clearCache();
	
						if (Validate::isLanguageFileName($filename))
						{
							if (!Language::checkAndAddLanguage($iso_code))
								$conf = 20;
							else
							{
								// Reset cache 
								Language::loadLanguages();
								
								AdminTranslationsController::checkAndAddMailsFiles($iso_code, $files_list);
								$this->checkAndAddThemesFiles($files_list, $themes_selected);
								$tab_errors = AdminTranslationsController::addNewTabs($iso_code, $files_list);
								
								if (count($tab_errors))
								{
									$this->errors += $tab_errors;
									return false;
								}
							}
						}
						$this->redirect(false, (isset($conf) ? $conf : '15'));
					}
				}
				$this->errors[] = Tools::displayError('The archive cannot be extracted.');
			}
			else
				$this->errors[] = sprintf(Tools::displayError('ISO CODE invalid "%1$s" for the following file: "%2$s"'), $iso_code, $filename);
		}
	}

	/**
	* Filter the translation files contained in a .gzip pack
	* and return only the ones that we want.
	*
	* Right now the function only needs to check that
	* the modules for which we want to add translations
	* are present on the shop (installed or not).
	*
	* $list is the output of Archive_Tar::listContent()
	*/
	public static function filterTranslationFiles($list)
	{
		$kept = array();
		foreach ($list as $file)
		{
			if ('index.php' == basename($file['filename']))
				continue;
			if (preg_match('#^modules/([^/]+)/#', $file['filename'], $m))
			{
				if (is_dir(_PS_MODULE_DIR_.$m[1]))
					$kept[] = $file;
			}
			else
				$kept[] = $file;
		}
		return $kept;
	}

	/**
	* Turn the list returned by 
	* AdminTranslationsController::filterTranslationFiles()
	* into a list of paths that can be passed to 
	* Archive_Tar::extractList()
	*/
	public static function filesListToPaths($list)
	{
		$paths = array();
		foreach ($list as $item)
			$paths[] = $item['filename'];
		return $paths;
	}

	public function submitAddLang()
	{
		$arr_import_lang = explode('|', Tools::getValue('params_import_language')); /* 0 = Language ISO code, 1 = PS version */
		if (Validate::isLangIsoCode($arr_import_lang[0]))
		{
			$array_stream_context = @stream_context_create(array('http' => array('method' => 'GET', 'timeout' => 10)));
			$content = Tools::file_get_contents('http://www.prestashop.com/download/lang_packs/gzip/'.$arr_import_lang[1].'/'.Tools::strtolower($arr_import_lang[0]).'.gzip', false, $array_stream_context);
			if ($content)
			{
				$file = _PS_TRANSLATIONS_DIR_.$arr_import_lang[0].'.gzip';
				if ((bool)@file_put_contents($file, $content))
				{
					require_once(_PS_TOOL_DIR_.'/tar/Archive_Tar.php');
					$gz = new Archive_Tar($file, true);
					$files_list = AdminTranslationsController::filterTranslationFiles($gz->listContent());
					if ($error = $gz->extractList(AdminTranslationsController::filesListToPaths($files_list), _PS_TRANSLATIONS_DIR_.'../'))
					{
						if (is_object($error) && !empty($error->message))
							$this->errors[] = Tools::displayError('The archive cannot be extracted.'). ' '.$error->message;
						else
						{
							if (!Language::checkAndAddLanguage($arr_import_lang[0]))
								$conf = 20;
							else
							{
								// Reset cache 
								Language::loadLanguages();
								// Clear smarty modules cache
								Tools::clearCache();

								AdminTranslationsController::checkAndAddMailsFiles($arr_import_lang[0], $files_list);
								if ($tab_errors = AdminTranslationsController::addNewTabs($arr_import_lang[0], $files_list))
									$this->errors += $tab_errors;
							}
							if (!unlink($file))
								$this->errors[] = sprintf(Tools::displayError('Cannot delete the archive %s.'), $file);
	
							$this->redirect(false, (isset($conf) ? $conf : '15'));
						}
					}
					elseif (!unlink($file))
							$this->errors[] = sprintf(Tools::displayError('Cannot delete the archive %s.'), $file);
				}
				else
					$this->errors[] = Tools::displayError('The server does not have permissions for writing.').' '.sprintf(Tools::displayError('Please check rights for %s'), dirname($file));
			}
			else
				$this->errors[] = Tools::displayError('Language not found.');
		}
		else
			$this->errors[] = Tools::displayError('Invalid parameter.');
	}

	/**
	 * This method check each file (tpl or php file), get its sentences to translate,
	 * compare with posted values and write in iso code translation file.
	 *
	 * @param string $file_name
	 * @param array $files
	 * @param string $theme_name
	 * @param string $module_name
	 * @param string|boolean $dir
	 * @return void
	 */
	protected function findAndWriteTranslationsIntoFile($file_name, $files, $theme_name, $module_name, $dir = false)
	{
		// These static vars allow to use file to write just one time.
		static $cache_file = array();
		static $str_write = '';
		static $array_check_duplicate = array();

		// Set file_name in static var, this allow to open and wright the file just one time
		if (!isset($cache_file[$theme_name.'-'.$file_name]))
		{
			$str_write = '';
			$cache_file[$theme_name.'-'.$file_name] = true;
			if (!Tools::file_exists_cache(dirname($file_name)))
				mkdir(dirname($file_name), 0777, true);
			if (!Tools::file_exists_cache($file_name))
				file_put_contents($file_name, '');
			if (!is_writable($file_name))
				throw new PrestaShopException(sprintf(
					Tools::displayError('Cannot write to the theme\'s language file (%s). Please check write permissions.'),
					$file_name
				));

			// this string is initialized one time for a file
			$str_write .= "<?php\n\nglobal \$_MODULE;\n\$_MODULE = array();\n";
			$array_check_duplicate = array();
		}

		foreach ($files as $file)
		{
			if (preg_match('/^(.*)\.(tpl|php)$/', $file) && Tools::file_exists_cache($dir.$file) && !in_array($file, self::$ignore_folder))
			{
				// Get content for this file
				$content = file_get_contents($dir.$file);

				// Get file type
				$type_file = substr($file, -4) == '.tpl' ? 'tpl' : 'php';

				// Parse this content
				$matches = $this->userParseFile($content, $this->type_selected, $type_file, $module_name);

				// Write each translation on its module file
				$template_name = substr(basename($file), 0, -4);

				foreach ($matches as $key)
				{
					if ($theme_name)
					{
						$post_key = md5(strtolower($module_name).'_'.strtolower($theme_name).'_'.strtolower($template_name).'_'.md5($key));
						$pattern = '\'<{'.strtolower($module_name).'}'.strtolower($theme_name).'>'.strtolower($template_name).'_'.md5($key).'\'';
					}
					else
					{
						$post_key = md5(strtolower($module_name).'_'.strtolower($template_name).'_'.md5($key));
						$pattern = '\'<{'.strtolower($module_name).'}prestashop>'.strtolower($template_name).'_'.md5($key).'\'';
					}

					if (array_key_exists($post_key, $_POST) && !empty($_POST[$post_key]) && !in_array($pattern, $array_check_duplicate))
					{
						$array_check_duplicate[] = $pattern;
						$str_write .= '$_MODULE['.$pattern.'] = \''.pSQL(str_replace(array("\r\n", "\r", "\n"), ' ', $_POST[$post_key])).'\';'."\n";
						$this->total_expression++;
					}
				}
			}
		}

		if (isset($cache_file[$theme_name.'-'.$file_name]) && $str_write != "<?php\n\nglobal \$_MODULE;\n\$_MODULE = array();\n")
			file_put_contents($file_name, $str_write);
	}

	/**
	 * Clear the list of module file by type (file or directory)
	 *
	 * @param $files : list of files
	 * @param string $type_clear (file|directory)
	 * @param string $path
	 * @return array : list of a good files
	 */
	public function clearModuleFiles($files, $type_clear = 'file', $path = '')
	{
		// List of directory which not must be parsed
		$arr_exclude = array('img', 'js', 'mails','override');

		// List of good extention files
		$arr_good_ext = array('.tpl', '.php');

		foreach ($files as $key => $file)
		{
			if ($file{0} === '.' || in_array(substr($file, 0, strrpos($file, '.')), $this->all_iso_lang))
				unset($files[$key]);
			else if ($type_clear === 'file' && !in_array(substr($file, strrpos($file, '.')), $arr_good_ext))
				unset($files[$key]);
			else if ($type_clear === 'directory' && (!is_dir($path.$file) || in_array($file, $arr_exclude)))
				unset($files[$key]);
		}

		return $files;
	}

	/**
	 * This method get translation for each files of a module,
	 * compare with global $_MODULES array and fill AdminTranslations::modules_translations array
	 * With key as English sentences and values as their iso code translations.
	 *
	 * @param array $files
	 * @param string $theme_name
	 * @param string $module_name
	 * @param string|boolean $dir
	 * @param string $iso_code
	 * @return void
	 */
	protected function findAndFillTranslations($files, $theme_name, $module_name, $dir = false)
	{
		$name_var = $this->translations_informations[$this->type_selected]['var'];

		// added for compatibility
		$GLOBALS[$name_var] = array_change_key_case($GLOBALS[$name_var]);

		// Thank to this var similar keys are not duplicate
		// in AndminTranslation::modules_translations array
		// see below
		$array_check_duplicate = array();
		foreach ($files as $file)
		{
			if ((preg_match('/^(.*).tpl$/', $file) || preg_match('/^(.*).php$/', $file)) && Tools::file_exists_cache($file_path = $dir.$file))
			{
				// Get content for this file
				$content = file_get_contents($file_path);

				// Module files can now be ignored by adding this string in a file
				if (strpos($content, 'IGNORE_THIS_FILE_FOR_TRANSLATION') !== false)
					continue;

				// Get file type
				$type_file = substr($file, -4) == '.tpl' ? 'tpl' : 'php';

				// Parse this content
				$matches = $this->userParseFile($content, $this->type_selected, $type_file, $module_name);

				// Write each translation on its module file
				$template_name = substr(basename($file), 0, -4);

				foreach ($matches as $key)
				{
					$md5_key = md5($key);
					$module_key = '<{'.Tools::strtolower($module_name).'}'.strtolower($theme_name).'>'.Tools::strtolower($template_name).'_'.$md5_key;
					$default_key = '<{'.Tools::strtolower($module_name).'}prestashop>'.Tools::strtolower($template_name).'_'.$md5_key;
					// to avoid duplicate entry
					if (!in_array($module_key, $array_check_duplicate))
					{
						$array_check_duplicate[] = $module_key;
						if (!isset($this->modules_translations[$theme_name][$module_name][$template_name][$key]['trad']))
							$this->total_expression++;
						if ($theme_name && array_key_exists($module_key, $GLOBALS[$name_var]))
							$this->modules_translations[$theme_name][$module_name][$template_name][$key]['trad'] = html_entity_decode($GLOBALS[$name_var][$module_key], ENT_COMPAT, 'UTF-8');
						elseif (array_key_exists($default_key, $GLOBALS[$name_var]))
							$this->modules_translations[$theme_name][$module_name][$template_name][$key]['trad'] = html_entity_decode($GLOBALS[$name_var][$default_key], ENT_COMPAT, 'UTF-8');
						else
						{
							$this->modules_translations[$theme_name][$module_name][$template_name][$key]['trad'] = '';
							$this->missing_translations++;
						}
						$this->modules_translations[$theme_name][$module_name][$template_name][$key]['use_sprintf'] = $this->checkIfKeyUseSprintf($key);
					}
				}
			}
		}
	}

	/**
	 * Get list of files which must be parsed by directory and by type of translations
	 *
	 * @return array : list of files by directory
	 */
	public function getFileToParseByTypeTranslation()
	{
		$directories = array();

		switch ($this->type_selected)
		{
			case 'front':
				$directories['tpl'] = array(_PS_ALL_THEMES_DIR_ => scandir(_PS_ALL_THEMES_DIR_));
				self::$ignore_folder[] = 'modules';
				$directories['tpl'] = array_merge($directories['tpl'], $this->listFiles(_PS_THEME_SELECTED_DIR_));
				if (isset($directories['tpl'][_PS_THEME_SELECTED_DIR_.'pdf/']))
					unset($directories['tpl'][_PS_THEME_SELECTED_DIR_.'pdf/']);

				if (Tools::file_exists_cache(_PS_THEME_OVERRIDE_DIR_))
					$directories['tpl'] = array_merge($directories['tpl'], $this->listFiles(_PS_THEME_OVERRIDE_DIR_));

				break;

			case 'back':
				$directories = array(
					'php' => array(
						_PS_ADMIN_CONTROLLER_DIR_ => scandir(_PS_ADMIN_CONTROLLER_DIR_),
						_PS_OVERRIDE_DIR_.'controllers/admin/' => scandir(_PS_OVERRIDE_DIR_.'controllers/admin/'),
						_PS_CLASS_DIR_.'helper/' => scandir(_PS_CLASS_DIR_.'helper/'),
						_PS_CLASS_DIR_.'controller/' => array('AdminController.php'),
						_PS_CLASS_DIR_ => array('PaymentModule.php')
					),
					'tpl' => $this->listFiles(_PS_ADMIN_DIR_.DIRECTORY_SEPARATOR.'themes/'),
					'specific' => array(
						_PS_ADMIN_DIR_.DIRECTORY_SEPARATOR => array(
							'header.inc.php',
							'footer.inc.php',
							'index.php',
							'functions.php'
						)
					)
				);

				// For translate the template which are overridden
				if (file_exists(_PS_OVERRIDE_DIR_.'controllers'.DIRECTORY_SEPARATOR.'admin'.DIRECTORY_SEPARATOR.'templates'))
					$directories['tpl'] = array_merge($directories['tpl'], $this->listFiles(_PS_OVERRIDE_DIR_.'controllers'.DIRECTORY_SEPARATOR.'admin'.DIRECTORY_SEPARATOR.'templates'));

				break;

			case 'errors':
				$directories['php'] = array(
					_PS_ROOT_DIR_ => scandir(_PS_ROOT_DIR_),
					_PS_ADMIN_DIR_.DIRECTORY_SEPARATOR => scandir(_PS_ADMIN_DIR_.DIRECTORY_SEPARATOR),
					_PS_FRONT_CONTROLLER_DIR_ => scandir(_PS_FRONT_CONTROLLER_DIR_),
					_PS_ADMIN_CONTROLLER_DIR_ => scandir(_PS_ADMIN_CONTROLLER_DIR_),
					_PS_OVERRIDE_DIR_.'controllers/front/' => scandir(_PS_OVERRIDE_DIR_.'controllers/front/'),
					_PS_OVERRIDE_DIR_.'controllers/admin/' => scandir(_PS_OVERRIDE_DIR_.'controllers/admin/')
				);

				// Get all files for folders classes/ and override/classes/ recursively
				$directories['php'] = array_merge($directories['php'], $this->listFiles(_PS_CLASS_DIR_, array(), 'php'));
				$directories['php'] = array_merge($directories['php'], $this->listFiles(_PS_OVERRIDE_DIR_.'classes/', array(), 'php'));
				break;

			case 'fields':
				$directories['php'] = $this->listFiles(_PS_CLASS_DIR_, array(), 'php');
				break;

			case 'pdf':
				$tpl_theme = Tools::file_exists_cache(_PS_THEME_SELECTED_DIR_.'pdf/') ? scandir(_PS_THEME_SELECTED_DIR_.'pdf/') : array();
				$directories = array(
					'php' => array(
						_PS_CLASS_DIR_.'pdf/' => scandir(_PS_CLASS_DIR_.'pdf/'),
						_PS_OVERRIDE_DIR_.'classes/pdf/' => scandir(_PS_OVERRIDE_DIR_.'classes/pdf/')
					),
					'tpl' => array(
						_PS_PDF_DIR_ => scandir(_PS_PDF_DIR_),
						_PS_THEME_SELECTED_DIR_.'pdf/' => $tpl_theme
					)
				);
				break;

			case 'mails':
				$directories['php'] = array(
					_PS_FRONT_CONTROLLER_DIR_ => scandir(_PS_FRONT_CONTROLLER_DIR_),
					_PS_ADMIN_CONTROLLER_DIR_ => scandir(_PS_ADMIN_CONTROLLER_DIR_),
					_PS_OVERRIDE_DIR_.'controllers/front/' => scandir(_PS_OVERRIDE_DIR_.'controllers/front/'),
					_PS_OVERRIDE_DIR_.'controllers/admin/' => scandir(_PS_OVERRIDE_DIR_.'controllers/admin/'),
					_PS_ADMIN_DIR_.DIRECTORY_SEPARATOR => scandir(_PS_ADMIN_DIR_.DIRECTORY_SEPARATOR),
					_PS_ADMIN_DIR_.DIRECTORY_SEPARATOR.'tabs/' => scandir(_PS_ADMIN_DIR_.DIRECTORY_SEPARATOR.'/tabs')
				);

				// Get all files for folders classes/ and override/classes/ recursively
				$directories['php'] = array_merge($directories['php'], $this->listFiles(_PS_CLASS_DIR_, array(), 'php'));
				$directories['php'] = array_merge($directories['php'], $this->listFiles(_PS_OVERRIDE_DIR_.'classes/', array(), 'php'));

				$directories['php'] = array_merge($directories['php'], $this->getModulesHasMails());
				break;

		}

		return $directories;
	}

	/**
	 * This method parse a file by type of translation and type file
	 *
	 * @param $content
	 * @param $type_translation : front, back, errors, modules...
	 * @param string|bool $type_file : (tpl|php)
	 * @param string $module_name : name of the module
	 * @return return $matches
	 */
	protected function userParseFile($content, $type_translation, $type_file = false, $module_name = '')
	{
		switch ($type_translation)
		{
			case 'front':
					// Parsing file in Front office
					$regex = '/\{l\s*s=([\'\"])'._PS_TRANS_PATTERN_.'\1(\s*sprintf=.*)?(\s*js=1)?\s*\}/U';
				break;

			case 'back':
					// Parsing file in Back office
					if ($type_file == 'php')
						$regex = '/this->l\((\')'._PS_TRANS_PATTERN_.'\'[\)|\,]/U';
					else if ($type_file == 'specific')
						$regex = '/Translate::getAdminTranslation\((\')'._PS_TRANS_PATTERN_.'\'(?:,.*)*\)/U';
					else
						$regex = '/\{l\s*s\s*=([\'\"])'._PS_TRANS_PATTERN_.'\1(\s*sprintf=.*)?(\s*js=1)?(\s*slashes=1)?.*\}/U';
				break;

			case 'errors':
					// Parsing file for all errors syntax
					$regex = '/Tools::displayError\((\')'._PS_TRANS_PATTERN_.'\'(,\s*(.+))?\)/U';
				break;

			case 'modules':
					// Parsing modules file
					if ($type_file == 'php')
						$regex = '/->l\((\')'._PS_TRANS_PATTERN_.'\'(, ?\'(.+)\')?(, ?(.+))?\)/U';
					else
						// In tpl file look for something that should contain mod='module_name' according to the documentation
						$regex = '/\{l\s*s=([\'\"])'._PS_TRANS_PATTERN_.'\1.*\s+mod=\''.$module_name.'\'.*\}/U';
				break;

			case 'pdf':
					// Parsing PDF file
					if ($type_file == 'php')
						$regex = '/HTMLTemplate.*::l\((\')'._PS_TRANS_PATTERN_.'\'[\)|\,]/U';
					else
						$regex = '/\{l\s*s=([\'\"])'._PS_TRANS_PATTERN_.'\1(\s*sprintf=.*)?(\s*js=1)?(\s*pdf=\'true\')?\s*\}/U';
				break;
		}

		if (!is_array($regex))
			$regex = array($regex);

		$strings = array();
		foreach ($regex as $regex_row)
		{
			$matches = array();
			$n = preg_match_all($regex_row, $content, $matches);
			for ($i = 0; $i < $n; $i += 1)
			{
				$quote = $matches[1][$i];
				$string = $matches[2][$i];

				if ($quote === '"')
				{
					// Escape single quotes because the core will do it when looking for the translation of this string
					$string = str_replace('\'', '\\\'', $string);
					// Unescape double quotes
					$string = preg_replace('/\\\\+"/', '"', $string);
				}

				$strings[] = $string;
			}
		}

		return array_unique($strings);
	}

	/**
	 * Get all translations informations for all type of translations
	 *
	 * array(
	 * 	'type' => array(
	 * 		'name' => string : title for the translation type,
	 * 		'var' => string : name of var for the translation file,
	 * 		'dir' => string : dir of translation file
	 * 		'file' => string : file name of translation file
	 * 	)
	 * )
	 */
	public function getTranslationsInformations()
	{
		$this->translations_informations = array(
			'front' => array(
				'name' => $this->l('Front Office translations'),
				'var' => '_LANG',
				'dir' => defined('_PS_THEME_SELECTED_DIR_') ? _PS_THEME_SELECTED_DIR_.'lang/' : '',
				'file' => $this->lang_selected->iso_code.'.php'
			),
			'back' => array(
				'name' => $this->l('Back Office translations'),
				'var' => '_LANGADM',
				'dir' => _PS_TRANSLATIONS_DIR_.$this->lang_selected->iso_code.'/',
				'file' => 'admin.php'
			),
			'errors' => array(
				'name' => $this->l('Error message translations'),
				'var' => '_ERRORS',
				'dir' => _PS_TRANSLATIONS_DIR_.$this->lang_selected->iso_code.'/',
				'file' => 'errors.php'
			),
			'fields' => array(
				'name' => $this->l('Field name translations'),
				'var' => '_FIELDS',
				'dir' => _PS_TRANSLATIONS_DIR_.$this->lang_selected->iso_code.'/',
				'file' => 'fields.php'
			),
			'modules' => array(
				'name' => $this->l('Installed modules translations'),
				'var' => '_MODULES',
				'dir' => _PS_MODULE_DIR_,
				'file' => ''		
			),
			'pdf' => array(
				'name' => $this->l('PDF translations'),
				'var' => '_LANGPDF',
				'dir' => _PS_TRANSLATIONS_DIR_.$this->lang_selected->iso_code.'/',
				'file' => 'pdf.php'
			),
			'mails' => array(
				'name' => $this->l('Email templates translations'),
				'var' => '_LANGMAIL',
				'dir' => _PS_MAIL_DIR_.$this->lang_selected->iso_code.'/',
				'file' => 'lang.php'
			)
		);
			
		if (defined('_PS_THEME_SELECTED_DIR_'))
		{
			$this->translations_informations['modules']['override'] = array('dir' => _PS_THEME_SELECTED_DIR_.'modules/', 'file' => '');
			$this->translations_informations['pdf']['override'] = array('dir' => _PS_THEME_SELECTED_DIR_.'pdf/lang/', 'file' => $this->lang_selected->iso_code.'.php');
			$this->translations_informations['mails']['override'] = array('dir' => _PS_THEME_SELECTED_DIR_.'mails/'.$this->lang_selected->iso_code.'/', 'file' => 'lang.php');
		}
	}

	/**
	 * Get all informations on : languages, theme and the translation type.
	 */
	public function getInformations()
	{
		// Get all Languages
		$this->languages = Language::getLanguages(false);

		// Get all iso_code of languages
		foreach ($this->languages as $language)
			$this->all_iso_lang[] = $language['iso_code'];

		// Get all themes
		$this->themes = Theme::getThemes();

		// Get folder name of theme
		if (($theme = Tools::getValue('theme')) && !is_array($theme))
		{
			$theme_exists = $this->theme_exists($theme);
			if (!$theme_exists)
				throw new PrestaShopException(sprintf(Tools::displayError('Invalid theme "%s"'), Tools::safeOutput($theme)));
			$this->theme_selected = Tools::safeOutput($theme);
		}

		// Set the path of selected theme
		if ($this->theme_selected)
			define('_PS_THEME_SELECTED_DIR_', _PS_ROOT_DIR_.'/themes/'.$this->theme_selected.'/');
		else
			define('_PS_THEME_SELECTED_DIR_', '');

		// Get type of translation
		if (($type = Tools::getValue('type')) && !is_array($type))
			$this->type_selected = strtolower(Tools::safeOutput($type));

		// Get selected language
		if (Tools::getValue('lang') || Tools::getValue('iso_code'))
		{
			$iso_code = Tools::getValue('lang') ? Tools::getValue('lang') : Tools::getValue('iso_code');

			if (!Validate::isLangIsoCode($iso_code) || !in_array($iso_code, $this->all_iso_lang))
				throw new PrestaShopException(sprintf(Tools::displayError('Invalid iso code "%s"'), Tools::safeOutput($iso_code)));

			$this->lang_selected = new Language((int)Language::getIdByIso($iso_code));
		}
		else
			$this->lang_selected = new Language((int)Language::getIdByIso('en'));

		// Get all information for translations
		$this->getTranslationsInformations();
	}

	public function renderKpis()
	{
		$time = time();
		$kpis = array();

		/* The data generation is located in AdminStatsControllerCore */

		$helper = new HelperKpi();
		$helper->id = 'box-languages';
		$helper->icon = 'icon-microphone';
		$helper->color = 'color1';
		$helper->href = $this->context->link->getAdminLink('AdminLanguages');
		$helper->title = $this->l('Enabled Languages', null, null, false);
		if (ConfigurationKPI::get('ENABLED_LANGUAGES') !== false)
			$helper->value = ConfigurationKPI::get('ENABLED_LANGUAGES');
		if (ConfigurationKPI::get('ENABLED_LANGUAGES_EXPIRE') < $time)
			$helper->source = $this->context->link->getAdminLink('AdminStats').'&ajax=1&action=getKpi&kpi=enabled_languages';
		$kpis[] = $helper->generate();

		$helper = new HelperKpi();
		$helper->id = 'box-country';
		$helper->icon = 'icon-home';
		$helper->color = 'color2';
		$helper->title = $this->l('Main Country', null, null, false);
		$helper->subtitle = $this->l('30 Days', null, null, false);
		if (ConfigurationKPI::get('MAIN_COUNTRY', $this->context->language->id) !== false)
			$helper->value = ConfigurationKPI::get('MAIN_COUNTRY', $this->context->language->id);
		if (ConfigurationKPI::get('MAIN_COUNTRY_EXPIRE', $this->context->language->id) < $time)
			$helper->source = $this->context->link->getAdminLink('AdminStats').'&ajax=1&action=getKpi&kpi=main_country';
		$kpis[] = $helper->generate();

		$helper = new HelperKpi();
		$helper->id = 'box-translations';
		$helper->icon = 'icon-list';
		$helper->color = 'color3';
		$helper->title = $this->l('Front Office Translations', null, null, false);
		if (ConfigurationKPI::get('FRONTOFFICE_TRANSLATIONS') !== false)
			$helper->value = ConfigurationKPI::get('FRONTOFFICE_TRANSLATIONS');
		if (ConfigurationKPI::get('FRONTOFFICE_TRANSLATIONS_EXPIRE') < $time)
			$helper->source = $this->context->link->getAdminLink('AdminStats').'&ajax=1&action=getKpi&kpi=frontoffice_translations';
		$kpis[] = $helper->generate();

		$helper = new HelperKpiRow();
		$helper->kpis = $kpis;
		return $helper->generate();
	}

	/**
	 * AdminController::postProcess() override
	 * @see AdminController::postProcess()
	 */
	public function postProcess()
	{
		$this->getInformations();

		/* PrestaShop demo mode */
		if (_PS_MODE_DEMO_)
		{
			$this->errors[] = Tools::displayError('This functionality has been disabled.');
			return;
		}
		/* PrestaShop demo mode */

		try {
		
			if…