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Name File: controllerHttp.php

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<?php
/*
* 2007-2013 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  2007-2013 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

abstract class InstallControllerHttp
{
	/**
	 * @var array List of installer steps
	 */
	protected static $steps = array('welcome', 'license', 'system', 'database', 'configure', 'process');

	protected static $instances = array();

	/**
	 * @var string Current step
	 */
	public $step;

	/**
	 * @var array List of errors
	 */
	public $errors = array();

	/**
	 * @var InstallController
	 */
	public $controller;

	/**
	 * @var InstallSession
	 */
	public $session;

	/**
	 * @var InstallLanguages
	 */
	public $language;

	/**
	 * @var bool If false, disable next button access
	 */
	public $next_button = true;

	/**
	 * @var bool If false, disable previous button access
	 */
	public $previous_button = true;

	/**
	 * @var InstallAbstractModel
	 */
	public $model;

	/**
	 * @var array Magic vars
	 */
	protected $__vars = array();

	/**
	 * Process form to go to next step
	 */
	abstract public function processNextStep();

	/**
	 * Validate current step
	 */
	abstract public function validate();

	/**
	 * Display current step view
	 */
	abstract public function display();

	final public static function execute()
	{
		if (Tools::getValue('compile_templates'))
		{
			require_once (_PS_INSTALL_CONTROLLERS_PATH_.'http/smarty_compile.php');
			exit;
		}
		// Include all controllers
		foreach (self::$steps as $step)
		{
			if (!file_exists(_PS_INSTALL_CONTROLLERS_PATH_.'http/'.$step.'.php'))
				throw new PrestashopInstallerException("Controller file 'http/{$step}.php' not found");

			require_once _PS_INSTALL_CONTROLLERS_PATH_.'http/'.$step.'.php';
			$classname = 'InstallControllerHttp'.$step;
			self::$instances[$step] = new $classname($step);
		}

		$session = InstallSession::getInstance();
		if (!$session->last_step || !in_array($session->last_step, self::$steps))
			$session->last_step = self::$steps[0];

		// Set timezone
		if ($session->shop_timezone)
			@date_default_timezone_set($session->shop_timezone);

		// Get current step (check first if step is changed, then take it from session)
		if (Tools::getValue('step'))
		{
			$current_step = Tools::getValue('step');
			$session->step = $current_step;
		}
		else
			$current_step = (isset($session->step)) ? $session->step : self::$steps[0];

		if (!in_array($current_step, self::$steps))
			$current_step = self::$steps[0];

		// Validate all steps until current step. If a step is not valid, use it as current step.
		foreach (self::$steps as $check_step)
		{
			// Do not validate current step
			if ($check_step == $current_step)
				break;

			if (!self::$instances[$check_step]->validate())
			{
				$current_step = $check_step;
				$session->step = $current_step;
				$session->last_step = $current_step;
				break;
			}
		}

		// Submit form to go to next step
		if (Tools::getValue('submitNext'))
		{
			self::$instances[$current_step]->processNextStep();

			// If current step is validated, let's go to next step
			if (self::$instances[$current_step]->validate())
				$current_step = self::$instances[$current_step]->findNextStep();
			$session->step = $current_step;

			// Change last step
			if (self::getStepOffset($current_step) > self::getStepOffset($session->last_step))
				$session->last_step = $current_step;
		}
		// Go to previous step
		else if (Tools::getValue('submitPrevious') && $current_step != self::$steps[0])
		{
			$current_step = self::$instances[$current_step]->findPreviousStep($current_step);
			$session->step = $current_step;
		}

		self::$instances[$current_step]->process();
		self::$instances[$current_step]->display();
	}

	final public function __construct($step)
	{
		$this->step = $step;
		$this->session = InstallSession::getInstance();

		// Set current language
		$this->language = InstallLanguages::getInstance();
		$detect_language = $this->language->detectLanguage();
		if (isset($this->session->lang))
			$lang = $this->session->lang;
		else
			$lang = (isset($detect_language['primarytag'])) ? $detect_language['primarytag'] : false;

		if (!in_array($lang, $this->language->getIsoList()))
			$lang = 'en';
		$this->language->setLanguage($lang);

		$this->init();
	}

	/**
	 * Initialize model
	 */
	public function init()
	{
	}

	public function process()
	{
	}

	/**
	 * Get steps list
	 *
	 * @return array
	 */
	public function getSteps()
	{
		return self::$steps;
	}

	public function getLastStep()
	{
		return $this->session->last_step;
	}

	/**
	 * Find offset of a step by name
	 *
	 * @param string $step Step name
	 * @return int
	 */
	static public function getStepOffset($step)
	{
		static $flip = null;

		if (is_null($flip))
			$flip = array_flip(self::$steps);
		return $flip[$step];
	}

	/**
	 * Make a HTTP redirection to a step
	 *
	 * @param string $step
	 */
	public function redirect($step)
	{
		header('location: index.php?step='.$step);
		exit;
	}

	/**
	 * Get translated string
	 *
	 * @param string $str String to translate
	 * @param ... All other params will be used with sprintf
	 * @return string
	 */
	public function l($str)
	{
		$args = func_get_args();
		return call_user_func_array(array($this->language, 'l'), $args);
	}

	/**
	 * Find previous step
	 *
	 * @param string $step
	 */
	public function findPreviousStep()
	{
		return (isset(self::$steps[$this->getStepOffset($this->step) - 1])) ? self::$steps[$this->getStepOffset($this->step) - 1] : false;
	}

	/**
	 * Find next step
	 *
	 * @param string $step
	 */
	public function findNextStep()
	{
		$nextStep = (isset(self::$steps[$this->getStepOffset($this->step) + 1])) ? self::$steps[$this->getStepOffset($this->step) + 1] : false;
		if ($nextStep == 'system' && self::$instances[$nextStep]->validate())
			$nextStep = self::$instances[$nextStep]->findNextStep();
		return $nextStep;
	}

	/**
	 * Check if current step is first step in list of steps
	 *
	 * @return bool
	 */
	public function isFirstStep()
	{
		return self::getStepOffset($this->step) == 0;
	}

	/**
	 * Check if current step is last step in list of steps
	 *
	 * @return bool
	 */
	public function isLastStep()
	{
		return self::getStepOffset($this->step) == (count(self::$steps) - 1);
	}

	/**
	 * Check is given step is already finished
	 *
	 * @param string $step
	 * @return bool
	 */
	public function isStepFinished($step)
	{
		return self::getStepOffset($step) < self::getStepOffset($this->getLastStep());
	}

	/**
	 * Get telephone used for this language
	 *
	 * @return string
	 */
	public function getPhone()
	{
		return $this->language->getInformation('phone', false);
	}

	/**
	 * Get link to documentation for this language
	 *
	 * Enter description here ...
	 */
	public function getDocumentationLink()
	{
		return $this->language->getInformation('documentation');
	}

	/**
	 * Get link to forum for this language
	 *
	 * Enter description here ...
	 */
	public function getForumLink()
	{
		return $this->language->getInformation('forum');
	}

	/**
	 * Get link to blog for this language
	 *
	 * Enter description here ...
	 */
	public function getBlogLink()
	{
		return $this->language->getInformation('blog');
	}

	/**
	 * Get link to support for this language
	 *
	 * Enter description here ...
	 */
	public function getSupportLink()
	{
		return $this->language->getInformation('support');
	}

	public function getDocumentationUpgradeLink()
	{
		return $this->language->getInformation('documentation_upgrade', true);
	}

	/**
	 * Send AJAX response in JSON format {success: bool, message: string}
	 *
	 * @param bool $success
	 * @param string $message
	 */
	public function ajaxJsonAnswer($success, $message = '')
	{
		die(Tools::jsonEncode(array(
			'success' => (bool)$success,
			'message' => $message,
			// 'memory' => round(memory_get_peak_usage()/1024/1024, 2).' Mo',
		)));
	}

	/**
	 * Display a template
	 *
	 * @param string $template Template name
	 * @param bool $get_output Is true, return template html
	 * @return string
	 */
	public function displayTemplate($template, $get_output = false, $path = null)
	{
		if (!$path)
			$path = _PS_INSTALL_PATH_.'theme/views/';

		if (!file_exists($path.$template.'.phtml'))
			throw new PrestashopInstallerException("Template '{$template}.phtml' not found");

		if ($get_output)
			ob_start();

		include($path.$template.'.phtml');

		if ($get_output)
		{
			$content = ob_get_contents();
			ob_end_clean();
			return $content;
		}
	}

	public function &__get($varname)
	{
		if (isset($this->__vars[$varname]))
			$ref = &$this->__vars[$varname];
		else
		{
			$null = null;
			$ref = &$null;
		}
		return $ref;
	}

	public function __set($varname, $value)
	{
		$this->__vars[$varname] = $value;
	}

	public function __isset($varname)
	{
		return isset($this->__vars[$varname]);
	}

	public function __unset($varname)
	{
		unset($this->__vars[$varname]);
	}
}