<?
if (!defined("B_PROLOG_INCLUDED") || B_PROLOG_INCLUDED !== true) die();

/**
 * Bitrix Framework
 * @package bitrix
 * @subpackage crm
 * @copyright 2001-2014 Bitrix
 */

//use Bitrix\Main\Config;
use Bitrix\Main;
use Bitrix\Main\Localization\Loc;
use Bitrix\Main\Loader;

use Bitrix\Sale\Location\Admin\LocationHelper;
use Bitrix\Sale\Location\Admin\TypeHelper;
use Bitrix\Sale\Location\Admin\ExternalServiceHelper;

use Bitrix\Sale\Location\Import;

Loc::loadMessages(__FILE__);

class CBitrixCrmConfigLocationImport2Component extends CBitrixComponent
{
	protected $componentData = 	array();
	protected $dbResult = 		array();
	protected $errors = 		array('FATAL' => array(), 'NONFATAL' => array());

	protected $import = 		null;

	const LOC2_IMPORT_PERFORMED_OPTION = 'sale_locationpro_import_performed';

	/**
	 * Function checks and prepares all the parameters passed. Everything about $arParam modification is here.
	 * @param mixed[] $arParams List of unchecked parameters
	 * @return mixed[] Checked and valid parameters
	 */
	public function onPrepareComponentParams($arParams)
	{
		self::tryParseInt($arParams['INITIAL_TIME']);

		return $arParams;
	}

	/**
	 * Function checks if required modules installed. If not, throws an exception
	 * @throws Exception
	 * @return void
	 */
	protected static function checkRequiredModules()
	{
		$result = true;

		if(!Loader::includeModule('sale'))
		{
			$this->errors['FATAL'][] = Loc::getMessage("SALE_SLI_SALE_MODULE_NOT_INSTALL");
			$result = false;
		}

		return $result;
	}

	/**
	 * Function checks if user have basic permissions to launch the component
	 * @throws Exception
	 * @return void
	 */
	protected function checkPermissions()
	{
		$result = true;

		if ($GLOBALS['APPLICATION']->GetGroupRight("sale") < "W")
		{
			$this->errors['FATAL'][] = Loc::getMessage("SALE_SLI_SALE_MODULE_WRITE_ACCESS_DENIED");
			$result = false;
		}

		if(!LocationHelper::checkLocationEnabled())
		{
			$this->errors['FATAL'][] = 'Locations were disabled or data has not been converted';
			$result = false;
		}

		return $result;
	}

	/**
	 * Additional parameters check, if needed.
	 * @return void
	 */
	protected function checkParameters()
	{
		return true;
	}

	protected function prepareInstances()
	{
		$this->import = $this->getImportInstance(array(
			'INITIAL_TIME' => $this->arParams['INITIAL_TIME']
		));
	}

	/**
	 * Function makes some actions based on what is in $this->request
	 * @return void
	 */
	protected function performAction()
	{
		$this->dbResult['REQUEST'] = 	$this->getRequest();
		$requestMethod = 				$this->getRequestMethod();

		if($requestMethod == 'POST')
		{
			// action: file process
			if(isset($this->dbResult['REQUEST']['POST']['FILE_UPLOAD']))
			{
				try
				{
					$this->import->saveUserFile('IMPORT_FILE');
				}
				catch(Exception $e)
				{
					$this->errors['FATAL'][] =  $e->getMessage();
				}

				$this->dbResult['DISPLAY_FILE_UPLOAD_RESPONCE'] = true;
				$this->dbResult['FILE_UPLOAD_ID'] = preg_replace('#^[^a-zA-Z0-9-_]+$#', '', $this->dbResult['REQUEST']['POST']['FILE_UPLOAD']);
			}

			// action: drop all locations by pressing button
			if(isset($this->dbResult['REQUEST']['POST']['DROP_ALL']))
			{
				$this->import->deleteAll();
				LocalRedirect($this->arParams['PATH_TO_IMPORT']); // preserve from accidental pressing F5 in browser
			}
		}
	}

	/**
	 * Here we get some data that cannot be cached for a long time
	 * @return boolean
	 */
	protected function obtainNonCachedData()
	{
		$this->import->turnOffCache();

		$this->dbResult['LAYOUT'] = 		$this->import->getRemoteLayout();
		$this->resortLayoutBundleAlphabetically('');

		$this->dbResult['TYPE_LEVELS'] = 	$this->import->getTypeLevels();
		$this->dbResult['STATISTICS'] = 	$this->import->getStatisticsAll();

		return true;
	}

	/**
	 * Move data read from database to a specially formatted $arResult
	 * @return void
	 */
	protected function formatResult()
	{
		$this->arResult =& $this->dbResult;
		$this->arResult['ERRORS'] =& $this->errors;

		$this->arResult['URLS'] = array(
			'IMPORT' => 				$this->arParams['PATH_TO_IMPORT'],
			'IMPORT_AJAX' => 			$this->getPath().'/get.php',
			'TYPE_LIST' => 				TypeHelper::getListUrl(),
			'EXTERNAL_SERVICE_LIST' => 	ExternalServiceHelper::getListUrl()
		);

		unset($this->componentData);
	}

	/**
	 * Function implements all the life cycle of our component
	 * @return void
	 */
	public function executeComponent()
	{
		if($this->checkRequiredModules() && $this->checkPermissions() && $this->checkParameters())
		{
			$this->prepareInstances();
			$this->performAction();
			$this->obtainData();
		}

		$this->formatResult();

		$this->includeComponentTemplate();
	}

	/**
	 * Do smth when called over ajax
	 * @return mixed[]
	 */
	public static function doAjaxStuff($parameters = array())
	{
		$import = 	static::getImportInstance($parameters);
		$errors = 	array();
		$data = 	array();

		$request =	static::getRequest();

		// action: restore indexes
		if(isset($request['POST']['RESTORE_INDEXES']))
		{
			$import->restoreIndexes();
			$import->unLockProcess();
		}

		// action: process ajax
		if(isset($request['POST']['AJAX_CALL']))
		{
			$data = array();

			if($request['POST']['step'] == 0)
				$import->reset();

			try
			{
				@set_time_limit(0);

				$data['PERCENT'] = $import->performStage();
				$data['NEXT_STAGE'] = $import->getStageCode();
			}
			catch(Main\SystemException $e)
			{
				$errors[] = $e->getMessage();
			}

			if($data['PERCENT'] == 100)
			{
				$import->logFinalResult();
				$data['STAT'] = array_values($import->getStatisticsAll()); // to force to [] in json

				$GLOBALS['CACHE_MANAGER']->ClearByTag('sale-location-data');

				if($request['POST']['OPTIONS']['DROP_ALL'] == 1 || $request['POST']['ONLY_DELETE_ALL'] == 1)
					Main\Config\Option::set('sale', self::LOC2_IMPORT_PERFORMED_OPTION, 'Y');
			}
		}

		return array(
			'ERRORS' => $errors,
			'DATA' => $data
		);
	}

	protected function checkHasErrors($fatalOnly = false)
	{
		return count($this->errors['FATAL']) || (!$fatalOnly && count($this->errors['NONFATAL']));
	}

	/**
	 * Fetches all required data from database. Everyting that connected with data fetch lies here.
	 * @return void
	 */
	protected function obtainData()
	{
		$this->obtainNonCachedData();

		$this->dbResult['FIRST_IMPORT'] = Main\Config\Option::get('sale', self::LOC2_IMPORT_PERFORMED_OPTION, '') != 'Y';
	}

	protected static function getImportInstance($parameters)
	{
		// you must pass all parameters here, Import\ImportProcess should not know about $_REQUEST
		return new Import\ImportProcess(array(
			'INITIAL_TIME' => intval($parameters['INITIAL_TIME']),
			'ONLY_DELETE_ALL' => !!$parameters['ONLY_DELETE_ALL'],
			'USE_LOCK' => true
		));
	}

	protected static function getRequest()
	{
		$request = Main\Context::getCurrent()->getRequest();

		return array(
			'GET' => $request->getQueryList(),
			'POST' => $request->getPostList(),
		);
	}

	protected static function getRequestMethod()
	{
		return Main\Context::getCurrent()->getServer()->getRequestMethod();
	}

	// for building tree at import page
	public static function renderLayout($parameters)
	{
		$html = '';
		$alreadyPrinted = array();

		foreach($parameters['LAYOUT'][''] as $item)
		{
			$html .= self::renderLayoutNode($item['CODE'], $item['NAME'], $parameters, $alreadyPrinted);
		}

		return $html;
	}

	private function resortLayoutBundleAlphabetically($code)
	{
		if(!is_array($this->dbResult['LAYOUT'][$code]))
			return;

		$sortedChildren = array();
		foreach($this->dbResult['LAYOUT'][$code] as $item)
		{
			$name = isset($item['NAME'][ToUpper(LANGUAGE_ID)]['NAME']) ? $item['NAME'][ToUpper(LANGUAGE_ID)]['NAME'] : $item['NAME']['EN']['NAME'];
			$sortedChildren[$name] = $item;

			$this->resortLayoutBundleAlphabetically($item['CODE']);
		}

		ksort($sortedChildren, SORT_STRING);

		$this->dbResult['LAYOUT'][$code] = array_values($sortedChildren);
	}

	private static function renderLayoutNode($pCode, $pName, $parameters, &$alreadyPrinted)
	{
		// cycle prevention

		if(isset($alreadyPrinted[$pCode]))
			return '';

		$alreadyPrinted[$pCode] = true;

		$childrenHtml = '';
		$children = $parameters['LAYOUT'][$pCode];

		if(is_array($children) && !empty($children))
		{
			foreach($children as $code => $item)
				$childrenHtml .= self::renderLayoutNode($item['CODE'], $item['NAME'], $parameters, $alreadyPrinted);
		}

		return 	str_replace(array(
					'{{CODE}}', 
					'{{NAME}}', 
					'{{CHILDREN}}',
					'{{INPUT_NAME}}',
					'{{EXPANDER_CLASS}}'
				), array(
					$pCode == 'WORLD' ? '' : $pCode, // a little mixin with view, actually temporal
					isset($pName[ToUpper(LANGUAGE_ID)]['NAME']) ? $pName[ToUpper(LANGUAGE_ID)]['NAME'] : $pName['EN']['NAME'],
					$childrenHtml,
					$parameters['INPUT_NAME'], //!strlen($childrenHtml) ? $parameters['INPUT_NAME'] : '',
					strlen($childrenHtml) ? $parameters['EXPANDER_CLASS'] : ''
				), $parameters['TEMPLATE']);
	}

	/**
	 * Function reduces input value to integer type, and, if gets null, passes the default value
	 * @param mixed $fld Field value
	 * @param int $default Default value
	 * @param int $allowZero Allows zero-value of the parameter
	 * @return int Parsed value
	 */
	public static function tryParseInt(&$fld, $default = false, $allowZero = false)
	{
		$fld = intval($fld);
		if(!$allowZero && !$fld && $default !== false)
			$fld = $default;
			
		return $fld;
	}
}