<?php

	class kModRewriteHelper extends kHelper {

		function kModRewriteHelper()
		{
			parent::kHelper();
			$this->HTTPQuery =& $this->Application->recallObject('HTTPQuery');
		}

		function SetDefaultValues()
		{
			$defaults = Array('m_cat_id' => 0, 'm_cat_page' => 1, 'm_opener' => 's');
			foreach ($defaults as $default_key => $default_value)
			{
				if ($this->HTTPQuery->Get($default_key) == null) {
					$this->HTTPQuery->Set($default_key, $default_value);
				}
			}
		}

		function ProcessLanguage(&$url_parts)
		{
			if (!isset($url_parts[0])) return false;
			$res = false;
			$url_part = array_shift($url_parts);

			$sql = 'SELECT LanguageId FROM '.TABLE_PREFIX.'Language WHERE LOWER(PackName) = '.$this->Conn->qstr($url_part).' AND Enabled = 1';
			$language_id = $this->Conn->GetOne($sql);
			$this->Application->Phrases = new PhrasesCache();
			if($language_id)
			{
				$this->HTTPQuery->Set('m_lang', $language_id);
				$res = true;
			}

			$this->Application->VerifyLanguageId();
			if (!$res) {
				array_unshift($url_parts, $url_part);
			}
			return $res;
		}

		function ProcessTheme(&$url_parts)
		{
			if (!isset($url_parts[0])) return false;
			$res = false;
			$url_part = array_shift($url_parts);

			$sql = 'SELECT ThemeId FROM '.TABLE_PREFIX.'Theme WHERE LOWER(Name) = '.$this->Conn->qstr($url_part).' AND Enabled = 1';
			$theme_id = $this->Conn->GetOne($sql);
			if($theme_id)
			{
				$this->HTTPQuery->Set('m_theme', $theme_id);
				$res = true;
			}
			$this->Application->VerifyThemeId(); // verify anyway - will set default if not found!!!
			if (!$res) {
				array_unshift($url_parts, $url_part);
			}
			return $res;
		}

		function ProcessCategory(&$url_parts)
		{
			if (!isset($url_parts[0])) return false;
			$res = false;
			$url_part = array_shift($url_parts);

			$category_id = 0;
			$last_category_id = 0;
			$category_path = '';
			do
			{
				$category_path = trim($category_path.'/'.$url_part, '/');

				if( preg_match('/(.*)_([\d]+)$/', $category_path, $rets) )
				{
					$category_path = $rets[1];
					$this->HTTPQuery->Set('m_cat_page', $rets[2]);
				}

				$category_id = $this->Conn->GetOne(
						'SELECT CategoryId
						FROM '.TABLE_PREFIX.'Category
						WHERE NamedParentPath = '.$this->Conn->qstr($category_path));
				if ($category_id !== false) {
					$last_category_id = $category_id;
					$url_part = array_shift($url_parts);
					$res = true;
				}
			} while ($category_id !== false && $url_part);
			$this->HTTPQuery->Set('m_cat_id', $last_category_id);

			if ($url_part) {
				array_unshift($url_parts, $url_part);
			}
			return $res;
		}

		function ProcessModuleIndex(&$url_parts)
		{
			if ( count($url_parts) > 1) return false; // if no more parts or only 1 part left
			if ( $url_parts && $url_parts[0] == 'index') { // treat index same as no parts
				array_shift($url_parts);
			}

			if( $url_parts ) { // if parts are left, it can only be module page
				if (!is_numeric($url_parts[0])) return false;

				// set module pages for all modules, since we don't know which module will need it
				foreach ($this->Application->ModuleInfo as $module_name => $module_data)
				{
					$this->Application->SetVar( $module_data['Var'].'_id', 0);
					$this->Application->SetVar( $module_data['Var'].'_Page', $url_parts[0]);
					$this->Application->SetVar( $module_data['Var'].'_Reviews_Page', 0);
				}
			}

			// try to find CMS index page of the category
			if ($this->Application->isModuleEnabled('In-CMS')) {
				$sql = 'SELECT p.Path, ci.CategoryId FROM '.TABLE_PREFIX.'Pages AS p
							LEFT JOIN '.TABLE_PREFIX.'CategoryItems AS ci
							ON ci.ItemResourceId = p.ResourceId
							WHERE
								p.IsIndex = 1
								AND
								CategoryId = '.$this->Application->GetVar('m_cat_id').'
								AND
								ci.PrimaryCat = 1';
				$template_found = $this->Conn->GetRow($sql);
				if ($template_found !== false) {
					$this->HTTPQuery->Set('t', $template_found['Path']);
					return true;
				}
			}

			$sql = 'SELECT CachedCategoryTemplate
					FROM '.TABLE_PREFIX.'Category
					WHERE CategoryId = '.$this->Application->GetVar('m_cat_id');
			$this->HTTPQuery->Set('t', $this->HTTPQuery->getDefaultTemplate( $this->Conn->GetOne($sql) ) );
			return true;
		}

		function ProcessModuleItem(&$url_parts, $set_t=true)
		{
			if (!isset($url_parts[0])) return false;
			if ( count($url_parts) != 1 ) return false;
			$url_part = array_shift($url_parts);

			// match module reviews page
			$page = 1;
			if( preg_match('/(.*)_([\d]+)$/', $url_part, $rets) )
			{
				$url_part = $rets[1];
				$page = $rets[2];
			}

			// locating the item in CategoryItems by filename to detect its ItemPrefix and its category ParentPath
			$cat_item = $this->Conn->GetRow('
					SELECT ci.ItemResourceId, ci.ItemPrefix, c.ParentPath, ci.CategoryId FROM '.TABLE_PREFIX.'CategoryItems AS ci
					LEFT JOIN '.TABLE_PREFIX.'Category AS c
					ON c.CategoryId = ci.CategoryId
					WHERE
						ci.CategoryId = '.$this->Application->GetVar('m_cat_id').'
						AND
						ci.Filename = '.$this->Conn->qstr($url_part));

			if ($cat_item !== false) { // item found
				$module_prefix = $cat_item['ItemPrefix'];
				$parent_path = implode(',',explode('|', substr($cat_item['ParentPath'], 1, -1)));

				// item template is stored in module' system custom field - need to get that field Id
				$item_template_field_id = $this->Conn->GetOne(
					'SELECT CustomFieldId
					 FROM '.TABLE_PREFIX.'CustomField
					 WHERE FieldName = '.$this->Conn->qstr($module_prefix.'_ItemTemplate'));

				// looking for item template through cats hierarchy sorted by parent path
				$query = 'SELECT ccd.l1_cust_'.$item_template_field_id.',
										FIND_IN_SET(c.CategoryId, '.$this->Conn->qstr($parent_path).') AS Ord1,
										c.CategoryId, c.Name, ccd.l1_cust_15
									FROM inp_Category AS c
									LEFT JOIN inp_CategoryCustomData AS ccd
									ON ccd.ResourceId = c.ResourceId
									WHERE c.CategoryId IN ('.$parent_path.') AND ccd.l1_cust_'.$item_template_field_id.' != \'\'
									ORDER BY FIND_IN_SET(c.CategoryId, '.$this->Conn->qstr($parent_path).') DESC';
				$item_template = $this->Conn->GetOne($query);

				// converting ResourceId to correpsonding Item id
				$module_config = $this->Application->getUnitOptions($module_prefix);
				$item_id = $this->Conn->GetOne(
					'SELECT '.$module_config['IDField'].' FROM '.$module_config['TableName'].'
					 WHERE ResourceId = '.$cat_item['ItemResourceId']
				);

				if ($item_template && $item_id) {
					if ($set_t) {
						$this->HTTPQuery->Set('t', $item_template);
					}
					$this->Application->SetVar($module_prefix.'_id', $item_id);
					$this->Application->SetVar($module_prefix.'_Reviews_Page', $page);
					return $module_prefix;
				}
			}
			array_unshift($url_parts, $url_part);
			return false;
		}

		function ProcessPhisycalTemplate(&$url_parts)
		{
			if (!isset($url_parts[0])) return false;

			$remaining = array();
			do
			{
				$template_path = implode('/', $url_parts);

				$t_parts['path'] = dirname($template_path) == '.' ? '' : '/'.dirname($template_path);
				$t_parts['file'] = basename($template_path);

				$sql = 'SELECT FileId
						FROM '.TABLE_PREFIX.'ThemeFiles
						WHERE (FilePath = '.$this->Conn->qstr($t_parts['path']).') AND (FileName = '.$this->Conn->qstr($t_parts['file'].'.tpl').')';

//				$sql = 'SELECT FileId FROM '.TABLE_PREFIX.'ThemeFiles WHERE CONCAT(FilePath, "/", FileName) = '.$this->Conn->qstr('/'.$template_path.'.tpl');
				$template_found = $this->Conn->GetOne($sql);
				if(!$template_found)
				{
					array_unshift($remaining, array_pop($url_parts));
				}
			} while (!$template_found && $url_parts);

			$url_parts = $remaining;

			if ($template_found) {
				$this->HTTPQuery->Set('t', $template_path );
				return true;
			}
			return false;
		}

		/**
		 * Checks if whole url_parts matches a whole In-CMS page
		 *
		 * @param array $url_parts
		 * @return boolean
		 */
		function ProcessVirtualTemplate(&$url_parts)
		{
			if (!isset($url_parts[0]) || !$this->Application->isModuleEnabled('In-CMS')) return false;

			$template_path = implode('/', $url_parts);
			$sql = 'SELECT p.PageId, ci.CategoryId FROM '.TABLE_PREFIX.'Pages AS p
							LEFT JOIN '.TABLE_PREFIX.'CategoryItems AS ci
							ON ci.ItemResourceId = p.ResourceId
							WHERE
								Path = '.$this->Conn->qstr($template_path).'
								AND
								ci.PrimaryCat = 1';
			$template_found = $this->Conn->GetRow($sql);

			if ($template_found) {
				$this->Application->SetVar('m_cat_id', $template_found['CategoryId']);
				$this->HTTPQuery->Set('t', $template_path );
				return true;
			}

			return false;
		}

		function processRewriteURL()
		{
			$url = $this->HTTPQuery->Get('_mod_rw_url_');
			if( substr($url, -5) == '.html' ) $url = substr($url, 0, strlen($url) - 5 );
			$url_parts = $url ? explode('/', $url) : Array();

			$process_module = true;
			if($this->HTTPQuery->Get('rewrite') == 'on' || !$url_parts)
			{
				$this->SetDefaultValues();
			}

			if(!$url_parts)
			{
				$this->Application->Phrases = new PhrasesCache();
				$this->Application->VerifyLanguageId();
				$this->Application->Phrases->Init('phrases');
				$this->Application->VerifyThemeId();

				$this->HTTPQuery->Set('t', $this->HTTPQuery->getDefaultTemplate('') );
				$this->HTTPQuery->finalizeParsing(Array('m'));
				return false;
			}
			else
			{
				$this->HTTPQuery->Set('t', '');
			}

			$passed = Array('m');
			$this->ProcessLanguage($url_parts);
			$this->ProcessTheme($url_parts);

			if ( $this->ProcessVirtualTemplate($url_parts) ) {
				$this->HTTPQuery->finalizeParsing($passed, $module_params);
				return true;
			}

			$this->ProcessCategory($url_parts);
			if ( $this->ProcessModuleIndex($url_parts) ) {
				foreach ($this->Application->ModuleInfo as $module_name => $info) {
					$passed[] = $info['Var'];
				}
				$this->HTTPQuery->finalizeParsing($passed, $module_params);
				return ;
			}
			if ( $module_prefix = $this->ProcessModuleItem($url_parts) ) {
				$passed[] = $module_prefix;
				$this->HTTPQuery->finalizeParsing($passed, $module_params);
				return ;
			}

			/*// match module
			$next_template = $this->HTTPQuery->Get('next_template');
			if($url_part || $next_template)
			{
				if($next_template)
				{
					$next_template_parts = explode('/', $next_template);
					$module_folder = array_shift($next_template_parts);
				}
				else
				{
					$module_folder = $url_part;
				}

				foreach ($this->Application->ModuleInfo as $module_name => $module_data)
				{
					if( trim($module_data['TemplatePath'], '/') == $module_folder )
					{
						$module_prefix = $module_data['Var'];
						break;
					}
				}
			}*/

			if ( $this->ProcessPhisycalTemplate($url_parts) ) {
				if (!$url_parts) {
					$this->HTTPQuery->finalizeParsing($passed, $module_params);
					return true;
				}
			}

			if ( $module_prefix = $this->ProcessModuleItem($url_parts, false) ) {
				$passed[] = $module_prefix;
				$this->HTTPQuery->finalizeParsing($passed, $module_params);
				return ;
			}

			$this->HTTPQuery->finalizeParsing($passed, $module_params);

			// pass params left to module

			/*$this->Application->Phrases->Init('phrases');
			$passed = Array('m');
			$module_params = Array();
			if ( isset($module_prefix) ) {
				$passed[] = $module_prefix;
				$module_event = new kEvent($module_prefix.':ParseEnv', Array('url_parts' => $url_parts) );
				if ($process_module) {
					$this->Application->HandleEvent($module_event);
				}
				$item_id = $this->HTTPQuery->Get($module_prefix.'_id');
				$module_params = Array($module_prefix.'_id' => $item_id ? $item_id : '0' );

				if ($module_event->status == erFAIL) {
					$not_found = $this->Application->ConfigValue('ErrorTemplate');
					$this->HTTPQuery->Set('t', $not_found ? $not_found : 'error_notfound' );
				}
			}

			$this->HTTPQuery->finalizeParsing($passed, $module_params);*/
		}


	}

?>