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<?php // -*- mode:php; tab-width:4; indent-tabs-mode:t; c-basic-offset:4; -*-
#CMS - CMS Made Simple
#(c)2004-2010 by Ted Kulp (ted@cmsmadesimple.org)
#This project's homepage is: http://cmsmadesimple.org
#
#This program is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 2 of the License, or
#(at your option) any later version.
#
#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.
#You should have received a copy of the GNU General Public License
#along with this program; if not, write to the Free Software
#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
#
#$Id$

/**
 * Template related functions.
 *
 * @package CMS
 * @license GPL
 */

/**
 * Include template class definition
 */
include_once(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'class.template.inc.php');

/**
 * Class for doing template related functions.  Many of the Template object functions are just wrappers around these.
 *
 * @since		0.6
 * @package		CMS
 * @license GPL
 */
class TemplateOperations
{
	private static $_instance;
	private $_templateCache = array();
	protected function __construct() {}

	public static function &get_instance()
	{
		if( !is_object(self::$_instance) )
		{
			self::$_instance = new TemplateOperations();
		}
		return self::$_instance;
	}


	function LoadTemplates()
	{
		$gCms = cmsms();
		$db = $gCms->GetDb();

		$result = array();

		$query = "SELECT template_id, template_name, template_content, stylesheet, encoding, active, default_template, modified_date FROM ".cms_db_prefix()."templates ORDER BY template_name";
		$dbresult = $db->Execute($query);

		while ($dbresult && !$dbresult->EOF)
		{
			$onetemplate = new Template();
			$onetemplate->id = $dbresult->fields['template_id'];
			$onetemplate->name = $dbresult->fields['template_name'];
			$onetemplate->active = $dbresult->fields['active'];
			$onetemplate->default = $dbresult->fields['default_template'];
			$onetemplate->content = $dbresult->fields['template_content'];
			$onetemplate->encoding = $dbresult->fields['encoding'];
			$onetemplate->stylesheet = $dbresult->fields['stylesheet'];
			$onetemplate->modified_date = $db->UnixTimeStamp($dbresult->fields['modified_date']);
			$result[] = $onetemplate;
			$this->_toCache($onetemplate);
			$dbresult->MoveNext();
		}
		
		if ($dbresult) $dbresult->Close();

		return $result;
	}


	protected function &_findCachedDefault()
	{
		foreach( $this->_templateCache as $key => &$object )
		{
			if( $object->default ) return $object;
		}
		$res = null;
		return $res;
	}


	protected function &_fromCache($id)
	{
		
		if( is_numeric($id) )
		{
			if( isset($this->_templateCache[$id]) )
				return $this->_templateCache[$id];
		}
		else if( is_string($id) )
		{
			foreach( $this->_templateCache as $key => &$object )
			{
				if( $object->name == $id ) return $this->_templateCache[$key];
			}
		}

		$res = null;
		return $res;
	}


	protected function _toCache(Template& $template)
	{
		$this->_templateCache[$template->id] = $template;
	}


	public function & LoadTemplateByID($id,$sparse = FALSE)
	{
		$onetemplate = null;
		if( ($onetemplate = $this->_fromCache($id)) )
		{
			return $onetemplate;
		}

		$db = cmsms()->GetDb();
		$query = '';
		$where = ' WHERE template_id = ?';
		if( !is_numeric($id) )
		{
			$where = ' WHERE template_name = ?';
		}

		if( $sparse )
		{
			$query = "SELECT template_id, template_name, stylesheet, active, default_template, modified_date FROM ".cms_db_prefix().'templates';
		}
		else
		{
			$query = "SELECT template_id, template_name, template_content, stylesheet, encoding, active, default_template, modified_date 
                      FROM ".cms_db_prefix()."templates";
		}
		$row = $db->GetRow($query.$where, array($id));

		if($row)
		{
			$onetemplate = new Template();
			$onetemplate->id = $row['template_id'];
			$onetemplate->name = $row['template_name'];
			if( isset($row['template_content']) ) $onetemplate->content = $row['template_content'];
			$onetemplate->stylesheet = $row['stylesheet'];
			if( isset($row['encoding']) ) $onetemplate->encoding = $row['encoding'];
			$onetemplate->default = $row['default_template'];
			$onetemplate->active = $row['active'];
			$onetemplate->modified_date = $db->UnixTimeStamp($row['modified_date']);

			$this->_toCache($onetemplate);
		}

		return $onetemplate;
	}


	function LoadTemplateByContentAlias($alias)
	{
		$result = null;
		if( ($result = $this->_fromCache($alias)) )
		{
			return $result;
		}

		$gCms = cmsms();
		$db = $gCms->GetDb();

		$query = "SELECT t.template_id, t.template_name, t.template_content, t.stylesheet, t.encoding, t.active, t.default_template, t.modified_date FROM ".cms_db_prefix()."templates t INNER JOIN ".cms_db_prefix()."content c ON c.template_id = t.template_id WHERE (c.content_alias = ? OR c.content_id = ?) AND c.active = 1";
		$row = &$db->GetRow($query, array($alias, $alias));

		if ($row)
		{
			$result = new Template();
			$result->id = $row['template_id'];
			$result->name = $row['template_name'];
			$result->content = $row['template_content'];
			$result->stylesheet = $row['stylesheet'];
			$result->encoding = $row['encoding'];
			$result->default = $row['default_template'];
			$result->active = $row['active'];
			$result->modified_date = $db->UnixTimeStamp($row['modified_date']);
			$this->_toCache($result);
		}

		return $result;
	}


	function LoadTemplateAndContentDates($alias)
	{
		$result = array();

		$gCms = cmsms();
		$db = $gCms->GetDb();

		$query = "SELECT c.modified_date AS c_date, t.modified_date AS t_date FROM ".cms_db_prefix()."templates t INNER JOIN ".cms_db_prefix()."content c ON c.template_id = t.template_id WHERE (c.content_alias = ? OR c.content_id = ?) AND c.active = 1";
		$dbresult = &$db->Execute($query, array($alias, $alias));

		while ($dbresult && !$dbresult->EOF)
		{
			$result[] = $dbresult->fields['c_date'];
			$result[] = $dbresult->fields['t_date'];
			$dbresult->MoveNext();
		}
		
		if ($dbresult) $dbresult->Close();

		return $result;
	}


	function LoadDefaultTemplate()
	{
		$result = null;
		if( ($result = $this->_findCachedDefault()) )
		{
			return $result;
		}

		$db = cmsms()->GetDb();
		$query = "SELECT template_id, template_name, template_content, stylesheet, encoding, active, default_template, create_date, modified_date FROM ".cms_db_prefix()."templates WHERE default_template = 1";
		$row = &$db->GetRow($query);

		if($row)
		{
			$result = new Template();
			$result->id = $row['template_id'];
			$result->name = $row['template_name'];
			$result->content = $row['template_content'];
			$result->stylesheet = $row['stylesheet'];
			$result->encoding = $row['encoding'];
			$result->default = $row['default_template'];
			$result->active = $row['active'];
			$result->modified_date = $db->UnixTimeStamp($row['modified_date']);

			$this->_toCache($result);
		}

		return $result;
	}

	function UsageCount($id)
	{
		$result = 0;

		$gCms = cmsms();
		$db = $gCms->GetDb();

		$query = "SELECT count(*) as the_count FROM ".cms_db_prefix()."content WHERE template_id = ?";
		$row = &$db->GetRow($query, array($id));

		if($row)
		{
			$result = $row['the_count'];
		}
	
		return $result;
	}

	function InsertTemplate($template)
	{
		$result = -1; 

		$gCms = cmsms();
		$db = $gCms->GetDb();

		$time = $db->DBTimeStamp(time());
		$new_template_id = $db->GenID(cms_db_prefix()."templates_seq");
		$query = "INSERT INTO ".cms_db_prefix()."templates (template_id, template_name, template_content, stylesheet, encoding, active, default_template, create_date, modified_date) VALUES (?,?,?,?,?,?,?,".$time.",".$time.")";
		$dbresult = $db->Execute($query, array($new_template_id, $template->name, $template->content, $template->stylesheet, $template->encoding, $template->active, $template->default));
		if ($dbresult !== false)
		{
			$result = $new_template_id;
		}

		return $result;
	}

	function UpdateTemplate($template)
	{
		$result = false; 

		$gCms = cmsms();
		$db = $gCms->GetDb();

		$time = $db->DBTimeStamp(time());
		$query = "UPDATE ".cms_db_prefix()."templates SET template_name = ?, template_content = ?, stylesheet = ?, encoding = ?, active = ?, default_template = ?, modified_date = ".$time." WHERE template_id = ?";
		$dbresult = $db->Execute($query,array($template->name,$template->content,$template->stylesheet,$template->encoding,$template->active,$template->default,$template->id));
		if ($dbresult !== false)
		{
			$result = true;
		}

		return $result;
	}

	function DeleteTemplateByID($id)
	{
		$result = false;

		$gCms = cmsms();
		$db = $gCms->GetDb();

		$query = "DELETE FROM ".cms_db_prefix()."css_assoc WHERE assoc_type = 'template' AND assoc_to_id = ?";
		$dbresult = $db->Execute($query,array($id));

		$query = "DELETE FROM ".cms_db_prefix()."templates where template_id = ?";
		$dbresult = $db->Execute($query,array($id));

		if ($dbresult !== false)
		{
			$result = true;
		}

		return $result;
	}

	function CountPagesUsingTemplateByID($id)
	{
		$result = 0;

		$gCms = cmsms();
		$db = $gCms->GetDb();

        $query = "SELECT count(*) AS count FROM ".cms_db_prefix()."content WHERE template_id = ?";
        $row = &$db->GetRow($query,array($id));

		if ($row)
		{
			if (isset($row["count"]))
			{
				$result = $row["count"];
			}
		}

		return $result;
	}

	function StylesheetsUsed()
	{
		$result = 0;

		$gCms = cmsms();
		$db = $gCms->GetDb();

        $query = "SELECT count(*) AS count FROM ".cms_db_prefix()."templates WHERE stylesheet is not null and stylesheet != ''";
        $row = &$db->GetRow($query);

		if ($row)
		{
			if (isset($row["count"]))
			{
				$result = $row["count"];
			}
		}

		return $result;
	}

	function TouchAllTemplates($blob_name='')
	{
		$result = false;

		$gCms = cmsms();
		$db = $gCms->GetDb();

		$dbresult = false;

		$time = $db->DBTimeStamp(time());
		if ($blob_name != '')
		{
			$query = "UPDATE ".cms_db_prefix()."templates SET modified_date = ".$time." WHERE template_content like ?";
			$dbresult = $db->Execute($query,array('%{html_blob name="'.$blob_name.'"}%'));
		}
		else
		{
			$query = "UPDATE ".cms_db_prefix()."templates SET modified_date = ".$time;
			$dbresult = $db->Execute($query);
		}

		if ($dbresult !== false)
		{
			$result = true;
		}

		return $result;
	}

	function CheckExistingTemplateName($name, $id = -1)
	{
		$result = false;

		$gCms = cmsms();
		$db = $gCms->GetDb();

		$query = "SELECT template_id from ".cms_db_prefix()."templates WHERE template_name = ?";
		$attrs = array($name);
		if ($id > -1)
		{
			$query .= ' AND template_id != ?';
			$attrs[] = $id;
		}
		$row = &$db->GetRow($query,$attrs);

		if ($row)
		{
			$result = true; 
		}

		return $result;
	}
	
	function TemplateDropdown($id = 'template_id', $selected_id = -1, $othertext = '', $show_hidden = false)
	{
		$result = "";
		
		$gCms = cmsms();
		$templateops = $gCms->GetTemplateOperations();

		$alltemplates = $templateops->LoadTemplates();
		
		if (count($alltemplates) > 0)
		{
			$result .= '<select name="'.$id.'"';
			if ($othertext != '')
			{
				$result .= ' ' . $othertext;
			}
			$result .= '>';
			#$result .= '<option value="">Select Template</option>';
			foreach ($alltemplates as $onetemplate)
			{
				if ($onetemplate->active == true || $show_hidden == true)
				{
					$result .= '<option value="'.$onetemplate->id.'"';
					if ($onetemplate->id == $selected_id || ($selected_id == -1 && $onetemplate->default == true))
					{
						$result .= ' selected="selected"';
					}
					$result .= '>'.$onetemplate->name.'</option>';
				}
			}
			$result .= '</select>';
		}
		
		return $result;
	}
}


?>