<?php defined('SKYBLUE') or die('Bad file request');

/**
 * Show a View of Data item(s) in a page region indicated by:
 *
 * <!--#plugin:fragment(fragment_name, view_name, property_match=[vals], [page_ids])-->
 *
 * OR
 *
 * {plugin:fragment(fragment_name, view_name, property_match=[vals], [page_ids])}
 *
 * @param  array  An argument array
 * @return string The html output of the fragment
 */

function fragment($args) {
	global $Core;
	
	/*
	 * If no arguments are passed, return a null value.
	 */

	if (!count($args)) return null;
	
	$source = $args[0];
			
	$view = 'view';
	if (count($args) > 1) {
		$view = $args[1];
	}
	
	/*
	 * The prop_match argument is optional. If no prop_match 
	 * is supplied, all data objects will be loaded.
	 */

    /**
     * Added in r247
     */
    $params = array();
    /**
     * end
     */
	$vals = array();
	$prop_match = null;
	if (count($args) > 2) {
		$params = $args[2];
	}
	
	/*
	 * The pageIds argument is optional. If no pageIds 
	 * are supplied, the fragement will display on every page 
	 * thate uses this template.
	 */
	
	$pageIds = array();
	if (count($args) > 3) {
		$pageIds = $args[3];
	}
	
	/*
	 * Store the current page id in a variable.
	 */
	
	$thisPageId = $Core->GetVar($_GET, 'pid', DEFAULT_PAGE);
   
	/*
	 * The page id passed by the plugin call can be a single page id or 
	 * an array of page ids. If the page id is set, make sure it matches 
	 * the current page id.
	 */
	
	if (is_array($pageIds) && 
		count($pageIds) && 
		!in_array($thisPageId, $pageIds))
	{
		return null;
	}
	else if (!is_array($pageIds) && 
		!empty($pageIds) && $thisPageId !== $pageIds)
	{
		return null;
	}
	
	/*
	 * Load the data objects from storage
	 */
	
	/*
	 * Re-name 'menu' to 'page' so we get the right 
	 * data objects.
	 */
	
	$data_file = $source == 'menu' ? 'page' : $source;

	$objs = array();
	if (file_exists(SB_XML_DIR . "{$data_file}.xml")) {
		$objs = $Core->xmlHandler->parserMain(SB_XML_DIR . $data_file.'.xml');
	}
	else if (file_exists(SB_XML_DIR . "{$data_file}/{$data_file}.xml")) {
		$objs = $Core->xmlHandler->parserMain(SB_XML_DIR . "$data_file/$data_file.xml");
	}
	
	/*
	 * Output the data.
	 */
	
	return fragment_buffer(
		$source, 
		fragment_data($objs, $prop_match, $vals),
		$view, 
		$params
	);
}

/**
 * Added in r247
 * Parses a fragment argument to a params array
 * @param String $arg
 */
function arg_to_params($arg) {
    if (strpos($arg, '=') === false) return $arg;
    $tmp = array_map('trim', explode('=', $arg));
    $params = array();
    $value = str_to_array($tmp[1]);
    $params[$tmp[0]] = $value;
    return $params;
}

/**
 * Added in r247
 * Parses a string representation of an array to a PHP array
 *   Example:
 *   [bar,baz] (a string)
 *   
 *   Becomes:
 *
 *   array('bar','baz')
 */
function str_to_array($str) {
    if (substr($str,0,1) != '[' || $str{strlen($str)-1} != ']') {
        return $str;
    }
    $str = substr($str, 1, strlen($str)-1);
    return $str;
}

/**
 * Buffers the fragment output
 */
function fragment_buffer($name, $data, $view, $params=array()) {
	global $Core;

	$fragment = ACTIVE_SKIN_DIR . "fragments/$name/{$view}.php";
	$functions = ACTIVE_SKIN_DIR . "fragments/$name/functions.php";
	if (!file_exists($fragment)) return null;
	ob_start();
	if (file_exists($functions)) {
		require_once($functions);
	}
	require($fragment);
	$buffer = ob_get_contents();
	ob_end_clean();
	if (function_exists('plgBBCoder')) {
		$buffer = plgBBCoder($buffer);
	}
	return $buffer;
}

/**
 * Get the requested data objects
 */
function fragment_data($objs, $prop_match, $vals) {
	if (!count($vals) || empty($prop_match)) return $objs;
	$data = array();
	for ($i=0; $i<count($objs); $i++) {
		$obj =& $objs[$i];
		if (!empty($prop_match) && 
			isset($obj->$prop_match) && 
			in_array($obj->$prop_match, $vals))
		{
			array_push($data, $obj);   
		}
	}
	return $data;
}