<?php
namespace Meta_Tag_Manager;
/**
 * 
 * @author marcus
 *
 */
class Notices implements \Iterator, \JsonSerializable {
    /**
     * If object has been displayed, this gets set to true, can be checked to avoid duplicates.
     * @var boolean
     * @since 5.5.7
     */
    public $displayed = false;
    public $set_cookies = true;
	public $notices = array('errors'=>array(), 'infos'=>array(), 'alerts'=>array(), 'confirms'=>array());
    
    function __construct( $set_cookies = true ){
        //Grab from cookie, if it exists
        $this->set_cookies = $set_cookies == true;
        if( $this->set_cookies ){
            if( !empty($_COOKIE['mtm_notices']) ) {
                $notices = json_decode(base64_decode($_COOKIE['mtm_notices']), true);
                if( is_array($notices) ){
	                $this->notices = $notices;
	                setcookie('mtm_notices', '', time() - 3600, COOKIEPATH, COOKIE_DOMAIN, is_ssl(), true); //unset the cookie
                }
            }
        }
        add_filter('wp_redirect', array(&$this,'destruct'), 1,1);
    }
    
    function destruct($redirect = false){
        //Flush notices that weren't made to stay cross-requests, we can do this if initialized immediately.
        foreach($this->notices as $notice_type => $notices){
            foreach ($notices as $key => $notice){
                if( empty($notice['static']) ){
                    unset($this->notices[$notice_type][$key]);
                }else{
                    unset($this->notices[$notice_type][$key]['static']); //so it gets removed next request
                    $has_static = true;
                }
            }
        }
        if( $this->set_cookies ){
            if(count($this->notices['errors']) > 0 || count($this->notices['alerts']) > 0 || count($this->notices['infos']) > 0 || count($this->notices['confirms']) > 0){
                setcookie('mtm_notices', base64_encode(json_encode($this->notices)), time() + 30, COOKIEPATH, COOKIE_DOMAIN, is_ssl(), true); //sets cookie for 30 seconds, which may be too much
            }
        }
        return $redirect;
    }
    
    function __toString(){
        $string = false;
        if(count($this->notices['errors']) > 0){
            $string .= "<div class='mtm-warning mtm-warning-errors notice notice-error'>{$this->get_errors()}</div>";
        }
        if(count($this->notices['alerts']) > 0){
            $string .= "<div class='mtm-warning mtm-warning-alerts notice notice-warning'>{$this->get_alerts()}</div>";
        }
        if(count($this->notices['infos']) > 0){
            $string .= "<div class='mtm-warning mtm-warning-infos notice notice-info'>{$this->get_infos()}</div>";
        }
        if(count($this->notices['confirms']) > 0){
            $string .= "<div class='mtm-warning mtm-warning-confirms notice notice-success'>{$this->get_confirms()}</div>";
        }
        $this->displayed = true;
        return ($string !== false) ? "<div class='statusnotice'>".$string."</div>" : '';
    }
    
    /* General */
    function add($string, $type, $static = false){
        if( is_array($string) ){
            $result = true;
            foreach($string as $key => $string_item){
                if( !is_array($string_item) ){
                    if( $this->add($string_item, $type, $static) === false ){ $result = false; }
                }else{
                    if( $this->add_item($string_item, $type, $static) === false ){ $result = false; }
                }
            }
            return $result;
        }
        if($string != ''){
            return $this->add_item($string, $type, $static);
        }else{
            return false;
        }
    }

    function add_item($string, $type, $static = false){
        if( isset($this->notices[$type]) ){
            $notice_key = 0;
            foreach( $this->notices[$type] as $notice_key => $notice ){
                if($string == $notice['string']){
                    return $notice_key;
                }elseif( is_array($string) && !empty($notice['title']) && $this->get_array_title($string) == $notice['title'] ){
                    return $notice_key;
                }
            }
            $i = $notice_key+1;
            if( is_array($string) ){
                $this->notices[$type][$i]['title'] = $this->get_array_title($string);
				$this->notices[$type][$i]['string'] = array_shift($string);
            }else{
	            $this->notices[$type][$i]['string'] = $string;
            }
            if( $static ){
                $this->notices[$type][$i]['static'] = true;
            }
            return $i;
        }else{
            return false;
        }
    }
    
    /**
     * Returns title of an array, assumes a assoc array with one item containing title => messages
     * @param unknown_type $array
     * @return unknown
     */
    function get_array_title($array){
        foreach($array as $title => $msgs)
        return $title;
    }
    
    function remove($key, $type){
        if( isset($this->notices[$type]) ){
            unset($this->notices[$type][$key]);
            return true;
        }else{
            return false;
        }
    }
    
    function remove_all(){
        $this->notices = array('errors'=>array(), 'infos'=>array(), 'alerts'=>array(), 'confirms'=>array());
    }
    
    function get($type){
        if( isset($this->notices[$type]) ){
            $string = '';
            foreach ($this->notices[$type] as $message){
                if( !is_array($message['string']) ){
                    if( preg_match('/<p>/', $message['string']) ){
                        $string .= $message['string'];
                    }else{
                        $string .= "<p>{$message['string']}</p>";
                    }
                }else{
                    $string .= "<p><strong>".$message['title']."</strong><ul>";
                    foreach($message['string'] as $msg){
                        if( trim($msg) != '' ){
                            $string .= "<li>$msg</li>";
                        }
                    } 
                    $string .= "</ul></p>";
                }
            }
            return $string;
        }
        return false;
    }
    
    function count($type){
        if( isset($this->notices[$type]) ){
            return count($this->notices[$type]);
        }
        return 0;
    }
    
    /* Errors */
    function add_error($string, $static=false){
        return $this->add($string, 'errors', $static);
    }
    function remove_error($key){
        return $this->remove($key, 'errors');
    }
    function get_errors(){
        return $this->get('errors');
    }
    function count_errors(){
        return $this->count('errors');
    }

    /* Alerts */
    function add_alert($string, $static=false){
        return $this->add($string, 'alerts', $static);
    }
    function remove_alert($key){
        return $this->remove($key, 'alerts');
    }
    function get_alerts(){
        return $this->get('alerts');
    }
    function count_alerts(){
        return $this->count('alerts');
    }
    
    /* Info */
    function add_info($string, $static=false){
        return $this->add($string, 'infos', $static);
    }
    function remove_info($key){
        return $this->remove($key, 'infos');
    }
    function get_infos(){
        return $this->get('infos');
    }
    function count_infos(){
        return $this->count('infos');
    }
    
    /* Confirms */
    function add_confirm($string, $static=false){
        return $this->add($string, 'confirms', $static);
    }
    function remove_confirm($key){
        return $this->remove($key, 'confirms');
    }
    function get_confirms(){
        return $this->get('confirms');
    }  
    function count_confirms(){
        return $this->count('confirms');
    }
    
    // Encoiding in JsonSerializable
    function jsonSerialize(){
        $notices = array();
        foreach( $notices as $k => $v ){
            if( !empty($v) ){
                $notices[$k] = $v;
	        }
        }
        return $notices;
    }

	//Iterator Implementation
    function rewind(){
        reset($this->bookings);
    }  
    function current(){
        $var = current($this->bookings);
        return $var;
    }  
    function key(){
        $var = key($this->bookings);
        return $var;
    }  
    function next(){
        $var = next($this->bookings);
        return $var;
    }  
    function valid(){
        $key = key($this->bookings);
        $var = ($key !== NULL && $key !== FALSE);
        return $var;
    }
 
}
function mtm_notices_init(){
    global $MTM_Notices;
    $MTM_Notices = new MTM_Notices();
}
add_action('plugins_loaded', 'mtm_notices_init');
?>