<?php
namespace Tz\WordPress\Tools\Notifications;

use Tz\Common;
use Tz\WordPress\Tools;
use Tz\WordPress\Tools\Sequencer;
use Tz\WordPress\CBV;
use WP_User;
use Exception, StdClass;


const OPTION_NAME = "notif_options";

    call_user_func(function() {
        Tools\add_actions(__NAMESPACE__ . '\Actions');
        Vars::$options = new Tools\WP_Option(OPTION_NAME);
        Vars::$notices  = Array();
        if (is_admin()) {
            require_once(__DIR__ . DIRECTORY_SEPARATOR . 'Validation.php');
            require_once(__DIR__ . DIRECTORY_SEPARATOR . 'Admin.php');
        }
    });


function subval_sort($a,$subkey,$sort) {
	foreach($a as $k=>$v) {
		$b[$k] = strtolower($v[$subkey]);
	}
	$sort($b);
	foreach($b as $key=>$val) {
		$c[] = $a[$key];
	}
	return $c;
}

function get_user_notices($uid) {
    $notices = get_user_meta($uid,'notices',true);    
    if(!empty($notices)) {
    
        $notices = subval_sort($notices,'sent_date','arsort');
    
        Vars::$notices = $notices;
    }
}

function print_user_notices($show_more = true) {
    
    get_user_notices(Tools\getCurrentUser()->ID);
    
    
    if (CBV\on_page('/dashboard')) {
        $limit          = 5;
    } else {
        $limit          = 10;
    }
    
    $notices        = Vars::$notices;
    $total_rows     = count($notices);
    $next_id        = isset($_POST['last_id']) ? ($_POST['last_id']+1) : 0;
    $end            = (($next_id + $limit) < $total_rows) ? ($next_id + $limit) : $total_rows;
    
    
    if (count($notices) < 1) {
        print '<tr><td colspan="3">You have no new notices.</td></tr>';
    }
    
    $rows           = "";
    
    $last_id        = 0;
    for($i = $next_id; $i < $end; $i++) {
            
        $the_notice = get_post($notices[$i]['notification_id']);
        $system     = get_post_meta($notices[$i]['notification_id'],'system',true);
        $content    = $system['message'];
        $id = $the_notice->ID;
        
        if (isset($notices[$i]['args']) && count($notices[$i]['args']) > 0):
        foreach($notices[$i]['args'] as $key => $val) {
            if (filter_var($val, FILTER_VALIDATE_URL) !== false) {
                $content = str_replace("{".$key."}","<a href='".$val."'>Click here</a>",$content);
            } else {
                $content = str_replace("{".$key."}",$val,$content);
            }
        }
        endif; 
        
        $rows   .= '<tr class="notice-row" id="'.$i.'">';
            if ($notices[$i]['status']=="unread") {
            $rows   .= '<td width="12" style="padding:0;padding-left:10px;vertical-align:middle;"><a href="#" class="notice '.(($notices[$i]['status']=="read") ? 'read' : 'unread').'"><img src="assets/images/blank.gif" width="12" height="12" /></a></td>';
            } else {
                $rows .= '<td width="12" style="padding:0;padding-left:10px;vertical-align:middle;"><img src="assets/images/blank.gif" width="12" height="12" /></td>';
            }
            if($system['system_message_type']=="none"):
            $rows   .= '<td colspan="2" style="vertical-align:middle;">'.nl2br($content).'<br /><span class="legal">Sent: '.date("M j, Y @ h:ia",$notices[$i]['sent_date']).'</span></td>';
            else:
            $rows   .= '<td width="80" style="vertical-align:middle;"><span>'.ucfirst(str_replace("_","&nbsp;",$system['system_message_type'])).'</span></td>';
            $rows   .= '<td style="vertical-align:middle;">'.nl2br($content).'<br /><span class="legal">Sent: '.date("M j, Y @ h:ia",$notices[$i]['sent_date']).'</span></td>';
            endif;
        $rows   .= '</tr>';
        $last_id = $i;
                        
    }
    
    if ($end < $total_rows && CBV\on_page('/notices')) {
        $rows .= '<tr id="TzMoreRows"><td colspan="4"><a onclick="return false;" class="load_more_notices" id="'.$last_id.'" href="#">Show more...</a></td></tr>';
    }
    
    if(isset($_POST['ajax'])) {
        die($rows);
    } else {
        print $rows;
    }                

    
}


function get_notification_by_trigger($trigger) {
    $args = array(
        'post_type'     => 'notifications'
      , 'numberposts'   => -1
      , 'orderby'       => 'modified'
      , 'order'         => 'desc'
    );
    
    $my_notif = false;
    
    foreach(get_posts($args) as $entry) {
        $details = get_post_meta($entry->ID,'details',true);
        if ($details['type']=="triggered" && $details['trigger'] == $trigger) {
            $my_notif = $entry;
            break;
        }
    }
    
    return $my_notif;

}

/**
 * GET NUMBER OF NEW NOTICES
 @returns (Int)
*/
function get_num_notices() {
    // get number of notices for this user that are new...
    get_user_notices(Tools\getCurrentUser()->ID);
    $notices = Vars::$notices;
    $notifications = array();
    // return $num;
    if(empty($notices)) { 
        return 0; 
    } else {
        foreach($notices as $notice) {
            if ($notice['status']=="unread") {
                $notifications[] = $notice;
            }
        }
    }
    return count($notifications);
}

function remove_notice($notification_id = -1) {
    get_user_notices(Tools\getCurrentUser()->ID);
    $notices = Vars::$notices;
    if (!empty($notices)) {
        foreach($notices as $id => $notice) {
            if ($id==$notification_id) {
                $notices[$id]['status']="read";
                break;
            }
        }
    }
    update_user_meta(Tools\getCurrentUser()->ID,'notices',$notices);
}

/**
 Send Notifications
 @trigger   = notification unique slug name
*/
function send_triggered_notification($uid,$trigger="NO_TRIGGER",$args = array(),$send_override = false) {
    
    
    $notification = get_notification_by_trigger($trigger);
    
    
    if($notification) {
        
        
        // get the notification and notificatio details....
        $nid                    = $notification->ID;
        $details                = get_post_meta($nid,'details',true);
        $email                  = get_post_meta($nid,'email',true);
        $system                 = get_post_meta($nid,'system',true);
        $sms                    = get_post_meta($nid,'sms',true);
        
        
        $notification->trigger         = $details['trigger'];
        $notification->status          = isset($details['status']) ? $details['status'] : "active";
        $notification->type            = $details['type'];
        $notification->sendto          = $details['sendto'];
        
        
        
        $notification->is_email        = (($email['text'] != "" || $email['html'] != "") && $email['subject'] != "") ? true : false;
        $notification->is_system       = (isset($system['message']) && $system['message'] != "") ? true : false;
        $notification->is_sms          = (isset($sms['message']) && $sms['message'] != "") ? true : false;
        
        
        
        // if is_sms =============================================
        if ($notification->is_sms && isset($notify_me) && $notify_me && isset($cell) && !empty($cell)) {
        }
        
        // if is_system ==========================================
        if ($notification->is_system && $uid != 0) {
            get_user_notices($user->ID);
            $notices = Vars::$notices;
            
            $insert = array(
                'notification_id'   => $nid
              , 'status'            => 'unread'
              , 'sent_date'         => time()
              , 'args'              => $args
            );
            if(empty($notices)) {
                $notices = array();
            }
            
            $sequence = Sequencer\generate('NTC');
            
            $notices[$sequence] = $insert; 
            
                       
            update_user_meta($user->ID,'notices',$notices);
        }
        
        
        // if is_email ===========================================
        if ($notification->is_email) {
            send_email($uid,$email,$args, true);
        } 
        
    
    } 
    // if the system notification has set current user than get current user otherwise loop through the users needed.
}

function send_email($uid = 0, $contents,$args, $override = false) {

    if ( $uid == 0 && !isset($args['email'])) { return; }
    
    
    if ( isset($args['email'])) {
        $to_email = $args['email'];
    } else {
        $user               = new WP_User($uid);
        $to_email           = $user->user_email;
    }
    
    $from_address       = get_bloginfo('admin_email');

    
    $subject            = $contents['subject'];
    $html               = $contents['html'];
    $alttext            = $contents['text'];
    
    $headers            = "";
    
    if (empty($html)) {
        $message = $alttext;
        $message = strip_tags($message);
        // it's text based only... no need to check format preference.
    } else {
        $message = $html;
        $headers .= 'MIME-Version: 1.0' . "\r\n";
        $headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";

        // it's HTML formatted.
        // Check user preference if they want Text ONly??
    }
    
    foreach($args as $key => $val) {
        if ( (filter_var($val, FILTER_VALIDATE_URL) !== false) && !empty($html)) {
            $message = str_replace("{".$key."}","<a href='".$val."'>".$val."</a>",$message);
        } else {
            $message = str_replace("{".$key."}",$val,$message);
        }
        
    }
    
    // Additional headers
    //$headers .= 'To: '.$to_email.' <'.$to_email.'>' . "\r\n";
    $headers .= 'From: CICBV <'.$from_address.'>' . "\r\n";
    
    //die("To: $to_email, Subject: $subject, Message: $message, Header: $headers");
      
    mail($to_email, $subject, $message, $headers);
    
    
}

function getGroups($grpID=0) {
    global $userAccessManager;
        
    $groups = array();
    if($grpID > 0) {
        $userGroups = $userAccessManager->getAccessHandler()->getUserGroups($grpID);
        return $userGroups->getGroupName();        
    } else {
        $userGroups = $userAccessManager->getAccessHandler()->getUserGroups();
    }
    foreach($userGroups as $group) {
        $groups[$group->getId()] = $group->getGroupName();
    }
    return $groups;
}

function get_field_lookup($var) {
    return isset(Vars::$field_lookup[$var]) ? Vars::$field_lookup[$var] : $var;
}



function current_url() {
    $pageURL = 'http';
    if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";}
    $pageURL .= "://";
    if ($_SERVER["SERVER_PORT"] != "80") {
    $pageURL .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
    } else {
    $pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
    }
    return $pageURL;
}

class Actions {
    public static function wp_ajax_update_notification_count() {
        $count = get_num_notices();
        $return = array('count'=>$count);
        die(json_encode($return));
    }
    
    public static function wp_ajax_mark_read() {
        remove_notice($_POST['index']);
    }
    
    public static function wp_ajax_print_user_notices() {
        print_user_notices();
    }
    
    public static function wp_ajax_remove_attachment() {
        $id = $_POST['id'];
        $email = get_post_meta($id,'email',true);
        $attachments = $email['attachments'];
        foreach($attachments as $key => $name) {
            if ($name==$_POST['file']) {
                unset($attachments[$key]);
            }
        }
        
        $email['attachments'] = $attachments;
        
        update_post_meta($id, 'email', $email);
        
        $return = array('success' => 'true');
        die(json_encode($return));
        
    }
    
    
}

class Vars {
    public static $notices;
    public static $options;
    public static $field_lookup = array(
        'current_user'  => "Current Logged-in User"
      , 'allusers'      => "All Users"
    );
}
?>