<?php

namespace Zotlabs\Widget;

use App;
use Zotlabs\Lib\System;

class Cover_photo
{

    public function widget($arr)
    {

        require_once('include/channel.php');
        $o = '';


        if (App::$module == 'channel' && $_REQUEST['mid']) {
            return '';
        }

        $channel_id = 0;

        $site_banner = false;

        if (App::$module === 'home') {
            $channel = get_sys_channel();
            $channel_id = $channel['channel_id'];
            $site_banner = System::get_site_name();
        }

        if (array_key_exists('channel_id', $arr) && intval($arr['channel_id'])) {
            $channel_id = intval($arr['channel_id']);
        }
        if (!$channel_id) {
            $channel_id = App::$profile_uid;
        }
        if (!$channel_id) {
            return '';
        }

        // only show cover photos once per login session
        $hide_cover = false;
        if (array_key_exists('channels_visited', $_SESSION) && is_array($_SESSION['channels_visited']) && in_array($channel_id, $_SESSION['channels_visited'])) {
            $hide_cover = true;
        }
        if (!array_key_exists('channels_visited', $_SESSION)) {
            $_SESSION['channels_visited'] = [];
        }
        $_SESSION['channels_visited'][] = $channel_id;

        $channel = channelx_by_n($channel_id);

        if (array_key_exists('style', $arr) && isset($arr['style'])) {
            $style = $arr['style'];
        } else {
            $style = 'width:100%; height: auto;';
        }

        // ensure they can't sneak in an eval(js) function

        if (strpbrk($style, '(\'"<>') !== false) {
            $style = '';
        }

        if (array_key_exists('title', $arr) && isset($arr['title'])) {
            $title = $arr['title'];
        } else {
            $title = $channel['channel_name'];
        }


        if (array_key_exists('subtitle', $arr) && isset($arr['subtitle'])) {
            $subtitle = $arr['subtitle'];
        } else {
            $subtitle = str_replace('@', '&#x40;', $channel['xchan_addr']);
        }


        if ($site_banner) {
            $title = $site_banner;
            $subtitle = '';
        }

        $c = get_cover_photo($channel_id, 'html');

        if ($c) {
            $c = str_replace('src=', 'data-src=', $c);
            $photo_html = (($style) ? str_replace('alt=', ' style="' . $style . '" alt=', $c) : $c);

            $o = replace_macros(get_markup_template('cover_photo_widget.tpl'), array(
                '$photo_html' => $photo_html,
                '$title' => $title,
                '$subtitle' => $subtitle,
                '$hovertitle' => t('Click to show more'),
                '$hide_cover' => $hide_cover
            ));
        }
        return $o;
    }
}