streams/Code/Widget/Suggestions.php

<?php

namespace Code\Widget;

use App;
use Code\Lib\Apps;
use Code\Render\Theme;
use Code\Lib\Socgraph;

class Suggestions implements WidgetInterface
{

    public function widget(array $arguments): string
    {

        if ((!local_channel()) || (!Apps::system_app_installed(local_channel(), 'Suggest Channels'))) {
            return EMPTY_STR;
        }

        $r = Socgraph::suggestion_query(local_channel(), get_observer_hash(), 0, 20);

        if (!$r) {
            return EMPTY_STR;
        }

        $arguments = [];

        // Get two random entries from the top 20 returned.
        // We'll grab the first one and the one immediately following.
        // This will throw some entropy into the situation, so you won't
        // be looking at the same two mug shots every time the widget runs

        $index = ((count($r) > 2) ? mt_rand(0, count($r) - 2) : 0);

        for ($x = $index; $x <= ($index + 1); $x++) {
            $rr = $r[$x];
            if (!$rr['xchan_url']) {
                break;
            }

            $connlnk = z_root() . '/follow/?url=' . $rr['xchan_addr'];

            $arguments[] = [
                'url' => chanlink_url($rr['xchan_url']),
                'profile' => $rr['xchan_url'],
                'name' => $rr['xchan_name'],
                'photo' => $rr['xchan_photo_m'],
                'ignlnk' => z_root() . '/directory?return=' . base64_encode(App::$query_string) . '&ignore=' . $rr['xchan_hash'],
                'conntxt' => intval($rr['xchan_type']) === 1 ? t('Join') : t('Connect'),
                'connlnk' => $connlnk,
                'ignore' => t('Ignore/Hide')
            ];
        }

        return replace_macros(Theme::get_template('suggest_widget.tpl'), [
            '$title' => t('Suggestions'),
            '$more' => t('See more...'),
            '$entries' => $arguments
        ]);
    }
}