streams/Code/Module/Search_ac.php

<?php

namespace Code\Module;

// Autocomplete for saved searches. Should probably be put in the same place as the other autocompletes

use Code\Web\Controller;

class Search_ac extends Controller
{

    public function init()
    {

        if (!local_channel()) {
            killme();
        }


        $start = (x($_REQUEST, 'start') ? $_REQUEST['start'] : 0);
        $count = (x($_REQUEST, 'count') ? $_REQUEST['count'] : 100);
        $search = (x($_REQUEST, 'search') ? $_REQUEST['search'] : EMPTY_STR);

        if (x($_REQUEST, 'query') && strlen($_REQUEST['query'])) {
            $search = $_REQUEST['query'];
        }

        $do_people = true;
        $do_tags = true;

        if (substr($search, 0, 1) === '@') {
            $do_tags = false;
            $search = substr($search, 1);
        }

        if (substr($search, 0, 1) === '#') {
            $do_people = false;
            $search = substr($search, 1);
        }

        // Priority to people searches

        if ($search) {
            $people_sql_extra = protect_sprintf(" AND xchan_name LIKE '%" . dbesc($search) . "%' ");
            $tag_sql_extra = protect_sprintf(" AND term LIKE '%" . dbesc($search) . "%' ");
        }

        $results = [];

        if ($do_people) {
            $r = q(
                "SELECT abook_id, xchan_name, xchan_photo_s, xchan_url, xchan_addr FROM abook 
				left join xchan on abook_xchan = xchan_hash WHERE abook_channel = %d 
				$people_sql_extra
				ORDER BY xchan_name ASC ",
                intval(local_channel())
            );

            if ($r) {
                foreach ($r as $g) {
                    $results[] = [
                        'photo' => $g['xchan_photo_s'],
                        'name' => '@' . $g['xchan_name'],
                        'id' => $g['abook_id'],
                        'link' => $g['xchan_url'],
                        'label' => '',
                        'nick' => '',
                    ];
                }
            }
        }

        if ($do_tags) {
            $r = q(
                "select distinct term, tid, url from term 
				where ttype in ( %d, %d ) $tag_sql_extra group by term order by term asc",
                intval(TERM_HASHTAG),
                intval(TERM_COMMUNITYTAG)
            );

            if ($r) {
                foreach ($r as $g) {
                    $results[] = [
                        'photo' => z_root() . '/images/hashtag.png',
                        'name' => '#' . $g['term'],
                        'id' => $g['tid'],
                        'link' => $g['url'],
                        'label' => '',
                        'nick' => '',
                    ];
                }
            }
        }

        json_return_and_die([
            'start' => $start,
            'count' => $count,
            'items' => $results,
        ]);
    }
}