streams/Zotlabs/Module/Fedi_id.php

<?php

namespace Zotlabs\Module;

use Zotlabs\Web\Controller;


class Fedi_id extends Controller {

	function post() {
		$channel = channelx_by_n(argv(1));
		if (! $channel) {
			return;
		}
		if ($_REQUEST['address']) {
			$x = discover_by_webbie(trim($_REQUEST['address']));
			if ($x) {
				$ab = q("select * from abook where abook_xchan = '%s' and abook_channel = %d",
					dbesc($x),
					intval($channel['channel_id'])
				);
				if ($ab) {
					notice( t('You are already connected with this channel.') );
					goaway(channel_url($channel));
				}
				$r = q("select * from xchan where xchan_hash = '%s'",
					dbesc($x)
				);
				if ($r && $r[0]['xchan_follow']) {
					goaway(sprintf($r[0]['xchan_follow'],urlencode(channel_reddress($channel))));
				}				
			}

			notice( t('Unknown or unreachable identifier') );
			return;
		}
	}

	function get() {

		return replace_macros(get_markup_template('fedi_id.tpl'),
			[
				'$title'   => t('Home instance'),
				'$address' => [ 'address', t('Enter your channel address or fediverse ID (e.g. channel@example.com)'), t('If you do not have a fediverse ID, please use your browser \'back\' button to return to the previous page'), '' ],
				'$action'  => 'fedi_id/' . argv(1),
				'$method'  => 'post',
				'$submit'  => t('Connect')
			]
		);	

	}

}