1<?php
2/**
3 * DokuWiki Plugin quicksubscribe (Action Component)
4 *
5 * @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
6 * @author  Andreas Gohr <gohr@cosmocode.de>
7 */
8
9class action_plugin_quicksubscribe extends DokuWiki_Action_Plugin
10{
11    /** @inheritdoc */
12    function register(Doku_Event_Handler $controller)
13    {
14        $controller->register_hook('AJAX_CALL_UNKNOWN', 'BEFORE', $this, 'handle_ajax_call_unknown');
15    }
16
17    /**
18     * Handle subscription/unsubscription AJAX events
19     *
20     * @param Doku_Event $event
21     * @param $param
22     */
23    function handle_ajax_call_unknown(Doku_Event $event, $param)
24    {
25        if ($event->data != 'plugin_quicksubscribe') return;
26        $event->preventDefault();
27        $event->stopPropagation();
28
29        global $INPUT;
30
31        $ns = cleanID($INPUT->str('ns')) . ':'; // we only handle namespaces
32        $do = $INPUT->str('do');
33
34        $ok = false;
35        $msg = '';
36
37        $sub = new Subscription();
38
39        if ($do == 'subscribe') {
40            // new subscriptions
41            try {
42                $ok = $sub->add($ns, $_SERVER['REMOTE_USER'], 'list');
43            } catch (\Exception $ignored) {
44                $ok = false;
45            }
46            if ($ok) {
47                $msg = sprintf($this->getLang('sub_succ'), prettyprint_id($ns));
48            } else {
49                $msg = sprintf($this->getLang('sub_fail'), prettyprint_id($ns));
50            }
51        } elseif ($do == 'unsubscribe') {
52            // subscription removal
53            $ok = $sub->remove($ns, $_SERVER['REMOTE_USER']);
54            if ($ok) {
55                $msg = sprintf($this->getLang('unsub_succ'), prettyprint_id($ns));
56            } else {
57                $msg = sprintf($this->getLang('unsub_fail'), prettyprint_id($ns));
58            }
59        }
60
61        if (!$ok) http_status(400);
62        echo '<p>' . $msg . '</p>';
63    }
64}
65