1<?php
2
3if(!defined('DOKU_INC')) die();
4
5class action_plugin_approve_cache extends DokuWiki_Action_Plugin
6{
7    /**
8     * Registers a callback function for a given event
9     *
10     * @param Doku_Event_Handler $controller DokuWiki's event controller object
11     *
12     * @return void
13     */
14    public function register(Doku_Event_Handler $controller)
15    {
16        $controller->register_hook('PARSER_CACHE_USE', 'BEFORE', $this, 'handle_parser_cache_use');
17    }
18    /**
19     * @param Doku_Event $event event object by reference
20     * @param mixed $param [the parameters passed as fifth argument to register_hook() when this
21     *                           handler was registered]
22     *
23     * @return void
24     */
25    public function handle_parser_cache_use(Doku_Event $event, $param)
26    {
27        /** @var cache_renderer $cache */
28        $cache = $event->data;
29
30        if(!$cache->page) return;
31        //purge only xhtml cache
32        if($cache->mode != 'xhtml') return;
33
34        //Check if it is plugins
35        $approve = p_get_metadata($cache->page, 'plugin approve');
36        if(!$approve) return;
37
38        if ($approve['dynamic_approver']) {
39            $cache->_nocache = true;
40        } elseif ($approve['approve_table']) {
41            try {
42                /** @var \helper_plugin_approve_db $db_helper */
43                $db_helper = plugin_load('helper', 'approve_db');
44                $sqlite = $db_helper->getDB();
45                $cache->depends['files'][] = $sqlite->getAdapter()->getDbFile();
46            } catch (Exception $e) {
47                msg($e->getMessage(), -1);
48                return;
49            }
50        }
51    }
52}
53