<?php
 
if(!defined('DOKU_INC')) die();
 
/**
 * @author Myron Turner <turnermm@my-provider.ca>
 */
class action_plugin_eventcheck extends DokuWiki_Action_Plugin { 

  
    /**
     * Register its handlers with the DokuWiki's event controller
     */
    public function register(Doku_Event_Handler $controller) {

        $events = array(
            'ACTION_HEADERS_SEND', 'HTML_PAGE_FROMTEMPLATE', 
            'HTML_PROFILEFORM_INJECTION', 'HTML_REGISTERFORM_INJECTION', 
            'IO_NAMESPACE_CREATED', 'IO_NAMESPACE_DELETED', 
            'IO_WIKIPAGE_READ', 'IO_WIKIPAGE_WRITE', 'PARSER_CACHE_USE',
            'PARSER_HANDLER_DONE','PARSER_WIKITEXT_PREPROCESS',
            'RENDERER_CONTENT_POSTPROCESS', 'TPL_ACT_RENDER',
            'TPL_CONTENT_DISPLAY', 'TPL_METAHEADER_OUTPUT'
           );

        foreach($events as $evt) {
          $controller->register_hook($evt, 'BEFORE', $this, 'write_event_before');
          $controller->register_hook($evt, 'AFTER', $this, 'write_event_after'); 
        }
    }

    /**
     * Handle write action before event
     *
     * @param Doku_Event $event  event object by reference
     * @param mixed      $param  empty optional 5th parameter of register_hook()
     * @return void
     */
    public function write_event_before (Doku_Event $event, $param) {
        $this->write_event ($event, $param,'BEFORE');
    }

    /**
     * Handle write action after event
     *
     * @param Doku_Event $event  event object by reference
     * @param mixed      $param  empty optional 5th parameter of register_hook()
     * @return void
     */
    public function write_event_after (Doku_Event $event, $param) {
        $this->write_event ($event, $param, 'AFTER');
    }

    /**
     * Write event information to file
     * 
     * @param Doku_Event $event  event object by reference
     * @param mixed      $param  empty
     * @param string     $advise the advise the hook receives
     */
    protected function write_event (Doku_Event $event, $param=null, $advise) {     
        $filename = DOKU_INC . 'eventcheck.txt';
        if (!$handle = fopen($filename, 'a')) {
            return;    
        }

        $somecontent = "\n --- $advise ---\n";
        $somecontent .=  "\$_REQUEST: " . print_r($_REQUEST, true) . "\n";
        $somecontent .= print_r($event, true) . "\n";

        fwrite($handle, $somecontent);
        fclose($handle);
    }
}