<?php

use ComboStrap\Analytics;
use ComboStrap\LogUtility;
use ComboStrap\Page;
use ComboStrap\Sqlite;

/**
 * Copyright (c) 2021. ComboStrap, Inc. and its affiliates. All Rights Reserved.
 *
 * This source code is licensed under the GPL license found in the
 * COPYING  file in the root directory of this source tree.
 *
 * @license  GPL 3 (https://www.gnu.org/licenses/gpl-3.0.en.html)
 * @author   ComboStrap <support@combostrap.com>
 *
 */

require_once(__DIR__ . '/../class/'.'Analytics.php');

/**
 * Class action_plugin_combo_analytics
 * Update the analytics data
 */
class action_plugin_combo_analytics extends DokuWiki_Action_Plugin
{


    public function register(Doku_Event_Handler $controller)
    {

        /**
         * Called on every page write
         * https://www.dokuwiki.org/devel:event:io_wikipage_write
         * On update to an existing page this event is called twice,
         * once for the transfer of the old version to the attic (rev will have a value)
         * and once to write the new version of the page into the wiki (rev is false)
         */
        //$controller->register_hook('IO_WIKIPAGE_WRITE', 'AFTER', $this, 'handle_update_analytics', array());

        /**
         * Analytics to refresh because they have lost or gain a backlinks
         * are done via Sqlite table (The INDEXER_TASKS_RUN gives a way to
         * manipulate this queue)
         */
        $controller->register_hook('INDEXER_TASKS_RUN', 'BEFORE', $this, 'handle_refresh_analytics', array());

    }

    public function handle_update_analytics(Doku_Event $event, $param)
    {

        $rev = $event->data[3];
        if ($rev===false){
            $id = $event->data[2];
            $page = new Page($id);
            $page->refreshAnalytics();
        }


    }

    public function handle_refresh_analytics(Doku_Event $event, $param)
    {

        /**
         * Check that the actual page has analytics data
         * (if there is a cache, it's pretty quick)
         */
        global $ID;
        Analytics::process($ID,true);

        /**
         * Check the analytics to refresh
         */
        $sqlite = Sqlite::getSqlite();
        $res = $sqlite->query("SELECT ID FROM ANALYTICS_TO_REFRESH");
        if (!$res) {
            LogUtility::msg("There was a problem during the select: {$sqlite->getAdapter()->getDb()->errorInfo()}");
        }
        $rows = $sqlite->res2arr($res,true);
        $sqlite->res_close($res);
        foreach($rows as $row){
            $page = new Page($row['ID']);
            $page->refreshAnalytics();
        }

    }
}