<?php
/**
 * DokuWiki plugin for piwik2
 *
 * Generates the inserted js/html code that is inserted into dom (HTML-HEAD)
 *
 * @license GPLv3 (http://www.gnu.org/licenses/gpl.html)
 * @author  Marcel Lange <info@ask-sheldon.con>
 */
require_once(DOKU_INC . 'inc/auth.php');


/**
 * Injects the necessary trackingcodes for piwik tracking (v2.x) into DOM
 * like specified in the plugin manager fields
 */
function piwik_code()
{
    global $conf;

    if (isset($conf['plugin']['piwik2']['js_tracking_code'])
        || (isset($conf['plugin']['piwik2']['img_tracking_code']))
    ) {
        // Config does not contain keys if they are default;
        // so check whether they are set & to non-default value

        // default 0, so check if it's not set or 0
        if (!isset($conf['plugin']['piwik2']['track_admin_user'])
            || $conf['plugin']['piwik2']['track_admin_user'] == 0
        ) {
            if (isset($_SERVER['REMOTE_USER']) && auth_isadmin()) {
                return;
            }
        }

        // default 1, so check if it's set and 0
        if (isset($conf['plugin']['piwik2']['track_user'])
            && $conf['plugin']['piwik2']['track_user'] == 0
        ) {
            if (isset($_SERVER['REMOTE_USER'])) {
                return;
            }
        }

        //changes made by Marcel Lange (info@bravehartk2.de)
        $trackingCode = (isset($conf['plugin']['piwik2']['js_tracking_code']))
            ? $conf['plugin']['piwik2']['js_tracking_code'] : '';
        if (isset($conf['plugin']['piwik2']['use_img_tracking'])
            && $conf['plugin']['piwik2']['use_img_tracking'] == 1
            && isset($conf['plugin']['piwik2']['img_tracking_code'])
        ) {
            $trackingCode = $conf['plugin']['piwik2']['img_tracking_code'];
        }
        ptln($trackingCode);
    } else {
        // Show configuration tip for admin
        if (isset($_SERVER['REMOTE_USER']) && auth_isadmin()) {
            msg('Please configure the piwik2 plugin');
        }
    }
}