<?php
/**
 * versions.php
 * Code by Strangecode :: www.strangecode.com :: This document contains copyrighted information
 */

// require_once dirname(__FILE__) . '/_config.inc.php';

$auth->requireLogin();
App::sslOn();

require_once 'codebase/lib/RecordVersion.inc.php';
require_once 'codebase/lib/RecordLock.inc.php';

/******************************************************************************
 * CODE CONFIG
 *****************************************************************************/

$version = RecordVersion::getInstance($GLOBALS['auth']);

// Query arguments to retain their values between page requests.
App::carryQuery('record_table');
App::carryQuery('record_key');
App::carryQuery('record_val');
App::carryQuery('version_title');

// Titles and navigation header.
$nav->addPage(_("Versions"), $_SERVER['PHP_SELF']);

/******************************************************************************
 * MAIN
 *****************************************************************************/

// Request arguments.
$version_id = getFormData('version_id');
$record_table = getFormData('record_table');
$record_key = getFormData('record_key');
$record_val = getFormData('record_val');

if ('' == $version_id && ('' == $record_table || '' == $record_key || '' == $record_val)) {
    App::raiseMsg(_("Record not specified for versioning."), MSG_WARNING, __FILE__, __LINE__);
    App::logMsg('Record not specified for versioning.', LOG_WARNING, __FILE__, __LINE__);
    App::dieBoomerangURL();
}

if (getFormData('boomerang', false) && isset($_SERVER['HTTP_REFERER'])) {
    // We remember which page we came from so we can go back there.
    App::setBoomerangURL($_SERVER['HTTP_REFERER'], 'versions');
}

// What action to take.
switch (getFormData('op')) {

case _("Cancel") :
    App::dieBoomerangURL('versions', false);
    break;

case 'view' :
    $data = $version->getData($version_id);
    $versionrecord = $version->getVerson($version_id);
    $nav->addPage(sprintf(_("View <em>%s</em> version %s (%s)"), $versionrecord['version_title'], $version_id, $versionrecord['version_datetime']));
    $main_template = 'versions_view.ihtml';
    break;

case 'diff' :
    $data = $version->getData($version_id);
    $versionrecord = $version->getVerson($version_id);
    $current = $version->getCurrent($record_table, $record_key, $record_val);
    if (serialize($data) == serialize($current)) {
        App::raiseMsg(sprintf(_("Version <strong>%s</strong> is identical to the current record"), $version_id), MSG_NOTICE, __FILE__, __LINE__);
    }
    $nav->addPage(sprintf(_("Difference between version %s (%s) and current record."), $version_id, $versionrecord['version_datetime']));
    $main_template = 'versions_diff.ihtml';
    break;

case 'restore' :
    if (!isset($lock) || !is_a($lock, 'RecordLock')) {
        $lock =& RecordLock::getInstance($auth);
    }
    $lock->select($record_table, $record_key, $record_val);
    if ($lock->isLocked() && !$lock->isMine()) {
        $lock->dieErrorPage();
    }

    if ($v = $version->restore($version_id)) {
        // Create version of this restored record as the "current" version.
        $version->create($record_table, $record_key, $record_val, $v['version_title']);
        App::raiseMsg(sprintf(_("The record <strong>%s</strong> has been replaced with <strong>%s</strong> version <strong>%s</strong> from <strong>%s</strong>."), getFormData('version_title'), $v['version_title'], $version_id, $v['version_datetime']), MSG_SUCCESS, __FILE__, __LINE__);
        App::dieBoomerangURL('versions', array('break_list_cache'=>'true', false));
    } else {
        App::raiseMsg(_("Version restoration failed."), MSG_ERR, __FILE__, __LINE__);
        App::dieURL($_SERVER['PHP_SELF']);
    }
    break;

default :
    $versions = $version->getList($record_table, $record_key, $record_val);
    $_POST['version_title'] = $versions[0]['version_title'];
    if (is_array($versions) && !empty($versions)) {
        $nav->addPage(sprintf(_("%s versions of record <em>%s</em>"), sizeof($versions), $versions[0]['version_title']));
        $main_template = 'versions_list.ihtml';
    } else {
        App::raiseMsg(sprintf(_("No saved versions available for this record"), null), MSG_NOTICE, __FILE__, __LINE__);
        App::dieBoomerangURL('versions');
    }
}


/******************************************************************************
 * TEMPLATE INITIALIZATION
 *****************************************************************************/

include 'header.ihtml';
include 'codebase/services/templates/' . $main_template;
include 'footer.ihtml';

?>