File Source for CourseRestorer.class.php

<?php // $Id: CourseRestorer.class.php 15301 2008-05-16 03:21:42Z yannoo $
/*
==============================================================================
Dokeos - elearning and course management software
Copyright (c) 2008 Dokeos SPRL
Copyright (c) 2003 Ghent University (UGent)
Copyright (c) 2001 Universite catholique de Louvain (UCL)
Copyright (c) Bart Mollet (bart.mollet@hogent.be)
For a full list of contributors, see "credits.txt".
The full license can be read in "license.txt".
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
See the GNU General Public License for more details.
Contact address: Dokeos, 44 rue des palais, B-1030 Brussels, Belgium
Mail: info@dokeos.com
==============================================================================
*/
require_once ('Course.class.php');
require_once ('Event.class.php');
require_once ('Link.class.php');
require_once ('ToolIntro.class.php');
require_once ('LinkCategory.class.php');
require_once ('ForumCategory.class.php');
require_once ('Forum.class.php');
require_once ('ForumTopic.class.php');
require_once ('ForumPost.class.php');
require_once ('CourseDescription.class.php');
require_once ('Learnpath.class.php');
require_once ('Survey.class.php');
require_once ('SurveyQuestion.class.php');
require_once ('mkdirr.php');
require_once ('rmdirr.php');
define('FILE_SKIP', 1);
define('FILE_RENAME', 2);
define('FILE_OVERWRITE', 3);
/**
* Class to restore items from a course object to a Dokeos-course
* @author Bart Mollet <bart.mollet@hogent.be>
* @package dokeos.backup
*/
class CourseRestorer
{
/**
* The course-object
*/
var $course;
/**
* What to do with files with same name (FILE_SKIP, FILE_RENAME or
* FILE_OVERWRITE)
*/
var $file_option;
/**
* Create a new CourseRestorer
*/
function CourseRestorer($course)
{
$this->course = $course;
$this->file_option = FILE_RENAME;
}
/**
* Set the file-option
* @param constant $options What to do with files with same name (FILE_SKIP,
* FILE_RENAME or FILE_OVERWRITE)
*/
function set_file_option($option)
{
$this->file_option = $option;
}
/**
* Restore a course.
* @param string $destination_course_code The code of the Dokeos-course in
* which the resources should be stored. Default: Current Dokeos-course.
*/
function restore($destination_course_code = '')
{
if ($destination_course_code == '')
{
$course_info = api_get_course_info();
$this->course->destination_db = $course_info['dbName'];
$this->course->destination_path = $course_info['path'];
}
else
{
$course_info = Database :: get_course_info($destination_course_code);
$this->course->destination_db = $course_info['database'];
$this->course->destination_path = $course_info['directory'];
}
$this->restore_links();
$this->restore_tool_intro();
$this->restore_events();
$this->restore_announcements();
$this->restore_documents();
$this->restore_scorm_documents();
$this->restore_course_descriptions();
//$this->restore_forums();
$this->restore_quizzes(); // after restore_documents! (for correct import of sound/video)
$this->restore_learnpaths();
$this->restore_surveys();
// Restore the item properties
$table = Database :: get_course_table(TABLE_ITEM_PROPERTY, $this->course->destination_db);
foreach ($this->course->resources as $type => $resources)
{
foreach ($resources as $id => $resource)
{
foreach ($resource->item_properties as $property)
{
// First check if there isn't allready a record for this resource
$sql = "SELECT * FROM $table WHERE tool = '".$property['tool']."' AND ref = '".$resource->destination_id."'";
$res = api_sql_query($sql,__FILE__,__LINE__);
if( Database::num_rows($res) == 0)
{
// The to_group_id and to_user_id are set to default values as users/groups possibly not exist in the target course
$sql = "INSERT INTO $table SET
tool = '".$property['tool']."',
insert_user_id = '".$property['insert_user_id']."',
insert_date = '".$property['insert_date']."',
lastedit_date = '".$property['lastedit_date']."',
ref = '".$resource->destination_id."',
lastedit_type = '".$property['lastedit_type']."',
lastedit_user_id = '".$property['lastedit_user_id']."',
visibility = '".$property['visibility']."',
start_visible = '".$property['start_visible']."',
end_visible = '".$property['end_visible']."',
to_user_id = '".$property['to_user_id']."',
to_group_id = '0'";
;
api_sql_query($sql, __FILE__, __LINE__);
}
}
}
}
// Restore the linked-resources
$table = Database :: get_course_table(TABLE_LINKED_RESOURCES, $this->course->destination_db);
foreach ($this->course->resources as $type => $resources)
{
foreach ($resources as $id => $resource)
{
$linked_resources = $resource->get_linked_resources();
foreach ($linked_resources as $to_type => $to_ids)
{
foreach ($to_ids as $index => $to_id)
{
$to_resource = $this->course->resources[$to_type][$to_id];
$sql = "INSERT INTO ".$table." SET source_type = '".$type."', source_id = '".$resource->destination_id."', resource_type='".$to_type."', resource_id='".$to_resource->destination_id."' ";
api_sql_query($sql, __FILE__, __LINE__);
}
}
}
}
}
/**
* Restore documents
*/
function restore_documents()
{
if ($this->course->has_resources(RESOURCE_DOCUMENT))
{
$table = Database :: get_course_table(TABLE_DOCUMENT, $this->course->destination_db);
$resources = $this->course->resources;
foreach ($resources[RESOURCE_DOCUMENT] as $id => $document)
{
$path = api_get_path(SYS_COURSE_PATH).$this->course->destination_path.'/';
$perm = api_get_setting('permissions_for_new_directories');
$perm = octdec(!empty($perm)?$perm:'0770');
mkdirr(dirname($path.$document->path),$perm);
if ($document->file_type == DOCUMENT)
{
if (file_exists($path.$document->path))
{
switch ($this->file_option)
{
case FILE_OVERWRITE :
copy($this->course->backup_path.'/'.$document->path, $path.$document->path);
$sql = "SELECT id FROM ".$table." WHERE path='/".substr($document->path, 9)."'";
$res = api_sql_query($sql, __FILE__, __LINE__);
$obj = Database::fetch_object($res);
$this->course->resources[RESOURCE_DOCUMENT][$id]->destination_id = $obj->id;
$sql = "UPDATE ".$table." SET comment = '".Database::escape_string($document->comment)."', title='".Database::escape_string($document->title)."', size='".$document->size."' WHERE id = '".$obj->id."'";
api_sql_query($sql, __FILE__, __LINE__);
break;
case FILE_SKIP :
$sql = "SELECT id FROM ".$table." WHERE path='/".Database::escape_string(substr($document->path, 9))."'";
$res = api_sql_query($sql, __FILE__, __LINE__);
$obj = Database::fetch_object($res);
$this->course->resources[RESOURCE_DOCUMENT][$id]->destination_id = $obj->id;
break;
case FILE_RENAME :
$i = 1;
$ext = explode('.', basename($document->path));
if (count($ext) > 1)
{
$ext = array_pop($ext);
$file_name_no_ext = substr($document->path, 0, - (strlen($ext) + 1));
$ext = '.'.$ext;
}
else
{
$ext = '';
$file_name_no_ext = $document->path;
}
$new_file_name = $file_name_no_ext.'_'.$i.$ext;
$file_exists = file_exists($path.$new_file_name);
while ($file_exists)
{
$i ++;
$new_file_name = $file_name_no_ext.'_'.$i.$ext;
$file_exists = file_exists($path.$new_file_name);
}
copy($this->course->backup_path.'/'.$document->path, $path.$new_file_name);
$sql = "INSERT INTO ".$table." SET path = '/".Database::escape_string(substr($new_file_name, 9))."', comment = '".Database::escape_string($document->comment)."', title = '".Database::escape_string($document->title)."' ,filetype='".$document->file_type."', size= '".$document->size."'";
api_sql_query($sql, __FILE__, __LINE__);
$this->course->resources[RESOURCE_DOCUMENT][$id]->destination_id = Database::get_last_insert_id();
//also insert into item_property
/*
api_item_property_update(
array('dbName'=>$this->course->destination_db,
TOOL_DOCUMENT,
$this->course->resource[RESOURCE_DOCUMENT][$id]->destination_id,
'DocumentAdded',
);
*/
break;
} // end switch
} // end if file exists
else
{
//make sure the source file actually exists
if(is_file($this->course->backup_path.'/'.$document->path) && is_readable($this->course->backup_path.'/'.$document->path) && is_dir(dirname($path.$document->path)) && is_writeable(dirname($path.$document->path)))
{
copy($this->course->backup_path.'/'.$document->path, $path.$document->path);
$sql = "INSERT INTO ".$table." SET path = '/".substr($document->path, 9)."', comment = '".Database::escape_string($document->comment)."', title = '".Database::escape_string($document->title)."' ,filetype='".$document->file_type."', size= '".$document->size."'";
api_sql_query($sql, __FILE__, __LINE__);
$this->course->resources[RESOURCE_DOCUMENT][$id]->destination_id = Database::get_last_insert_id();
}
else
{
if(is_file($this->course->backup_path.'/'.$document->path) && is_readable($this->course->backup_path.'/'.$document->path))
{
error_log('Course copy generated an ignoreable error while trying to copy '.$this->course->backup_path.'/'.$document->path.': file not found');
}
if(!is_dir(dirname($path.$document->path)))
{
error_log('Course copy generated an ignoreable error while trying to copy to '.dirname($path.$document->path).': directory not found');
}
if(!is_writeable(dirname($path.$document->path)))
{
error_log('Course copy generated an ignoreable error while trying to copy to '.dirname($path.$document->path).': directory not writeable');
}
}
} // end file doesn't exist
}
else
{
$sql = "SELECT id FROM ".$table." WHERE path = '/".Database::escape_string(substr($document->path, 9))."'";
$res = api_sql_query($sql,__FILE__,__LINE__);
if( Database::num_rows($res)> 0)
{
$obj = Database::fetch_object($res);
$this->course->resources[RESOURCE_DOCUMENT][$id]->destination_id = $obj->id;
}
else
{
$sql = "INSERT INTO ".$table." SET path = '/".Database::escape_string(substr($document->path, 9))."', comment = '".Database::escape_string($document->comment)."', title = '".Database::escape_string($document->title)."' ,filetype='".$document->file_type."', size= '".$document->size."'";
api_sql_query($sql, __FILE__, __LINE__);
$this->course->resources[RESOURCE_DOCUMENT][$id]->destination_id = Database::get_last_insert_id();
}
} // end folder
} // end for each
}
}
/**
* Restore scorm documents
* TODO @TODO check that the restore function with renaming doesn't break the scorm structure!
*/
function restore_scorm_documents()
{
if ($this->course->has_resources(RESOURCE_SCORM))
{
$resources = $this->course->resources;
foreach ($resources[RESOURCE_SCORM] as $id => $document)
{
$path = api_get_path(SYS_COURSE_PATH).$this->course->destination_path.'/';
$perm = api_get_setting('permissions_for_new_directories');
$perm = octdec(!empty($perm)?$perm:'0770');
mkdirr(dirname($path.$document->path),$perm);
if (file_exists($path.$document->path))
{
switch ($this->file_option)
{
case FILE_OVERWRITE :
rmdirr($path.$document->path);
copyDirTo($this->course->backup_path.'/'.$document->path, $path.dirname($document->path), false);
break;
case FILE_SKIP :
break;
case FILE_RENAME :
$i = 1;
$ext = explode('.', basename($document->path));
if (count($ext) > 1)
{
$ext = array_pop($ext);
$file_name_no_ext = substr($document->path, 0, - (strlen($ext) + 1));
$ext = '.'.$ext;
}
else
{
$ext = '';
$file_name_no_ext = $document->path;
}
$new_file_name = $file_name_no_ext.'_'.$i.$ext;
$file_exists = file_exists($path.$new_file_name);
while ($file_exists)
{
$i ++;
$new_file_name = $file_name_no_ext.'_'.$i.$ext;
$file_exists = file_exists($path.$new_file_name);
}
rename($this->course->backup_path.'/'.$document->path,$this->course->backup_path.'/'.$new_file_name);
copyDirTo($this->course->backup_path.'/'.$new_file_name, $path.dirname($new_file_name), false);
rename($this->course->backup_path.'/'.$new_file_name,$this->course->backup_path.'/'.$document->path);
break;
} // end switch
} // end if file exists
else
{
copyDirTo($this->course->backup_path.'/'.$document->path, $path.dirname($document->path), false);
}
} // end for each
}
}
/**
* Restore forums
*/
function restore_forums()
{
if ($this->course->has_resources(RESOURCE_FORUM))
{
$table_forum = Database :: get_course_table(TABLE_FORUM, $this->course->destination_db);
$table_topic = Database :: get_course_table(TABLE_FORUM_POST, $this->course->destination_db);
$table_post = Database :: get_course_table(TABLE_FORUM_POST, $this->course->destination_db);
$resources = $this->course->resources;
foreach ($resources[RESOURCE_FORUM] as $id => $forum)
{
$cat_id = $this->restore_forum_category($forum->category_id);
$sql = "INSERT INTO ".$table_forum." SET forum_name = '".Database::escape_string($forum->title)."', forum_desc = '".Database::escape_string($forum->description)."', cat_id = '".$cat_id."', forum_access='2'";
api_sql_query($sql, __FILE__, __LINE__);
$new_id = Database::get_last_insert_id();
$this->course->resources[RESOURCE_FORUM][$id]->destination_id = $new_id;
$forum_topics = 0;
if (is_array($this->course->resources[RESOURCE_FORUMTOPIC]))
{
foreach ($this->course->resources[RESOURCE_FORUMTOPIC] as $topic_id => $topic)
{
if ($topic->forum_id == $id)
{
$this->restore_topic($topic_id, $new_id);
$forum_topics ++;
}
}
}
if ($forum_topics > 0)
{
$last_post = $this->course->resources[RESOURCE_FORUMPOST][$forum->last_post];
$sql = "UPDATE ".$table_forum." SET forum_topics = ".$forum_topics.", forum_last_post_id = ".$last_post->destination_id." WHERE forum_id = '".$new_id."' ";
api_sql_query($sql, __FILE__, __LINE__);
}
}
}
}
/**
* Restore forum-categories
*/
function restore_forum_category($id)
{
$forum_cat_table = Database :: get_course_table(TABLE_FORUM_CATEGORY, $this->course->destination_db);
$resources = $this->course->resources;
$forum_cat = $resources[RESOURCE_FORUMCATEGORY][$id];
if (!$forum_cat->is_restored())
{
$sql = "INSERT INTO ".$forum_cat_table." SET cat_title = '".Database::escape_string($forum_cat->title.' ('.$this->course->code.')')."'";
api_sql_query($sql, __FILE__, __LINE__);
$new_id = Database::get_last_insert_id();
$this->course->resources[RESOURCE_FORUMCATEGORY][$id]->destination_id = $new_id;
return $new_id;
}
return $this->course->resources[RESOURCE_FORUMCATEGORY][$id]->destination_id;
}
/**
* Restore a forum-topic
*/
function restore_topic($id, $forum_id)
{
$table = Database :: get_course_table(TABLE_FORUM_POST, $this->course->destination_db);
$resources = $this->course->resources;
$topic = $resources[RESOURCE_FORUMTOPIC][$id];
$sql = "INSERT INTO ".$table." SET topic_title = '".Database::escape_string($topic->title)."', topic_time = '".$topic->time."', nom = '".Database::escape_string($topic->lastname)."', prenom = '".Database::escape_string($topic->firstname)."', topic_notify = '".$topic->topic_notify."', forum_id = '".$forum_id."'";
api_sql_query($sql, __FILE__, __LINE__);
$new_id = Database::get_last_insert_id();
$this->course->resources[RESOURCE_FORUMTOPIC][$id]->destination_id = $new_id;
$topic_replies = -1;
foreach ($this->course->resources[RESOURCE_FORUMPOST] as $post_id => $post)
{
if ($post->topic_id == $id)
{
$topic_replies ++;
$this->restore_post($post_id, $new_id, $forum_id);
}
}
if ($topic_replies >= 0)
{
$last_post = $this->course->resources[RESOURCE_FORUMPOST][$topic->last_post];
$sql = "UPDATE ".$table." SET topic_replies = '".$topic_replies."', topic_last_post_id = ".$last_post->destination_id;
api_sql_query($sql, __FILE__, __LINE__);
}
return $new_id;
}
/**
* restore a forum-post
* @todo restore tree-structure of posts.
*/
function restore_post($id, $topic_id, $forum_id)
{
$table_post = Database :: get_course_table(TABLE_FORUM_POST, $this->course->destination_db);
$table_posttext = Database :: get_course_table(TOOL_FORUM_POST_TEXT_TABLE, $this->course->destination_db);
$resources = $this->course->resources;
$post = $resources[RESOURCE_FORUMPOST][$id];
$sql = "INSERT INTO ".$table_post." SET topic_id = '".$topic_id."', post_time = '".$post->post_time."', forum_id = '".$forum_id."', nom = '".Database::escape_string($post->lastname)."', prenom = '".Database::escape_string($post->firstname)."', topic_notify = '".$post->topic_notify."', poster_ip = '".$post->poster_ip."'";
api_sql_query($sql, __FILE__, __LINE__);
$new_id = Database::get_last_insert_id();
$this->course->resources[RESOURCE_FORUMPOST][$id]->destination_id = $new_id;
$sql = "INSERT INTO ".$table_posttext." SET post_text = '".Database::escape_string($post->text)."', post_title = '".Database::escape_string($post->title)."', post_id = '".$new_id."'";
api_sql_query($sql, __FILE__, __LINE__);
return $new_id;
}
/**
* Restore links
*/
function restore_links()
{
if ($this->course->has_resources(RESOURCE_LINK))
{
$link_table = Database :: get_course_table(TABLE_LINK, $this->course->destination_db);
$resources = $this->course->resources;
foreach ($resources[RESOURCE_LINK] as $id => $link)
{
$cat_id = $this->restore_link_category($link->category_id);
$sql = "SELECT MAX(display_order) FROM $link_table WHERE category_id='" . Database::escape_string($cat_id). "'";
$result = api_sql_query($sql, __FILE__, __LINE__);
list($max_order) = Database::fetch_array($result);
$sql = "INSERT INTO ".$link_table." SET url = '".Database::escape_string($link->url)."', title = '".Database::escape_string($link->title)."', description = '".Database::escape_string($link->description)."', category_id='".$cat_id."', on_homepage = '".$link->on_homepage."', display_order='".($max_order+1)."'";
api_sql_query($sql, __FILE__, __LINE__);
$this->course->resources[RESOURCE_LINK][$id]->destination_id = Database::get_last_insert_id();
}
}
}
/**
* Restore tool intro
*/
function restore_tool_intro()
{
if ($this->course->has_resources(RESOURCE_TOOL_INTRO))
{
$tool_intro_table = Database :: get_course_table(TABLE_TOOL_INTRO, $this->course->destination_db);
$resources = $this->course->resources;
foreach ($resources[RESOURCE_TOOL_INTRO] as $id => $tool_intro)
{
$sql = "DELETE FROM ".$tool_intro_table." WHERE id='".Database::escape_string($tool_intro->id)."'";
api_sql_query($sql, __FILE__, __LINE__);
$sql = "INSERT INTO ".$tool_intro_table." SET id='".Database::escape_string($tool_intro->id)."', intro_text = '".Database::escape_string($tool_intro->intro_text)."'";
api_sql_query($sql, __FILE__, __LINE__);
$this->course->resources[RESOURCE_TOOL_INTRO][$id]->destination_id = Database::get_last_insert_id();
}
}
}
/**
* Restore a link-category
*/
function restore_link_category($id)
{
if ($id == 0)
return 0;
$link_cat_table = Database :: get_course_table(TABLE_LINK_CATEGORY, $this->course->destination_db);
$resources = $this->course->resources;
$link_cat = $resources[RESOURCE_LINKCATEGORY][$id];
if (is_object($link_cat) && !$link_cat->is_restored())
{
$sql = "SELECT MAX(display_order) FROM $link_cat_table";
$result=api_sql_query($sql,__FILE__,__LINE__);
list($orderMax)=Database::fetch_array($result,'NUM');
$display_order=$orderMax+1;
$sql = "INSERT INTO ".$link_cat_table." SET category_title = '".Database::escape_string($link_cat->title)."', description='".Database::escape_string($link_cat->description)."', display_order='".$display_order."' ";
api_sql_query($sql, __FILE__, __LINE__);
$new_id = Database::get_last_insert_id();
$this->course->resources[RESOURCE_LINKCATEGORY][$id]->destination_id = $new_id;
return $new_id;
}
return $this->course->resources[RESOURCE_LINKCATEGORY][$id]->destination_id;
}
/**
* Restore events
*/
function restore_events()
{
if ($this->course->has_resources(RESOURCE_EVENT))
{
$table = Database :: get_course_table(TABLE_AGENDA, $this->course->destination_db);
$resources = $this->course->resources;
foreach ($resources[RESOURCE_EVENT] as $id => $event)
{
$sql = "INSERT INTO ".$table." SET title = '".Database::escape_string($event->title)."', content = '".Database::escape_string($event->content)."', start_date = '".$event->start_date."', end_date = '".$event->end_date."'";
api_sql_query($sql, __FILE__, __LINE__);
$this->course->resources[RESOURCE_EVENT][$id]->destination_id = Database::get_last_insert_id();
}
}
}
/**
* Restore course-description
*/
function restore_course_descriptions()
{
if ($this->course->has_resources(RESOURCE_COURSEDESCRIPTION))
{
$table = Database :: get_course_table(TABLE_COURSE_DESCRIPTION, $this->course->destination_db);
$resources = $this->course->resources;
foreach ($resources[RESOURCE_COURSEDESCRIPTION] as $id => $cd)
{
$sql = "INSERT INTO ".$table." SET title = '".Database::escape_string($cd->title)."', content = '".Database::escape_string($cd->content)."'";
api_sql_query($sql, __FILE__, __LINE__);
$this->course->resources[RESOURCE_COURSEDESCRIPTION][$id]->destination_id = Database::get_last_insert_id();
}
}
}
/**
* Restore announcements
*/
function restore_announcements()
{
if ($this->course->has_resources(RESOURCE_ANNOUNCEMENT))
{
$table = Database :: get_course_table(TABLE_ANNOUNCEMENT, $this->course->destination_db);
$resources = $this->course->resources;
foreach ($resources[RESOURCE_ANNOUNCEMENT] as $id => $announcement)
{
$sql = "INSERT INTO ".$table." " .
"SET title = '".Database::escape_string($announcement->title)."'," .
"content = '".Database::escape_string($announcement->content)."', " .
"end_date = '".$announcement->date."', " .
"display_order = '".$announcement->display_order."', " .
"email_sent = '".$announcement->email_sent."'";
api_sql_query($sql, __FILE__, __LINE__);
$this->course->resources[RESOURCE_ANNOUNCEMENT][$id]->destination_id = Database::get_last_insert_id();
}
}
}
/**
* Restore Quiz
*/
function restore_quizzes()
{
if ($this->course->has_resources(RESOURCE_QUIZ))
{
$table_qui = Database :: get_course_table(TABLE_QUIZ_TEST, $this->course->destination_db);
$table_rel = Database :: get_course_table(TABLE_QUIZ_TEST_QUESTION, $this->course->destination_db);
$table_doc = Database :: get_course_table(TABLE_DOCUMENT, $this->course->destination_db);
$resources = $this->course->resources;
foreach ($resources[RESOURCE_QUIZ] as $id => $quiz)
{
$doc = '';
if (strlen($quiz->media) > 0)
{
if ($this->course->resources[RESOURCE_DOCUMENT][$quiz->media]->is_restored())
{
$sql = "SELECT path FROM ".$table_doc." WHERE id = ".$resources[RESOURCE_DOCUMENT][$quiz->media]->destination_id;
$doc = api_sql_query($sql, __FILE__, __LINE__);
$doc = Database::fetch_object($doc);
$doc = str_replace('/audio/', '', $doc->path);
}
}
$sql = "INSERT INTO ".$table_qui." SET title = '".Database::escape_string($quiz->title)."', description = '".Database::escape_string($quiz->description)."', type = '".$quiz->quiz_type."', random = '".$quiz->random."', active = '".$quiz->active."', sound = '".Database::escape_string($doc)."' ";
api_sql_query($sql, __FILE__, __LINE__);
$new_id = Database::get_last_insert_id();
$this->course->resources[RESOURCE_QUIZ][$id]->destination_id = $new_id;
foreach ($quiz->question_ids as $index => $question_id)
{
$qid = $this->restore_quiz_question($question_id);
$sql = "INSERT IGNORE INTO ".$table_rel." SET question_id = ".$qid.", exercice_id = ".$new_id."";
api_sql_query($sql, __FILE__, __LINE__);
}
}
}
}
/**
* Restore quiz-questions
*/
function restore_quiz_question($id)
{
$resources = $this->course->resources;
$question = $resources[RESOURCE_QUIZQUESTION][$id];
$new_id=0;
if(is_object($question))
{
if ($question->is_restored())
{
return $question->destination_id;
}
$table_que = Database :: get_course_table(TABLE_QUIZ_QUESTION, $this->course->destination_db);
$table_ans = Database :: get_course_table(TABLE_QUIZ_ANSWER, $this->course->destination_db);
$sql = "INSERT INTO ".$table_que." SET question = '".addslashes($question->question)."', description = '".addslashes($question->description)."', ponderation = '".addslashes($question->ponderation)."', position = '".addslashes($question->position)."', type='".addslashes($question->quiz_type)."', picture='".addslashes($question->picture)."'";
api_sql_query($sql, __FILE__, __LINE__);
$new_id = Database::get_last_insert_id();
foreach ($question->answers as $index => $answer)
{
$sql = "INSERT INTO ".$table_ans." SET id= '". ($index +1)."',question_id = '".$new_id."', answer = '".Database::escape_string($answer['answer'])."', correct = '".$answer['correct']."', comment = '".Database::escape_string($answer['comment'])."', ponderation='".$answer['ponderation']."', position = '".$answer['position']."', hotspot_coordinates = '".$answer['hotspot_coordinates']."', hotspot_type = '".$answer['hotspot_type']."'";
api_sql_query($sql, __FILE__, __LINE__);
}
$this->course->resources[RESOURCE_QUIZQUESTION][$id]->destination_id = $new_id;
}
return $new_id;
}
/**
* Restore Quiz
*/
function restore_surveys()
{
if ($this->course->has_resources(RESOURCE_SURVEY))
{
$table_sur = Database :: get_course_table(TABLE_SURVEY, $this->course->destination_db);
$table_que = Database :: get_course_table(TABLE_SURVEY_QUESTION, $this->course->destination_db);
$table_ans = Database :: get_course_table(TABLE_SURVEY_QUESTION_OPTION, $this->course->destination_db);
$resources = $this->course->resources;
foreach ($resources[RESOURCE_SURVEY] as $id => $survey)
{
$doc = '';
$sql = "INSERT INTO ".$table_sur." " .
"SET code = '".Database::escape_string($survey->code)."', " .
"title = '".Database::escape_string($survey->title)."', " .
"subtitle = '".Database::escape_string($survey->subtitle)."', " .
"author = '".Database::escape_string($survey->author)."', " .
"lang = '".Database::escape_string($survey->lang)."', " .
"avail_from = '".Database::escape_string($survey->avail_from)."', " .
"avail_till = '".Database::escape_string($survey->avail_till)."', " .
"is_shared = '".Database::escape_string($survey->is_shared)."', " .
"template = '".Database::escape_string($survey->template)."', " .
"intro = '".Database::escape_string($survey->intro)."', " .
"surveythanks = '".Database::escape_string($survey->surveythanks)."', " .
"creation_date = '".Database::escape_string($survey->creation_date)."', " .
"invited = '0', " .
"answered = '0', " .
"invite_mail = '".Database::escape_string($survey->invite_mail)."', " .
"reminder_mail = '".Database::escape_string($survey->reminder_mail)."'";
api_sql_query($sql, __FILE__, __LINE__);
$new_id = Database::get_last_insert_id();
$this->course->resources[RESOURCE_SURVEY][$id]->destination_id = $new_id;
foreach ($survey->question_ids as $index => $question_id)
{
$qid = $this->restore_survey_question($question_id);
$sql = "UPDATE ".$table_que." " .
"SET survey_id = ".$new_id." WHERE " .
"question_id = ".$qid."";
api_sql_query($sql, __FILE__, __LINE__);
$sql = "UPDATE ".$table_ans." ".
"SET survey_id = ".$new_id." WHERE " .
"question_id = ".$qid."";
api_sql_query($sql, __FILE__, __LINE__);
}
}
}
}
/**
* Restore survey-questions
*/
function restore_survey_question($id)
{
$resources = $this->course->resources;
$question = $resources[RESOURCE_SURVEYQUESTION][$id];
$new_id=0;
if(is_object($question))
{
if ($question->is_restored())
{
return $question->destination_id;
}
$table_que = Database :: get_course_table(TABLE_SURVEY_QUESTION, $this->course->destination_db);
$table_ans = Database :: get_course_table(TABLE_SURVEY_QUESTION_OPTION, $this->course->destination_db);
$sql = "INSERT INTO ".$table_que." " .
"SET survey_id = '".addslashes($question->survey_id)."', " .
"survey_question = '".addslashes($question->survey_question)."', " .
"survey_question_comment = '".addslashes($question->survey_question_comment)."', " .
"type = '".addslashes($question->survey_question_type)."', " .
"display = '".addslashes($question->display)."', " .
"sort = '".addslashes($question->sort)."', " .
"shared_question_id = '".addslashes($question->shared_question_id)."', " .
"max_value = '".addslashes($question->max_value)."' ";
api_sql_query($sql, __FILE__, __LINE__);
$new_id = Database::get_last_insert_id();
foreach ($question->answers as $index => $answer)
{
$sql = "INSERT INTO ".$table_ans." " .
"SET " .
"question_id = '".addslashes($new_id)."', " .
"option_text = '".addslashes($answer['option_text'])."', " .
"sort = '".addslashes($answer['sort'])."', " .
"survey_id = '".addslashes($question->survey_id)."'";
api_sql_query($sql, __FILE__, __LINE__);
}
$this->course->resources[RESOURCE_SURVEYQUESTION][$id]->destination_id = $new_id;
}
return $new_id;
}
/**
* Restore learnpaths
*/
function restore_learnpaths()
{
if ($this->course->has_resources(RESOURCE_LEARNPATH))
{
$table_main = Database :: get_course_table(TABLE_LP_MAIN, $this->course->destination_db);
$table_item = Database :: get_course_table(TABLE_LP_ITEM, $this->course->destination_db);
$table_tool = Database::get_course_table(TABLE_TOOL_LIST, $this->course->destination_db);
$resources = $this->course->resources;
$prereq_old = array ();
$item_old_id = array ();
foreach ($resources[RESOURCE_LEARNPATH] as $id => $lp)
{
$sql = "INSERT INTO ".$table_main." " .
"SET lp_type = '".$lp->lp_type."', " .
"name = '".Database::escape_string($lp->name)."', " .
"path = '".Database::escape_string($lp->path)."', " .
"ref = '".$lp->ref."', " .
"description = '".Database::escape_string($lp->description)."', " .
"content_local = '".Database::escape_string($lp->content_local)."', " .
"default_encoding = '".Database::escape_string($lp->default_encoding)."', " .
"default_view_mod = '".Database::escape_string($lp->default_view_mod)."', " .
"prevent_reinit = '".Database::escape_string($lp->prevent_reinit)."', " .
"force_commit = '".Database::escape_string($lp->force_commit)."', " .
"content_maker = '".Database::escape_string($lp->content_maker)."', " .
"display_order = '".Database::escape_string($lp->display_order)."', " .
"js_lib= '".Database::escape_string($lp->js_lib)."', " .
"content_license= '".Database::escape_string($lp->content_license)."', " .
"debug= '".Database::escape_string($lp->debug)."' ";
api_sql_query($sql, __FILE__, __LINE__);
$new_lp_id = Database::get_last_insert_id();
if($lp->visibility)
{
$sql = "INSERT INTO $table_tool SET name='".Database::escape_string($lp->name)."', link='newscorm/lp_controller.php?action=view&lp_id=$new_lp_id', image='scormbuilder.gif', visibility='1', admin='0', address='squaregrey.gif'";
api_sql_query($sql, __FILE__, __LINE__);
}
$new_item_ids = array();
$parent_item_ids = array();
$previous_item_ids = array();
$next_item_ids = array();
foreach ($lp->get_items() as $index => $item)
{
/*
if ($item['id'] != 0)
{
// Links in learnpath have types 'Link _self' or 'Link _blank'. We only need 'Link' here.
$type_parts = explode(' ',$item['type']);
$item['id'] = $this->course->resources[$type_parts[0]][$item['id']]->destination_id;
}
*/
//Get the new ref ID for all items that are not sco (dokeos quizzes, documents, etc)
$ref = '';
if(!empty($item['ref']) && $lp->lp_type!='2'){
$ref = $this->get_new_id($item['item_type'],$item['ref']);
}else{
$ref = $item['ref'];
}
//Dealing with path the same way as ref as some data has been put into path when it's a
//local resource
$path = Database::escape_string($item['path']);
if(strval(intval($path)) === $path)
{
$path = $this->get_new_id($item['item_type'],$path);
}
$sql = "INSERT INTO ".$table_item." SET " .
"lp_id = '".$new_lp_id."', " .
"item_type='".$item['item_type']."', " .
"ref = '".$ref."', " .
"title = '".Database::escape_string($item['title'])."', " .
"description ='".Database::escape_string($item['description'])."', " .
"path = '".$path."', " .
"min_score = '".$item['min_score']."', " .
"max_score = '".$item['max_score']."', " .
"mastery_score = '".$item['mastery_score']."', " .
"parent_item_id = '".$item['parent_item_id']."', " .
"previous_item_id = '".$item['previous_item_id']."', " .
"next_item_id = '".$item['next_item_id']."', " .
"display_order = '".$item['display_order']."', " .
"prerequisite = '".Database::escape_string($item['prerequisite'])."', " .
"parameters='".Database::escape_string($item['parameters'])."', " .
"launch_data = '".Database::escape_string($item['launch_dataprereq_type'])."'";
api_sql_query($sql, __FILE__, __LINE__);
$new_item_id = Database::get_last_insert_id();
//save a link between old and new item IDs
$new_item_ids[$item['id']] = $new_item_id;
//save a reference of items that need a parent_item_id refresh
$parent_item_ids[$new_item_id] = $item['parent_item_id'];
//save a reference of items that need a previous_item_id refresh
$previous_item_ids[$new_item_id] = $item['previous_item_id'];
//save a reference of items that need a next_item_id refresh
$next_item_ids[$new_item_id] = $item['next_item_id'];
}
foreach ($parent_item_ids as $new_item_id => $parent_item_old_id)
{
$parent_new_id = 0;
if($parent_item_old_id != 0){
$parent_new_id = $new_item_ids[$parent_item_old_id];
}
$sql = "UPDATE ".$table_item." SET parent_item_id = '".$parent_new_id."' WHERE id = '".$new_item_id."'";
api_sql_query($sql, __FILE__, __LINE__);
}
foreach ($previous_item_ids as $new_item_id => $previous_item_old_id)
{
$previous_new_id = 0;
if($previous_item_old_id != 0){
$previous_new_id = $new_item_ids[$previous_item_old_id];
}
$sql = "UPDATE ".$table_item." SET previous_item_id = '".$previous_new_id."' WHERE id = '".$new_item_id."'";
api_sql_query($sql, __FILE__, __LINE__);
}
foreach ($next_item_ids as $new_item_id => $next_item_old_id)
{
$next_new_id = 0;
if($next_item_old_id != 0){
$next_new_id = $new_item_ids[$next_item_old_id];
}
$sql = "UPDATE ".$table_item." SET next_item_id = '".$next_new_id."' WHERE id = '".$new_item_id."'";
api_sql_query($sql, __FILE__, __LINE__);
}
$this->course->resources[RESOURCE_LEARNPATH][$id]->destination_id = $new_lp_id;
}
}
}
/**
* Gets the new ID of one specific tool item from the tool name and the old ID
* @param string Tool name
* @param integer Old ID
* @return integer New ID
*/
function get_new_id($tool,$ref)
{
//transform $tool into one backup/restore constant
if($tool == 'hotpotatoes'){$tool = 'document';}
if(!empty($this->course->resources[$tool][$ref]->destination_id)){
return $this->course->resources[$tool][$ref]->destination_id;
}
return '';
}
}
?>

Source for file CourseRestorer.class.php