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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Defines backup_course_task
*
* @package core_backup
* @subpackage moodle2
* @category backup
* @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
/**
* course task that provides all the properties and common steps to be performed
* when one course is being backup
*
* TODO: Finish phpdocs
*/
class backup_course_task extends backup_task {
protected $courseid;
protected $contextid;
/**
* Constructor - instantiates one object of this class
*/
public function __construct($name, $courseid, $plan = null) {
$this->courseid = $courseid;
$this->contextid = context_course::instance($this->courseid)->id;
parent::__construct($name, $plan);
}
public function get_contextid() {
return $this->contextid;
}
/**
* Course tasks have their own directory to write files
*/
public function get_taskbasepath() {
return $this->get_basepath() . '/course';
}
/**
* Create all the steps that will be part of this task
*/
public function build() {
// Add some extra settings that related processors are going to need
$this->add_setting(new backup_activity_generic_setting(backup::VAR_COURSEID, base_setting::IS_INTEGER, $this->get_courseid()));
$this->add_setting(new backup_activity_generic_setting(backup::VAR_CONTEXTID, base_setting::IS_INTEGER, $this->contextid));
// Create the course directory
$this->add_step(new create_taskbasepath_directory('create_course_directory'));
// Create the course.xml file with course & category information
// annotating some bits, tags and module restrictions
$this->add_step(new backup_course_structure_step('course_info', 'course.xml'));
// Generate the enrolment file (conditionally, prevent it in any IMPORT/HUB operation)
if ($this->plan->get_mode() != backup::MODE_IMPORT && $this->plan->get_mode() != backup::MODE_HUB) {
$this->add_step(new backup_enrolments_structure_step('course_enrolments', 'enrolments.xml'));
}
// Annotate enrolment custom fields.
$this->add_step(new backup_enrolments_execution_step('annotate_enrol_custom_fields'));
// Annotate all the groups and groupings belonging to the course. This can be optional.
if ($this->get_setting_value('groups')) {
$this->add_step(new backup_annotate_course_groups_and_groupings('annotate_course_groups'));
}
// Annotate the groups used in already annotated groupings (note this may be
// unnecessary now that we are annotating all the course groups and groupings in the
// step above). This is here to support course->defaultgroupingid.
// This may not be required to annotate if groups are not being backed up.
if ($this->get_setting_value('groups')) {
$this->add_step(new backup_annotate_groups_from_groupings('annotate_groups_from_groupings'));
}
// Annotate the question_categories belonging to the course context (conditionally).
if ($this->get_setting_value('questionbank')) {
$this->add_step(new backup_calculate_question_categories('course_question_categories'));
}
// Generate the roles file (optionally role assignments and always role overrides)
$this->add_step(new backup_roles_structure_step('course_roles', 'roles.xml'));
// Generate the filter file (conditionally)
if ($this->get_setting_value('filters')) {
$this->add_step(new backup_filters_structure_step('course_filters', 'filters.xml'));
}
// Generate the comments file (conditionally)
if ($this->get_setting_value('comments')) {
$this->add_step(new backup_comments_structure_step('course_comments', 'comments.xml'));
}
// Generate the calender events file (conditionally)
if ($this->get_setting_value('calendarevents')) {
$this->add_step(new backup_calendarevents_structure_step('course_calendar', 'calendar.xml'));
}
// Generate the logs file (conditionally)
if ($this->get_setting_value('logs')) {
// Legacy logs.
$this->add_step(new backup_course_logs_structure_step('course_logs', 'logs.xml'));
// New log stores.
$this->add_step(new backup_course_logstores_structure_step('course_logstores', 'logstores.xml'));
}
// Generate the course competencies.
$this->add_step(new backup_course_competencies_structure_step('course_competencies', 'competencies.xml'));
// Annotate activity completion defaults.
$this->add_step(new backup_completion_defaults_structure_step('course_completion_defaults', 'completiondefaults.xml'));
// Generate the inforef file (must be after ALL steps gathering annotations of ANY type)
$this->add_step(new backup_inforef_structure_step('course', 'inforef.xml'));
// Migrate the already exported inforef entries to final ones
$this->add_step(new move_inforef_annotations_to_final('migrate_inforef'));
// At the end, mark it as built
$this->built = true;
}
/**
* Code the transformations to perform in the course in
* order to get transportable (encoded) links
* @param string $content content in which to encode links.
* @return string content with links encoded.
*/
static public function encode_content_links($content) {
// Link to the course main page (it also covers "&topic=xx" and "&week=xx"
// because they don't become transformed (section number) in backup/restore.
$content = self::encode_links_helper($content, 'COURSEVIEWBYID', '/course/view.php?id=');
// A few other key course links.
$content = self::encode_links_helper($content, 'GRADEINDEXBYID', '/grade/index.php?id=');
$content = self::encode_links_helper($content, 'GRADEREPORTINDEXBYID', '/grade/report/index.php?id=');
$content = self::encode_links_helper($content, 'BADGESVIEWBYID', '/badges/view.php?type=2&id=');
$content = self::encode_links_helper($content, 'USERINDEXVIEWBYID', '/user/index.php?id=');
return $content;
}
/**
* Helper method, used by encode_content_links.
* @param string $content content in which to encode links.
* @param string $name the name of this type of encoded link.
* @param string $path the path that identifies this type of link, up
* to the ?paramname= bit.
* @return string content with one type of link encoded.
*/
static private function encode_links_helper($content, $name, $path) {
global $CFG;
// We want to convert both http and https links.
$root = $CFG->wwwroot;
$httpsroot = str_replace('http://', 'https://', $root);
$httproot = str_replace('https://', 'http://', $root);
$httpsbase = preg_quote($httpsroot . $path, '/');
$httpbase = preg_quote($httproot . $path, '/');
$return = preg_replace('/(' . $httpsbase . ')([0-9]+)/', '$@' . $name . '*$2@$', $content);
$return = preg_replace('/(' . $httpbase . ')([0-9]+)/', '$@' . $name . '*$2@$', $return);
return $return;
}
// Protected API starts here
/**
* Define the common setting that any backup section will have
*/
protected function define_settings() {
// Nothing to add, sections doesn't have common settings (for now)
}
}