d32e1e27c58d6c2e9d12a9a2213c5f24112cdfa3
[moodle.git] / backup / moodle2 / restore_course_task.class.php
1 <?php
3 // This file is part of Moodle - http://moodle.org/
4 //
5 // Moodle is free software: you can redistribute it and/or modify
6 // it under the terms of the GNU General Public License as published by
7 // the Free Software Foundation, either version 3 of the License, or
8 // (at your option) any later version.
9 //
10 // Moodle is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 // GNU General Public License for more details.
14 //
15 // You should have received a copy of the GNU General Public License
16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
18 /**
19  * Defines restore_course_task class
20  *
21  * @package     core_backup
22  * @subpackage  moodle2
23  * @category    backup
24  * @copyright   2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
25  * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
26  */
28 defined('MOODLE_INTERNAL') || die();
30 /**
31  * course task that provides all the properties and common steps to be performed
32  * when one course is being restored
33  *
34  * TODO: Finish phpdocs
35  */
36 class restore_course_task extends restore_task {
38     protected $info; // info related to course gathered from backup file
39     protected $contextid; // course context id
41     /**
42      * Constructor - instantiates one object of this class
43      */
44     public function __construct($name, $info, $plan = null) {
45         $this->info = $info;
46         parent::__construct($name, $plan);
47     }
49     /**
50      * Course tasks have their own directory to read files
51      */
52     public function get_taskbasepath() {
54         return $this->get_basepath() . '/course';
55     }
57     public function get_contextid() {
58         return $this->contextid;
59     }
61     /**
62      * Create all the steps that will be part of this task
63      */
64     public function build() {
66         // Define the task contextid (the course one)
67         $this->contextid = context_course::instance($this->get_courseid())->id;
69         // Executed conditionally if restoring to new course or if overwrite_conf setting is enabled
70         if ($this->get_target() == backup::TARGET_NEW_COURSE || $this->get_setting_value('overwrite_conf') == true) {
71             $this->add_step(new restore_course_structure_step('course_info', 'course.xml'));
72         }
74         $this->add_step(new restore_course_legacy_files_step('legacy_files'));
76         // Deal with enrolment methods and user enrolments.
77         if ($this->plan->get_mode() == backup::MODE_IMPORT) {
78             // No need to do anything with enrolments.
80         } else if (!$this->get_setting_value('users') or $this->plan->get_mode() == backup::MODE_HUB) {
81             if ($this->get_target() == backup::TARGET_CURRENT_ADDING or $this->get_target() == backup::TARGET_EXISTING_ADDING) {
82                 // Keep current enrolments unchanged.
83             } else {
84                 // If no instances yet add default enrol methods the same way as when creating new course in UI.
85                 $this->add_step(new restore_default_enrolments_step('default_enrolments'));
86             }
88         } else {
89             // Restore course enrolment data.
90             $this->add_step(new restore_enrolments_structure_step('course_enrolments', 'enrolments.xml'));
91         }
93         // Populate groups, this must be done after enrolments because only enrolled users may be in groups.
94         $this->add_step(new restore_groups_members_structure_step('create_groups_members', '../groups.xml'));
96         // Restore course role assignments and overrides (internally will observe the role_assignments setting),
97         // this must be done after all users are enrolled.
98         $this->add_step(new restore_ras_and_caps_structure_step('course_ras_and_caps', 'roles.xml'));
100         // Restore course filters (conditionally)
101         if ($this->get_setting_value('filters')) {
102             $this->add_step(new restore_filters_structure_step('course_filters', 'filters.xml'));
103         }
105         // Restore course comments (conditionally)
106         if ($this->get_setting_value('comments')) {
107             $this->add_step(new restore_comments_structure_step('course_comments', 'comments.xml'));
108         }
110         // Calendar events (conditionally)
111         if ($this->get_setting_value('calendarevents')) {
112             $this->add_step(new restore_calendarevents_structure_step('course_calendar', 'calendar.xml'));
113         }
115         // At the end, mark it as built
116         $this->built = true;
117     }
119     /**
120      * Define the contents in the course that must be
121      * processed by the link decoder
122      */
123     static public function define_decode_contents() {
124         $contents = array();
126         $contents[] = new restore_decode_content('course', 'summary');
127         $contents[] = new restore_decode_content('event', 'description');
129         return $contents;
130     }
132     /**
133      * Define the decoding rules for links belonging
134      * to the course to be executed by the link decoder
135      */
136     static public function define_decode_rules() {
137         $rules = array();
139         // Link to the course main page (it also covers "&topic=xx" and "&week=xx"
140         // because they don't become transformed (section number) in backup/restore.
141         $rules[] = new restore_decode_rule('COURSEVIEWBYID',       '/course/view.php?id=$1',        'course');
143         // A few other key course links.
144         $rules[] = new restore_decode_rule('GRADEINDEXBYID',       '/grade/index.php?id=$1',        'course');
145         $rules[] = new restore_decode_rule('GRADEREPORTINDEXBYID', '/grade/report/index.php?id=$1', 'course');
146         $rules[] = new restore_decode_rule('BADGESVIEWBYID',       '/badges/view.php?type=2&id=$1', 'course');
147         $rules[] = new restore_decode_rule('USERINDEXVIEWBYID',    '/user/index.php?id=$1',         'course');
149         return $rules;
150     }
152 // Protected API starts here
154     /**
155      * Define the common setting that any restore course will have
156      */
157     protected function define_settings() {
159         //$name, $vtype, $value = null, $visibility = self::VISIBLE, $status = self::NOT_LOCKED
160         $fullname = new restore_course_generic_text_setting('course_fullname', base_setting::IS_TEXT, $this->get_info()->original_course_fullname);
161         $fullname->get_ui()->set_label(get_string('setting_course_fullname', 'backup'));
162         $this->add_setting($fullname);
164         $shortname = new restore_course_generic_text_setting('course_shortname', base_setting::IS_TEXT, $this->get_info()->original_course_shortname);
165         $shortname->get_ui()->set_label(get_string('setting_course_shortname', 'backup'));
166         $this->add_setting($shortname);
168         $startdate = new restore_course_generic_text_setting('course_startdate', base_setting::IS_INTEGER, $this->get_info()->original_course_startdate);
169         $startdate->set_ui(new backup_setting_ui_dateselector($startdate, get_string('setting_course_startdate', 'backup')));
170         $this->add_setting($startdate);
172         $keep_enrols = new restore_course_generic_setting('keep_roles_and_enrolments', base_setting::IS_BOOLEAN, false);
173         $keep_enrols->set_ui(new backup_setting_ui_select($keep_enrols, $keep_enrols->get_name(), array(1=>get_string('yes'), 0=>get_string('no'))));
174         $keep_enrols->get_ui()->set_label(get_string('setting_keep_roles_and_enrolments', 'backup'));
175         if ($this->get_target() != backup::TARGET_CURRENT_DELETING and $this->get_target() != backup::TARGET_EXISTING_DELETING) {
176             $keep_enrols->set_value(false);
177             $keep_enrols->set_status(backup_setting::LOCKED_BY_CONFIG);
178             $keep_enrols->set_visibility(backup_setting::HIDDEN);
179         }
180         $this->add_setting($keep_enrols);
182         $keep_groups = new restore_course_generic_setting('keep_groups_and_groupings', base_setting::IS_BOOLEAN, false);
183         $keep_groups->set_ui(new backup_setting_ui_select($keep_groups, $keep_groups->get_name(), array(1=>get_string('yes'), 0=>get_string('no'))));
184         $keep_groups->get_ui()->set_label(get_string('setting_keep_groups_and_groupings', 'backup'));
185         if ($this->get_target() != backup::TARGET_CURRENT_DELETING and $this->get_target() != backup::TARGET_EXISTING_DELETING) {
186             $keep_groups->set_value(false);
187             $keep_groups->set_status(backup_setting::LOCKED_BY_CONFIG);
188             $keep_groups->set_visibility(backup_setting::HIDDEN);
189         }
190         $this->add_setting($keep_groups);
192         // Define overwrite_conf to decide if course configuration will be restored over existing one
193         $overwrite = new restore_course_overwrite_conf_setting('overwrite_conf', base_setting::IS_BOOLEAN, false);
194         $overwrite->set_ui(new backup_setting_ui_select($overwrite, $overwrite->get_name(), array(1=>get_string('yes'), 0=>get_string('no'))));
195         $overwrite->get_ui()->set_label(get_string('setting_overwriteconf', 'backup'));
196         if ($this->get_target() == backup::TARGET_NEW_COURSE) {
197             $overwrite->set_value(true);
198             $overwrite->set_status(backup_setting::LOCKED_BY_CONFIG);
199             $overwrite->set_visibility(backup_setting::HIDDEN);
200         }
201         $this->add_setting($overwrite);
203     }