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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/>.
/**
* This file is used to manage repositories
*
* @since Moodle 2.0
* @package core
* @subpackage repository
* @copyright 2009 Dongsheng Cai <dongsheng@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once(__DIR__ . '/../config.php');
require_once($CFG->dirroot . '/repository/lib.php');
$edit = optional_param('edit', 0, PARAM_INT);
$new = optional_param('new', '', PARAM_ALPHANUMEXT);
$delete = optional_param('delete', 0, PARAM_INT);
$sure = optional_param('sure', '', PARAM_ALPHA);
$contextid = optional_param('contextid', 0, PARAM_INT);
$usercourseid = optional_param('usercourseid', SITEID, PARAM_INT); // Extra: used for user context only
$url = new moodle_url('/repository/manage_instances.php');
$baseurl = new moodle_url('/repository/manage_instances.php');
$baseurl->param('sesskey', sesskey());
if ($edit){
$url->param('edit', $edit);
$pagename = 'repositoryinstanceedit';
} else if ($delete) {
$url->param('delete', $delete);
$pagename = 'repositorydelete';
} else if ($new) {
$url->param('new', $new);
$pagename = 'repositoryinstancenew';
} else {
$pagename = 'repositorylist';
}
if ($sure !== '') {
$url->param('sure', $sure);
}
if ($contextid !== 0) {
$url->param('contextid', $contextid);
$baseurl->param('contextid', $contextid);
}
if ($usercourseid != SITEID) {
$url->param('usercourseid', $usercourseid);
}
$context = context::instance_by_id($contextid);
$PAGE->set_url($url);
$PAGE->set_context($context);
$PAGE->set_pagelayout('standard');
/// Security: make sure we're allowed to do this operation
if ($context->contextlevel == CONTEXT_COURSE) {
$pagename = get_string("repositorycourse",'repository');
if ( !$course = $DB->get_record('course', array('id'=>$context->instanceid))) {
print_error('invalidcourseid');
}
require_login($course, false);
// If the user is allowed to edit this course, he's allowed to edit list of repository instances
require_capability('moodle/course:update', $context);
} else if ($context->contextlevel == CONTEXT_USER) {
require_login();
$pagename = get_string('manageinstances', 'repository');
//is the user looking at its own repository instances
if ($USER->id != $context->instanceid){
print_error('notyourinstances', 'repository');
}
$user = $USER;
} else {
print_error('invalidcontext');
}
/// Security: we cannot perform any action if the type is not visible or if the context has been disabled
if (!empty($new) && empty($edit)){
$type = repository::get_type_by_typename($new);
} else if (!empty($edit)){
$instance = repository::get_repository_by_id($edit, $context->id);
$type = repository::get_type_by_id($instance->options['typeid']);
} else if (!empty($delete)){
$instance = repository::get_repository_by_id($delete, $context->id);
$type = repository::get_type_by_id($instance->options['typeid']);
}
if (isset($type)) {
if (!$type->get_visible()) {
print_error('typenotvisible', 'repository', $baseurl);
}
// Prevents the user from creating/editing an instance if the repository is not visible in
// this context OR if the user does not have the capability to view this repository in this context.
$canviewrepository = has_capability('repository/'.$type->get_typename().':view', $context);
if (!$type->get_contextvisibility($context) || !$canviewrepository) {
print_error('usercontextrepositorydisabled', 'repository', $baseurl);
}
}
// We have an instance when we are going to edit, or delete. Several checks need to be done!
if (!empty($instance)) {
// The context passed MUST match the context of the repository. And as both have to be
// similar, this also ensures that the context is either a user one, or a course one.
if ($instance->instance->contextid != $context->id) {
print_error('invalidcontext');
}
if ($instance->readonly) {
// Cannot edit, or delete a readonly instance.
throw new repository_exception('readonlyinstance', 'repository');
} else if (!$instance->can_be_edited_by_user()) {
// The user has to have the right to edit the instance.
throw new repository_exception('nopermissiontoaccess', 'repository');
}
}
// Create navigation links.
if (!empty($course)) {
$pageheading = $course->fullname;
} else {
$pageheading = $pagename;
}
// Display page header.
$PAGE->set_title($pagename);
$PAGE->set_heading($pageheading);
$return = true;
if (!empty($edit) || !empty($new)) {
if (!empty($edit)) {
$instancetype = repository::get_type_by_id($instance->options['typeid']);
$classname = 'repository_' . $instancetype->get_typename();
$configs = $instance->get_instance_option_names();
$plugin = $instancetype->get_typename();
$typeid = $instance->options['typeid'];
} else {
$plugin = $new;
$typeid = $new;
$instance = null;
}
/// Create edit form for this instance
$mform = new repository_instance_form('', array('plugin' => $plugin, 'typeid' => $typeid,'instance' => $instance, 'contextid' => $contextid));
/// Process the form data if any, or display
if ($mform->is_cancelled()){
redirect($baseurl);
exit;
} else if ($fromform = $mform->get_data()){
if (!confirm_sesskey()) {
print_error('confirmsesskeybad', '', $baseurl);
}
if ($edit) {
$settings = array();
$settings['name'] = $fromform->name;
foreach($configs as $config) {
$settings[$config] = isset($fromform->$config) ? $fromform->$config : null;
}
$success = $instance->set_option($settings);
} else {
$success = repository::static_function($plugin, 'create', $plugin, 0, context::instance_by_id($contextid), $fromform);
$data = data_submitted();
}
if ($success) {
$savedstr = get_string('configsaved', 'repository');
redirect($baseurl);
} else {
print_error('instancenotsaved', 'repository', $baseurl);
}
exit;
} else { // Display the form
echo $OUTPUT->header();
echo $OUTPUT->heading(get_string('configplugin', 'repository_'.$plugin));
$OUTPUT->box_start();
$mform->display();
$OUTPUT->box_end();
$return = false;
}
} else if (!empty($delete)) {
if ($sure) {
if (!confirm_sesskey()) {
print_error('confirmsesskeybad', '', $baseurl);
}
if ($instance->delete()) {
$deletedstr = get_string('instancedeleted', 'repository');
redirect($baseurl, $deletedstr, 3);
} else {
print_error('instancenotdeleted', 'repository', $baseurl);
}
exit;
}
echo $OUTPUT->header();
$formcontinue = new single_button(new moodle_url($baseurl, array('delete' => $delete, 'sure' => 'yes')), get_string('yes'));
$formcancel = new single_button($baseurl, get_string('no'));
echo $OUTPUT->confirm(get_string('confirmdelete', 'repository', $instance->name), $formcontinue, $formcancel);
$return = false;
} else {
echo $OUTPUT->header();
repository::display_instances_list($context);
$return = false;
}
if (!empty($return)) {
redirect($baseurl);
}
echo $OUTPUT->footer();