<?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/>.

/**
 * Allows the user to manage calendar subscriptions.
 *
 * @copyright 2012 Jonathan Harker
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @package calendar
 */

require_once('../config.php');
require_once($CFG->libdir.'/bennu/bennu.inc.php');
require_once($CFG->dirroot.'/course/lib.php');
require_once($CFG->dirroot.'/calendar/lib.php');

// Required use.
$courseid = optional_param('course', null, PARAM_INT);
$categoryid = optional_param('category', null, PARAM_INT);

< // Used for processing subscription actions.
< $subscriptionid = optional_param('id', 0, PARAM_INT);
< $pollinterval  = optional_param('pollinterval', 0, PARAM_INT);
< $groupcourseid  = optional_param('groupcourseid', 0, PARAM_INT);
< $action = optional_param('action', '', PARAM_INT);



$url = new moodle_url('/calendar/managesubscriptions.php');

< if ($courseid != SITEID) {



> if ($courseid != SITEID && !empty($courseid)) {


    $url->param('course', $courseid);

< }
< if ($categoryid) {



>     navigation_node::override_active_url(new moodle_url('/course/view.php', ['id' => $courseid]));
>     $PAGE->navbar->add(
>         get_string('calendar', 'calendar'),
>         new moodle_url('/calendar/view.php', ['view' => 'month', 'course' => $courseid])
>     );
> } else if ($categoryid) {


    $url->param('categoryid', $categoryid);

>     navigation_node::override_active_url(new moodle_url('/course/index.php', ['categoryid' => $categoryid]));
}
>     $PAGE->set_category_by_id($categoryid);
navigation_node::override_active_url(new moodle_url('/calendar/view.php', array('view' => 'month')));
>     $PAGE->navbar->add(
$PAGE->set_url($url);
>         get_string('calendar', 'calendar'),
$PAGE->set_pagelayout('admin');
>         new moodle_url('/calendar/view.php', ['view' => 'month', 'category' => $categoryid])
$PAGE->navbar->add(get_string('managesubscriptions', 'calendar'));
>     );

> } else {
if ($courseid != SITEID && !empty($courseid)) {
>     $PAGE->navbar->add(get_string('calendar', 'calendar'), new moodle_url('/calendar/view.php', ['view' => 'month']));



< navigation_node::override_active_url(new moodle_url('/calendar/view.php', array('view' => 'month')));



> 



< $PAGE->navbar->add(get_string('managesubscriptions', 'calendar'));



> $PAGE->set_secondary_navigation(false);


    $courses = array($course->id => $course);
} else {
    $course = get_site();
    $courses = calendar_get_default_courses();
}
require_login($course, false);

if (!calendar_user_can_add_event($course)) {

<     print_error('errorcannotimport', 'calendar');
< }
< 
< // Populate the 'group' select box based on the given 'groupcourseid', if necessary.
< $groups = [];
< if (!empty($groupcourseid)) {
<     require_once($CFG->libdir . '/grouplib.php');
<     $groupcoursedata = groups_get_course_data($groupcourseid);
<     if (!empty($groupcoursedata->groups)) {
<         foreach ($groupcoursedata->groups as $groupid => $groupdata) {
<             $groups[$groupid] = $groupdata->name;
<         }
<     }
< }
< $customdata = [
<     'courseid' => $course->id,
<     'groups' => $groups,
< ];
< $form = new \core_calendar\local\event\forms\managesubscriptions(null, $customdata);
< $form->set_data(array(
<     'course' => $course->id
< ));
< 
< $importresults = '';
< 
< $formdata = $form->get_data();
< if (!empty($formdata)) {
<     require_sesskey(); // Must have sesskey for all actions.
<     $subscriptionid = calendar_add_subscription($formdata);
<     if ($formdata->importfrom == CALENDAR_IMPORT_FROM_FILE) {
<         // Blank the URL if it's a file import.
<         $formdata->url = '';
<         $calendar = $form->get_file_content('importfile');
<         $ical = new iCalendar();
<         $ical->unserialize($calendar);
<         $importresults = calendar_import_icalendar_events($ical, null, $subscriptionid);
<     } else {
<         try {
<             $importresults = calendar_update_subscription_events($subscriptionid);
<         } catch (moodle_exception $e) {
<             // Delete newly added subscription and show invalid url error.
<             calendar_delete_subscription($subscriptionid);
<             print_error($e->errorcode, $e->module, $PAGE->url);
<         }
<     }
<     // Redirect to prevent refresh issues.
<     redirect($PAGE->url, $importresults);
< } else if (!empty($subscriptionid)) {
<     // The user is wanting to perform an action upon an existing subscription.
<     require_sesskey(); // Must have sesskey for all actions.
<     if (calendar_can_edit_subscription($subscriptionid)) {
<         try {
<             $importresults = calendar_process_subscription_row($subscriptionid, $pollinterval, $action);
<         } catch (moodle_exception $e) {
<             // If exception caught, then user should be redirected to page where he/she came from.
<             print_error($e->errorcode, $e->module, $PAGE->url);
<         }
<     } else {
<         print_error('nopermissions', 'error', $PAGE->url, get_string('managesubscriptions', 'calendar'));
<     }



>     throw new \moodle_exception('errorcannotimport', 'calendar');


}

> $PAGE->navbar->add(get_string('managesubscriptions', 'calendar'), $PAGE->url);



$types = calendar_get_allowed_event_types($courseid);

$searches = [];
$params = [];

$usedefaultfilters = true;

if (!empty($types['site'])) {
    $searches[] = "(eventtype = 'site')";
    $usedefaultfilters = false;
}

if (!empty($types['user'])) {
    $searches[] = "(eventtype = 'user' AND userid = :userid)";
    $params['userid'] = $USER->id;
    $usedefaultfilters = false;
}

if (!empty($courseid) && !empty($types['course'])) {
    $searches[] = "((eventtype = 'course' OR eventtype = 'group') AND courseid = :courseid)";
    $params += ['courseid' => $courseid];
    $usedefaultfilters = false;
}

if (!empty($types['category'])) {
    if (!empty($categoryid)) {
        $searches[] = "(eventtype = 'category' AND categoryid = :categoryid)";
        $params += ['categoryid' => $categoryid];
    } else {
        $searches[] = "(eventtype = 'category')";
    }

    $usedefaultfilters = false;
}

if ($usedefaultfilters) {
    $searches[] = "(eventtype = 'user' AND userid = :userid)";
    $params['userid'] = $USER->id;

    if (!empty($types['site'])) {
        $searches[] = "(eventtype = 'site' AND courseid  = :siteid)";
        $params += ['siteid' => SITEID];
    }

    if (!empty($types['course'])) {
        $courses = calendar_get_default_courses(null, 'id', true);
        if (!empty($courses)) {
            $courseids = array_map(function ($c) {
                return $c->id;
            }, $courses);

            list($courseinsql, $courseparams) = $DB->get_in_or_equal($courseids, SQL_PARAMS_NAMED, 'course');
            $searches[] = "((eventtype = 'course' OR eventtype = 'group') AND courseid {$courseinsql})";
            $params += $courseparams;
        }
    }

    if (!empty($types['category'])) {
        list($categoryinsql, $categoryparams) = $DB->get_in_or_equal(
                array_keys(\core_course_category::make_categories_list('moodle/category:manage')), SQL_PARAMS_NAMED, 'category');
        $searches[] = "(eventtype = 'category' AND categoryid {$categoryinsql})";
        $params += $categoryparams;
    }
}

$sql = "SELECT * FROM {event_subscriptions} WHERE " . implode(' OR ', $searches);;
$subscriptions = $DB->get_records_sql($sql, $params);

// Print title and header.
$PAGE->set_title("$course->shortname: ".get_string('calendar', 'calendar').": ".get_string('subscriptions', 'calendar'));

< $PAGE->set_heading($course->fullname);



> $heading = get_string('calendar', 'core_calendar');
> $heading = ($courseid != SITEID && !empty($courseid)) ? "{$heading}: {$COURSE->shortname}" : $heading;
> $PAGE->set_heading($heading);



$renderer = $PAGE->get_renderer('core_calendar');

echo $OUTPUT->header();

> echo $renderer->render_subscriptions_header();



// Filter subscriptions which user can't edit.
foreach($subscriptions as $subscription) {
    if (!calendar_can_edit_subscription($subscription)) {
        unset($subscriptions[$subscription->id]);
    }
}

// Display a table of subscriptions.

< echo $renderer->subscription_details($courseid, $subscriptions, $importresults);
< // Display the add subscription form.
< $form->display();



> if (empty($subscription)) {
>     echo $renderer->render_no_calendar_subscriptions();
> } else {
>     echo $renderer->subscription_details($courseid, $subscriptions);
> }


echo $OUTPUT->footer();