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   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Allows the user to manage calendar subscriptions.
  19   *
  20   * @copyright 2012 Jonathan Harker
  21   * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  22   * @package calendar
  23   */
  24  
  25  require_once('../config.php');
  26  require_once($CFG->libdir.'/bennu/bennu.inc.php');
  27  require_once($CFG->dirroot.'/course/lib.php');
  28  require_once($CFG->dirroot.'/calendar/lib.php');
  29  require_once($CFG->dirroot.'/calendar/managesubscriptions_form.php');
  30  
  31  // Required use.
  32  $courseid = optional_param('course', SITEID, PARAM_INT);
  33  // Used for processing subscription actions.
  34  $subscriptionid = optional_param('id', 0, PARAM_INT);
  35  $pollinterval  = optional_param('pollinterval', 0, PARAM_INT);
  36  $action = optional_param('action', '', PARAM_INT);
  37  
  38  $url = new moodle_url('/calendar/managesubscriptions.php');
  39  if ($courseid != SITEID) {
  40      $url->param('course', $courseid);
  41  }
  42  navigation_node::override_active_url(new moodle_url('/calendar/view.php', array('view' => 'month')));
  43  $PAGE->set_url($url);
  44  $PAGE->set_pagelayout('admin');
  45  $PAGE->navbar->add(get_string('managesubscriptions', 'calendar'));
  46  
  47  if ($courseid != SITEID && !empty($courseid)) {
  48      $course = $DB->get_record('course', array('id' => $courseid));
  49      $courses = array($course->id => $course);
  50  } else {
  51      $course = get_site();
  52      $courses = calendar_get_default_courses();
  53  }
  54  require_course_login($course);
  55  if (!calendar_user_can_add_event($course)) {
  56      print_error('errorcannotimport', 'calendar');
  57  }
  58  
  59  $form = new calendar_addsubscription_form(null);
  60  $form->set_data(array(
  61      'course' => $course->id
  62  ));
  63  
  64  $importresults = '';
  65  
  66  $formdata = $form->get_data();
  67  if (!empty($formdata)) {
  68      require_sesskey(); // Must have sesskey for all actions.
  69      $subscriptionid = calendar_add_subscription($formdata);
  70      if ($formdata->importfrom == CALENDAR_IMPORT_FROM_FILE) {
  71          // Blank the URL if it's a file import.
  72          $formdata->url = '';
  73          $calendar = $form->get_file_content('importfile');
  74          $ical = new iCalendar();
  75          $ical->unserialize($calendar);
  76          $importresults = calendar_import_icalendar_events($ical, $courseid, $subscriptionid);
  77      } else {
  78          try {
  79              $importresults = calendar_update_subscription_events($subscriptionid);
  80          } catch (moodle_exception $e) {
  81              // Delete newly added subscription and show invalid url error.
  82              calendar_delete_subscription($subscriptionid);
  83              print_error($e->errorcode, $e->module, $PAGE->url);
  84          }
  85      }
  86      // Redirect to prevent refresh issues.
  87      redirect($PAGE->url, $importresults);
  88  } else if (!empty($subscriptionid)) {
  89      // The user is wanting to perform an action upon an existing subscription.
  90      require_sesskey(); // Must have sesskey for all actions.
  91      if (calendar_can_edit_subscription($subscriptionid)) {
  92          try {
  93              $importresults = calendar_process_subscription_row($subscriptionid, $pollinterval, $action);
  94          } catch (moodle_exception $e) {
  95              // If exception caught, then user should be redirected to page where he/she came from.
  96              print_error($e->errorcode, $e->module, $PAGE->url);
  97          }
  98      } else {
  99          print_error('nopermissions', 'error', $PAGE->url, get_string('managesubscriptions', 'calendar'));
 100      }
 101  }
 102  
 103  $sql = 'SELECT *
 104            FROM {event_subscriptions}
 105           WHERE courseid = :courseid
 106              OR (courseid = 0 AND userid = :userid)';
 107  $params = array('courseid' => $courseid, 'userid' => $USER->id);
 108  $subscriptions = $DB->get_records_sql($sql, $params);
 109  
 110  // Print title and header.
 111  $PAGE->set_title("$course->shortname: ".get_string('calendar', 'calendar').": ".get_string('subscriptions', 'calendar'));
 112  $PAGE->set_heading($course->fullname);
 113  $PAGE->set_button(calendar_preferences_button($course));
 114  
 115  $renderer = $PAGE->get_renderer('core_calendar');
 116  
 117  echo $OUTPUT->header();
 118  
 119  // Filter subscriptions which user can't edit.
 120  foreach($subscriptions as $subscription) {
 121      if (!calendar_can_edit_subscription($subscription)) {
 122          unset($subscriptions[$subscription->id]);
 123      }
 124  }
 125  
 126  // Display a table of subscriptions.
 127  echo $renderer->subscription_details($courseid, $subscriptions, $importresults);
 128  // Display the add subscription form.
 129  $form->display();
 130  echo $OUTPUT->footer();