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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   * This page lets users to manage rules for a given course.
  19   *
  20   * @package    tool_monitor
  21   * @copyright  2014 onwards Ankit Agarwal <[email protected]>
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  require_once(__DIR__ . '/../../../config.php');
  26  require_once($CFG->libdir.'/adminlib.php');
  27  
  28  $courseid = optional_param('courseid', 0, PARAM_INT);
  29  $action = optional_param('action', '', PARAM_ALPHA);
  30  $cmid = optional_param('cmid', 0, PARAM_INT);
  31  $ruleid = optional_param('ruleid', 0, PARAM_INT);
  32  $subscriptionid = optional_param('subscriptionid', 0, PARAM_INT);
  33  $confirm = optional_param('confirm', false, PARAM_BOOL);
  34  
  35  // Validate course id.
  36  if (empty($courseid)) {
  37      require_login();
  38  } else {
  39      // They might want to see rules for this course.
  40      $course = get_course($courseid);
  41      require_login($course);
  42      $coursecontext = context_course::instance($course->id);
  43      // Check for caps.
  44      require_capability('tool/monitor:subscribe', $coursecontext);
  45      $coursename = format_string($course->fullname, true, array('context' => $coursecontext));
  46  }
  47  
  48  if (!get_config('tool_monitor', 'enablemonitor')) {
  49      // This should never happen as the this page does not appear in navigation when the tool is disabled.
  50      throw new coding_exception('Event monitoring is disabled');
  51  }
  52  
  53  // Always build the page in site context.
  54  $context = context_system::instance();
  55  $sitename = format_string($SITE->fullname, true, array('context' => $context));
  56  $PAGE->set_context($context);
  57  
  58  // Set up the page.
  59  $indexurl = new moodle_url('/admin/tool/monitor/index.php', array('courseid' => $courseid));
  60  $PAGE->set_url($indexurl);
  61  $PAGE->set_pagelayout('report');
  62  $PAGE->set_title($sitename);
  63  $PAGE->set_heading($sitename);
  64  
  65  // Create/delete subscription if needed.
  66  if (!empty($action)) {
  67      require_sesskey();
  68      switch ($action) {
  69          case 'subscribe' :
  70              $rule = \tool_monitor\rule_manager::get_rule($ruleid);
  71              $rule->subscribe_user($courseid, $cmid);
  72              echo $OUTPUT->header();
  73              echo $OUTPUT->notification(get_string('subcreatesuccess', 'tool_monitor'), 'notifysuccess');
  74              break;
  75          case 'unsubscribe' :
  76              // If the subscription does not exist, then redirect back as the subscription must have already been deleted.
  77              if (!$subscription = $DB->record_exists('tool_monitor_subscriptions', array('id' => $subscriptionid))) {
  78                  redirect(new moodle_url('/admin/tool/monitor/index.php', array('courseid' => $courseid)));
  79              }
  80  
  81              // Set the URLs.
  82              $confirmurl = new moodle_url('/admin/tool/monitor/index.php', array('subscriptionid' => $subscriptionid,
  83                  'courseid' => $courseid, 'action' => 'unsubscribe', 'confirm' => true,
  84                  'sesskey' => sesskey()));
  85              $cancelurl = new moodle_url('/admin/tool/monitor/index.php', array('subscriptionid' => $subscriptionid,
  86                  'courseid' => $courseid, 'sesskey' => sesskey()));
  87              if ($confirm) {
  88                  \tool_monitor\subscription_manager::delete_subscription($subscriptionid);
  89                  echo $OUTPUT->header();
  90                  echo $OUTPUT->notification(get_string('subdeletesuccess', 'tool_monitor'), 'notifysuccess');
  91              } else {
  92                  $subscription = \tool_monitor\subscription_manager::get_subscription($subscriptionid);
  93                  echo $OUTPUT->header();
  94                  echo $OUTPUT->confirm(get_string('subareyousure', 'tool_monitor', $subscription->get_name($context)),
  95                      $confirmurl, $cancelurl);
  96                  echo $OUTPUT->footer();
  97                  exit();
  98              }
  99              break;
 100          default:
 101      }
 102  } else {
 103      echo $OUTPUT->header();
 104  }
 105  
 106  // Render the current subscriptions list.
 107  $totalsubs = \tool_monitor\subscription_manager::count_user_subscriptions();
 108  $renderer = $PAGE->get_renderer('tool_monitor', 'managesubs');
 109  if (!empty($totalsubs)) {
 110      // Show the subscriptions section only if there are subscriptions.
 111      $subs = new \tool_monitor\output\managesubs\subs('toolmonitorsubs', $indexurl, $courseid);
 112      echo $OUTPUT->heading(get_string('currentsubscriptions', 'tool_monitor'), 3);
 113      echo $renderer->render($subs);
 114  }
 115  
 116  // Render the potential rules list.
 117  $totalrules = \tool_monitor\rule_manager::count_rules_by_courseid($courseid);
 118  echo $OUTPUT->heading(get_string('rulescansubscribe', 'tool_monitor'), 3);
 119  $rules = new \tool_monitor\output\managesubs\rules('toolmonitorrules', $indexurl, $courseid);
 120  echo $renderer->render($rules);
 121  
 122  // Check if the user can manage the course rules we are viewing.
 123  if (empty($courseid)) {
 124      $canmanagerules = has_capability('tool/monitor:managerules', $context);
 125  } else {
 126      $canmanagerules = has_capability('tool/monitor:managerules', $coursecontext);
 127  }
 128  if (empty($totalrules)) {
 129      // No rules present. Show a link to manage rules page if permissions permit.
 130      echo html_writer::start_div();
 131      echo html_writer::tag('span', get_string('norules', 'tool_monitor'));
 132      if ($canmanagerules) {
 133          $manageurl = new moodle_url("/admin/tool/monitor/managerules.php", array('courseid' => $courseid));
 134          $a = html_writer::link($manageurl, get_string('managerules', 'tool_monitor'));
 135          $link = "&nbsp;";
 136          $link .= html_writer::tag('span', get_string('manageruleslink', 'tool_monitor', $a));
 137          echo $link;
 138      }
 139      echo html_writer::end_div();
 140  } else if ($canmanagerules) {
 141      $manageurl = new moodle_url("/admin/tool/monitor/managerules.php", array('courseid' => $courseid));
 142      echo $renderer->render_rules_link($manageurl);
 143  }
 144  echo $OUTPUT->footer();