From 7f702f2ea2c00fe3a7877a8ad3f5dbed85273aa8 Mon Sep 17 00:00:00 2001
From: Jason Platts <j.platts@open.ac.uk>
Date: Mon, 11 May 2015 11:18:22 +0100
Subject: [PATCH] Collab: Add logging when user gets session problem on saving
 #17782

---
 classes/event/save_failed.php | 105 ++++++++++++++++++++++++++++++++++
 confirmloggedin.php           |  16 ++++++
 lang/en/ouwiki.php            |   1 +
 version.php                   |   2 +-
 4 files changed, 123 insertions(+), 1 deletion(-)
 create mode 100644 classes/event/save_failed.php

diff --git a/classes/event/save_failed.php b/classes/event/save_failed.php
new file mode 100644
index 0000000..7b094d6
--- /dev/null
+++ b/classes/event/save_failed.php
@@ -0,0 +1,105 @@
+<?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/>.
+
+/**
+ *
+ * @package    mod_ouwiki
+ * @copyright  2015 The Open University
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace mod_ouwiki\event;
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * The mod_ouwiki page saving failed event class.
+ *
+ * @package    mod_ouwiki
+ * @since      Moodle 2.7
+ * @copyright  2015 The Open University
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class save_failed extends \core\event\base {
+
+    /**
+     * Init method.
+     *
+     * @return void
+     */
+    protected function init() {
+        $this->data['crud'] = 'u';
+        $this->data['edulevel'] = self::LEVEL_OTHER;
+    }
+
+    /**
+     * Returns description of what happened.
+     *
+     * @return string
+     */
+    public function get_description() {
+        $string = 'OUwiki page edit failed due to session error.';
+        if (!empty($this->other['pid'])) {
+            $string .= " Wiki cm id '{$this->other['pid']}'.";
+        }
+        return $string;
+    }
+
+    /**
+     * Return localised event name.
+     *
+     * @return string
+     */
+    public static function get_name() {
+        return get_string('event:savefailed', 'mod_ouwiki');
+    }
+
+    /**
+     * Get URL related to the action
+     *
+     * @return \moodle_url
+     */
+    public function get_url() {
+        return new \moodle_url($this->other['page']);
+    }
+
+    /**
+     * Return the legacy event log data.
+     *
+     * @return array|null
+     */
+    protected function get_legacy_logdata() {
+        global $SITE;
+        $url = str_replace('/mod/ouwiki/', '', $this->other['page']);
+        return array($SITE->id, 'ouwiki', 'error editpage', $this->other['page'], 'session error',
+                $this->contextinstanceid);
+    }
+
+    /**
+     * Custom validation.
+     *
+     * @throws \coding_exception
+     * @return void
+     */
+    protected function validate_data() {
+        parent::validate_data();
+
+        if (!isset($this->other['page'])) {
+            throw new \coding_exception('The \'page\' value must be set in other.');
+        }
+    }
+
+}
diff --git a/confirmloggedin.php b/confirmloggedin.php
index 8b459fd..4987ca8 100644
--- a/confirmloggedin.php
+++ b/confirmloggedin.php
@@ -34,6 +34,22 @@
     require_login(null, true);
     require_sesskey();
 } catch (moodle_exception $e) {
+    $pid = 0;
+    $url = '/mod/ouwiki/edit.php';
+    if (!empty($_SERVER['HTTP_REFERER'])) {
+        $url = new moodle_url($_SERVER['HTTP_REFERER']);
+        $rpid = $url->get_param('id');
+        if (!empty($rpid)) {
+            $pid = $rpid;
+        }
+        $url = $url->out_as_local_url();
+    }
+    $params = array(
+            'context' => context_system::instance(),
+            'other' => array('page' => $url, 'pid' => $pid)
+    );
+    $event = \mod_ouwiki\event\save_failed::create($params);
+    $event->trigger();
     exit;
 }
 
diff --git a/lang/en/ouwiki.php b/lang/en/ouwiki.php
index 86c1350..3e4c2ce 100644
--- a/lang/en/ouwiki.php
+++ b/lang/en/ouwiki.php
@@ -582,4 +582,5 @@
 $string['event:ouwikidelete'] = 'ouwiki version delete';
 $string['event:ouwikipagecreated'] = 'ouwiki page created';
 $string['event:ouwikipageupdated'] = 'ouwiki page updated';
+$string['event:savefailed'] = 'Session fail on page save';
 $string['ouwikicrontask'] = 'OU wiki maintenance jobs';
diff --git a/version.php b/version.php
index a8fc4ec..48d6dbc 100644
--- a/version.php
+++ b/version.php
@@ -22,7 +22,7 @@
  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-$plugin->version  = 2014120300;
+$plugin->version  = 2015051100;
 $plugin->requires = 2014051200;
 $plugin->component = 'mod_ouwiki';
 $plugin->maturity = MATURITY_STABLE;