Add error handling in ajax request to get meeting details from DB for…

… editing even options

ajax.php

@@ -31,11 +31,55 @@
 $url = required_param('url', PARAM_URL);
 $result = '';
 if (!empty($url)) {
-    $record = $DB->get_record_sql('SELECT * FROM {atto_teamsmeeting} WHERE ' . $DB->sql_compare_text('link') . ' = ' .
-        $DB->sql_compare_text(':url'), ['url' => $url]);
-    $result = json_encode([$CFG->wwwroot . '/lib/editor/atto/plugins/teamsmeeting/result.php', $record->title, $record->link,
-        $record->options]);
+    $record = atto_teamsmeeting_get_meeting($url);
+    $result = atto_teamsmeeting_meeting_url($record);
 }
 
 echo $result;
 die();
+
+/**
+ * Gets data from the database about the meeting.
+ *
+ * @param string $url The URL of the meeting.
+ * @return object|null The meeting data or null if meeting not found.
+ */
+function atto_teamsmeeting_get_meeting($url) {
+    global $DB;
+    $sql = 'SELECT *
+                  FROM {atto_teamsmeeting}
+                 WHERE ' . $DB->sql_compare_text('link') . ' = ' . $DB->sql_compare_text(':url') . ' ORDER BY id ASC';
+    $records = $DB->get_records_sql($sql, ['url' => $url]);
+
+    $count = count($records);
+    if ($count == 0) {
+        return null;
+    }
+
+    $result = reset($records);
+    if ($count > 1) {
+        array_shift($records);
+        $ids = [];
+        foreach ($records as $record) {
+            $ids[] = $record->id;
+        }
+        $DB->delete_records_list('atto_teamsmeeting', 'id', $ids);
+    }
+
+    return $result;
+}
+
+/**
+ * Gets the meeting URL from the given record.
+ *
+ * @param object|null $record The record containing meeting data.
+ * @return string Returns the JSON-encoded meeting URL and related data.
+ */
+function atto_teamsmeeting_meeting_url($record) {
+    if (is_null($record)) {
+        return json_encode([(new moodle_url('/lib/editor/atto/plugins/teamsmeeting/error.php'))->out(), '', '', '']);
+    }
+
+    return json_encode([(new moodle_url('/lib/editor/atto/plugins/teamsmeeting/result.php'))->out(), $record->title, $record->link,
+            $record->options]);
+}

error.php

@@ -0,0 +1,43 @@
+<?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/>.
+
+/**
+ * A script that displays an error message in iframe when meeting is not found.
+ *
+ * @package     tiny_teamsmeeting
+ * @copyright   2023 Enovation Solutions
+ * @author      Oliwer Banach <[email protected]>
+ * @license     https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+require_once(__DIR__ . '/../../../../../config.php');
+
+require_login();
+
+echo '<div style="display: flex; flex-direction: column; margin-top: 2rem;padding: 2rem;font-family: sans-serif;">
+
+    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="32" xml:space="preserve" xmlns:xlink="http://www.w3.org/1999/xlink"
+         style="width:100px; align-self: center; display: flex; margin-bottom: 1.5rem;">
+         <g><g id="Error_1_"><g id="Error">
+         <circle cx="16" cy="16" id="BG" r="16" style="fill:#D72828;"/>
+         <path d="M14.5,25h3v-3h-3V25z M14.5,6v13h3V6H14.5z" id="Exclamatory_x5F_Sign" style="fill:#E6E6E6;"/>
+         </g></g></g>
+    </svg>
+        <span class="meetingcreatedheader" style="font-size: 20px; font-weight: 600; display: block; text-align: center;">' .
+            get_string('iframe_not_found', 'atto_teamsmeeting') .
+        '</span>';
+
+exit;

lang/en/atto_teamsmeeting.php

@@ -37,3 +37,4 @@
 $string['settings'] = 'Teams Meeting Settings';
 $string['legacy_setting_warning'] = '<br/>
 <span style="color:red">WARNING: The Meetings app deployed at https://enovation.ie/msteams is deprecated and will be removed soon. A new app has been created at https://enomsteams.z16.web.core.windows.net.</span>';
+$string['iframe_not_found'] = 'Meeting not found!';

lang/pl/atto_teamsmeeting.php

@@ -34,3 +34,4 @@
 $string['pluginname'] = 'Teams Meeting';
 $string['privacy:metadata'] = 'atto_teamsmeeting plugin nie przechowuje żadnych danych osobowych.';
 $string['settings'] = 'Ustawienia Teams Meeting';
+$string['iframe_not_found'] = 'Nie znaleziono spotkania!';

version.php

@@ -24,8 +24,8 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version   = 2020032706;
+$plugin->version   = 2020032707;
 $plugin->requires  = 2016052318;
 $plugin->component = 'atto_teamsmeeting';
 $plugin->maturity  = MATURITY_STABLE;
-$plugin->release  = 'v1.2.6';
+$plugin->release  = 'v1.2.7';