From 1160a52753cfc027f970cad9d889f0a5a81c1074 Mon Sep 17 00:00:00 2001
From: Valentin Popov <info@valentineus.link>
Date: Fri, 27 Oct 2017 08:51:27 +0400
Subject: Rename the handler class

---
 classes/handler.php | 108 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 classes/handler.php

(limited to 'classes/handler.php')

diff --git a/classes/handler.php b/classes/handler.php
new file mode 100644
index 0000000..5bc5473
--- /dev/null
+++ b/classes/handler.php
@@ -0,0 +1,108 @@
+<?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/>.
+
+/**
+ * The event handler.
+ *
+ * @package   local_webhooks
+ * @copyright 2017 "Valentin Popov" <info@valentineus.link>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+namespace local_webhooks;
+
+defined("MOODLE_INTERNAL") || die();
+
+require_once($CFG->libdir . "/filelib.php");
+
+use curl;
+
+/**
+ * Defines how to work with events.
+ *
+ * @copyright 2017 "Valentin Popov" <info@valentineus.link>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class handler {
+    /**
+     * External handler.
+     *
+     * @param object $event
+     */
+    public static function events($event) {
+        $enable = get_config("local_webhooks", "enable");
+
+        if (boolval($enable)) {
+            $data = $event->get_data();
+            self::transmitter($data);
+        }
+    }
+
+    /**
+     * Transmitter, processing event and services.
+     *
+     * @param array $data
+     */
+    private static function transmitter($data) {
+        global $DB;
+
+        $callbacks = $DB->get_recordset("local_webhooks_service");
+
+        if ($callbacks->valid()) {
+            foreach ($callbacks as $callback) {
+                self::handler_callback($data, $callback);
+            }
+        }
+
+        $callbacks->close();
+    }
+
+    /**
+     * Processes each callback.
+     *
+     * @param array $data
+     * @param object $callback
+     */
+    private static function handler_callback($data, $callback) {
+        if (boolval($callback->enable)) {
+            $events = array();
+            if (!empty($callback->events)) {
+                $events = unserialize(gzuncompress(base64_decode($callback->events)));
+            }
+
+            if (!empty($events[$data["eventname"]])) {
+                if (!empty($callback->token)) {
+                    $data["token"] = $callback->token;
+                }
+
+                self::send($data, $callback);
+            }
+        }
+    }
+
+    /**
+     * Sending data to the node.
+     *
+     * @param array $data
+     * @param object $callback
+     */
+    private static function send($data, $callback) {
+        $curl = new curl();
+        $curl->setHeader(array("Content-Type: application/$callback->type"));
+        $curl->post($callback->url, json_encode($data));
+        return $curl->getResponse();
+    }
+}
\ No newline at end of file
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