From 01bea07d9322817babd513cf695e3d8a7079a2a4 Mon Sep 17 00:00:00 2001
From: Ankit Agarwal <ankit@moodle.com>
Date: Mon, 10 Dec 2012 14:03:51 +0800
Subject: [PATCH] MDL-37077 webservices: Implementing the WS api
 core_calendar_delete_calendar_events()

---
 calendar/externallib.php | 106 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 calendar/externallib.php

diff --git a/calendar/externallib.php b/calendar/externallib.php
new file mode 100644
index 00000000000..320d81c0958
--- /dev/null
+++ b/calendar/externallib.php
@@ -0,0 +1,106 @@
+<?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/>.
+
+
+/**
+ * External calendar API
+ *
+ * @package    core_calendar
+ * @category   external
+ * @copyright  2012 Ankit Agarwal
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @since Moodle 2.5
+ */
+
+defined('MOODLE_INTERNAL') || die;
+
+require_once("$CFG->libdir/externallib.php");
+
+/**
+ * Calendar external functions
+ *
+ * @package    core_calendar
+ * @category   external
+ * @copyright  2012 Ankit Agarwal
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @since Moodle 2.5
+ */
+class core_calendar_external extends external_api {
+
+
+    /**
+     * Returns description of method parameters
+     *
+     * @return external_function_parameters
+     * @since Moodle 2.5
+     */
+    public static function delete_calendar_events_parameters() {
+        return new external_function_parameters(
+                array('events' => new external_multiple_structure(
+                        new external_single_structure(
+                                array(
+                                        'eventid' => new external_value(PARAM_INT, 'Event ID', VALUE_REQUIRED, '', NULL_NOT_ALLOWED),
+                                        'repeat'  => new external_value(PARAM_BOOL, 'Delete comeplete series if repeated event')
+                                ), 'List of events to delete'
+                        )
+                    )
+                )
+        );
+    }
+
+    /**
+     * Delete Calendar events
+     *
+     * @param array $eventids A list of event ids with repeat flag to delete
+     * @return null
+     * @since Moodle 2.5
+     */
+    public static function delete_calendar_events($events) {
+        global $CFG, $DB;
+        require_once($CFG->dirroot."/calendar/lib.php");
+
+        // Parameter validation.
+        $params = self::validate_parameters(self:: delete_calendar_events_parameters(), array('events' => $events));
+
+        $transaction = $DB->start_delegated_transaction();
+
+        foreach ($params['events'] as $event) {
+            $eventobj = calendar_event::load($event['eventid']);
+
+            // Let's check if the user is allowed to delete an event.
+            if (!calendar_edit_event_allowed($eventobj)) {
+                throw new moodle_exception("nopermissions");
+            }
+            // Time to do the magic.
+            $eventobj->delete($event['repeat']);
+        }
+
+        // Everything done smoothly, let's commit.
+        $transaction->allow_commit();
+
+        return null;
+    }
+
+    /**
+     * Returns description of method result value
+     *
+     * @return external_description
+     * @since Moodle 2.5
+     */
+    public static function  delete_calendar_events_returns() {
+        return null;
+    }
+}
-- 
2.17.1