From 86775ced8994658048b13d9ff553d9b5bf0a30be Mon Sep 17 00:00:00 2001
From: Simey Lameze <simey@moodle.com>
Date: Wed, 19 Jul 2017 08:59:11 +0800
Subject: [PATCH] MDL-59388 core_calendar: new footer options exporter

---
 .../external/footer_options_exporter.php      | 142 ++++++++++++++++++
 1 file changed, 142 insertions(+)
 create mode 100644 calendar/classes/external/footer_options_exporter.php

diff --git a/calendar/classes/external/footer_options_exporter.php b/calendar/classes/external/footer_options_exporter.php
new file mode 100644
index 00000000000..4024576b7ce
--- /dev/null
+++ b/calendar/classes/external/footer_options_exporter.php
@@ -0,0 +1,142 @@
+<?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/>.
+
+/**
+ * Class for exporting calendar footer view options data.
+ *
+ * @package    core_calendar
+ * @copyright  2017 Simey Lameze <simey@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+namespace core_calendar\external;
+
+defined('MOODLE_INTERNAL') || die();
+
+use core\external\exporter;
+use renderer_base;
+use stdClass;
+use moodle_url;
+
+/**
+ * Class for exporting calendar footer view options data.
+ *
+ * @copyright  2017 Simey Lameze
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class footer_options_exporter extends exporter {
+
+    /**
+     * @var \calendar_information $calendar The calendar to be rendered.
+     */
+    protected $calendar;
+
+    /**
+     * @var int $userid The user id.
+     */
+    protected $userid;
+
+    /**
+     * @var string $token The user sha1 token.
+     */
+    protected $token;
+
+    /**
+     * Constructor for month_exporter.
+     *
+     * @param \calendar_information $calendar The calendar being represented
+     */
+    public function __construct(\calendar_information $calendar, $userid, $token) {
+        $this->calendar = $calendar;
+        $this->userid = $userid;
+        $this->token = $token;
+    }
+
+    /**
+     * Get the export calendar button.
+     *
+     * @param renderer_base $output
+     * @return string The export calendar button html.
+     */
+    protected function get_export_calendar_button(renderer_base $output) {
+        $exportcalendarurl = new moodle_url('/calendar/export.php', ['course' => $this->calendar->course->id]);
+        return $output->single_button($exportcalendarurl->out(false), get_string('exportcalendar', 'calendar'));
+    }
+
+    /**
+     * Get the iCal url.
+     *
+     * @return string The iCal url.
+     */
+    protected function get_ical_url() {
+        return new moodle_url('/calendar/export_execute.php', ['preset_what' => 'all',
+                'preset_time' => 'recentupcoming', 'userid' => $this->userid, 'authtoken'=> $this->token]);
+
+    }
+
+    /**
+     * Get manage subscription button.
+     *
+     * @param renderer_base $output
+     * @return string The manage subscription button html.
+     */
+    protected function get_manage_subscriptions_button(renderer_base $output) {
+        if (calendar_user_can_add_event($this->calendar->course)) {
+            $managesubscriptionurl = new moodle_url('/calendar/managesubscriptions.php',
+                    ['course' => $this->calendar->course->id]);
+            return $output->single_button($managesubscriptionurl->out(false),
+                    get_string('managesubscriptions', 'calendar'));
+        }
+    }
+
+    /**
+     * Get the additional values to inject while exporting.
+     *
+     * @param renderer_base $output The renderer.
+     * @return array Keys are the property names, values are their values.
+     */
+    protected function get_other_values(renderer_base $output) {
+        global $CFG;
+
+        $values = new stdClass();
+
+        if (!empty($CFG->enablecalendarexport)) {
+            $values->exportcalendarbutton = $this->get_export_calendar_button($output);
+            $values->managesubscriptionbutton = $this->get_manage_subscriptions_button($output);
+            $values->icalurl = $this->get_ical_url($output)->out(false);
+        }
+
+        return (array) $values;
+    }
+
+    /**
+     * Return the list of additional properties.
+     *
+     * @return array
+     */
+    public static function define_other_properties() {
+        return array(
+            'exportcalendarbutton' => [
+                'type' => PARAM_RAW,
+            ],
+            'managesubscriptionbutton' => [
+                'type' => PARAM_RAW,
+            ],
+            'icalurl' => [
+                'type' => PARAM_URL,
+            ],
+        );
+    }
+}