add new feature to donwload a calendar

components/Download.php

@@ -0,0 +1,95 @@
+<?php namespace NicoSt\GCalendar\Components;
+
+use Cms\Classes\ComponentBase;
+use NicoSt\GCalendar\Classes\GoogleCalendarService;
+
+class Download extends ComponentBase {
+    private $calPropSeparator = '§§';
+    private $googleIcalUrl = 'https://calendar.google.com/calendar/ical/%s/public/basic.ics';
+
+    /**
+     * Returns information about this component, including name and description.
+     */
+    public function componentDetails() {
+        return [
+            'name'        => 'nicost.gcalendar::lang.component.download.name',
+            'description' => 'nicost.gcalendar::lang.component.download.description'
+        ];
+    }
+
+    public function defineProperties() {
+
+        $calendars = $this->calendarProperties();
+        $customProperties = [];
+        
+        $result = array_merge($customProperties, $calendars);
+        
+        return $result;
+    }
+
+    public function getCalendarDownloads() {
+        
+        // Calenders from config
+        $calendarList = $this->getCalendarsFromProperties();
+        
+        $data = [];
+        foreach($calendarList as $calendarData) {
+            $calendar = [];
+            $calendar['link'] = sprintf($this->googleIcalUrl, $calendarData['id']);
+            $calendar['title'] = $calendarData['title'];
+
+            array_push($data, $calendar);
+        }
+
+        return $data;
+    }
+
+    private function getCalendarsFromProperties() {
+        $calendars = [];
+        foreach($this->properties as $key => $value){
+            $exp_key = explode($this->calPropSeparator, $key);
+            if($exp_key[0] == 'cal' && $this->property($key) == true){
+                $calendar = [];
+                $calendar['id'] = $exp_key[1];
+                $calendar['title'] = $exp_key[2];
+                array_push($calendars, $calendar);
+            }
+        }
+
+        return $calendars;
+    }
+
+    private function calendarProperties() {
+        $service = new GoogleCalendarService();
+        $calendars = $service->calendarList();
+
+        if (isset($calendars['error'])) {
+            $calendars = '';
+        }
+
+        $calendarProperties = [];
+        if (!empty($calendars)) {
+            foreach ($calendars as &$calendar) {
+                $calendarData = [];
+                $calendarData['id'] = $calendar->id;
+                $calendarData['title'] = $calendar->summary;
+
+                $property = $this->createProperty($calendarData);
+                $calendarProperties = array_merge($calendarProperties, $property);
+            }
+        }
+        return $calendarProperties;
+    }
+
+    private function createProperty(array $calendarData) {
+        return [
+            'cal'.$this->calPropSeparator.$calendarData['id'].$this->calPropSeparator.$calendarData['title'] => [
+                'title'     => $calendarData['title'],
+                'type'      => 'checkbox',
+                'group'     => 'nicost.gcalendar::lang.component.download.groups.calendars',
+                // Default to setting from config
+                'default'   => 0,
+            ]
+        ];
+    }
+}