<?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,
            ]
        ];
    }
}