<?php namespace NicoSt\GCalendar\FormWidgets;

use Backend\Classes\FormWidgetBase;
use Log;
use Flash;
use Lang;

use NicoSt\GCalendar\Models\Settings;
use NicoSt\GCalendar\Classes\GoogleCalendarService;

class CalendarSelector extends FormWidgetBase {

    protected $defaultAlias = 'calendarSelector';

    public function getSaveValue($value) {
        if(!isset($value)) {
            return [];
        }

        $calendarsToSave = [];
        foreach ($value as &$calendar) {
            if (array_key_exists('checked', $calendar)) {
                $calendarsToSave[] = $calendar;
            }
        }
        return $calendarsToSave;
    }

    public function render() {

        $service = new GoogleCalendarService();
        $calendars = $service->calendarList();

        if (isset($calendars['error'])) {
            $calendars = '';
        }

        $this->vars['calendars'] = $calendars;
        $this->vars['saved_selector'] = $this->extractIds();

        return $this->makePartial('selector');
    }

    private function extractIds() {
        $calendarSelectors = Settings::get('calendar_selector', []);

        $ids = [];
        foreach ($calendarSelectors as &$selector) {
            $ids[] = $selector['id'];
        }
        
        return $ids;
    }
}