<?php

namespace A2nt\SilverStripeMapboxField;

use http\Exception\InvalidArgumentException;
use SilverStripe\Core\Config\Config;
use SilverStripe\Forms\CompositeField;
use SilverStripe\Forms\HiddenField;
use Symbiote\Addressable\MapboxGeocodeService;

class MapboxField extends CompositeField
{
    private static $access_token = null;
    private static $map_style = 'mapbox://styles/mapbox/basic-v9';

    private static $api_css_url = 'https://api.tiles.mapbox.com/mapbox-gl-js/v0.51.0/mapbox-gl.css';
    private static $api_javascript_url = 'https://api.tiles.mapbox.com/mapbox-gl-js/v0.51.0/mapbox-gl.js';
    private static $geocoder_css_url = 'https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-geocoder/v2.3.0/mapbox-gl-geocoder.css';
    private static $geocoder_javascript_url = 'https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-geocoder/v2.3.0/mapbox-gl-geocoder.min.js';

    private $curr_style;

    public static function getAccessToken()
    {
        $config = MapboxField::config();

        return $config->access_token
            ?: Config::inst()->get(MapboxGeocodeService::class, 'mapbox_api_key');
    }

    /**
     * @param string $name
     * @param string $title
     * @param string $latitudeField
     * @param string $longitudeField
     */
    public function __construct($name, $title, $latitudeField, $longitudeField)
    {
        $cfg = self::config();
        // check access_token
        if (!self::getAccessToken()) {
            return user_error(self::class.': Please set Mapbox.com Access token');
        }

        $this->curr_style = $cfg->get('map_style');

        $children = [
            HiddenField::create($latitudeField)
                ->setAttribute('data-mapbox-field', 'Lat'),
            HiddenField::create($longitudeField)
                ->setAttribute('data-mapbox-field', 'Lng')
        ];

        parent::__construct($children);

        $this->setName($name);
        $this->setTitle($title);
    }

    public function getAttributes()
    {
        $attrs = parent::getAttributes();
        return array_merge($attrs, [
            'class' => $attrs['class'].' stacked',
            'data-style' => $this->getStyle(),
        ]);
    }

    public function getStyle()
    {
        return $this->curr_style;
    }

    public function setStyle($style)
    {
        $this->curr_style = $style;
        return $this;
    }
}