<?php

namespace modules\geo\views;

use Geo;
use bff\view\FormBlock;

/**
 * Блок для выбора станции метро
 * @copyright Tamaranga
 */
class MetroStationSelect extends FormBlock
{
    /** @var int|callable id выбранной станции */
    public $stationId = 0;
    /** @var int|callable id выбранного города */
    public $cityId = 0;
    /** @var string имя инпута выбора станции */
    public $fieldName = 'metro_id';
    /** @var array артибуты инпута с id станции */
    public $attr = [];

    public function init()
    {
        parent::init();

        $this->setTemplate('metro_select', 'geo');
        $this->setKey('metro_select');
        $this->setTitle(_t('geo', 'Metro'));
    }

    public function data()
    {
        if (! Geo::metroEnabled()) {
            return false;
        }

        $data = parent::data();

        $data['stationId'] = $stationId = $this->stationId();
        $data['cityId'] = $cityId = $this->cityId();

        $data['visible'] = $this->visible();
        $data['metro_data'] = [];
        if ($cityId) {
            $data['metro_data'] = Geo::cityMetro($cityId, ['selected' => $stationId]);
            if ($stationId && empty($data['metro_data']['sel']['id'])) {
                $data['stationId'] = 0;
            }
        }

        return $data;
    }

    public function stationId()
    {
        if (is_callable($this->stationId)) {
            return call_user_func($this->stationId);
        }

        return $this->stationId;
    }

    public function cityId()
    {
        if (is_callable($this->cityId)) {
            return call_user_func($this->cityId);
        }

        return $this->cityId;
    }

    public function visible()
    {
        return Geo::hasMetro($this->cityId());
    }

    /**
     * Handle form reload block
     * @param $event string
     * @return string
     */
    public function reloadBlock($event)
    {
        if (is_callable($this->onReloadBlock)) {
            return call_user_func($this->onReloadBlock, $event);
        }
        if ($this->visible()) {
            return $this->render();
        }
        return '';
    }

    public function rules(): array
    {
        $rules = [];

        $name = $this->fieldName;
        if (! empty($name)) {
            $rules[$name] = [TYPE_UINT];
        }

        return $rules;
    }
}