<?php

namespace modules\listings\views\form;

use Geo;
use bff\view\FormBlock;

/**
 * Item Form > Geo > District
 * @copyright Tamaranga
 */
class District extends FormBlock
{
    public function init()
    {
        parent::init();

        $this->setTemplate('form/blocks/district', 'listings');
        $this->setKey('district');
        $this->setTitle(_t('item-form', 'Area'));
        $this->prerenderable(true);
    }

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

        $data = parent::data();

        $data['visible'] = $this->visible();
        $data['district_id'] = $this->form->item['district_id'] ?? 0;
        $data['geo_city'] = $this->form->item['geo_city'] ?? 0;

        return $data;
    }

    public function visible()
    {
        $geo = $this->form->category['settings']['geo'] ?? [];
        $city = $this->form->item['geo_city'] ?? 0;

        return ($geo['enabled'] ?? false) && $city && Geo::hasDistricts($city);
    }

    public function reloadBlock($event)
    {
        if (! in_array($event, ['categoryChange', 'cityChange', 'publisherChange'])) {
            return false;
        }
        if ($this->visible()) {
            return $this->render();
        }
        return '';
    }

    public function rules(): array
    {
        return [
            'district_id' => [TYPE_UINT],
        ];
    }

    public function validateUsingRules(array $data = [], ?array $rules = null)
    {
        if (! $this->visible()) {
            unset($data['district_id']);
            return $data;
        }

        return parent::validateUsingRules($data, $rules);
    }

    public function onAfterValidateEvent($p)
    {
        if (! empty($p['data']['geo_city']) && ! empty($p['data']['district_id'])) {
            $districts = Geo::districtList($p['data']['geo_city']);
            if (empty($districts) || !array_key_exists($p['data']['district_id'], $districts)) {
                $p['data']['district_id'] = 0;
            }
        }
    }
}