<?php

namespace modules\listings;

use Listings;
use bff\img\ImageUploader;

class CategoryIcon_ extends ImageUploader
{
    # варианты иконок
    public const BIG = 'b'; # большая
    public const SMALL = 's'; # малая

    # ключи размеров
    public const szOriginal = 'o'; # оригинальный размер

    /**
     * @param int $categoryID ID категории
     * @return static
     */
    public static function i(int $categoryID = 0)
    {
        bff()->singletonIf('listings.category.icon', function () {
            return new static();
        });

        /** @var static $i */
        $i = bff('listings.category.icon');
        $i->setRecordID($categoryID);
        return $i;
    }

    public function initSettings()
    {
        $this->path = $this->app->path('cats', 'images');
        $this->pathTmp = $this->app->path('tmp', 'images');
        $this->url = $this->app->url('cats', 'images');
        $this->urlTmp = $this->app->url('tmp', 'images');

        $this->table = Listings::TABLE_CATEGORIES;
        $this->fieldID = 'id';
        $this->filenameLetters = 4;
        $variants = $this->getVariants();
        if (!empty($variants)) {
            reset($variants);
            $this->setVariant(key($variants));
        }

        $this->extensionsAllowed[] = 'svg';
    }

    /**
     * Формирование ссылки (URL) на иконку категории
     * @param int $categoryID ID категории
     * @param string $fileName
     * @param string $variantKey
     * @return string
     */
    public function url(int $categoryID, string $fileName, string $variantKey = self::BIG): string
    {
        $this->setRecordID($categoryID);

        if (empty($fileName)) {
            # иконка-заглушка
            return $this->url . 'default-' . $variantKey . '.svg';
        }

        return $this->app->filter(
            'listings.category.icon.url',
            $this->getURL($fileName, self::szOriginal),
            [
                'id' => $categoryID,
                'filename' => $fileName,
                'size' => $variantKey,
            ]
        );
    }

    /**
     * Список доступных вариантов размеров
     * @return array
     */
    public function getVariants()
    {
        return $this->app->filter('listings.category.icon.variants', [
            'icon_' . self::BIG   => [
                'title' => _t('listings', 'Icon (large)'),
                'key'   => self::BIG,
                'sizes' => [
                    self::szOriginal => ['width' => 140, 'height' => 140, 'o' => true],
                ],
            ],
            'icon_' . self::SMALL => [
                'title' => _t('listings', 'Icon (small)'),
                'key'   => self::SMALL,
                'sizes' => [
                    self::szOriginal => ['width' => 70, 'height' => 70, 'o' => true],
                ],
            ],
        ], $this);
    }

    /**
     * @param string $key
     * @return void
     */
    public function setVariant(string $key)
    {
        $list = $this->getVariants();
        if (isset($list[$key])) {
            $this->fieldImage = $key;
            $this->sizes = $list[$key]['sizes'];
        }
    }
}