Fetch Amazon product details

AmazonApi.php

<?php

namespace JalalLinuX\AmazonApi;

use Illuminate\Http\Client\PendingRequest;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Http;

class AmazonApi
{
    private PendingRequest $client;

    public function __construct()
    {
        $this->client = Http::baseUrl(self::API_BASE_URI)->asJson()->acceptJson();
    }

    private function fetchMltId(string $asin): string
    {
        return $this->client->get("product/v2/{$asin}")->throw()->json('mlt');
    }

    private function transform(Collection $product): Collection
    {
        return $product->except(self::TRANSFORM['except_keys'])->mapWithKeys(function ($v, $k) {
            if (!is_null(@self::TRANSFORM['map_keys'][$k])) {
                return [self::TRANSFORM['map_keys'][$k] => $v];
            }
            return [$k => $v];
        });
    }

    public function product(string $asin): Collection
    {
        $mltId = $this->fetchMltId($asin);
        $product = $this->client->get("product/v2/mlt-{$mltId}");

        throw_if(!$product->successful(), new \Exception("Can't fetch product with ASIN: {$asin}, MLT: $mltId"));

        Cache::put(self::CACHING_PREFIX . $asin, $product = $product->collect(), self::CACHING_TIME);
        return $this->transform($product);
    }

    const TRANSFORM = [
        'map_keys' => [
            'amazonId' => 'id',
            'englishTitle' => 'title',
            'productImage' => 'image',
        ],
        'except_keys' => [
            'id', 'title', 'parentId', 'amazonParentId', 'canonicalId', 'delivery', 'categories',
            'variations', 'price.rialPrice', 'price.irShipping', 'price.shippingTypes', 'otherMarkets',
        ]
    ];

    const CACHING_TIME = 60;
    const CACHING_PREFIX = 'AMAZON_PRODUCT_';
    const API_BASE_URI = 'https://api.malltina.com';
}