<?php

namespace TFGraphics\SmartImport\Search;

use TFGraphics\SmartImport\Domain\DTO\AttributeDTO;
use TFGraphics\SmartImport\Domain\DTO\ProductDTO;

final class ExactIdentifierMatcher
{
    private const FIELDS = [
        'barcode',
        'ean', 'ean8', 'ean13', 'ean_8', 'ean_13',
        'upc',
        'gtin', 'gtin8', 'gtin12', 'gtin13', 'gtin14',
        'gtin_8', 'gtin_12', 'gtin_13', 'gtin_14',
        'isbn', 'isbn10', 'isbn13', 'isbn_10', 'isbn_13',
        'issn',
        'imdb_id', 'mbid', 'musicbrainz_id',
    ];

    public function matches(ProductDTO $product, string $requested): bool
    {
        $requested = $this->normalize($requested);
        if ($requested === '') { return false; }
        $values = [$product->getBarcode()?->getValue()];
        foreach ($product->getAttributes() as $attribute) {
            if ($attribute instanceof AttributeDTO && in_array(strtolower(trim($attribute->getName())), self::FIELDS, true)) {
                $values[] = $attribute->getValue();
            }
        }
        foreach ($values as $value) {
            if ($this->normalize((string) $value) === $requested) { return true; }
        }
        return false;
    }

    private function normalize(string $value): string
    {
        return strtolower((string) preg_replace('/[^a-z0-9]+/i', '', trim($value)));
    }
}