<?php

declare(strict_types=1);

namespace TFGraphics\SmartImport\Domain;

final class DomainSignals
{
    private string $input;
    private string $identifierType;
    private string $brand;
    private string $manufacturer;
    private array $categoryHints;

    public function __construct(
        string $input,
        string $identifierType,
        string $brand = '',
        string $manufacturer = '',
        array $categoryHints = []
    ) {
        $this->input = $this->normalize($input);
        $this->identifierType = $identifierType;
        $this->brand = $this->normalize($brand);
        $this->manufacturer = $this->normalize($manufacturer);
        $this->categoryHints = array_values(array_filter(array_map([$this, 'normalize'], $categoryHints)));
    }

    public static function fromContext(DomainContext $context, string $identifierType): self
    {
        $metadata = $context->getMetadata();
        $categories = $metadata['category_hints'] ?? $metadata['categories'] ?? $metadata['category'] ?? [];

        return new self(
            $context->getInput(),
            $identifierType,
            (string) ($metadata['brand'] ?? ''),
            (string) ($metadata['manufacturer'] ?? ''),
            is_array($categories) ? $categories : [(string) $categories]
        );
    }

    public function getInput(): string
    {
        return $this->input;
    }

    public function getIdentifierType(): string
    {
        return $this->identifierType;
    }

    public function getBrand(): string
    {
        return $this->brand;
    }

    public function getManufacturer(): string
    {
        return $this->manufacturer;
    }

    public function getCategoryHints(): array
    {
        return $this->categoryHints;
    }

    private function normalize(string $value): string
    {
        $normalized = strtolower(trim($value));

        return preg_replace('/\s+/', ' ', $normalized) ?? $normalized;
    }
}