<?php
declare(strict_types=1);

namespace IOcornerstone\Framework\Http;

use Psr\Http\Message\ResponseInterface;

final class Response implements ResponseInterface
{
    public function __construct(
        private int $status = 200,
        private array $headers = [],
        private Stream $body = new Stream(STDIN),
        private string $protocol = '1.1'
    ) {}

    public function getStatusCode(): int { return $this->status; }
    public function withStatus($code, $reasonPhrase = ''): self {
        $clone = clone $this;
        $clone->status = $code;
        return $clone;
    }

    public function getBody(): Stream { return $this->body; }
    public function withBody(\Psr\Http\Message\StreamInterface $body): self {
        $clone = clone $this;
        $clone->body = $body;
        return $clone;
    }

    public function getHeaders(): array { return $this->headers; }
    public function hasHeader($name): bool { return isset($this->headers[strtolower($name)]); }
    public function getHeader($name): array { return $this->headers[strtolower($name)] ?? []; }
    public function getHeaderLine($name): string { return implode(',', $this->getHeader($name)); }

    public function withHeader($name, $value): self {
        $clone = clone $this;
        $clone->headers[strtolower($name)] = (array)$value;
        return $clone;
    }

    public function withAddedHeader($name, $value): self {
        $clone = clone $this;
        $clone->headers[strtolower($name)][] = $value;
        return $clone;
    }

    public function withoutHeader($name): self {
        $clone = clone $this;
        unset($clone->headers[strtolower($name)]);
        return $clone;
    }

    public function getProtocolVersion(): string { return $this->protocol; }
    public function withProtocolVersion($version): self {
        $clone = clone $this;
        $clone->protocol = $version;
        return $clone;
    }

    public function getReasonPhrase(): string { return ''; }
}