<?php
// ConnectionHeader.php
// Created: 2022-02-14
// Updated: 2022-02-27

namespace Index\Http\Headers;

use Index\Http\HttpHeader;

class ConnectionHeader {
    private array $params;

    public function __construct(array $params) {
        $this->params = $params;
    }

    public function getParams(): array {
        return $this->params;
    }

    public function hasParam(string $directive): bool {
        return in_array($directive, $this->params);
    }

    public static function parse(HttpHeader $header): ConnectionHeader {
        return new ConnectionHeader(
            array_unique(
                array_map(
                    fn($directive) => trim($directive),
                    explode(',', strtolower($header->getFirstLine()))
                )
            )
        );
    }
}