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

namespace Index\Http\Headers;

use DateTimeInterface;
use Index\DateTime;
use Index\Http\HttpHeader;

class IfModifiedSinceHeader {
    private DateTime $dateTime;

    public function __construct(DateTime $dateTime) {
        $this->dateTime = $dateTime;
    }

    public function getDateTime(): DateTime {
        return $this->dateTime;
    }

    public function isLessThanOrEqual(DateTimeInterface $dateTime): bool {
        return $this->dateTime->isLessThanOrEqual($dateTime);
    }

    public static function parse(HttpHeader $header): IfModifiedSinceHeader {
        return new IfModifiedSinceHeader(DateTime::createFromFormat(\DateTimeInterface::RFC7231, $header->getFirstLine()));
    }
}