Link.php

<?php declare(strict_types=1);

namespace Yireo\LinkPreload\Link;

class Link
{
    /**
     * @var string
     */
    private $url;

    /**
     * @var string
     */
    private $type;

    /**
     * @var string
     */
    private $originalHtml;

    /**
     * Link constructor.
     * @param string $url
     * @param string $type
     * @param string $originalHtml
     */
    public function __construct(string $url, string $type, string $originalHtml) {
        $this->url = $url;
        $this->type = $type;
        $this->originalHtml = $originalHtml;
    }

    /**
     * @return string
     */
    public function getUrl(): string
    {
        return $this->url;
    }

    /**
     * @return string
     */
    public function getType(): string
    {
        return $this->type;
    }

    /**
     * @return string
     */
    public function getOriginalHtml(): string
    {
        return $this->originalHtml;
    }

    /**
     * @return string
     */
    public function getHeader(): string
    {
        $newValue = [
            '<' . $this->getUrl() . '>',
            'rel=preload',
            'as=' . $this->getType(),
            'nopush',
        ];

        if ($this->getType() === 'font') {
            $newValue[] = 'crossorigin=anonymous';
        }

        return implode('; ', $newValue);
    }
}