<?php

declare(strict_types=1);

namespace DigiComp\AttachmentViewUtility;

use cardinalby\ContentDisposition\ContentDisposition;
use GuzzleHttp\Psr7\Response;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\StreamInterface;

trait AttachmentViewTrait
{
    abstract protected function getAttachmentName(): string;

    /**
     * @return string|resource|StreamInterface|null
     */
    abstract protected function getAttachmentContent();

    abstract protected function getAttachmentMimeType(): string;

    protected function addOptionsForAttachment(): void
    {
        if (\property_exists($this, 'supportedOptions')) {
            $this->supportedOptions['attachmentCharset'] = [
                'utf-8',
                'Charset of the content or FALSE if you want to suppress the information in header',
                'string|false',
            ];
            $this->supportedOptions['attachmentDisposition'] = [
                'attachment',
                'One of "inline" or "attachment"',
                'string',
            ];
        } else {
            throw new \RuntimeException('supported option could not be set', 1697552694);
        }
    }

    public function render(): ResponseInterface
    {
        if ($this->options['attachmentCharset'] === false) {
            $charset = '';
        } else {
            $charset = '; charset=' . $this->options['attachmentCharset'];
        }
        return new Response(
            200,
            [
                'Content-Disposition' => ContentDisposition::create(
                    $this->getAttachmentName(),
                    true,
                    $this->options['attachmentDisposition']
                )->format(),
                'Content-Type' => $this->getAttachmentMimeType() . $charset,
            ],
            $this->getAttachmentContent()
        );
    }
}