tissue/app/Services/MetadataResolveService.php

65 lines
2.1 KiB
PHP

<?php
namespace App\Services;
use App\Metadata;
use App\MetadataResolver\DeniedHostException;
use App\MetadataResolver\MetadataResolver;
use App\Tag;
use App\Utilities\Formatter;
use GuzzleHttp\Exception\TransferException;
use Illuminate\Support\Facades\Log;
class MetadataResolveService
{
/** @var MetadataResolver */
private $resolver;
/** @var Formatter */
private $formatter;
public function __construct(MetadataResolver $resolver, Formatter $formatter)
{
$this->resolver = $resolver;
$this->formatter = $formatter;
}
public function execute(string $url): Metadata
{
// URLの正規化
$url = $this->formatter->normalizeUrl($url);
// 自分自身は解決しない
if (parse_url($url, PHP_URL_HOST) === parse_url(config('app.url'), PHP_URL_HOST)) {
throw new DeniedHostException($url);
}
// 無かったら取得
// TODO: ある程度古かったら再取得とかありだと思う
$metadata = Metadata::find($url);
if ($metadata == null || ($metadata->expires_at !== null && $metadata->expires_at < now())) {
try {
$resolved = $this->resolver->resolve($url);
$metadata = Metadata::updateOrCreate(['url' => $url], [
'title' => $resolved->title,
'description' => $resolved->description,
'image' => $resolved->image,
'expires_at' => $resolved->expires_at
]);
$tagIds = [];
foreach ($resolved->normalizedTags() as $tagName) {
$tag = Tag::firstOrCreate(['name' => $tagName]);
$tagIds[] = $tag->id;
}
$metadata->tags()->sync($tagIds);
} catch (TransferException $e) {
// 何らかの通信エラーによってメタデータの取得に失敗した時、とりあえずエラーログにURLを残す
Log::error(self::class . ': メタデータの取得に失敗 URL=' . $url);
throw $e;
}
}
return $metadata;
}
}