PlurkResolverを追加

app/MetadataResolver/MetadataResolver.php

@@ -23,6 +23,7 @@ class MetadataResolver implements Resolver
         '~www\.deviantart\.com/.*/art/.*~' => DeviantArtResolver::class,
         '~\.syosetu\.com/n\d+[a-z]{2,}~' => NarouResolver::class,
         '~ci-en\.jp/creator/\d+/article/\d+~' => CienResolver::class,
+        '~www\.plurk\.com\/p\/.*~' => PlurkResolver::class,
     ];
 
     public $mimeTypes = [

app/MetadataResolver/PlurkResolver.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace App\MetadataResolver;
+
+use GuzzleHttp\Client;
+
+class PlurkResolver implements Resolver
+{
+    /**
+     * @var Client
+     */
+    private $client;
+    /**
+     * @var OGPResolver
+     */
+    private $ogpResolver;
+
+    public function __construct(Client $client, OGPResolver $ogpResolver)
+    {
+        $this->client = $client;
+        $this->ogpResolver = $ogpResolver;
+    }
+
+    public function resolve(string $url): Metadata
+    {
+        $res = $this->client->get($url);
+        if ($res->getStatusCode() === 200) {
+            $metadata = $this->ogpResolver->parse($res->getBody());
+
+            $dom = new \DOMDocument();
+            @$dom->loadHTML(mb_convert_encoding($res->getBody(), 'HTML-ENTITIES', 'UTF-8'));
+            $xpath = new \DOMXPath($dom);
+            $imageNode = $xpath->query('//div[@class="text_holder"]/a[1]')->item(0);
+
+            if($imageNode) {
+                $metadata->image = $imageNode->getAttribute('href');
+            }
+
+            return $metadata;
+        } else {
+            throw new \RuntimeException("{$res->getStatusCode()}: $url");
+        }
+    }
+}