PatreonResolverを追加 (#51)

app/MetadataResolver/MetadataResolver.php

@@ -15,6 +15,7 @@ class MetadataResolver implements Resolver
         '~www\.pixiv\.net/member_illust\.php\?illust_id=\d+~' => PixivResolver::class,
         '~fantia\.jp/posts/\d+~' => FantiaResolver::class,
         '~dmm\.co\.jp/~' => FanzaResolver::class,
+        '~www\.patreon\.com/~' => PatreonResolver::class,
         '~www\.deviantart\.com/.*/art/.*~' => DeviantArtResolver::class,
         '/.*/' => OGPResolver::class
     ];

app/MetadataResolver/PatreonResolver.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace App\MetadataResolver;
+
+use Carbon\Carbon;
+
+class PatreonResolver implements Resolver
+{
+    public function resolve(string $url): Metadata
+    {
+        $client = new \GuzzleHttp\Client();
+        $res = $client->get($url);
+        if ($res->getStatusCode() === 200) {
+            $ogpResolver = new OGPResolver();
+            $metadata = $ogpResolver->parse($res->getBody());
+
+            parse_str(parse_url($metadata->image, PHP_URL_QUERY), $temp);
+            $expires_at_unixtime = $temp["token-time"];
+            $expires_at = Carbon::createFromTimestamp($expires_at_unixtime);
+
+            $metadata->expires_at = $expires_at;
+
+            return $metadata;
+        } else {
+            throw new \RuntimeException("{$res->getStatusCode()}: $url");
+        }
+    }
+}