Iwaraのカード表示対応

refs #12

app/MetadataResolver/IwaraResolver.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace App\MetadataResolver;
+
+class IwaraResolver implements Resolver
+{
+    public function resolve(string $url): Metadata
+    {
+        $client = new \GuzzleHttp\Client();
+        $res = $client->get($url);
+        if ($res->getStatusCode() === 200) {
+            $dom = new \DOMDocument();
+            @$dom->loadHTML(mb_convert_encoding($res->getBody(), 'HTML-ENTITIES', 'UTF-8'));
+            $xpath = new \DOMXPath($dom);
+
+            $metadata = new Metadata();
+
+            // find title
+            foreach ($xpath->query('//title') as $node) {
+                $content = $node->textContent;
+                if (!empty($content)) {
+                    $metadata->title = $content;
+                    break;
+                }
+            }
+
+            // find thumbnail
+            foreach ($xpath->query('//*[@id="video-player"]') as $node) {
+                $poster = $node->getAttribute('poster');
+                if (!empty($poster)) {
+                    if (strpos($poster, '//') === 0) {
+                        $poster = 'https:' . $poster;
+                    }
+                    $metadata->image = $poster;
+                    break;
+                }
+            }
+            if (empty($metadata->image)) {
+                // YouTube embedded?
+                foreach ($xpath->query('//div[@class="embedded-video"]//iframe') as $node) {
+                    $src = $node->getAttribute('src');
+                    if (preg_match('~youtube\.com/embed/(\S+)\?~', $src, $matches) !== -1) {
+                        $youtubeId = $matches[1];
+                        $iwaraThumbUrl = 'https://i.iwara.tv/sites/default/files/styles/thumbnail/public/video_embed_field_thumbnails/youtube/' . $youtubeId . '.jpg';
+
+                        $metadata->image = $iwaraThumbUrl;
+                        break;
+                    }
+                }
+            }
+
+            return $metadata;
+        } else {
+            throw new \RuntimeException("{$res->getStatusCode()}: $url");
+        }
+    }
+}

app/MetadataResolver/MetadataResolver.php

@@ -10,6 +10,7 @@ class MetadataResolver implements Resolver
         '~komiflo\.com(/#!)?/comics/(\\d+)~' => KomifloResolver::class,
         '~www\.melonbooks\.co\.jp/detail/detail\.php~' => MelonbooksResolver::class,
         '~ec\.toranoana\.jp/tora_r/ec/item/.*~' => ToranoanaResolver::class,
+        '~iwara\.tv/videos/.*~' => IwaraResolver::class,
         '/.*/' => OGPResolver::class
     ];