オカズリンクの一次対応

routes/api.php

@@ -16,3 +16,51 @@ use Illuminate\Http\Request;
 Route::middleware('auth:api')->get('/user', function (Request $request) {
     return $request->user();
 });
+
+Route::get('/ogp', function (Request $request) {
+    $request->validate([
+        'url:required|url'
+    ]);
+
+    $client = new GuzzleHttp\Client();
+    $res = $client->get($request->input('url'));
+    if ($res->getStatusCode() === 200) {
+        $dom = new DOMDocument();
+        @$dom->loadHTML(mb_convert_encoding($res->getBody(), 'HTML-ENTITIES', 'UTF-8'));
+        $xpath = new DOMXPath($dom);
+
+        $result = [
+            'title' => '',
+            'description' => '',
+            'image' => ''
+        ];
+
+        $titleNode = $xpath->query('//meta[@*="og:title"]');
+        foreach ($titleNode as $node) {
+            if (!empty($node->getAttribute('content'))) {
+                $result['title'] = $node->getAttribute('content');
+                break;
+            }
+        }
+
+        $descriptionNode = $xpath->query('//meta[@*="og:description"]');
+        foreach ($descriptionNode as $node) {
+            if (!empty($node->getAttribute('content'))) {
+                $result['description'] = $node->getAttribute('content');
+                break;
+            }
+        }
+
+        $imageNode = $xpath->query('//meta[@*="og:image"]');
+        foreach ($imageNode as $node) {
+            if (!empty($node->getAttribute('content'))) {
+                $result['image'] = $node->getAttribute('content');
+                break;
+            }
+        }
+
+        return response()->json($result);
+    } else {
+        abort($res->getStatusCode());
+    }
+});