Facebook and Instagram adapters #392

Author: oscarotero

README.md

@@ -331,8 +331,10 @@ If you need to pass settings to your detectors, you can use the `setSettings` me
 $info = $embed->get($url);
 
 $info->setSettings([
-    'oembed:query_parameters' => []  //Extra parameters send to oembed
-    'twitch:parent' => 'example.com' //Required to embed twitch videos as iframe
+    'oembed:query_parameters' => [],  //Extra parameters send to oembed
+    'twitch:parent' => 'example.com', //Required to embed twitch videos as iframe
+    'facebook:token' => '1234|5678',  //Required to embed content from Facebook
+    'instagram:token' => '1234|5678', //Required to embed content from Instagram
 ]);
 ```
 

src/Adapters/Facebook/Extractor.php

@@ -15,6 +15,7 @@ public function __construct(UriInterface $uri, RequestInterface $request, Respon
     {
         parent::__construct($uri, $request, $response, $crawler);
 
+        $this->oembed = new OEmbed($this);
         $this->title = new Detectors\Title($this);
     }
 }

src/Adapters/Facebook/OEmbed.php

@@ -0,0 +1,71 @@
+<?php
+declare(strict_types = 1);
+
+namespace Embed\Adapters\Facebook;
+
+use Embed\OEmbed as Base;
+use Psr\Http\Message\UriInterface;
+
+class OEmbed extends Base
+{
+    const ENDPOINT_PAGE = "https://graph.facebook.com/v8.0/oembed_page";
+    const ENDPOINT_POST = "https://graph.facebook.com/v8.0/oembed_post";
+    const ENDPOINT_VIDEO = "https://graph.facebook.com/v8.0/oembed_url";
+
+    protected function detectEndpoint(): ?UriInterface
+    {
+        $token = $this->extractor->getSetting('facebook:token');
+
+        if (!$token) {
+            return null;
+        }
+
+        $uri = $this->extractor->getUri();
+        $queryParameters = $this->getOembedQueryParameters((string) $uri);
+        $queryParameters['access_token'] = $token;
+
+        return $this->extractor->getCrawler()
+            ->createUri($this->getEndpoint($uri->getPath()))
+            ->withQuery($queryParameters);
+    }
+
+    private function getEndpoint(string $path): string
+    {
+        /* Videos
+        https://www.facebook.com/{page-name}/videos/{video-id}/
+        https://www.facebook.com/{username}/videos/{video-id}/
+        https://www.facebook.com/video.php?id={video-id}
+        https://www.facebook.com/video.php?v={video-id}
+        */
+        if (strpos($path, '/video.php') === 0
+            || strpos($path, '/videos/') !== false
+        ) {
+            return self::ENDPOINT_VIDEO;
+        }
+
+        /* Posts
+        https://www.facebook.com/{page-name}/posts/{post-id}
+        https://www.facebook.com/{username}/posts/{post-id}
+        https://www.facebook.com/{username}/activity/{activity-id}
+        https://www.facebook.com/photo.php?fbid={photo-id}
+        https://www.facebook.com/photos/{photo-id}
+        https://www.facebook.com/permalink.php?story_fbid={post-id}
+        https://www.facebook.com/media/set?set={set-id}
+        https://www.facebook.com/questions/{question-id}
+        https://www.facebook.com/notes/{username}/{note-url}/{note-id}
+        */
+        if (strpos($path, '/photo.php') === 0
+            || strpos($path, '/photos/') === 0
+            || strpos($path, '/permalink.php') === 0
+            || strpos($path, '/media/') === 0
+            || strpos($path, '/questions/') === 0
+            || strpos($path, '/notes/') === 0
+            || strpos($path, '/posts/') !== false
+            || strpos($path, '/activity/') !== false
+        ) {
+            return self::ENDPOINT_POST;
+        }
+
+        return self::ENDPOINT_PAGE;
+    }
+}

src/Adapters/Instagram/Extractor.php

@@ -0,0 +1,20 @@
+<?php
+declare(strict_types = 1);
+
+namespace Embed\Adapters\Instagram;
+
+use Embed\Extractor as Base;
+use Embed\Http\Crawler;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\UriInterface;
+
+class Extractor extends Base
+{
+    public function __construct(UriInterface $uri, RequestInterface $request, ResponseInterface $response, Crawler $crawler)
+    {
+        parent::__construct($uri, $request, $response, $crawler);
+
+        $this->oembed = new OEmbed($this);
+    }
+}

src/Adapters/Instagram/OEmbed.php

@@ -0,0 +1,29 @@
+<?php
+declare(strict_types = 1);
+
+namespace Embed\Adapters\Instagram;
+
+use Embed\OEmbed as Base;
+use Psr\Http\Message\UriInterface;
+
+class OEmbed extends Base
+{
+    const ENDPOINT = "https://graph.facebook.com/v8.0/instagram_oembed";
+
+    protected function detectEndpoint(): ?UriInterface
+    {
+        $token = $this->extractor->getSetting('instagram:token');
+
+        if (!$token) {
+            return null;
+        }
+
+        $uri = $this->extractor->getUri();
+        $queryParameters = $this->getOembedQueryParameters((string) $uri);
+        $queryParameters['access_token'] = $token;
+
+        return $this->extractor->getCrawler()
+            ->createUri(self::ENDPOINT)
+            ->withQuery($queryParameters);
+    }    
+}

src/OEmbed.php

@@ -49,7 +49,7 @@ protected function fetchData(): array
         return $this->extractJSON((string) $response->getBody());
     }
 
-    private function detectEndpoint(): ?UriInterface
+    protected function detectEndpoint(): ?UriInterface
     {
         $document = $this->extractor->getDocument();