bug #496 [Platform] Fix Image vs Document support in OpenAI contract (chr-hertel)

This PR was merged into the main branch.

Discussion
----------

[Platform] Fix Image vs Document support in OpenAI contract

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| Docs?         | no
| Issues        |
| License       | MIT

another fix :D

Commits
-------

561a88f Fix Image vs Document support in OpenAI contract

Author: chr-hertel

examples/openai/pdf-input-binary.php

@@ -12,7 +12,7 @@
 use Symfony\AI\Agent\Agent;
 use Symfony\AI\Platform\Bridge\OpenAi\Gpt;
 use Symfony\AI\Platform\Bridge\OpenAi\PlatformFactory;
-use Symfony\AI\Platform\Message\Content\File;
+use Symfony\AI\Platform\Message\Content\Document;
 use Symfony\AI\Platform\Message\Message;
 use Symfony\AI\Platform\Message\MessageBag;
 
@@ -25,8 +25,7 @@
 $messages = new MessageBag(
     Message::ofUser(
         'What is this document about?',
-        // Note: You can use either `File::fromFile` or `Document::fromFile` here.
-        File::fromFile(dirname(__DIR__, 2).'/fixtures/document.pdf'),
+        Document::fromFile(dirname(__DIR__, 2).'/fixtures/document.pdf'),
     ),
 );
 $result = $agent->call($messages);

src/platform/src/Bridge/OpenAi/Contract/DocumentNormalizer.php

@@ -13,6 +13,7 @@
 
 use Symfony\AI\Platform\Bridge\OpenAi\Gpt;
 use Symfony\AI\Platform\Contract\Normalizer\ModelContractNormalizer;
+use Symfony\AI\Platform\Message\Content\Document;
 use Symfony\AI\Platform\Message\Content\File;
 use Symfony\AI\Platform\Model;
 
@@ -39,7 +40,7 @@ public function normalize(mixed $data, ?string $format = null, array $context =
 
     protected function supportedDataClass(): string
     {
-        return File::class;
+        return Document::class;
     }
 
     protected function supportsModel(Model $model): bool

src/platform/tests/Bridge/OpenAi/Contract/DocumentNormalizerTest.php

@@ -20,7 +20,6 @@
 use Symfony\AI\Platform\Contract;
 use Symfony\AI\Platform\Contract\Normalizer\Message\MessageBagNormalizer;
 use Symfony\AI\Platform\Message\Content\Document;
-use Symfony\AI\Platform\Message\Content\File;
 
 #[Medium]
 #[CoversClass(DocumentNormalizer::class)]
@@ -34,9 +33,6 @@ public function testSupportsNormalization()
         $this->assertTrue($normalizer->supportsNormalization(new Document('some content', 'application/pdf'), context: [
             Contract::CONTEXT_MODEL => new Gpt(),
         ]));
-        $this->assertTrue($normalizer->supportsNormalization(new File('some content', 'application/pdf'), context: [
-            Contract::CONTEXT_MODEL => new Gpt(),
-        ]));
         $this->assertFalse($normalizer->supportsNormalization('not a document'));
     }
 
@@ -45,26 +41,26 @@ public function testGetSupportedTypes()
         $normalizer = new DocumentNormalizer();
 
         $expected = [
-            File::class => true,
+            Document::class => true,
         ];
 
         $this->assertSame($expected, $normalizer->getSupportedTypes(null));
     }
 
     #[DataProvider('normalizeDataProvider')]
-    public function testNormalize(File $file, array $expected)
+    public function testNormalize(Document $document, array $expected)
     {
         $normalizer = new DocumentNormalizer();
 
-        $normalized = $normalizer->normalize($file);
+        $normalized = $normalizer->normalize($document);
 
         $this->assertEquals($expected, $normalized);
     }
 
     public static function normalizeDataProvider(): iterable
     {
         yield 'document from file' => [
-            File::fromFile(\dirname(__DIR__, 6).'/fixtures/document.pdf'),
+            Document::fromFile(\dirname(__DIR__, 6).'/fixtures/document.pdf'),
             [
                 'type' => 'file',
                 'file' => [