Handle 400 Bad Request response

Author: oesteve

src/platform/src/Bridge/OpenAi/Gpt/ResultConverter.php

@@ -50,6 +50,11 @@ public function convert(RawResultInterface|RawHttpResult $result, array $options
             throw new AuthenticationException($errorMessage);
         }
 
+        if (400 === $response->getStatusCode()) {
+            $errorMessage = json_decode($response->getContent(false), true)['error']['message'] ?? 'Bad Request';
+            throw new RuntimeException($errorMessage);
+        }
+
         if (429 === $response->getStatusCode()) {
             $headers = $response->getHeaders(false);
             $resetTime = null;

src/platform/tests/Bridge/OpenAi/Gpt/ResultConverterTest.php

@@ -196,4 +196,21 @@ public function testThrowsExceptionForUnsupportedFinishReason()
 
         $converter->convert(new RawHttpResult($httpResponse));
     }
+
+    public function testThrowsRuntimeExceptionOnBadRequest()
+    {
+        $converter = new ResultConverter();
+        $httpResponse = self::createMock(ResponseInterface::class);
+        $httpResponse->method('getStatusCode')->willReturn(400);
+        $httpResponse->method('getContent')->willReturn(json_encode([
+            'error' => [
+                'message' => 'Bad Request: invalid parameters',
+            ],
+        ]));
+
+        $this->expectException(RuntimeException::class);
+        $this->expectExceptionMessage('Bad Request: invalid parameters');
+
+        $converter->convert(new RawHttpResult($httpResponse));
+    }
 }