Remove perplexity case and make default throw exception

- Remove specific perplexity case from createModelForPlatform method
- Change default case to throw InvalidArgumentException with platform name
- Update test to use generic unsupported platform instead of perplexity
- Provides better error messages for unsupported platforms

Author: OskarStark

src/ai-bundle/src/Command/PlatformInvokeCommand.php

@@ -156,8 +156,7 @@ private function createModelForPlatform(string $platformName, string $modelName)
             'google' => new \Symfony\AI\Platform\Bridge\Gemini\Gemini($modelName),
             'ollama' => new \Symfony\AI\Platform\Bridge\Ollama\Ollama($modelName),
             'mistral' => new \Symfony\AI\Platform\Bridge\Mistral\Mistral($modelName),
-            'perplexity' => throw new InvalidArgumentException('Perplexity platform is not yet supported in ai:platform:invoke command'),
-            default => new Model($modelName), // Fallback to generic model
+            default => throw new InvalidArgumentException(\sprintf('Platform "%s" is not supported in ai:platform:invoke command', $platformName)),
         };
     }
 }

src/ai-bundle/tests/Command/PlatformInvokeCommandTest.php

@@ -182,23 +182,23 @@ public function testExecuteWithWhitespaceOnlyModel()
         ]);
     }
 
-    public function testExecuteWithPerplexityPlatformThrowsException()
+    public function testExecuteWithUnsupportedPlatformThrowsException()
     {
         $platforms = $this->createMock(ServiceLocator::class);
         $mockPlatform = $this->createMock(PlatformInterface::class);
-        $platforms->method('getProvidedServices')->willReturn(['perplexity' => 'service_class']);
-        $platforms->method('has')->with('perplexity')->willReturn(true);
-        $platforms->method('get')->with('perplexity')->willReturn($mockPlatform);
+        $platforms->method('getProvidedServices')->willReturn(['unsupported' => 'service_class']);
+        $platforms->method('has')->with('unsupported')->willReturn(true);
+        $platforms->method('get')->with('unsupported')->willReturn($mockPlatform);
 
         $command = new PlatformInvokeCommand($platforms);
 
         $this->expectException(InvalidArgumentException::class);
-        $this->expectExceptionMessage('Perplexity platform is not yet supported in ai:platform:invoke command');
+        $this->expectExceptionMessage('Platform "unsupported" is not supported in ai:platform:invoke command');
 
         $commandTester = new CommandTester($command);
         $commandTester->execute([
-            'platform' => 'perplexity',
-            'model' => 'sonar',
+            'platform' => 'unsupported',
+            'model' => 'some-model',
             'message' => 'Test message',
         ]);
     }