Ollama tool choice support

Author: sixlive

Diff for: src/Providers/Ollama/Ollama.php

@@ -11,6 +11,7 @@
 use EchoLabs\Prism\Requests\TextRequest;
 use EchoLabs\Prism\ValueObjects\ToolCall;
 use EchoLabs\Prism\ValueObjects\Usage;
+use InvalidArgumentException;
 use Throwable;
 
 class Ollama implements Provider
@@ -24,6 +25,8 @@ public function __construct(
     public function text(TextRequest $request): ProviderResponse
     {
         try {
+            $this->validateTextRequest($request);
+
             $response = $this
                 ->client($request->clientOptions)
                 ->messages(
@@ -68,6 +71,13 @@ public function text(TextRequest $request): ProviderResponse
         );
     }
 
+    protected function validateTextRequest(TextRequest $textRequest): void
+    {
+        if ($textRequest->toolChoice) {
+            throw new InvalidArgumentException('Invalid tool choice');
+        }
+    }
+
     /**
      * @param  array<int, array<string, mixed>>  $toolCalls
      * @return array<int, ToolCall>

Diff for: tests/Providers/Ollama/OllamaTextTest.php

@@ -5,6 +5,7 @@
 namespace Tests\Providers\Ollama;
 
 use EchoLabs\Prism\Enums\Provider;
+use EchoLabs\Prism\Exceptions\PrismException;
 use EchoLabs\Prism\Facades\Tool;
 use EchoLabs\Prism\Prism;
 use EchoLabs\Prism\ValueObjects\Messages\Support\Image;
@@ -102,6 +103,17 @@
             "Today's Tigers game in Detroit starts at 3 PM. The current temperature is 75°F with clear skies, so you shouldn't need a coat. Enjoy the game!"
         );
     });
+
+    it('throws an exception for ToolChoice', function (): void {
+        $this->expectException(PrismException::class);
+        $this->expectExceptionMessage('Invalid tool choice');
+
+        Prism::text()
+            ->using(Provider::Ollama, 'qwen2.5:14b')
+            ->withPrompt('Who are you?')
+            ->withToolChoice('weather')
+            ->generate();
+    });
 });
 
 describe('Image support', function (): void {