LLama prompt

src/Model/Language/Llama.php

@@ -5,7 +5,10 @@
 namespace PhpLlm\LlmChain\Model\Language;
 
 use PhpLlm\LlmChain\LanguageModel;
+use PhpLlm\LlmChain\Message\AssistantMessage;
 use PhpLlm\LlmChain\Message\MessageBag;
+use PhpLlm\LlmChain\Message\MessageInterface;
+use PhpLlm\LlmChain\Message\UserMessage;
 use PhpLlm\LlmChain\Platform\Ollama;
 use PhpLlm\LlmChain\Platform\Replicate;
 use PhpLlm\LlmChain\Response\TextResponse;
@@ -24,12 +27,32 @@
 
         $response = $this->platform->request('meta/meta-llama-3.1-405b-instruct', $endpoint, [
             'system' => $systemMessage?->content,
-            'prompt' => $messages->withoutSystemMessage()->getIterator()->current()->content[0]->text, // @phpstan-ignore-line TODO: Multiple messages
+            'prompt' => self::convertToPrompt($messages->withoutSystemMessage()),
         ]);
 
         return new TextResponse(implode('', $response['output']));
     }
 
+    private static function convertToPrompt(MessageBag $messageBag): string
+    {
+        $messages = [];
+
+        /** @var MessageInterface $message */
+        foreach ($messageBag->getIterator() as $message) {
+            if ($message instanceof UserMessage) {
+                $content = $message->content[0]->text;
+            } elseif ($message instanceof AssistantMessage && null !== $message->content) {
+                $content = $message->content;
+            } else {
+                continue;
+            }
+
+            $messages[] = sprintf('%s: %s', ucfirst($message->getRole()->value), $content);
+        }
+
+        return implode(PHP_EOL, $messages);
+    }
+
     public function supportsToolCalling(): bool
     {
         return false; // it does, but implementation here is still open.

tests/Fixture/StructuredOutput/MathReasoning.php

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpLlm\LlmChain\Tests\Fixture\StructuredOutput;
+
+final class MathReasoning
+{
+    /**
+     * @param Step[] $steps
+     */
+    public function __construct(
+        public array $steps,
+        public string $finalAnswer,
+    ) {
+    }
+}

tests/StructuredOutput/Data/Step.php → tests/Fixture/StructuredOutput/Step.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\Tests\StructuredOutput\Data;
+namespace PhpLlm\LlmChain\Tests\Fixture\StructuredOutput;
 
 final class Step
 {

tests/StructuredOutput/Data/User.php → tests/Fixture/StructuredOutput/User.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace PhpLlm\LlmChain\Tests\StructuredOutput\Data;
+namespace PhpLlm\LlmChain\Tests\Fixture\StructuredOutput;
 
 final class User
 {