fix: various fixes for bundle release 0.3

src/Chain.php

@@ -13,15 +13,27 @@
 
 final readonly class Chain
 {
+    /**
+     * @var InputProcessor[]
+     */
+    private array $inputProcessor;
+
+    /**
+     * @var OutputProcessor[]
+     */
+    private array $outputProcessor;
+
     /**
      * @param InputProcessor[]  $inputProcessor
      * @param OutputProcessor[] $outputProcessor
      */
     public function __construct(
         private LanguageModel $llm,
-        private array $inputProcessor = [],
-        private array $outputProcessor = [],
+        iterable $inputProcessor = [],
+        iterable $outputProcessor = [],
     ) {
+        $this->inputProcessor = $inputProcessor instanceof \Traversable ? iterator_to_array($inputProcessor) : $inputProcessor;
+        $this->outputProcessor = $outputProcessor instanceof \Traversable ? iterator_to_array($outputProcessor) : $outputProcessor;
     }
 
     /**

src/StructuredOutput/ChainProcessor.php

@@ -23,11 +23,16 @@ public function __construct(
 
     public function processInput(Input $input): void
     {
+        $options = $input->getOptions();
+
+        if (!isset($options['output_structure'])) {
+            return;
+        }
+
         if (!$input->llm->supportsStructuredOutput()) {
             throw MissingModelSupport::forStructuredOutput($input->llm::class);
         }
 
-        $options = $input->getOptions();
         $options['response_format'] = $this->responseFormatFactory->create($options['output_structure']);
 
         $this->outputStructure = $options['output_structure'];
@@ -36,8 +41,14 @@ public function processInput(Input $input): void
         $input->setOptions($options);
     }
 
-    public function processOutput(Output $output): object
+    public function processOutput(Output $output): ?object
     {
+        $options = $output->options;
+
+        if (!isset($options['output_structure'])) {
+            return null;
+        }
+
         return $this->serializer->deserialize($output->response->getContent(), $this->outputStructure, 'json');
     }
 }

src/ToolBox/ChainProcessor.php

@@ -14,7 +14,7 @@
 final readonly class ChainProcessor implements InputProcessor, OutputProcessor
 {
     public function __construct(
-        private ToolBox $toolBox,
+        private ToolBoxInterface $toolBox,
     ) {
     }