p64

src/Config/ChatMessagesConfig.php

@@ -142,6 +142,20 @@ final class ChatMessagesConfig
         return $this->string('sse.storage.write_failed');
     }
 
+    /**
+     * @return array<string, mixed>
+     */
+    public function getFrontendMessages(): array
+    {
+        $messages = $this->value('frontend');
+
+        if (is_array($messages)) {
+            return $messages;
+        }
+
+        throw new \InvalidArgumentException('RetrieX chat messages config key "frontend" must be an array.');
+    }
+
     /**
      * @return array<string, mixed>
      */
@@ -165,6 +179,14 @@ final class ChatMessagesConfig
             }
         }
 
+        foreach ($this->requiredStringListPaths() as $path) {
+            try {
+                $this->stringList($path);
+            } catch (\InvalidArgumentException $e) {
+                $errors[] = $e->getMessage();
+            }
+        }
+
         return [
             'status' => $errors === [] ? 'OK' : 'ERROR',
             'errors' => $errors,
@@ -202,6 +224,43 @@ final class ChatMessagesConfig
             'sse.claim.missing',
             'sse.storage.directory_create_failed',
             'sse.storage.write_failed',
+            'frontend.document.title',
+            'frontend.ui.header_title',
+            'frontend.ui.footer_disclaimer',
+            'frontend.ui.buttons.clear',
+            'frontend.ui.buttons.send',
+            'frontend.ui.buttons.abort',
+            'frontend.ui.options.aria_label',
+            'frontend.ui.options.status_info',
+            'frontend.ui.input.prompt_placeholder',
+            'frontend.assistant.loader',
+            'frontend.assistant.aborted',
+            'frontend.assistant.history_cleared',
+            'frontend.source_chips.live_shop_data',
+            'frontend.run_meta.completed_title',
+            'frontend.run_meta.interrupted_title',
+            'frontend.run_meta.completed_status',
+            'frontend.run_meta.interrupted_status',
+            'frontend.run_meta.completed_empty_source',
+            'frontend.run_meta.interrupted_empty_source',
+            'frontend.run_meta.pending_source_marker',
+            'frontend.stream.incomplete',
+            'frontend.stream.job_not_found_retry',
+            'frontend.stream.failed_retry',
+            'frontend.stream.interrupted_retry',
+            'frontend.stream.missing_retry',
+            'frontend.stream.stale_retry',
+            'frontend.stream.connection_interrupted_retry',
+        ];
+    }
+
+    /**
+     * @return list<string>
+     */
+    private function requiredStringListPaths(): array
+    {
+        return [
+            'frontend.guards.no_concrete_shop_response_markers',
         ];
     }
 
@@ -237,6 +296,34 @@ final class ChatMessagesConfig
         return '';
     }
 
+    /**
+     * @return list<string>
+     */
+    private function stringList(string $path): array
+    {
+        $value = $this->value($path);
+
+        if (!is_array($value)) {
+            throw new \InvalidArgumentException(sprintf('RetrieX chat messages config key "%s" must be a list of non-empty strings.', $path));
+        }
+
+        $items = [];
+
+        foreach ($value as $item) {
+            if (!is_string($item) || trim($item) === '') {
+                throw new \InvalidArgumentException(sprintf('RetrieX chat messages config key "%s" must contain only non-empty strings.', $path));
+            }
+
+            $items[] = $item;
+        }
+
+        if ($items === []) {
+            throw new \InvalidArgumentException(sprintf('RetrieX chat messages config key "%s" must not be empty.', $path));
+        }
+
+        return $items;
+    }
+
     private function string(string $path): string
     {
         $value = $this->value($path);

src/Controller/ChatMessagesController.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Controller;
+
+use App\Config\ChatMessagesConfig;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\Routing\Annotation\Route;
+
+final readonly class ChatMessagesController
+{
+    public function __construct(private ChatMessagesConfig $chatMessages)
+    {
+    }
+
+    #[Route('/chat-messages/frontend', name: 'chat_messages_frontend', methods: ['GET'])]
+    public function frontend(): JsonResponse
+    {
+        $response = new JsonResponse($this->chatMessages->getFrontendMessages());
+        $response->headers->set('Cache-Control', 'no-store, no-cache, must-revalidate, max-age=0');
+        $response->headers->set('Pragma', 'no-cache');
+        $response->headers->set('Expires', '0');
+
+        return $response;
+    }
+}