Update: 2026-05-09 17:09:49

app/Core/AI.php

@@ -10,7 +10,7 @@ use App\Services\InvoiceExtractionService;
  */
 class AI
 {
-    private static string $baseUrl = "https://generativelanguage.googleapis.com/v1beta/models/gemini-flash-lite-latest:generateContent";
+    private static string $baseUrl = "https://generativelanguage.googleapis.com/v1beta/models/" . AIConfig::MODEL_NAME . ":generateContent";
 
     private static int $maxRetries = 3;
 
@@ -25,8 +25,7 @@ class AI
             return null;
         }
 
-        $service = new InvoiceExtractionService();
-        $prompt = $service->buildExtractionPrompt();
+        $prompt = AIConfig::getExtractionPrompt();
 
         $payload = [
             "contents" => [

app/Core/AIConfig.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Core;
+
+use App\Services\InvoiceExtractionService;
+
+class AIConfig
+{
+    /**
+     * The model name preferred by the user
+     */
+    public const MODEL_NAME = "gemini-flash-lite-latest";
+
+    /**
+     * Centralized prompt for invoice extraction
+     */
+    public static function getExtractionPrompt(): string
+    {
+        $service = new InvoiceExtractionService();
+        return $service->buildExtractionPrompt();
+    }
+}