Fix API key loading and update Gemini model name

.env.example

@@ -1 +1,10 @@
+# Google Gemini API Key
 GEMINI_API_KEY=your_api_key_here
+
+# Flask Configuration
+FLASK_APP=run.py
+FLASK_ENV=development
+SECRET_KEY=dev_secret_key
+
+# Database
+# DATABASE_URL=postgresql://user:password@localhost:5432/agrisensa

app/services/chatbot_service.py

@@ -14,8 +14,8 @@ class ChatbotService:
         self.init_error = None
         try:
             genai.configure(api_key=self.API_KEY)
-            # Use a model explicitly found in the list_models output
-            self.model = genai.GenerativeModel('gemini-2.0-flash-lite-preview')
+            # Use a stable model
+            self.model = genai.GenerativeModel('gemini-flash-latest')
             self.chat = self.model.start_chat(history=[])
             
             # System prompt to guide the AI

list_models.py

@@ -1,6 +1,10 @@
 import google.generativeai as genai
+import os
+from dotenv import load_dotenv
 
-API_KEY = "AIzaSyBsO07f4MK3Sg7EPynrFmrriZgScmFBiQU"
+load_dotenv()
+
+API_KEY = os.getenv("GEMINI_API_KEY")
 genai.configure(api_key=API_KEY)
 
 try:

run.py

@@ -1,3 +1,9 @@
+from dotenv import load_dotenv
+import os
+
+# Load environment variables from .env file
+load_dotenv()
+
 from app import create_app
 
 app = create_app()