Update flask_app.py

flask_app.py

@@ -1,4 +1,4 @@
-#app.py
+# flask_app.py - English Helper Flask Application
 import os
 import io
 import json
@@ -32,22 +32,30 @@ from study_planner import study_planner
 from admin_module import admin_manager, admin_required
 
 # --- CONFIGURAÇÃO INICIAL ---
-app = Flask(__name__)
-
-# Configuration for sessions
-app.config['SECRET_KEY'] = os.environ.get('SECRET_KEY', 'dev-key-change-in-production-hf-spaces')
-app.config['SESSION_TYPE'] = 'filesystem'
-app.config['SESSION_PERMANENT'] = False
-app.config['SESSION_USE_SIGNER'] = True
-app.config['SESSION_KEY_PREFIX'] = 'englishhelper:'
-app.config['PERMANENT_SESSION_LIFETIME'] = 86400  # 24 hours
-
-Session(app)
-
-# Print session config for debugging
-print(f"Session config - SECRET_KEY length: {len(app.config['SECRET_KEY'])}")
-print(f"Session config - SESSION_TYPE: {app.config['SESSION_TYPE']}")
-print(f"Session config - Working directory: {os.getcwd()}")
+# Evitar múltiplas instâncias do Flask
+if 'app' not in globals():
+    app = Flask(__name__)
+    
+    # Configuration for sessions
+    app.config['SECRET_KEY'] = os.environ.get('SECRET_KEY', 'dev-key-change-in-production-hf-spaces')
+    app.config['SESSION_TYPE'] = 'filesystem'
+    app.config['SESSION_PERMANENT'] = False
+    app.config['SESSION_USE_SIGNER'] = True
+    app.config['SESSION_KEY_PREFIX'] = 'englishhelper:'
+    app.config['PERMANENT_SESSION_LIFETIME'] = 86400  # 24 hours
+    
+    # Configuração para HF Spaces
+    app.config['SEND_FILE_MAX_AGE_DEFAULT'] = 0  # Evitar cache de arquivos
+    app.config['TEMPLATES_AUTO_RELOAD'] = True
+    
+    Session(app)
+    
+    # Print session config for debugging
+    print(f"✅ Flask app inicializado - SECRET_KEY length: {len(app.config['SECRET_KEY'])}")
+    print(f"✅ Session config - SESSION_TYPE: {app.config['SESSION_TYPE']}")
+    print(f"✅ Working directory: {os.getcwd()}")
+else:
+    print("✅ Flask app já existe - reutilizando instância")
 
 # Ensure flask_session directory exists
 import os
@@ -1301,5 +1309,8 @@ def admin_interface():
 def root():
     return send_file('templates/index.html')
 
+# Evitar execução automática quando importado
 if __name__ == '__main__':
-    app.run(host='0.0.0.0', port=7860)
+    print("⚠️  flask_app.py executado diretamente")
+    print("💡 Use app.py para HF Spaces ou execute como módulo")
+    app.run(host='0.0.0.0', port=5000, debug=True)