initial login logic

app.py

@@ -0,0 +1,37 @@
+from flask import Flask
+from flask_login import LoginManager
+
+from config import Config
+from models import db, User
+from routes import main
+
+
+def create_app(config_class=Config):
+    app = Flask(__name__)
+    app.config.from_object(config_class)
+
+    # Initialize extensions
+    db.init_app(app)
+
+    login_manager = LoginManager()
+    login_manager.init_app(app)
+    login_manager.login_view = 'main.signup'
+    login_manager.login_message = 'Please sign up or log in to access this page.'
+
+    @login_manager.user_loader
+    def load_user(user_id):
+        return User.query.get(int(user_id))
+
+    # Register blueprints
+    app.register_blueprint(main)
+
+    # Create database tables
+    with app.app_context():
+        db.create_all()
+
+    return app
+
+
+if __name__ == '__main__':
+    app = create_app()
+    app.run(debug=True)