"""
QR Code Manager Flask Application
A modern Flask web application for generating and managing QR codes with authentication
"""

import os
from dotenv import load_dotenv
from flask import Flask
from flask_cors import CORS
from flask_session import Session
from app.utils.auth import init_admin

# Load environment variables
load_dotenv()

def create_app():
    """Create and configure the Flask application"""
    app = Flask(__name__)
    
    # Configuration
    app.config['SECRET_KEY'] = os.environ.get('SECRET_KEY', 'your-secret-key-change-in-production')
    app.config['SESSION_TYPE'] = 'filesystem'
    app.config['SESSION_PERMANENT'] = False
    app.config['SESSION_USE_SIGNER'] = True
    app.config['SESSION_FILE_DIR'] = '/tmp/flask_session'  # Use /tmp for sessions
    app.config['SESSION_FILE_THRESHOLD'] = 500
    
    # Initialize CORS
    CORS(app)
    
    # Initialize session
    Session(app)
    
    # Initialize admin user
    init_admin()
    
    # Register blueprints
    from app.routes import main, api, auth
    app.register_blueprint(main.bp)
    app.register_blueprint(api.bp, url_prefix='/api')
    app.register_blueprint(auth.bp)
    
    return app