import os
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from dotenv import load_dotenv

# Load environment variables
load_dotenv()

# Initialize SQLAlchemy
db = SQLAlchemy()

def create_app():
    app = Flask(__name__, instance_relative_config=True)
    
    # Configure the app
    app.config.from_mapping(
        SECRET_KEY=os.environ.get('SECRET_KEY', 'dev'),
        SQLALCHEMY_DATABASE_URI=f"sqlite:///{os.path.join(app.instance_path, 'game_tracker.sqlite')}",
        SQLALCHEMY_TRACK_MODIFICATIONS=False,
    )
    
    # Ensure the instance folder exists
    try:
        os.makedirs(app.instance_path)
    except OSError:
        pass
    
    # Initialize database with app
    db.init_app(app)
    
    # Import and register blueprints
    from .routes import main_bp
    app.register_blueprint(main_bp)
    
    # Create database tables
    with app.app_context():
        db.create_all()
    
    return app