from flask import Flask
import os
from app.config import Config

def create_app(config_class=Config):
    app = Flask(__name__)
    app.config.from_object(config_class)
    
    # Ensure upload directory exists
    os.makedirs(app.config['UPLOAD_FOLDER'], exist_ok=True)
    
    # Create empty URI map file if it doesn't exist
    uri_map_path = os.path.join(app.config['UPLOAD_FOLDER'], 'uri_map.json')
    if not os.path.exists(uri_map_path):
        with open(uri_map_path, 'w') as f:
            f.write('{}')
    
    # Register blueprints
    from app.routes.main import main_bp
    app.register_blueprint(main_bp)
    
    return app