"""Main application entry point with Flask setup and Blueprint registration."""
import os
from flask import Flask, render_template, send_file, make_response, request
from flask_cors import CORS
from flask_socketio import SocketIO
from database import init_db, close_db
from blueprints.auth import auth_bp
from blueprints.users import users_bp
from blueprints.chat import chat_bp
from blueprints.files import files_bp
from blueprints.admin import admin_bp
from blueprints.dev import dev_bp

app = Flask(__name__)
CORS(app, supports_credentials=True)

# Configuration
app.config['DATABASE'] = '../chat.db'
app.config['SECRET_KEY'] = 'k68OAhbpLpEXn7EqiMJRV3yLf3qxrR25SY8UIGy10sKhAKzpZseZs94jVddbU6Q8XYmbiS0Q7nmeWLkb7Bwm8lwA/A29h8MsKOJayxKYq/fKkOrElUbj14LUJhSuJHA'
app.config['VERSION'] = "0.24 Modular Architecture"

socketio = SocketIO(app)
app.extensions['socketio'] = socketio

# Store connected clients for stats
connected_clients = set()
app.extensions['connected_clients'] = connected_clients


# SocketIO event handlers
@socketio.on('connect')
def handle_connect():
    """Handle client connection."""
    print(f"SocketIO connect event received from {request.sid}")
    connected_clients.add(request.sid)
    print(f"Client connected: {request.sid}")
    return True


@socketio.on('disconnect')
def handle_disconnect():
    """Handle client disconnection."""
    print(f"SocketIO disconnect event received from {request.sid}")
    connected_clients.discard(request.sid)
    print(f"Client disconnected: {request.sid}")


# Database setup
def setup_database(app):
    """Initialize database and register teardown."""
    init_db(app)
    app.teardown_appcontext(lambda error: close_db(app, error))


# Register Blueprints
def register_blueprints(app):
    """Register all application blueprints."""
    app.register_blueprint(auth_bp)
    app.register_blueprint(users_bp)
    app.register_blueprint(chat_bp)
    app.register_blueprint(files_bp)
    app.register_blueprint(admin_bp)
    app.register_blueprint(dev_bp)


# Template routes
@app.route('/')
def index():
    """Main index page."""
    return render_template('index.html')


@app.route('/sw.js')
def service_worker():
    """Service worker script."""
    with open(os.path.join(current_app.root_path, 'sw.js'), 'r') as f:
        resp = make_response(f.read())
    resp.headers['Content-Type'] = 'application/javascript'
    return resp


# Application initialization
def create_app():
    """Create and configure the Flask application."""
    setup_database(app)
    register_blueprints(app)
    return app


create_app()


if __name__ == '__main__':
    socketio.run(app, debug=True, host='0.0.0.0', port=5000)