"""Tornado application entry point and route configuration."""

import os

import click
import tornado.ioloop
import tornado.web

from db import get_engine, get_session_factory, init_db
from handlers.main import MainHandler
from handlers.game import GameHandler
from handlers.howtoplay import HowToPlayHandler
from handlers.about import AboutHandler
from handlers.api import (
    CategoriesHandler,
    NewGameHandler,
    GameStateHandler,
    GuessHandler,
)

BASE_DIR = os.path.dirname(os.path.abspath(__file__))


def make_app(session_factory=None):
    """Create and configure the Tornado application.

    Args:
        session_factory: SQLAlchemy session factory. If None, API
            endpoints that require a database will not work.

    Returns:
        A configured ``tornado.web.Application`` instance.
    """
    return tornado.web.Application(
        [
            (r"/", MainHandler),
            (r"/game", GameHandler),
            (r"/howtoplay", HowToPlayHandler),
            (r"/about", AboutHandler),
            (r"/api/categories", CategoriesHandler),
            (r"/api/game/new", NewGameHandler),
            (r"/api/game/([^/]+)", GameStateHandler),
            (r"/api/game/([^/]+)/guess", GuessHandler),
        ],
        template_path=os.path.join(BASE_DIR, "templates"),
        static_path=os.path.join(BASE_DIR, "static"),
        session_factory=session_factory,
        debug=True,
    )


@click.command()
@click.option("--port", default=8888, type=int, help="Port to listen on.")
def main(port):
    """Start the web server."""
    engine = get_engine()
    init_db(engine)
    session_factory = get_session_factory(engine)
    app = make_app(session_factory=session_factory)
    app.listen(port)
    print(f"Server started at http://localhost:{port}")
    tornado.ioloop.IOLoop.current().start()


if __name__ == "__main__":
    main()