#![allow(unused_imports)]

#![deny(bare_trait_objects)]

use getopts::Options;

use log::*;

use mio::{net::*, *};

use std::{env, str::FromStr as _, time::Duration};

mod protocol;

mod server;

mod utils;

use crate::server::network::{NetworkLayer, NetworkLayerBuilder};

const PROGRAM_NAME: &'_ str = "Hedgewars Game Server";

fn main() {

    env_logger::init();

    info!("Hedgewars game server, protocol {}", utils::SERVER_VERSION);

    let args: Vec<String> = env::args().collect();

    let mut opts = Options::new();

    opts.optopt("p", "port", "port - defaults to 46631", "PORT");

    opts.optflag("h", "help", "help");

    let matches = match opts.parse(&args[1..]) {

        Ok(m) => m,

        Err(e) => {

            println!("{}\n{}", e, opts.short_usage(""));

            return;

        }

    };

    if matches.opt_present("h") {

        println!("{}", opts.usage(PROGRAM_NAME));

        return;

    }

    let port = matches

        .opt_str("p")

        .and_then(|s| u16::from_str(&s).ok())

        .unwrap_or(46631);

    let address = format!("0.0.0.0:{}", port).parse().unwrap();

    let listener = TcpListener::bind(&address).unwrap();

    let poll = Poll::new().unwrap();

    let mut hw_builder = NetworkLayerBuilder::default().with_listener(listener);

    #[cfg(feature = "tls-connections")]

    {

        let address = format!("0.0.0.0:{}", port + 1).parse().unwrap();

        hw_builder = hw_builder.with_secure_listener(TcpListener::bind(&address).unwrap());

    }

    let mut hw_network = hw_builder.build();

    hw_network.register(&poll).unwrap();

    let mut events = Events::with_capacity(1024);

    loop {

        let timeout = if hw_network.has_pending_operations() {

            Some(Duration::from_millis(1))

        } else {

            None

        };

        poll.poll(&mut events, timeout).unwrap();

        for event in events.iter() {

            if event.readiness() & Ready::readable() == Ready::readable() {

                match event.token() {

                    token @ utils::SERVER_TOKEN | token @ utils::SECURE_SERVER_TOKEN => {

                        hw_network.accept_client(&poll, token).unwrap()

                    }

                    utils::TIMER_TOKEN => hw_network.handle_timeout(&poll).unwrap(),

                    #[cfg(feature = "official-server")]

                    utils::IO_TOKEN => hw_network.handle_io_result(),

                    Token(tok) => hw_network.client_readable(&poll, tok).unwrap(),

                }

            }

            if event.readiness() & Ready::writable() == Ready::writable() {

                match event.token() {

                    utils::SERVER_TOKEN | utils::TIMER_TOKEN | utils::IO_TOKEN => unreachable!(),

                    Token(tok) => hw_network.client_writable(&poll, tok).unwrap(),

                }

            }

            //            if event.kind().is_hup() || event.kind().is_error() {

            //                match event.token() {

            //                    utils::SERVER => unreachable!(),

            //                    Token(tok) => server.client_error(&poll, tok).unwrap(),

            //                }

            //            }

        }

        hw_network.on_idle(&poll).unwrap();

    }

}