use slab;

use mio::tcp::*;

use mio::*;

use std::io::Write;

use std::io;

use utils;

use server::client::HWClient;

type Slab<T> = slab::Slab<T, Token>;

pub struct HWServer {

    listener: TcpListener,

    clients: Slab<HWClient>,

    rooms: Slab<HWRoom>

}

impl HWServer {

    pub fn new(listener: TcpListener, clients_limit: usize, rooms_limit: usize) -> HWServer {

        HWServer {

            listener: listener,

            clients: Slab::with_capacity(clients_limit),

            rooms: Slab::with_capacity(rooms_limit),

        }

    }

    pub fn register(&self, poll: &Poll) -> io::Result<()> {

        poll.register(&self.listener, utils::SERVER, Ready::readable(),

                      PollOpt::edge())

    }

    pub fn accept(&mut self, poll: &Poll) -> io::Result<()> {

        let (sock, addr) = self.listener.accept()?;

        let client = HWClient::new(sock);

        let token = self.clients.insert(client)

            .ok().expect("could not add connection to slab");

        self.clients[token].register(poll, token);

        Ok(())

    }

    pub fn client_readable(&mut self, poll: &Poll,

                           token: Token) -> io::Result<()> {

        self.clients[token].readable(poll)

    }

    pub fn client_writable(&mut self, poll: &Poll,

                           token: Token) -> io::Result<()> {

        self.clients[token].writable(poll)

    }

}

struct HWRoom {

    name: String

}