use mio;

use crate::{

    server::{

        server::HWServer,

        coretypes::ClientId,

        actions::{Action, Action::*}

    },

    protocol::messages::{

        HWProtocolMessage, HWServerMessage::*

    },

    utils::is_name_illegal

};

pub fn handle(server: & mut HWServer, client_id: ClientId, message: HWProtocolMessage) {

    match message {

        HWProtocolMessage::Nick(nick) => {

            let client = &mut server.clients[client_id];

            debug!("{} {}", nick, is_name_illegal(&nick));

            let actions = if client.room_id != None {

                unreachable!()

            }

            else if !client.nick.is_empty() {

                vec![ProtocolError("Nickname already provided.".to_string())]

            }

            else if     is_name_illegal(&nick) {

                vec![ByeClient("Illegal nickname! Nicknames must be between 1-40 characters long, must not have a trailing or leading space and must not have any of these characters: $()*+?[]^{|}".to_string())]

            }

            else {

                client.nick = nick.clone();

                vec![Nick(nick).send_self().action(),

                     CheckRegistered]

            };

            server.react(client_id, actions);

        },

        HWProtocolMessage::Proto(proto) => {

            let client = &mut server.clients[client_id];

            let actions = if client.protocol_number != 0 {

                vec![ProtocolError("Protocol already known.".to_string())]

            }

            else if proto == 0 {

                vec![ProtocolError("Bad number.".to_string())]

            }

            else {

                client.protocol_number = proto;

                vec![Proto(proto).send_self().action(),

                     CheckRegistered]

            };

            server.react(client_id, actions);

        },

        _ => warn!("Incorrect command in logging-in state"),

    }

}