elseware/src/common/serverstate.rs

use libpso::PacketParseError;
use libpso::crypto::PSOCipher;

#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
pub struct ClientId(pub usize);

pub enum OnConnect<S: SendServerPacket> {
    Packet(S),
    Cipher((Box<dyn PSOCipher + Send>, Box<dyn PSOCipher + Send>)),
}

pub trait RecvServerPacket: Sized {
    fn from_bytes(data: &[u8]) -> Result<Self, PacketParseError>;
}

pub trait SendServerPacket: Sized {
    fn as_bytes(&self) -> Vec<u8>;
}

pub trait ServerState {
    type SendPacket: SendServerPacket;
    type RecvPacket: RecvServerPacket;
    type PacketError;
    
    fn on_connect(&mut self, id: ClientId) -> Vec<OnConnect<Self::SendPacket>>;
    fn handle(&mut self, id: ClientId, pkt: &Self::RecvPacket)
              -> Result<Box<dyn Iterator<Item = (ClientId, Self::SendPacket)>>, Self::PacketError>;
}