use std::{net::Ipv4Addr, sync::Arc};

use async_trait::async_trait;
use tokio_util::bytes::Bytes;

use crate::common::{error::Error, PeerId};

#[async_trait]
pub trait RouteInterface {
    async fn list_peers(&self) -> Vec<PeerId>;
    async fn send_route_packet(
        &self,
        msg: Bytes,
        route_id: u8,
        dst_peer_id: PeerId,
    ) -> Result<(), Error>;
    fn my_peer_id(&self) -> PeerId;
}

pub type RouteInterfaceBox = Box<dyn RouteInterface + Send + Sync>;

#[async_trait]
#[auto_impl::auto_impl(Box, Arc)]
pub trait Route {
    async fn open(&self, interface: RouteInterfaceBox) -> Result<u8, ()>;
    async fn close(&self);

    async fn get_next_hop(&self, peer_id: PeerId) -> Option<PeerId>;
    async fn list_routes(&self) -> Vec<crate::rpc::Route>;

    async fn get_peer_id_by_ipv4(&self, _ipv4: &Ipv4Addr) -> Option<PeerId> {
        None
    }
}

pub type ArcRoute = Arc<Box<dyn Route + Send + Sync>>;