use serde::{Deserialize, Serialize};
use std::fmt::{Display, Formatter};
use std::net::{Ipv4Addr, Ipv6Addr};

// The current version of the protocol.
// The idea here is that we add new request response types at least one version before we start
// using them.
// Also, depending on the version in the client connect message the IPR could respond with a
// matching older version.
pub use v6::request;
pub use v6::response;

pub mod codec;
pub mod v6;
pub mod v7;

// version 3: initial version
// version 4: IPv6 support
// version 5: Add severity level to info response
// version 6: Increase the available IPs
// version 7: Add signature support (for the future)
pub const CURRENT_VERSION: u8 = 6;

#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, Serialize, Deserialize)]
pub struct IpPair {
    pub ipv4: Ipv4Addr,
    pub ipv6: Ipv6Addr,
}

impl IpPair {
    pub fn new(ipv4: Ipv4Addr, ipv6: Ipv6Addr) -> Self {
        IpPair { ipv4, ipv6 }
    }
}

impl Display for IpPair {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        write!(f, "IPv4: {}, IPv6: {}", self.ipv4, self.ipv6)
    }
}

fn make_bincode_serializer() -> impl bincode::Options {
    use bincode::Options;
    bincode::DefaultOptions::new()
        .with_big_endian()
        .with_varint_encoding()
}