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#[cfg(test)]
mod relayaddr_test;

use stun::attributes::*;
use stun::message::*;
use stun::xoraddr::*;

use util::Error;

use std::fmt;
use std::net::{IpAddr, Ipv4Addr};

// RelayedAddress implements XOR-RELAYED-ADDRESS attribute.
//
// It specifies the address and port that the server allocated to the
// client. It is encoded in the same way as XOR-MAPPED-ADDRESS.
//
// RFC 5766 Section 14.5
#[derive(PartialEq, Eq, Debug)]
pub struct RelayedAddress {
    pub ip: IpAddr,
    pub port: u16,
}

impl Default for RelayedAddress {
    fn default() -> Self {
        RelayedAddress {
            ip: IpAddr::V4(Ipv4Addr::from(0)),
            port: 0,
        }
    }
}

impl fmt::Display for RelayedAddress {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self.ip {
            IpAddr::V4(_) => write!(f, "{}:{}", self.ip, self.port),
            IpAddr::V6(_) => write!(f, "[{}]:{}", self.ip, self.port),
        }
    }
}

impl Setter for RelayedAddress {
    // AddTo adds XOR-PEER-ADDRESS to message.
    fn add_to(&self, m: &mut Message) -> Result<(), Error> {
        let a = XORMappedAddress {
            ip: self.ip,
            port: self.port,
        };
        a.add_to_as(m, ATTR_XOR_RELAYED_ADDRESS)
    }
}

impl Getter for RelayedAddress {
    // GetFrom decodes XOR-PEER-ADDRESS from message.
    fn get_from(&mut self, m: &Message) -> Result<(), Error> {
        let mut a = XORMappedAddress::default();
        a.get_from_as(m, ATTR_XOR_RELAYED_ADDRESS)?;
        self.ip = a.ip;
        self.port = a.port;
        Ok(())
    }
}

// XORRelayedAddress implements XOR-RELAYED-ADDRESS attribute.
//
// It specifies the address and port that the server allocated to the
// client. It is encoded in the same way as XOR-MAPPED-ADDRESS.
//
// RFC 5766 Section 14.5
pub type XORRelayedAddress = RelayedAddress;