// Copyright 2016 MaidSafe.net limited.
//
// This SAFE Network Software is licensed to you under (1) the MaidSafe.net Commercial License,
// version 1.0 or later, or (2) The General Public License (GPL), version 3, depending on which
// licence you accepted on initial access to the Software (the "Licences").
//
// By contributing code to the SAFE Network Software, or to this project generally, you agree to be
// bound by the terms of the MaidSafe Contributor Agreement, version 1.0.  This, along with the
// Licenses can be found in the root directory of this project at LICENSE, COPYING and CONTRIBUTOR.
//
// Unless required by applicable law or agreed to in writing, the SAFE Network Software distributed
// under the GPL Licence is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.
//
// Please review the Licences for the specific language governing permissions and limitations
// relating to use of the SAFE Network Software.

use rand::{Rand, Rng};
use std::fmt;
use sodiumoxide::crypto::box_;
use sodiumoxide::crypto::box_::PublicKey;

/// An identifier of a peer node.
#[derive(PartialEq, Eq, Clone, Copy, Ord, PartialOrd, Hash, RustcEncodable, RustcDecodable)]
pub struct PeerId(PublicKey);

impl fmt::Debug for PeerId {
    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
        write!(formatter,
               "PeerId({:02x}{:02x}..)",
               (self.0).0[0],
               (self.0).0[1])
    }
}

impl fmt::Display for PeerId {
    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
        write!(formatter, "{:02x}{:02x}..", (self.0).0[0], (self.0).0[1])
    }
}

pub fn new_id(pub_key: PublicKey) -> PeerId {
    PeerId(pub_key)
}

impl Rand for PeerId {
    fn rand<R: Rng>(_rng: &mut R) -> PeerId {
        PeerId(box_::gen_keypair().0)
    }
}
