(*****************************************************************************)
(*                                                                           *)
(* Open Source License                                                       *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com>     *)
(*                                                                           *)
(* Permission is hereby granted, free of charge, to any person obtaining a   *)
(* copy of this software and associated documentation files (the "Software"),*)
(* to deal in the Software without restriction, including without limitation *)
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(* Software is furnished to do so, subject to the following conditions:      *)
(*                                                                           *)
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(* DEALINGS IN THE SOFTWARE.                                                 *)
(*                                                                           *)
(*****************************************************************************)

type t = Ipaddr.V6.t

let encoding =
  let open Data_encoding in
  def "p2p_address" ~description:"An address for locating peers."
  @@ splitted
       ~json:(conv Ipaddr.V6.to_string Ipaddr.V6.of_string_exn string)
       ~binary:(conv Ipaddr.V6.to_octets Ipaddr.V6.of_octets_exn string)

type port = int

let pp ppf addr =
  match Ipaddr.v4_of_v6 addr with
  | Some addr -> Format.fprintf ppf "%a" Ipaddr.V4.pp addr
  | None -> Format.fprintf ppf "%a" Ipaddr.V6.pp addr

let of_string_opt str =
  match Ipaddr.of_string str with
  | Ok (Ipaddr.V4 addr) -> Some (Ipaddr.v6_of_v4 addr)
  | Ok (V6 addr) -> Some addr
  | Error (`Msg _) -> None

let of_string_error_message = "P2p_addr.of_string"

let of_string_exc = Failure of_string_error_message

let of_string_exn str =
  of_string_opt str |> WithExceptions.Option.to_exn ~none:of_string_exc

let of_string str =
  of_string_opt str |> Result.of_option ~error:of_string_error_message

let to_string saddr = Format.asprintf "%a" pp saddr

let rpc_arg =
  RPC_arg.make
    ~name:"addr"
    ~descr:"A network address (ipv4 or [ipv6])."
    ~destruct:of_string
    ~construct:to_string
    ()

let () = Data_encoding.Registration.register ~pp encoding