(*****************************************************************************)
(*                                                                           *)
(* 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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type t = int32

type voting_period = t

include (Compare.Int32 : Compare.S with type t := t)

let encoding = Data_encoding.int32

let pp ppf level = Format.fprintf ppf "%ld" level

let rpc_arg =
  let construct voting_period = Int32.to_string voting_period in
  let destruct str =
    match Int32.of_string str with
    | exception _ ->
        Error "Cannot parse voting period"
    | voting_period ->
        Ok voting_period
  in
  RPC_arg.make
    ~descr:"A voting period"
    ~name:"voting_period"
    ~construct
    ~destruct
    ()

let root = 0l

let succ = Int32.succ

let to_int32 l = l

let of_int32_exn l =
  if Compare.Int32.(l >= 0l) then l
  else invalid_arg "Voting_period_repr.of_int32"

type kind = Proposal | Testing_vote | Testing | Promotion_vote

let kind_encoding =
  let open Data_encoding in
  union
    ~tag_size:`Uint8
    [ case
        (Tag 0)
        ~title:"Proposal"
        (constant "proposal")
        (function Proposal -> Some () | _ -> None)
        (fun () -> Proposal);
      case
        (Tag 1)
        ~title:"Testing_vote"
        (constant "testing_vote")
        (function Testing_vote -> Some () | _ -> None)
        (fun () -> Testing_vote);
      case
        (Tag 2)
        ~title:"Testing"
        (constant "testing")
        (function Testing -> Some () | _ -> None)
        (fun () -> Testing);
      case
        (Tag 3)
        ~title:"Promotion_vote"
        (constant "promotion_vote")
        (function Promotion_vote -> Some () | _ -> None)
        (fun () -> Promotion_vote) ]