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(* Open Source License                                                       *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com>     *)
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(* Tezos Protocol Implementation - Low level Repr. of Managers' keys *)

type manager_key =
  | Hash of Signature.Public_key_hash.t
  | Public_key of Signature.Public_key.t

type t = manager_key

open Data_encoding

let hash_case tag =
  case tag
    ~title:"Public_key_hash"
    Signature.Public_key_hash.encoding
    (function
      | Hash hash -> Some hash
      | _ -> None)
    (fun hash -> Hash hash)

let pubkey_case tag =
  case tag
    ~title:"Public_key"
    Signature.Public_key.encoding
    (function
      | Public_key hash -> Some hash
      | _ -> None)
    (fun hash -> Public_key hash)


let encoding =
  union [
    hash_case (Tag 0) ;
    pubkey_case (Tag 1) ;
  ]