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(* Open Source License                                                       *)
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(* Copyright (c) 2023 Marigold, <contact@marigold.dev>                       *)
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(** [t] is a representation of committee member signature. *)
type t

(** [encoding dac_plugin] returns the [t Data_encoding.t] given a [dac_plugin]. *)
val encoding : t Data_encoding.t

(** [make root_hash signature pkh] creates a [t]. In addition, it ensures that
    the underlying [Aggregate_signature.t] always corresponds to [Unknown]
    variant.
    
    Motivation for the [Unknown] variant:
    [Unknown] variant uses "asig" JSON prefix, whereas [Bls12_381] variant uses
    "BLsig" JSON prefix. To ensure consistent signature prefix, when data is
    exchanged accross the DAC network we use [Unknown] variant only. *)
val make :
  Dac_plugin.raw_hash ->
  Tezos_crypto.Aggregate_signature.signature ->
  Tezos_crypto.Aggregate_signature.public_key_hash ->
  t

(** [get_root_hash signature] returns a root hash of a given signature
    representation. *)
val get_root_hash : t -> Dac_plugin.raw_hash

(** [get_signature signature] returns an aggregated signature of a given
    signature representation. *)
val get_signature : t -> Tezos_crypto.Aggregate_signature.signature

(** [get_signer_pkh signature] returns a signer public key hash of a given
    signature representation. *)
val get_signer_pkh : t -> Tezos_crypto.Aggregate_signature.public_key_hash