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(* Copyright (c) 2021 Nomadic Labs <contact@nomadic-labs.com>                *)
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open Alpha_context

type error +=
  | (* `Permanent *)
      Insufficient_attestation_power of {
      attestation_power : int;
      consensus_threshold : int;
    }

type ordered_slots = private {
  delegate : Signature.public_key_hash;
  consensus_key : Signature.public_key_hash;
  slots : Slot.t list;
}

(** For a given level computes who has the right to include an attestation in
   the next block.

   @return map from delegates with such rights to their attesting slots, in
   increasing order.

   This function is only used by the 'validators' RPC.  *)
val attesting_rights :
  context ->
  Level.t ->
  (context * ordered_slots Signature.Public_key_hash.Map.t) tzresult Lwt.t

(** Computes attesting rights for a given level.

   @return  map from allocated first slots to their owner's public key, public key
   hash, and attesting power. *)
val attesting_rights_by_first_slot :
  context ->
  Level.t ->
  (context * (Consensus_key.pk * int) Slot.Map.t) tzresult Lwt.t

(** Computes the bonus baking reward depending on the attestation power. *)
val bonus_baking_reward : context -> attestation_power:int -> Tez.t tzresult