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(* Open Source License                                                       *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com>     *)
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open Alpha_context

module S = struct
  let path = RPC_path.(open_root / "votes")

  let ballots =
    RPC_service.get_service
      ~description:"Sum of ballots casted so far during a voting period."
      ~query:RPC_query.empty
      ~output:Vote.ballots_encoding
      RPC_path.(path / "ballots")

  let ballot_list =
    RPC_service.get_service
      ~description:"Ballots casted so far during a voting period."
      ~query:RPC_query.empty
      ~output:
        Data_encoding.(
          list
            (obj2
               (req "pkh" Signature.Public_key_hash.encoding)
               (req "ballot" Vote.ballot_encoding)))
      RPC_path.(path / "ballot_list")

  let current_period =
    RPC_service.get_service
      ~description:
        "Returns the voting period (index, kind, starting position) and \
         related information (position, remaining) of the interrogated block."
      ~query:RPC_query.empty
      ~output:Voting_period.info_encoding
      RPC_path.(path / "current_period")

  let successor_period =
    RPC_service.get_service
      ~description:
        "Returns the voting period (index, kind, starting position) and \
         related information (position, remaining) of the next block."
      ~query:RPC_query.empty
      ~output:Voting_period.info_encoding
      RPC_path.(path / "successor_period")

  let current_period_kind_deprecated =
    RPC_service.get_service
      ~description:
        "Current period kind. This RPC is DEPRECATED: use \
         `..<block_id>/votes/current_period` RPC instead."
      ~query:RPC_query.empty
      ~output:Voting_period.kind_encoding
      RPC_path.(path / "current_period_kind")

  let current_quorum =
    RPC_service.get_service
      ~description:"Current expected quorum."
      ~query:RPC_query.empty
      ~output:Data_encoding.int32
      RPC_path.(path / "current_quorum")

  let listings =
    RPC_service.get_service
      ~description:
        "List of delegates with their voting weight, in number of rolls."
      ~query:RPC_query.empty
      ~output:Vote.listings_encoding
      RPC_path.(path / "listings")

  let proposals =
    RPC_service.get_service
      ~description:"List of proposals with number of supporters."
      ~query:RPC_query.empty
      ~output:(Protocol_hash.Map.encoding Data_encoding.int32)
      RPC_path.(path / "proposals")

  let current_proposal =
    RPC_service.get_service
      ~description:"Current proposal under evaluation."
      ~query:RPC_query.empty
      ~output:(Data_encoding.option Protocol_hash.encoding)
      RPC_path.(path / "current_proposal")

  let total_voting_power =
    RPC_service.get_service
      ~description:
        "Total number of rolls for the delegates in the voting listings."
      ~query:RPC_query.empty
      ~output:Data_encoding.int32
      RPC_path.(path / "total_voting_power")
end

let register () =
  let open Services_registration in
  register0 S.ballots (fun ctxt () () -> Vote.get_ballots ctxt) ;
  register0 S.ballot_list (fun ctxt () () -> Vote.get_ballot_list ctxt >|= ok) ;
  register0 S.current_period (fun ctxt () () ->
      Voting_period.get_rpc_fixed_current_info ctxt) ;
  register0 S.successor_period (fun ctxt () () ->
      Voting_period.get_rpc_fixed_succ_info ctxt) ;
  register0 S.current_period_kind_deprecated (fun ctxt () () ->
      Voting_period.get_current_info ctxt
      >|=? fun {voting_period; _} -> voting_period.kind) ;
  register0 S.current_quorum (fun ctxt () () -> Vote.get_current_quorum ctxt) ;
  register0 S.proposals (fun ctxt () () -> Vote.get_proposals ctxt) ;
  register0 S.listings (fun ctxt () () -> Vote.get_listings ctxt >|= ok) ;
  register0 S.current_proposal (fun ctxt () () ->
      Vote.find_current_proposal ctxt) ;
  register0 S.total_voting_power (fun ctxt () () ->
      Vote.get_total_voting_power_free ctxt)

let ballots ctxt block = RPC_context.make_call0 S.ballots ctxt block () ()

let ballot_list ctxt block =
  RPC_context.make_call0 S.ballot_list ctxt block () ()

let current_period ctxt block =
  RPC_context.make_call0 S.current_period ctxt block () ()

let successor_period ctxt block =
  RPC_context.make_call0 S.successor_period ctxt block () ()

let current_quorum ctxt block =
  RPC_context.make_call0 S.current_quorum ctxt block () ()

let listings ctxt block = RPC_context.make_call0 S.listings ctxt block () ()

let proposals ctxt block = RPC_context.make_call0 S.proposals ctxt block () ()

let current_proposal ctxt block =
  RPC_context.make_call0 S.current_proposal ctxt block () ()

let total_voting_power ctxt block =
  RPC_context.make_call0 S.total_voting_power ctxt block () ()