%% -*- mode: erlang; tab-width: 4; indent-tabs-mode: 1; st-rulers: [70] -*-
%% vim: ts=4 sw=4 ft=erlang noet
%%%-------------------------------------------------------------------
%%% @author Andrew Bennett <potatosaladx@gmail.com>
%%% @copyright 2019, Andrew Bennett
%%% @doc
%%%
%%% @end
%%% Created :  31 August 2019 by Andrew Bennett <potatosaladx@gmail.com>
%%%-------------------------------------------------------------------
-module(noble_event).

%% Public API
-export([decode/1]).
-export([encode/1]).
-export([validate/1]).
%% Event API

%%%===================================================================
%%% Public API
%%%===================================================================

decode(Input) when is_binary(Input) ->
	maybe_decode_event('Elixir.Jason':'decode!'(Input)).

encode(Event = #{<<"type">> := _}) ->
	'Elixir.Jason':'encode!'(maybe_encode_event(Event)).

validate(Event = #{<<"type">> := _}) ->
	Schema = ets:lookup_element(noble_schema, event, 2),
	'Elixir.JsonXema':'validate'(Schema, Event).

%%%===================================================================
%%% Event API
%%%===================================================================

%%%-------------------------------------------------------------------
%%% Internal functions
%%%-------------------------------------------------------------------

%% @private
maybe_decode_event(Event = #{<<"type">> := _}) ->
	case Event of
		#{<<"type">> := <<"read">>, <<"data">> := Data0} when is_binary(Data0) ->
			Data1 = 'Elixir.Base':'decode16!'(Data0, [{'case', 'mixed'}]),
			Event#{<<"data">> := Data1};
		#{<<"type">> := <<"valueRead">>, <<"data">> := Data0} when is_binary(Data0) ->
			Data1 = 'Elixir.Base':'decode16!'(Data0, [{'case', 'mixed'}]),
			Event#{<<"data">> := Data1};
		#{<<"type">> := <<"handleRead">>, <<"data">> := Data0} when is_binary(Data0) ->
			Data1 = 'Elixir.Base':'decode16!'(Data0, [{'case', 'mixed'}]),
			Event#{<<"data">> := Data1};
		#{<<"type">> := <<"handleNotify">>, <<"data">> := Data0} when is_binary(Data0) ->
			Data1 = 'Elixir.Base':'decode16!'(Data0, [{'case', 'mixed'}]),
			Event#{<<"data">> := Data1};
		#{<<"type">> := <<"discover">>, <<"advertisement">> := Advertisement0} when is_map(Advertisement0) ->
			Advertisement1 = maybe_decode_advertisement(Advertisement0),
			Event#{<<"advertisement">> := Advertisement1};
		#{<<"type">> := <<"pong">>, <<"data">> := Data0} when is_binary(Data0) ->
			Data1 = 'Elixir.Base':'decode16!'(Data0, [{'case', 'mixed'}]),
			Event#{<<"data">> := Data1};
		_ ->
			Event
	end.

%% @private
maybe_decode_advertisement(Advertisement0) when is_map(Advertisement0) ->
	Advertisement1 =
		case Advertisement0 of
			#{<<"manufacturerData">> := ManufacturerData0} when is_binary(ManufacturerData0) ->
				ManufacturerData1 = 'Elixir.Base':'decode16!'(ManufacturerData0, [{'case', 'mixed'}]),
				Advertisement0#{<<"manufacturerData">> := ManufacturerData1};
			_ ->
				Advertisement0
		end,
	Advertisement2 =
		case Advertisement1 of
			#{<<"serviceData">> := ServiceData0} when is_list(ServiceData0) ->
				ServiceData1 = [maybe_decode_service_data(ServiceData) || ServiceData <- ServiceData0],
				Advertisement1#{<<"serviceData">> := ServiceData1};
			_ ->
				Advertisement1
		end,
	Advertisement2.

%% @private
maybe_decode_service_data(ServiceData) when is_map(ServiceData) ->
	case ServiceData of
		#{<<"data">> := Data0} when is_binary(Data0) ->
			Data1 = 'Elixir.Base':'decode16!'(Data0, [{'case', 'mixed'}]),
			ServiceData#{<<"data">> := Data1};
		_ ->
			ServiceData
	end.

%% @private
maybe_encode_event(Event = #{<<"type">> := _}) ->
	case Event of
		#{<<"type">> := <<"read">>, <<"data">> := Data0} when is_binary(Data0) ->
			Data1 = 'Elixir.Base':'encode16!'(Data0, [{'case', 'lower'}]),
			Event#{<<"data">> := Data1};
		#{<<"type">> := <<"valueRead">>, <<"data">> := Data0} when is_binary(Data0) ->
			Data1 = 'Elixir.Base':'encode16!'(Data0, [{'case', 'lower'}]),
			Event#{<<"data">> := Data1};
		#{<<"type">> := <<"handleRead">>, <<"data">> := Data0} when is_binary(Data0) ->
			Data1 = 'Elixir.Base':'encode16!'(Data0, [{'case', 'lower'}]),
			Event#{<<"data">> := Data1};
		#{<<"type">> := <<"handleNotify">>, <<"data">> := Data0} when is_binary(Data0) ->
			Data1 = 'Elixir.Base':'encode16!'(Data0, [{'case', 'lower'}]),
			Event#{<<"data">> := Data1};
		#{<<"type">> := <<"discover">>, <<"advertisement">> := Advertisement0} when is_map(Advertisement0) ->
			Advertisement1 = maybe_encode_advertisement(Advertisement0),
			Event#{<<"advertisement">> := Advertisement1};
		#{<<"type">> := <<"pong">>, <<"data">> := Data0} when is_binary(Data0) ->
			Data1 = 'Elixir.Base':'encode16!'(Data0, [{'case', 'lower'}]),
			Event#{<<"data">> := Data1};
		_ ->
			Event
	end.

%% @private
maybe_encode_advertisement(Advertisement0) when is_map(Advertisement0) ->
	Advertisement1 =
		case Advertisement0 of
			#{<<"manufacturerData">> := ManufacturerData0} when is_binary(ManufacturerData0) ->
				ManufacturerData1 = 'Elixir.Base':'encode16!'(ManufacturerData0, [{'case', 'lower'}]),
				Advertisement0#{<<"manufacturerData">> := ManufacturerData1};
			_ ->
				Advertisement0
		end,
	Advertisement2 =
		case Advertisement1 of
			#{<<"serviceData">> := ServiceData0} when is_list(ServiceData0) ->
				ServiceData1 = [maybe_encode_service_data(ServiceData) || ServiceData <- ServiceData0],
				Advertisement1#{<<"serviceData">> := ServiceData1};
			_ ->
				Advertisement1
		end,
	Advertisement2.

%% @private
maybe_encode_service_data(ServiceData) when is_map(ServiceData) ->
	case ServiceData of
		#{<<"data">> := Data0} when is_binary(Data0) ->
			Data1 = 'Elixir.Base':'encode16!'(Data0, [{'case', 'lower'}]),
			ServiceData#{<<"data">> := Data1};
		_ ->
			ServiceData
	end.