%%%-----------------------------------------------------------------------------
%%% @copyright (C) 2012-2019, 2600Hz
%%% @doc
%%% @end
%%%-----------------------------------------------------------------------------
-module(pivot_listener).

-behaviour(gen_listener).

-export([start_link/0]).
-export([init/1
        ,handle_call/3
        ,handle_cast/2
        ,handle_info/2
        ,handle_event/2
        ,terminate/2
        ,code_change/3
        ]).

-include("pivot.hrl").

-define(SERVER, ?MODULE).

-record(state, {}).
-type state() :: #state{}.

%% By convention, we put the options here in macros, but not required.
-define(BINDINGS, [{'self', []}
                  ,{'pivot', []}
                  ]).
-define(RESPONDERS, [{{'pivot_handlers', 'handle_pivot_req'}
                     ,[{<<"dialplan">>, <<"pivot_req">>}]
                     }
                    ]).
-define(QUEUE_NAME, <<"pivot_listener">>).
-define(QUEUE_OPTIONS, [{'exclusive', 'false'}]).
-define(CONSUME_OPTIONS, [{'exclusive', 'false'}]).

%%%=============================================================================
%%% API
%%%=============================================================================

%%------------------------------------------------------------------------------
%% @doc Starts the server.
%% @end
%%------------------------------------------------------------------------------
-spec start_link() -> kz_types:startlink_ret().
start_link() ->
    gen_listener:start_link(?SERVER, [{'bindings', ?BINDINGS}
                                     ,{'responders', ?RESPONDERS}
                                     ,{'queue_name', ?QUEUE_NAME}       % optional to include
                                     ,{'queue_options', ?QUEUE_OPTIONS} % optional to include
                                     ,{'consume_options', ?CONSUME_OPTIONS} % optional to include
                                     ], []).

%%%=============================================================================
%%% gen_server callbacks
%%%=============================================================================

%%------------------------------------------------------------------------------
%% @doc Initializes the server.
%% @end
%%------------------------------------------------------------------------------
-spec init([]) -> {'ok', state()}.
init([]) ->
    {'ok', #state{}}.

%%------------------------------------------------------------------------------
%% @doc Handling call messages.
%% @end
%%------------------------------------------------------------------------------
-spec handle_call(any(), kz_term:pid_ref(), state()) ->
                         {'reply', {'error', 'not_implemented'}, state()}.
handle_call(_Request, _From, State) ->
    {'reply', {'error', 'not_implemented'}, State}.

%%------------------------------------------------------------------------------
%% @doc Handling cast messages.
%% @end
%%------------------------------------------------------------------------------
-spec handle_cast(any(), state()) -> {'noreply', state()} |
                                     {'noreply', state(), 'hibernate'}.
handle_cast({'gen_listener', {'created_queue', _QueueNAme}}, State) ->
    {'noreply', State, 'hibernate'};
handle_cast({'gen_listener', {'is_consuming', _IsConsuming}}, State) ->
    {'noreply', State};
handle_cast(_Msg, State) ->
    lager:debug("unhandled cast: ~p", [_Msg]),
    {'noreply', State}.

%%------------------------------------------------------------------------------
%% @doc Handling all non call/cast messages.
%% @end
%%------------------------------------------------------------------------------
-spec handle_info(any(), state()) -> {'noreply', state()}.
handle_info(_Info, State) ->
    lager:debug("unhandled msg: ~p", [_Info]),
    {'noreply', State}.

%%------------------------------------------------------------------------------
%% @doc Allows listener to pass options to handlers.
%% @end
%%------------------------------------------------------------------------------
-spec handle_event(kz_json:object(), state()) -> {'reply', []}.
handle_event(_JObj, _State) ->
    {'reply', []}.

%%------------------------------------------------------------------------------
%% @doc This function is called by a `gen_server' when it is about to
%% terminate. It should be the opposite of `Module:init/1' and do any
%% necessary cleaning up. When it returns, the `gen_server' terminates
%% with Reason. The return value is ignored.
%%
%% @end
%%------------------------------------------------------------------------------
-spec terminate(any(), state()) -> 'ok'.
terminate(_Reason, _State) ->
    lager:debug("listener terminating: ~p", [_Reason]).

%%------------------------------------------------------------------------------
%% @doc Convert process state when code is changed.
%% @end
%%------------------------------------------------------------------------------
-spec code_change(any(), state(), any()) -> {'ok', state()}.
code_change(_OldVsn, State, _Extra) ->
    {'ok', State}.

%%%=============================================================================
%%% Internal functions
%%%=============================================================================