teacup_nats

% Copyright (c) 2016, Yuce Tekol <yucetekol@gmail.com>.
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-module(teacup_nats).

-export([new/0,
         new/1,
         connect/0,
         connect/2,
         connect/3,
         connect_sync/0,
         connect_sync/2,
         connect_sync/3,
         ping/1,
         pub/2,
         pub/3,
         sub/2,
         sub/3,
         unsub/2,
         unsub/3]).

-define(DEFAULT_HOST, <<"127.0.0.1">>).
-define(DEFAULT_PORT, 4222).
-define(HANDLER, nats@teacup).

%% == API

new() ->
    new(#{}).
 
new(Opts) ->
    teacup:new(?HANDLER, Opts).

connect() ->
    connect(?DEFAULT_HOST, ?DEFAULT_PORT, #{}).
    
connect(Host, Port) ->
    connect(Host, Port, #{}).
    
connect(Host, Port, Opts) ->
    {ok, Conn} = teacup:new(?HANDLER, Opts),
    teacup:connect(Conn, Host, Port),
    {ok, Conn}.
    
connect_sync() ->
    connect_sync(?DEFAULT_HOST, ?DEFAULT_PORT, #{}).
    
connect_sync(Host, Port) ->
    connect_sync(Host, Port, #{}).
    
connect_sync(Host, Port, Opts) ->    
    {ok, Conn} = teacup:new(?HANDLER, Opts),
    teacup:connect(Conn, Host, Port),
    receive
        {Conn, ready} ->
            {ok, Conn}
    end.

-spec ping(Ref :: teacup:teacup_ref()) -> ok.    
ping(Ref) ->
    teacup:cast(Ref, ping).

pub(Ref, Subject) ->
    pub(Ref, Subject, #{}).

-spec pub(Ref :: teacup:teacup_ref(), Subject :: binary(), Opts :: map()) ->
    ok.
pub(Ref, Subject, Opts) ->
    teacup:cast(Ref, {pub, Subject, Opts}).                        

sub(Ref, Subject) ->
    sub(Ref, Subject, #{}).

-spec sub(Ref :: teacup:teacup_ref(), Subject :: binary(), Opts :: map()) ->
    ok.
sub(Ref, Subject, Opts) ->
    teacup:cast(Ref, {sub, Subject, Opts, self()}).    

unsub(Ref, Subject) ->
    unsub(Ref, Subject, #{}).

-spec unsub(Ref :: teacup:teacup_ref(), Subject :: binary(), Opts :: map()) ->
    ok.
unsub(Ref, Subject, Opts) ->
    teacup:cast(Ref, {unsub, Subject, Opts, self()}).