-module(ephraim_event).
-compile([debug_info, export_all]).
-include_lib("exmpp/include/exmpp.hrl").

-spec init() -> ok.
init() ->
    loop().

-spec handleEvent(binary(), #xmlel{}) -> ok.
handleEvent(From, Item) ->
    % HasAvatarData = exmpp_xml:has_element(Item, 'urn:xmpp:avatar:data', data),
    % HasAvatarMetaData = exmpp_xml:has_element(Item, 'urn:xmpp:avatar:metadata', metadata),
    if %HasAvatarData ->
       %     Element = exmpp_xml:get_element(Item, 'urn:xmpp:avatar:data', data),
       %     Data = base64:decode(exmpp_xml:get_cdata_from_list(Element#xmlel.children)),
       %     ephraim ! {roster, {avatar, From, Data}},
       %     ok;
       %HasAvatarMetaData ->
       %     ok;
       true ->
            io:format("Received unhandled event from ~p:~n~p~n", [From, Item])
    end.

-spec handleEvents(binary(), [#xmlel{}]) -> ok.
handleEvents(_, []) ->
    ok;
handleEvents(From, [Item|Rest]) ->
    handleEvent(From, Item),
    handleEvents(From, Rest).

-spec loop() -> ok.
loop() ->
    receive
        stop ->
            ok;
        
        {receive_event, From, Packet} ->
            Event = exmpp_xml:get_element(Packet, 'http://jabber.org/protocol/pubsub#event', event),
            Items = exmpp_xml:get_element(Event, 'http://jabber.org/protocol/pubsub#event', items),
            handleEvents(From, Items#xmlel.children),
            loop();
        
        Msg ->
            io:format("ephraim_event: ~p~n", [Msg]),
            loop()
    end.