%%% ====================================================================
%%% This software is copyright 2007, Process-one.
%%%
%%% @copyright 2007 Process-one
%%% @author Christophe Romain <christophe.romain@process-one.net>
%%%   [http://www.process-one.net/]
%%% @version {@vsn}, {@date} {@time}
%%% @end
%%% ====================================================================

%%% @doc The module <strong>{@module}</strong> is the pep PubSub plugin.
%%% <p>PubSub plugin nodes are using the {@link gen_pubsub_node} behaviour.</p>

-module(node_pep).
-author('christophe.romain@process-one.net').

-include("pubsub.hrl").
-include("jlib.hrl").

-behaviour(gen_pubsub_node).

%% API definition
-export([init/3, terminate/2,
	 options/0, features/0,
	 create_node_permission/6,
	 create_node/3,
	 delete_node/2,
	 purge_node/3,
	 subscribe_node/8,
	 unsubscribe_node/5,
	 publish_item/7,
	 delete_item/4,
	 remove_extra_items/4,
	 get_entity_affiliations/2,
	 get_node_affiliations/2,
	 get_affiliation/3,
	 set_affiliation/4,
	 get_entity_subscriptions/2,
	 get_node_subscriptions/2,
	 get_subscription/3,
	 set_subscription/4,
	 get_states/2,
	 get_state/3,
	 set_state/1,
	 get_items/2,
	 get_item/3,
	 set_item/1
	]).

init(Host, ServerHost, Opts) ->
    node_default:init(Host, ServerHost, Opts),
    ok.

terminate(Host, ServerHost) ->
    node_default:terminate(Host, ServerHost),
    ok.

options() ->
    [{node_type, pep},
     {deliver_payloads, true},
     {notify_config, false},
     {notify_delete, false},
     {notify_retract, false},
     {persist_items, false},
     {max_items, ?MAXITEMS div 2},
     {subscribe, true},
     {access_model, presence},
     {access_roster_groups, []},
     {publish_model, publishers},
     {max_payload_size, ?MAX_PAYLOAD_SIZE},
     {send_last_published_item, on_sub_and_presence},
     {deliver_notifications, true},
     {presence_based_delivery, true}].

features() ->
    ["create-nodes", %*
     "auto-create", %*
     "delete-nodes", %*
     "item-ids",
     "outcast-affiliation",
     "persistent-items",
     "publish", %*
     "purge-nodes",
     "retract-items",
     "retrieve-affiliations",
     "retrieve-items", %*
     "retrieve-subscriptions",
     "subscribe", %*
     "auto-subscribe", %*
     "filtered-notifications" %*
    ].

create_node_permission(_Host, _ServerHost, _Node, _ParentNode, _Owner, _Access) ->
    %% TODO may we check bare JID match ?
    {result, true}.

create_node(Host, Node, Owner) ->
    case node_default:create_node(Host, Node, Owner) of
	{result, _} -> {result, []};
	Error -> Error
    end.

delete_node(Host, Removed) ->
    case node_default:delete_node(Host, Removed) of
	{result, {_, _, Removed}} -> {result, {[], Removed}};
	Error -> Error
    end.

subscribe_node(Host, Node, Sender, Subscriber, AccessModel,
	       SendLast, PresenceSubscription, RosterGroup) ->
    node_default:subscribe_node(
      Host, Node, Sender, Subscriber, AccessModel, SendLast,
      PresenceSubscription, RosterGroup).

unsubscribe_node(Host, Node, Sender, Subscriber, SubID) ->
    case node_default:unsubscribe_node(Host, Node, Sender, Subscriber, SubID) of
	{error, Error} -> {error, Error};
	{result, _} -> {result, []}
    end.

publish_item(Host, Node, Publisher, Model, MaxItems, ItemId, Payload) ->
    node_default:publish_item(Host, Node, Publisher, Model, MaxItems, ItemId, Payload).

remove_extra_items(Host, Node, MaxItems, ItemIds) ->
    node_default:remove_extra_items(Host, Node, MaxItems, ItemIds).

delete_item(Host, Node, JID, ItemId) ->
    node_default:delete_item(Host, Node, JID, ItemId).

purge_node(Host, Node, Owner) ->
    node_default:purge_node(Host, Node, Owner).

get_entity_affiliations(Host, Owner) ->
    node_default:get_entity_affiliations(Host, Owner).

get_node_affiliations(Host, Node) ->
    node_default:get_node_affiliations(Host, Node).

get_affiliation(Host, Node, Owner) ->
    node_default:get_affiliation(Host, Node, Owner).

set_affiliation(Host, Node, Owner, Affiliation) ->
    node_default:set_affiliation(Host, Node, Owner, Affiliation).

get_entity_subscriptions(Host, Owner) ->
    node_default:get_entity_subscriptions(Host, Owner).

get_node_subscriptions(Host, Node) ->
    node_default:get_node_subscriptions(Host, Node).

get_subscription(Host, Node, Owner) ->
    node_default:get_subscription(Host, Node, Owner).

set_subscription(Host, Node, Owner, Subscription) ->
    node_default:set_subscription(Host, Node, Owner, Subscription).

get_states(Host, Node) ->
    node_default:get_states(Host, Node).

get_state(Host, Node, JID) ->
    node_default:get_state(Host, Node, JID).

set_state(State) ->
    node_default:set_state(State).

get_items(Host, Node) ->
    node_default:get_items(Host, Node).

get_item(Host, Node, ItemId) ->
    node_default:get_items(Host, Node, ItemId).

set_item(Item) ->
    node_default:set_item(Item).