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%%%-------------------------------------------------------------------
%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net>
%%% @copyright (C) 2016, Evgeny Khramtsov
%%% @doc
%%%
%%% @end
%%% Created : 13 Apr 2016 by Evgeny Khramtsov <ekhramtsov@process-one.net>
%%%-------------------------------------------------------------------
-module(mod_caps_sql).
-behaviour(mod_caps).
%% API
-export([init/2, caps_read/2, caps_write/3, export/1]).
-include("mod_caps.hrl").
%%%===================================================================
%%% API
%%%===================================================================
init(_Host, _Opts) ->
ok.
caps_read(LServer, {Node, SubNode}) ->
SNode = ejabberd_sql:escape(Node),
SSubNode = ejabberd_sql:escape(SubNode),
case ejabberd_sql:sql_query(
LServer, [<<"select feature from caps_features where ">>,
<<"node='">>, SNode, <<"' and subnode='">>,
SSubNode, <<"';">>]) of
{selected, [<<"feature">>], [[H]|_] = Fs} ->
case catch jlib:binary_to_integer(H) of
Int when is_integer(Int), Int>=0 ->
{ok, Int};
_ ->
{ok, lists:flatten(Fs)}
end;
_ ->
error
end.
caps_write(LServer, NodePair, Features) ->
ejabberd_sql:sql_transaction(
LServer,
sql_write_features_t(NodePair, Features)).
export(_Server) ->
[{caps_features,
fun(_Host, #caps_features{node_pair = NodePair,
features = Features}) ->
sql_write_features_t(NodePair, Features);
(_Host, _R) ->
[]
end}].
%%%===================================================================
%%% Internal functions
%%%===================================================================
sql_write_features_t({Node, SubNode}, Features) ->
SNode = ejabberd_sql:escape(Node),
SSubNode = ejabberd_sql:escape(SubNode),
NewFeatures = if is_integer(Features) ->
[jlib:integer_to_binary(Features)];
true ->
Features
end,
[[<<"delete from caps_features where node='">>,
SNode, <<"' and subnode='">>, SSubNode, <<"';">>]|
[[<<"insert into caps_features(node, subnode, feature) ">>,
<<"values ('">>, SNode, <<"', '">>, SSubNode, <<"', '">>,
ejabberd_sql:escape(F), <<"');">>] || F <- NewFeatures]].
|
