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|
-module(map_update).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-include("../../../include/yaws_api.hrl").
-record
(
input,
{
player_id :: binary(),
session_token :: binary(),
map_id :: binary(),
w :: non_neg_integer(),
h :: non_neg_integer(),
t :: list(list(non_neg_integer()))
}
).
-record
(
query_state,
{
map :: map_map:type()
}
).
-type input() :: #input{}.
-type query_state() :: #query_state{}.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-export([out/1]).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% LOCAL FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-spec parse_input (binary()) -> input().
parse_input (Req) ->
JSONReqMap = jiffy:decode(Req, [return_maps]),
PlayerID = maps:get(<<"pid">>, JSONReqMap),
SessionToken = maps:get(<<"stk">>, JSONReqMap),
MapID = maps:get(<<"mid">>, JSONReqMap),
MapWidth = maps:get(<<"w">>, JSONReqMap),
MapHeight = maps:get(<<"h">>, JSONReqMap),
MapContent = maps:get(<<"t">>, JSONReqMap),
true = (MapWidth > 0),
true = (MapHeight > 0),
true = (length(MapContent) == (MapWidth * MapHeight)),
true =
lists:all
(
fun (T) ->
[M|[V|B]] = T,
(
(M > 0)
and (V >= 0)
and ((length(B) rem 2) == 0)
and
lists:all
(
fun (Bo) ->
%% FIXME: this does not prevent "Error" tiles.
(Bo >= 0)
end,
B
)
)
end,
MapContent
),
#input
{
player_id = PlayerID,
session_token = SessionToken,
map_id = MapID,
w = MapWidth,
h = MapHeight,
t = MapContent
}.
-spec fetch_data (input()) -> query_state().
fetch_data (Input) ->
PlayerID = Input#input.player_id,
MapID = Input#input.map_id,
Map = shr_timed_cache:fetch(map_db, PlayerID, MapID),
#query_state
{
map = Map
}.
-spec update_data (query_state(), input()) -> query_state().
update_data (QueryState, Input) ->
QueryState#query_state
{
map =
map_map:update_from_list
(
QueryState#query_state.map,
Input#input.w,
Input#input.h,
Input#input.t
)
}.
-spec commit_update (query_state(), input()) -> 'ok'.
commit_update (QueryState, Input) ->
PlayerID = Input#input.player_id,
MapID = Input#input.map_id,
Map = QueryState#query_state.map,
Query =
shr_db_query:new
(
map_db,
MapID,
{user, PlayerID},
[
shr_db_query:set_field
(
map_map:get_height_field(),
Input#input.h
),
shr_db_query:set_field
(
map_map:get_width_field(),
Input#input.w
),
shr_db_query:set_field
(
map_map:get_tile_instances_field(),
map_map:get_tile_instances(Map)
)
]
),
shr_database:commit(Query),
shr_timed_cache:update(map_db, PlayerID, MapID, Map),
'ok'.
-spec generate_reply () -> binary().
generate_reply () ->
jiffy:encode([shr_okay:generate()]).
-spec handle (binary()) -> binary().
handle (Req) ->
Input = parse_input(Req),
shr_security:assert_identity
(
Input#input.player_id,
Input#input.session_token
),
shr_security:lock_queries(Input#input.player_id),
QueryState = fetch_data(Input),
Update = update_data(QueryState, Input),
commit_update(Update, Input),
shr_security:unlock_queries(Input#input.player_id),
generate_reply().
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% EXPORTED FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
out(A) ->
{
content,
"application/json; charset=UTF-8",
handle(A#arg.clidata)
}.
|
