Working on the creation of invasions.

1 files changed, 129 insertions, 0 deletions

diff --git a/src/battle/query/btl_join.erl b/src/battle/query/btl_join.erl
new file mode 100644
index 0000000..8ecb609
--- /dev/null
+++ b/src/battle/query/btl_join.erl
@@ -0,0 +1,129 @@
+-module(btl_join).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% TYPES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+-include("../../../include/yaws_api.hrl").
+
+-type mode() :: (attack | defend | {invalid, binary()}).
+
+-record
+(
+   input,
+   {
+      player_id :: shr_player:id(),
+      session_token :: binary(),
+      mode :: mode(),
+      size :: non_neg_integer(),
+      roster_ixs :: list(non_neg_integer()),
+      map_id :: string()
+   }
+).
+
+-record
+(
+   query_state,
+   {
+      battle :: btl_battle: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),
+
+   Mode =
+      case maps:get(<<"m">>, JSONReqMap) of
+         <<"a">> -> attack;
+         <<"b">> -> defend;
+         V -> {invalid, V}
+      end,
+
+   true = ((Mode == attack) or (Mode == defend)),
+
+   Size =
+      case maps:get(<<"s">>, JSONReqMap) of
+         <<"s">> -> 8;
+         <<"m">> -> 16;
+         <<"l">> -> 24;
+         _ -> 0
+      end,
+
+   Roster = maps:get(<<"r">>, JSONReqMap),
+   MapID =  maps:get(<<"map_id">>, JSONReqMap),
+
+   #input
+   {
+      player_id = PlayerID,
+      session_token = SessionToken,
+      mode = Mode,
+      size = Size,
+      roster_ixs = Roster,
+      map_id = MapID
+   }.
+
+-spec authenticate_user (input()) -> ('ok' | 'error').
+authenticate_user (Input) ->
+   PlayerID = Input#input.player_id,
+   SessionToken = Input#input.session_token,
+
+   Player = shr_timed_cache:fetch(player_db, any, PlayerID),
+
+   case shr_security:credentials_match(SessionToken, Player) of
+      true -> ok;
+      _ -> error
+   end.
+
+-spec fetch_data (input()) -> query_state().
+fetch_data (Input) ->
+   PlayerID = Input#input.player_id,
+   BattleID = Input#input.battle_id,
+
+   Battle = shr_timed_cache:fetch(battle_db, PlayerID, BattleID),
+
+   #query_state
+   {
+      battle = Battle
+   }.
+
+
+-spec generate_reply(query_state(), input()) -> binary().
+generate_reply (QueryState, Input) ->
+
+   Output.
+
+-spec handle (binary()) -> binary().
+handle (Req) ->
+   Input = parse_input(Req),
+   case authenticate_user(Input) of
+      ok ->
+         shr_security:lock_queries(Input#input.player_id),
+         QueryState = fetch_data(Input),
+         shr_security:unlock_queries(Input#input.player_id),
+         generate_reply(QueryState, Input);
+
+      error -> jiffy:encode([shr_disconnected:generate()])
+   end.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% EXPORTED FUNCTIONS %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+out(A) ->
+   {
+      content,
+      "application/json; charset=UTF-8",
+      handle(A#arg.clidata)
+   }.