Stage 3.4

src/handlers/handler_user_bookings.erl

@@ -0,0 +1,55 @@
+-module(handler_user_bookings).
+-include("records.hrl").
+
+-export([init/2]).
+
+init(Req, Opts) ->
+  handle(Req, Opts).
+
+handle(Req, _Opts) ->
+  case cowboy_req:method(Req) of
+    <<"GET">> -> list_user_bookings(Req);
+    _ -> send_error(Req, 405, <<"Method not allowed">>)
+  end.
+
+%% GET /v1/user/bookings - список бронирований текущего пользователя
+list_user_bookings(Req) ->
+  case handler_auth:authenticate(Req) of
+    {ok, UserId, Req1} ->
+      case logic_booking:list_user_bookings(UserId) of
+        {ok, Bookings} ->
+          Response = [booking_to_json(B) || B <- Bookings],
+          send_json(Req1, 200, Response);
+        {error, _} ->
+          send_error(Req1, 500, <<"Internal server error">>)
+      end;
+    {error, Code, Message, Req1} ->
+      send_error(Req1, Code, Message)
+  end.
+
+%% Вспомогательные функции
+booking_to_json(Booking) ->
+  #{
+    id => Booking#booking.id,
+    event_id => Booking#booking.event_id,
+    user_id => Booking#booking.user_id,
+    status => Booking#booking.status,
+    confirmed_at => case Booking#booking.confirmed_at of
+                      undefined -> null;
+                      Dt -> datetime_to_iso8601(Dt)
+                    end,
+    created_at => datetime_to_iso8601(Booking#booking.created_at),
+    updated_at => datetime_to_iso8601(Booking#booking.updated_at)
+  }.
+
+datetime_to_iso8601({{Year, Month, Day}, {Hour, Minute, Second}}) ->
+  iolist_to_binary(io_lib:format("~4..0B-~2..0B-~2..0BT~2..0B:~2..0B:~2..0BZ",
+    [Year, Month, Day, Hour, Minute, Second])).
+
+send_json(Req, Status, Data) ->
+  Body = jsx:encode(Data),
+  cowboy_req:reply(Status, #{<<"content-type">> => <<"application/json">>}, Body, Req).
+
+send_error(Req, Status, Message) ->
+  Body = jsx:encode(#{error => Message}),
+  cowboy_req:reply(Status, #{<<"content-type">> => <<"application/json">>}, Body, Req).