Stage 3.4

2026-04-20 16:40:44 +03:00
parent 42a047a938
commit b24cbc97f3
25 changed files with 2520 additions and 123 deletions
@@ -0,0 +1,128 @@
+-module(handler_booking_by_id).
+-include("records.hrl").
+
+-export([init/2]).
+
+init(Req, Opts) ->
+  handle(Req, Opts).
+
+handle(Req, _Opts) ->
+  case cowboy_req:method(Req) of
+    <<"GET">> -> get_booking(Req);
+    <<"PUT">> -> update_booking(Req);
+    <<"DELETE">> -> cancel_booking(Req);
+    _ -> send_error(Req, 405, <<"Method not allowed">>)
+  end.
+
+%% GET /v1/bookings/:id - получение бронирования
+get_booking(Req) ->
+  case handler_auth:authenticate(Req) of
+    {ok, UserId, Req1} ->
+      BookingId = cowboy_req:binding(id, Req1),
+      case logic_booking:get_booking(UserId, BookingId) of
+        {ok, Booking} ->
+          Response = booking_to_json(Booking),
+          send_json(Req1, 200, Response);
+        {error, access_denied} ->
+          send_error(Req1, 403, <<"Access denied">>);
+        {error, not_found} ->
+          send_error(Req1, 404, <<"Booking not found">>);
+        {error, _} ->
+          send_error(Req1, 500, <<"Internal server error">>)
+      end;
+    {error, Code, Message, Req1} ->
+      send_error(Req1, Code, Message)
+  end.
+
+%% PUT /v1/bookings/:id - подтверждение/отклонение бронирования (владельцем)
+update_booking(Req) ->
+  case handler_auth:authenticate(Req) of
+    {ok, UserId, Req1} ->
+      BookingId = cowboy_req:binding(id, Req1),
+      {ok, Body, Req2} = cowboy_req:read_body(Req1),
+      try jsx:decode(Body, [return_maps]) of
+        Decoded when is_map(Decoded) ->
+          case maps:get(<<"action">>, Decoded, undefined) of
+            <<"confirm">> ->
+              case logic_booking:confirm_booking(UserId, BookingId, confirm) of
+                {ok, Booking} ->
+                  Response = booking_to_json(Booking),
+                  send_json(Req2, 200, Response);
+                {error, access_denied} ->
+                  send_error(Req2, 403, <<"Access denied">>);
+                {error, not_found} ->
+                  send_error(Req2, 404, <<"Booking not found">>);
+                {error, _} ->
+                  send_error(Req2, 500, <<"Internal server error">>)
+              end;
+            <<"decline">> ->
+              case logic_booking:confirm_booking(UserId, BookingId, decline) of
+                {ok, Booking} ->
+                  Response = booking_to_json(Booking),
+                  send_json(Req2, 200, Response);
+                {error, access_denied} ->
+                  send_error(Req2, 403, <<"Access denied">>);
+                {error, not_found} ->
+                  send_error(Req2, 404, <<"Booking not found">>);
+                {error, _} ->
+                  send_error(Req2, 500, <<"Internal server error">>)
+              end;
+            _ ->
+              send_error(Req2, 400, <<"Missing or invalid 'action' field. Use 'confirm' or 'decline'">>)
+          end;
+        _ ->
+          send_error(Req2, 400, <<"Invalid JSON">>)
+      catch
+        _:_ ->
+          send_error(Req2, 400, <<"Invalid JSON format">>)
+      end;
+    {error, Code, Message, Req1} ->
+      send_error(Req1, Code, Message)
+  end.
+
+%% DELETE /v1/bookings/:id - отмена бронирования (участником)
+cancel_booking(Req) ->
+  case handler_auth:authenticate(Req) of
+    {ok, UserId, Req1} ->
+      BookingId = cowboy_req:binding(id, Req1),
+      case logic_booking:cancel_booking(UserId, BookingId) of
+        {ok, Booking} ->
+          Response = booking_to_json(Booking),
+          send_json(Req1, 200, Response);
+        {error, access_denied} ->
+          send_error(Req1, 403, <<"Access denied">>);
+        {error, not_found} ->
+          send_error(Req1, 404, <<"Booking not found">>);
+        {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).