feat(booking): materialize occurrence on POST bookings. Refs EventHub/EventHubBack#67

src/handlers/handler_bookings.erl

@@ -45,12 +45,29 @@ trails() ->
           schema      => #{type => string}
         }
       ],
+      requestBody => #{
+        required => false,
+        content  => #{
+          <<"application/json">> => #{
+            schema => #{
+              type       => object,
+              properties => #{
+                occurrence_start => #{
+                  type        => string,
+                  format      => <<"date-time">>,
+                  description => <<"Required for recurring masters">>
+                }
+              }
+            }
+          }
+        }
+      },
       responses   => #{
         201 => #{
           description => <<"Booking created">>,
           content     => #{<<"application/json">> => #{schema => BookingSchema}}
         },
-        400 => #{description => <<"Event is full or not active">>},
+        400 => #{description => <<"Event is full, not active, or occurrence_start missing/invalid">>},
         403 => #{description => <<"Access denied">>},
         404 => #{description => <<"Event not found">>},
         409 => #{description => <<"Already booked">>}
@@ -111,29 +128,39 @@ create_booking(Req) ->
   case handler_utils:auth_user(Req) of
     {ok, UserId, Req1} ->
       EventId = cowboy_req:binding(id, Req1),
-      case logic_booking:create_booking(UserId, EventId) of
-        {ok, Booking} ->
-          handler_utils:send_json(Req1, 201, booking_to_json(Booking));
-        {error, already_booked} ->
-          handler_utils:send_error(Req1, 409, <<"Already booked">>);
-        {error, full} ->
-          handler_utils:send_error(Req1, 400, <<"Event is full">>);
-        {error, event_full} ->
-          handler_utils:send_error(Req1, 400, <<"Event is full">>);
-        {error, event_not_active} ->
-          handler_utils:send_error(Req1, 400, <<"Event is not active">>);
-        {error, personal_calendar} ->
-          handler_utils:send_error(Req1, 403, <<"personal_calendar">>);
-        {error, subscription_inactive} ->
-          handler_utils:send_error(Req1, 403, <<"subscription_inactive">>);
-        {error, own_event} ->
-          handler_utils:send_error(Req1, 403, <<"Cannot book own event">>);
-        {error, access_denied} ->
-          handler_utils:send_error(Req1, 403, <<"Access denied">>);
-        {error, not_found} ->
-          handler_utils:send_error(Req1, 404, <<"Event not found">>);
-        {error, _} ->
-          handler_utils:send_error(Req1, 500, <<"Internal server error">>)
+      {ok, Body, Req2} = cowboy_req:read_body(Req1),
+      case parse_occurrence_start(Body) of
+        {error, invalid_occurrence} ->
+          handler_utils:send_error(Req2, 400, <<"Invalid occurrence_start">>);
+        {ok, OccurrenceStart} ->
+          case logic_booking:create_booking(UserId, EventId, OccurrenceStart) of
+            {ok, Booking} ->
+              handler_utils:send_json(Req2, 201, booking_to_json(Booking));
+            {error, already_booked} ->
+              handler_utils:send_error(Req2, 409, <<"Already booked">>);
+            {error, full} ->
+              handler_utils:send_error(Req2, 400, <<"Event is full">>);
+            {error, event_full} ->
+              handler_utils:send_error(Req2, 400, <<"Event is full">>);
+            {error, event_not_active} ->
+              handler_utils:send_error(Req2, 400, <<"Event is not active">>);
+            {error, occurrence_start_required} ->
+              handler_utils:send_error(Req2, 400, <<"occurrence_start required">>);
+            {error, invalid_occurrence} ->
+              handler_utils:send_error(Req2, 400, <<"Invalid occurrence_start">>);
+            {error, personal_calendar} ->
+              handler_utils:send_error(Req2, 403, <<"personal_calendar">>);
+            {error, subscription_inactive} ->
+              handler_utils:send_error(Req2, 403, <<"subscription_inactive">>);
+            {error, own_event} ->
+              handler_utils:send_error(Req2, 403, <<"Cannot book own event">>);
+            {error, access_denied} ->
+              handler_utils:send_error(Req2, 403, <<"Access denied">>);
+            {error, not_found} ->
+              handler_utils:send_error(Req2, 404, <<"Event not found">>);
+            {error, _} ->
+              handler_utils:send_error(Req2, 500, <<"Internal server error">>)
+          end
       end;
     {error, Code, Message, Req1} ->
       handler_utils:send_error(Req1, Code, Message)
@@ -167,4 +194,28 @@ list_bookings(Req) ->
 %% @private Формирует JSON-представление записи #booking{}.
 -spec booking_to_json(#booking{}) -> map().
 booking_to_json(Booking) ->
-  handler_utils:booking_to_json(Booking).
+  handler_utils:booking_to_json(Booking).
+
+-spec parse_occurrence_start(binary()) ->
+  {ok, calendar:datetime() | undefined} | {error, invalid_occurrence}.
+parse_occurrence_start(<<>>) ->
+  {ok, undefined};
+parse_occurrence_start(Body) ->
+  try jsx:decode(Body, [return_maps]) of
+    Map when is_map(Map) ->
+      case maps:get(<<"occurrence_start">>, Map, undefined) of
+        undefined ->
+          {ok, undefined};
+        Iso when is_binary(Iso) ->
+          case handler_utils:parse_datetime(Iso) of
+            {ok, Dt} -> {ok, Dt};
+            {error, _} -> {error, invalid_occurrence}
+          end;
+        _ ->
+          {error, invalid_occurrence}
+      end;
+    _ ->
+      {ok, undefined}
+  catch
+    _:_ -> {error, invalid_occurrence}
+  end.