Рефакторинг обработчиков. Часть 2 #21
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@@ -1,122 +1,194 @@
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%%%-------------------------------------------------------------------
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%%% @doc Обработчик маршрута `/v1/calendars`.
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%%%
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%%% POST – создание нового календаря (требуется подписка для commercial).
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%%% GET – получение списка календарей пользователя.
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%%% @end
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%%%-------------------------------------------------------------------
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-module(handler_calendars).
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-include("records.hrl").
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-behaviour(cowboy_handler).
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-export([init/2]).
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-export([trails/0]).
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init(Req, Opts) ->
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handle(Req, Opts).
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-include("records.hrl").
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handle(Req, _Opts) ->
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case cowboy_req:method(Req) of
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<<"POST">> -> create_calendar(Req);
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<<"GET">> -> list_calendars(Req);
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_ -> send_error(Req, 405, <<"Method not allowed">>)
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%%% cowboy_handler callback
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-spec init(cowboy_req:req(), any()) -> {ok, cowboy_req:req(), any()}.
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init(Req0, _State) ->
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case cowboy_req:method(Req0) of
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<<"POST">> -> create_calendar(Req0);
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<<"GET">> -> list_calendars(Req0);
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_ -> handler_utils:send_error(Req0, 405, <<"Method not allowed">>)
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end.
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%% POST /v1/calendars - создание календаря
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%%% Swagger metadata
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-spec trails() -> [map()].
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trails() ->
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[
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#{ % POST
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path => <<"/v1/calendars">>,
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method => <<"POST">>,
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description => <<"Create a new calendar">>,
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tags => [<<"Calendars">>],
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requestBody => #{
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required => true,
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content => #{<<"application/json">> => #{schema => calendar_create_schema()}}
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},
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responses => #{
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201 => #{description => <<"Calendar created">>},
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400 => #{description => <<"Missing required fields or invalid JSON">>},
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402 => #{description => <<"Subscription required for commercial calendar">>},
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403 => #{description => <<"User account is not active">>}
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}
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},
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#{ % GET
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path => <<"/v1/calendars">>,
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method => <<"GET">>,
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description => <<"List calendars of current user">>,
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tags => [<<"Calendars">>],
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responses => #{
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200 => #{
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description => <<"Array of calendars">>,
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content => #{<<"application/json">> => #{schema => #{
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type => array,
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items => calendar_schema()
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}}}
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}
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}
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}
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].
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-spec calendar_schema() -> map().
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calendar_schema() ->
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#{
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type => object,
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properties => #{
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id => #{type => string},
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owner_id => #{type => string},
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title => #{type => string},
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description => #{type => string},
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short_name => #{type => string, nullable => true},
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category => #{type => string, nullable => true},
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color => #{type => string, nullable => true},
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image_url => #{type => string, nullable => true},
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settings => #{type => object, nullable => true},
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tags => #{type => array, items => #{type => string}},
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type => #{type => string, enum => [<<"personal">>, <<"commercial">>]},
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confirmation => #{type => string, description => <<"auto, manual, or {timeout, N}">>},
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rating_avg => #{type => number, format => float},
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rating_count => #{type => integer},
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status => #{type => string, enum => [<<"active">>, <<"frozen">>, <<"deleted">>]},
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reason => #{type => string, nullable => true},
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created_at => #{type => string, format => <<"date-time">>},
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updated_at => #{type => string, format => <<"date-time">>}
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}
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}.
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-spec calendar_create_schema() -> map().
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calendar_create_schema() ->
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#{
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type => object,
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required => [<<"title">>],
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properties => #{
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title => #{type => string},
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description => #{type => string},
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confirmation => #{type => string, description => <<"auto, manual, or {timeout, N}">>},
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tags => #{type => array, items => #{type => string}},
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type => #{type => string, enum => [<<"personal">>, <<"commercial">>]}
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}
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}.
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%%%===================================================================
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%%% HTTP-методы
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%%%===================================================================
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%% @doc POST /v1/calendars — создание календаря.
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-spec create_calendar(cowboy_req:req()) -> {ok, binary(), cowboy_req:req()}.
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create_calendar(Req) ->
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case handler_auth:authenticate(Req) of
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case handler_utils:auth_user(Req) of
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{ok, UserId, Req1} ->
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{ok, Body, Req2} = cowboy_req:read_body(Req1),
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try jsx:decode(Body, [return_maps]) of
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Decoded when is_map(Decoded) ->
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case Decoded of
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#{<<"title">> := Title} ->
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Description = maps:get(<<"description">>, Decoded, <<"">>),
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Description = maps:get(<<"description">>, Decoded, <<"">>),
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Confirmation = parse_confirmation(maps:get(<<"confirmation">>, Decoded, <<"manual">>)),
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Tags = maps:get(<<"tags">>, Decoded, []),
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Type = parse_type(maps:get(<<"type">>, Decoded, <<"personal">>)),
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% Проверяем подписку для commercial календарей ДО создания
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Tags = maps:get(<<"tags">>, Decoded, []),
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Type = parse_type(maps:get(<<"type">>, Decoded, <<"personal">>)),
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case Type of
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commercial ->
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case logic_subscription:can_create_commercial_calendar(UserId) of
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true -> ok;
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true -> ok;
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false ->
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send_error(Req2, 402, <<"Subscription required for commercial calendar">>),
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handler_utils:send_error(Req2, 402, <<"Subscription required for commercial calendar">>),
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throw(stop)
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end;
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personal -> ok
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end,
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case logic_calendar:create_calendar(UserId, Title, Description, Confirmation) of
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{ok, Calendar} ->
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% Обновляем теги и тип
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Updates = [{tags, Tags}, {type, Type}],
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core_calendar:update(Calendar#calendar.id, Updates),
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{ok, Updated} = core_calendar:get_by_id(Calendar#calendar.id),
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Response = calendar_to_json(Updated),
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send_json(Req2, 201, Response);
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handler_utils:send_json(Req2, 201, Response);
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{error, user_inactive} ->
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send_error(Req2, 403, <<"User account is not active">>);
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handler_utils:send_error(Req2, 403, <<"User account is not active">>);
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{error, _} ->
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send_error(Req2, 500, <<"Internal server error">>)
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handler_utils:send_error(Req2, 500, <<"Internal server error">>)
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end;
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_ ->
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send_error(Req2, 400, <<"Missing required field: title">>)
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handler_utils:send_error(Req2, 400, <<"Missing required field: title">>)
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end;
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_ ->
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send_error(Req2, 400, <<"Invalid JSON">>)
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handler_utils:send_error(Req2, 400, <<"Invalid JSON">>)
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catch
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throw:stop -> ok; % Уже отправили ошибку
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_:_ ->
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send_error(Req2, 400, <<"Invalid JSON format">>)
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throw:stop -> ok;
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_:_ -> handler_utils:send_error(Req2, 400, <<"Invalid JSON format">>)
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end;
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{error, Code, Message, Req1} ->
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send_error(Req1, Code, Message)
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handler_utils:send_error(Req1, Code, Message)
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end.
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parse_confirmation(<<"auto">>) -> auto;
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parse_confirmation(<<"manual">>) -> manual;
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parse_confirmation(#{<<"timeout">> := N}) when is_integer(N), N > 0 -> {timeout, N};
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parse_confirmation(_) -> manual.
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parse_type(<<"personal">>) -> personal;
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parse_type(<<"commercial">>) -> commercial;
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parse_type(_) -> personal.
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%% GET /v1/calendars - список календарей
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%% @doc GET /v1/calendars — список календарей пользователя.
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-spec list_calendars(cowboy_req:req()) -> {ok, binary(), cowboy_req:req()}.
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list_calendars(Req) ->
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case handler_auth:authenticate(Req) of
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case handler_utils:auth_user(Req) of
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{ok, UserId, Req1} ->
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case logic_calendar:list_calendars(UserId) of
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{ok, Calendars} ->
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Response = [calendar_to_json(C) || C <- Calendars],
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send_json(Req1, 200, Response);
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handler_utils:send_json(Req1, 200, Response);
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{error, _} ->
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send_error(Req1, 500, <<"Internal server error">>)
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handler_utils:send_error(Req1, 500, <<"Internal server error">>)
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end;
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{error, Code, Message, Req1} ->
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send_error(Req1, Code, Message)
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handler_utils:send_error(Req1, Code, Message)
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end.
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%% Вспомогательные функции
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%%%===================================================================
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%%% Внутренние функции
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%%%===================================================================
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-spec calendar_to_json(#calendar{}) -> map().
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calendar_to_json(Calendar) ->
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#{
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id => Calendar#calendar.id,
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owner_id => Calendar#calendar.owner_id,
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title => Calendar#calendar.title,
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description => Calendar#calendar.description,
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tags => Calendar#calendar.tags,
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type => Calendar#calendar.type,
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confirmation => confirmation_to_json(Calendar#calendar.confirmation),
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rating_avg => Calendar#calendar.rating_avg,
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rating_count => Calendar#calendar.rating_count,
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status => Calendar#calendar.status,
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created_at => Calendar#calendar.created_at,
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updated_at => Calendar#calendar.updated_at
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}.
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Base = handler_utils:calendar_to_json(Calendar),
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Base#{confirmation => confirmation_to_json(Calendar#calendar.confirmation)}.
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confirmation_to_json(auto) -> <<"auto">>;
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confirmation_to_json(manual) -> <<"manual">>;
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confirmation_to_json({timeout, N}) -> #{<<"timeout">> => N}.
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-spec confirmation_to_json(auto | manual | {timeout, integer()}) -> binary() | map().
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confirmation_to_json(auto) -> <<"auto">>;
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confirmation_to_json(manual) -> <<"manual">>;
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confirmation_to_json({timeout, N}) -> #{<<"timeout">> => N}.
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send_json(Req, Status, Data) ->
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Body = jsx:encode(Data),
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cowboy_req:reply(Status, #{<<"content-type">> => <<"application/json">>}, Body, Req),
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{ok, Body, []}.
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-spec parse_confirmation(binary() | map()) -> auto | manual | {timeout, integer()}.
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parse_confirmation(<<"auto">>) -> auto;
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parse_confirmation(<<"manual">>) -> manual;
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parse_confirmation(#{<<"timeout">> := N}) when is_integer(N), N > 0 -> {timeout, N};
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parse_confirmation(_) -> manual.
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send_error(Req, Status, Message) ->
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Body = jsx:encode(#{error => Message}),
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cowboy_req:reply(Status, #{<<"content-type">> => <<"application/json">>}, Body, Req),
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{ok, Body, []}.
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-spec parse_type(binary()) -> personal | commercial.
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parse_type(<<"personal">>) -> personal;
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parse_type(<<"commercial">>) -> commercial;
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parse_type(_) -> personal.
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