124 lines
4.0 KiB
Erlang
Executable File
124 lines
4.0 KiB
Erlang
Executable File
%%%-------------------------------------------------------------------
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%%% @doc Follow / unfollow чужого календаря.
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%%%
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%%% POST /v1/calendars/:id/follow — подписаться
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%%% DELETE /v1/calendars/:id/follow — отписаться
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%%% @end
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%%%-------------------------------------------------------------------
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-module(handler_calendar_follow).
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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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-include("records.hrl").
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-spec init(cowboy_req:req(), any()) -> {ok, cowboy_req:req(), any()}.
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init(Req, Opts) ->
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handle(Req, Opts).
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-spec trails() -> [map()].
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trails() ->
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BaseParams = [
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#{
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name => <<"id">>,
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in => <<"path">>,
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description => <<"Calendar ID">>,
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required => true,
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schema => #{type => string}
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}
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],
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FollowResponse = #{
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type => object,
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properties => #{
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calendar_id => #{type => string},
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following => #{type => boolean}
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}
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},
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[
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#{
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path => <<"/v1/calendars/:id/follow">>,
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method => <<"POST">>,
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description => <<"Follow a calendar (not paid subscription)">>,
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tags => [<<"Calendars">>],
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parameters => BaseParams,
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responses => #{
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200 => #{
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description => <<"Following">>,
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content => #{<<"application/json">> => #{schema => FollowResponse}}
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},
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401 => #{description => <<"Unauthorized">>},
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403 => #{description => <<"Own calendar or access denied">>},
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404 => #{description => <<"Calendar not found">>}
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}
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},
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#{
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path => <<"/v1/calendars/:id/follow">>,
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method => <<"DELETE">>,
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description => <<"Unfollow a calendar">>,
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tags => [<<"Calendars">>],
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parameters => BaseParams,
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responses => #{
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200 => #{
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description => <<"Unfollowed">>,
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content => #{<<"application/json">> => #{schema => FollowResponse}}
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},
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401 => #{description => <<"Unauthorized">>},
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403 => #{description => <<"Own calendar">>},
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404 => #{description => <<"Calendar not found">>}
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}
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}
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].
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-spec handle(cowboy_req:req(), any()) -> {ok, cowboy_req:req(), any()}.
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handle(Req, _Opts) ->
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case cowboy_req:method(Req) of
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<<"POST">> -> follow(Req);
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<<"DELETE">> -> unfollow(Req);
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_ -> handler_utils:send_error(Req, 405, <<"Method not allowed">>)
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end.
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-spec follow(cowboy_req:req()) -> {ok, cowboy_req:req(), any()}.
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follow(Req) ->
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case handler_utils:auth_user(Req) of
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{ok, UserId, Req1} ->
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CalendarId = cowboy_req:binding(id, Req1),
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case logic_calendar_follow:follow(UserId, CalendarId) of
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{ok, _} ->
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handler_utils:send_json(Req1, 200, #{
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calendar_id => CalendarId,
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following => true
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});
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{error, not_found} ->
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handler_utils:send_error(Req1, 404, <<"Calendar not found">>);
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{error, own_calendar} ->
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handler_utils:send_error(Req1, 403, <<"Cannot follow own calendar">>);
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{error, access_denied} ->
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handler_utils:send_error(Req1, 403, <<"Access denied">>);
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{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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handler_utils:send_error(Req1, Code, Message)
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end.
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-spec unfollow(cowboy_req:req()) -> {ok, cowboy_req:req(), any()}.
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unfollow(Req) ->
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case handler_utils:auth_user(Req) of
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{ok, UserId, Req1} ->
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CalendarId = cowboy_req:binding(id, Req1),
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case logic_calendar_follow:unfollow(UserId, CalendarId) of
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ok ->
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handler_utils:send_json(Req1, 200, #{
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calendar_id => CalendarId,
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following => false
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});
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{error, own_calendar} ->
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handler_utils:send_error(Req1, 403, <<"Cannot unfollow own calendar">>);
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{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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handler_utils:send_error(Req1, Code, Message)
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end.
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