Files
EventHubBack/src/handlers/admin/admin_handler_user_by_id.erl

123 lines
4.0 KiB
Erlang

-module(admin_handler_user_by_id).
-include("records.hrl").
-export([init/2]).
-export([user_to_json/1, convert_updates/1]).
init(Req, Opts) ->
handle(Req, Opts).
handle(Req, _Opts) ->
case cowboy_req:method(Req) of
<<"GET">> -> get_user(Req);
<<"PUT">> -> update_user(Req);
<<"DELETE">> -> delete_user(Req);
_ -> send_error(Req, 405, <<"Method not allowed">>)
end.
get_user(Req) ->
case handler_auth:authenticate(Req) of
{ok, AdminId, Req1} ->
case is_admin(AdminId) of
true ->
UserId = cowboy_req:binding(id, Req1),
case core_user:get_by_id(UserId) of
{ok, User} when User#user.status =:= deleted ->
send_error(Req1, 404, <<"User not found">>);
{ok, User} ->
send_json(Req1, 200, user_to_json(User));
{error, not_found} ->
send_error(Req1, 404, <<"User not found">>)
end;
false ->
send_error(Req1, 403, <<"Admin access required">>)
end;
{error, Code, Message, Req1} ->
send_error(Req1, Code, Message)
end.
update_user(Req) ->
case handler_auth:authenticate(Req) of
{ok, AdminId, Req1} ->
case is_admin(AdminId) of
true ->
UserId = 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) ->
Updates = maps:to_list(Decoded),
Converted = convert_updates(Updates),
case core_user:update(UserId, Converted) of
{ok, User} ->
send_json(Req2, 200, user_to_json(User));
{error, not_found} ->
send_error(Req2, 404, <<"User not found">>);
{error, _} ->
send_error(Req2, 500, <<"Internal server error">>)
end;
_ ->
send_error(Req2, 400, <<"Invalid JSON">>)
catch
_:_ -> send_error(Req2, 400, <<"Invalid JSON format">>)
end;
false ->
send_error(Req1, 403, <<"Admin access required">>)
end;
{error, Code, Message, Req1} ->
send_error(Req1, Code, Message)
end.
delete_user(Req) ->
case handler_auth:authenticate(Req) of
{ok, AdminId, Req1} ->
case is_admin(AdminId) of
true ->
UserId = cowboy_req:binding(id, Req1),
case core_user:delete(UserId) of
{ok, _} ->
send_json(Req1, 200, #{status => <<"deleted">>});
{error, not_found} ->
send_error(Req1, 404, <<"User not found">>)
end;
false ->
send_error(Req1, 403, <<"Admin access required">>)
end;
{error, Code, Message, Req1} ->
send_error(Req1, Code, Message)
end.
is_admin(UserId) ->
case core_user:get_by_id(UserId) of
{ok, User} -> User#user.role =:= admin;
_ -> false
end.
user_to_json(User) ->
#{
id => User#user.id,
email => User#user.email,
role => User#user.role,
status => User#user.status,
created_at => datetime_to_iso8601(User#user.created_at),
updated_at => datetime_to_iso8601(User#user.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])).
convert_updates(Updates) ->
lists:map(fun
({<<"status">>, Value}) -> {status, binary_to_existing_atom(Value)};
({<<"role">>, Value}) -> {role, binary_to_existing_atom(Value)};
(Other) -> Other
end, Updates).
send_json(Req, Status, Data) ->
Body = jsx:encode(Data),
cowboy_req:reply(Status, #{<<"content-type">> => <<"application/json">>}, Body, Req),
{ok, Body, []}.
send_error(Req, Status, Message) ->
Body = jsx:encode(#{error => Message}),
cowboy_req:reply(Status, #{<<"content-type">> => <<"application/json">>}, Body, Req),
{ok, Body, []}.