%% Feel free to use, reuse and abuse the code in this file.
%% @doc GET echo handler.
-module(toppage_handler).
-export([init/3]).
-export([handle/2]).
-export([terminate/2]).
init(_Transport, Req, []) ->
{ok, Req, undefined}.
handle(Req, State) ->
{Method, Req2} = cowboy_http_req:method(Req),
{Echo, Req3} = cowboy_http_req:qs_val(<<"echo">>, Req2),
{ok, Req4} = echo(Method, Echo, Req3),
{ok, Req4, State}.
echo('GET', undefined, Req) ->
cowboy_http_req:reply(400, [], <<"Missing echo parameter.">>, Req);
echo('GET', Echo, Req) ->
cowboy_http_req:reply(200,
[{<<"Content-Encoding">>, <<"utf-8">>}], Echo, Req);
echo(_, _, Req) ->
%% Method not allowed.
cowboy_http_req:reply(405, Req).
terminate(_Req, _State) ->
ok.
