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29 lines
828 B
Erlang
29 lines
828 B
Erlang
%% Feel free to use, reuse and abuse the code in this file.
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%% @doc POST echo handler.
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-module(toppage_h).
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-export([init/2]).
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init(Req0, Opts) ->
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Method = cowboy_req:method(Req0),
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HasBody = cowboy_req:has_body(Req0),
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Req = maybe_echo(Method, HasBody, Req0),
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{ok, Req, Opts}.
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maybe_echo(<<"POST">>, true, Req0) ->
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{ok, PostVals, Req} = cowboy_req:read_urlencoded_body(Req0),
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Echo = proplists:get_value(<<"echo">>, PostVals),
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echo(Echo, Req);
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maybe_echo(<<"POST">>, false, Req) ->
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cowboy_req:reply(400, [], <<"Missing body.">>, Req);
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maybe_echo(_, _, Req) ->
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%% Method not allowed.
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cowboy_req:reply(405, Req).
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echo(undefined, Req) ->
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cowboy_req:reply(400, [], <<"Missing echo parameter.">>, Req);
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echo(Echo, Req) ->
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cowboy_req:reply(200, #{
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<<"content-type">> => <<"text/plain; charset=utf-8">>
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}, Echo, Req).
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