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51 lines
1.3 KiB
Erlang
51 lines
1.3 KiB
Erlang
%% Feel free to use, reuse and abuse the code in this file.
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%% @doc Directory handler.
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-module(directory_handler).
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%% REST Callbacks
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-export([init/3]).
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-export([rest_init/2]).
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-export([allowed_methods/2]).
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-export([resource_exists/2]).
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-export([content_types_provided/2]).
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%% Callback Callbacks
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-export([list_json/2]).
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-export([list_html/2]).
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init(_Transport, _Req, _Paths) ->
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{upgrade, protocol, cowboy_rest}.
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rest_init(Req, Paths) ->
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{ok, Req, Paths}.
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allowed_methods(Req, State) ->
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{[<<"GET">>], Req, State}.
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resource_exists(Req, {ReqPath, FilePath}) ->
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case file:list_dir(FilePath) of
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{ok, Fs} -> {true, Req, {ReqPath, lists:sort(Fs)}};
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_Err -> {false, Req, {ReqPath, FilePath}}
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end.
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content_types_provided(Req, State) ->
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{[
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{{<<"application">>, <<"json">>, []}, list_json},
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{{<<"text">>, <<"html">>, []}, list_html}
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], Req, State}.
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list_json(Req, {Path, Fs}) ->
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Files = [[ <<(list_to_binary(F))/binary>> || F <- Fs ]],
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{jsx:encode(Files), Req, Path}.
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list_html(Req, {Path, Fs}) ->
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Body = [[ links(Path, F) || F <- [".."|Fs] ]],
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HTML = [<<"<!DOCTYPE html><html><head><title>Index</title></head>",
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"<body>">>, Body, <<"</body></html>\n">>],
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{HTML, Req, Path}.
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links(<<>>, File) ->
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["<a href='/", File, "'>", File, "</a><br>\n"];
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links(Prefix, File) ->
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["<a href='/", Prefix, $/, File, "'>", File, "</a><br>\n"].
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