%% Copyright (c) 2013-2018, Loïc Hoguin <essen@ninenines.eu>
%%
%% Permission to use, copy, modify, and/or distribute this software for any
%% purpose with or without fee is hereby granted, provided that the above
%% copyright notice and this permission notice appear in all copies.
%%
%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

-module(cow_mimetypes).

-export([all/1]).
-export([web/1]).

%% @doc Return the mimetype for any file by looking at its extension.

-spec all(binary()) -> {binary(), binary(), []}.
all(Path) ->
	case filename:extension(Path) of
		<<>> -> {<<"application">>, <<"octet-stream">>, []};
		%% @todo Convert to string:lowercase on OTP-20+.
		<< $., Ext/binary >> -> all_ext(list_to_binary(string:to_lower(binary_to_list(Ext))))
	end.

%% @doc Return the mimetype for a Web related file by looking at its extension.

-spec web(binary()) -> {binary(), binary(), []}.
web(Path) ->
	case filename:extension(Path) of
		<<>> -> {<<"application">>, <<"octet-stream">>, []};
		%% @todo Convert to string:lowercase on OTP-20+.
		<< $., Ext/binary >> -> web_ext(list_to_binary(string:to_lower(binary_to_list(Ext))))
	end.

%% Internal.

%% GENERATED
all_ext(_) -> {<<"application">>, <<"octet-stream">>, []}.

web_ext(<<"css">>) -> {<<"text">>, <<"css">>, []};
web_ext(<<"gif">>) -> {<<"image">>, <<"gif">>, []};
web_ext(<<"html">>) -> {<<"text">>, <<"html">>, []};
web_ext(<<"htm">>) -> {<<"text">>, <<"html">>, []};
web_ext(<<"ico">>) -> {<<"image">>, <<"x-icon">>, []};
web_ext(<<"jpeg">>) -> {<<"image">>, <<"jpeg">>, []};
web_ext(<<"jpg">>) -> {<<"image">>, <<"jpeg">>, []};
web_ext(<<"js">>) -> {<<"application">>, <<"javascript">>, []};
web_ext(<<"mp3">>) -> {<<"audio">>, <<"mpeg">>, []};
web_ext(<<"mp4">>) -> {<<"video">>, <<"mp4">>, []};
web_ext(<<"ogg">>) -> {<<"audio">>, <<"ogg">>, []};
web_ext(<<"ogv">>) -> {<<"video">>, <<"ogg">>, []};
web_ext(<<"png">>) -> {<<"image">>, <<"png">>, []};
web_ext(<<"svg">>) -> {<<"image">>, <<"svg+xml">>, []};
web_ext(<<"wav">>) -> {<<"audio">>, <<"x-wav">>, []};
web_ext(<<"webm">>) -> {<<"video">>, <<"webm">>, []};
web_ext(_) -> {<<"application">>, <<"octet-stream">>, []}.