i vibe coded itHEADmaster

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diff --git a/server/_build/default/lib/cowlib/src/cow_date.erl b/server/_build/default/lib/cowlib/src/cow_date.erl
new file mode 100644
index 0000000..00bc8af
--- /dev/null
+++ b/server/_build/default/lib/cowlib/src/cow_date.erl
@@ -0,0 +1,434 @@
+%% Copyright (c) 2013-2023, 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_date).
+
+-export([parse_date/1]).
+-export([rfc1123/1]).
+-export([rfc2109/1]).
+-export([rfc7231/1]).
+
+-ifdef(TEST).
+-include_lib("proper/include/proper.hrl").
+-endif.
+
+%% @doc Parse the HTTP date (IMF-fixdate, rfc850, asctime).
+
+-define(DIGITS(A, B), ((A - $0) * 10 + (B - $0))).
+-define(DIGITS(A, B, C, D), ((A - $0) * 1000 + (B - $0) * 100 + (C - $0) * 10 + (D - $0))).
+
+-spec parse_date(binary()) -> calendar:datetime().
+parse_date(DateBin) ->
+	Date = {{_, _, D}, {H, M, S}} = http_date(DateBin),
+	true = D >= 0 andalso D =< 31,
+	true = H >= 0 andalso H =< 23,
+	true = M >= 0 andalso M =< 59,
+	true = S >= 0 andalso S =< 60, %% Leap second.
+	Date.
+
+http_date(<<"Mon, ", D1, D2, " ", R/bits >>) -> fixdate(R, ?DIGITS(D1, D2));
+http_date(<<"Tue, ", D1, D2, " ", R/bits >>) -> fixdate(R, ?DIGITS(D1, D2));
+http_date(<<"Wed, ", D1, D2, " ", R/bits >>) -> fixdate(R, ?DIGITS(D1, D2));
+http_date(<<"Thu, ", D1, D2, " ", R/bits >>) -> fixdate(R, ?DIGITS(D1, D2));
+http_date(<<"Fri, ", D1, D2, " ", R/bits >>) -> fixdate(R, ?DIGITS(D1, D2));
+http_date(<<"Sat, ", D1, D2, " ", R/bits >>) -> fixdate(R, ?DIGITS(D1, D2));
+http_date(<<"Sun, ", D1, D2, " ", R/bits >>) -> fixdate(R, ?DIGITS(D1, D2));
+http_date(<<"Monday, ", D1, D2, "-", R/bits >>) -> rfc850_date(R, ?DIGITS(D1, D2));
+http_date(<<"Tuesday, ", D1, D2, "-", R/bits >>) -> rfc850_date(R, ?DIGITS(D1, D2));
+http_date(<<"Wednesday, ", D1, D2, "-", R/bits >>) -> rfc850_date(R, ?DIGITS(D1, D2));
+http_date(<<"Thursday, ", D1, D2, "-", R/bits >>) -> rfc850_date(R, ?DIGITS(D1, D2));
+http_date(<<"Friday, ", D1, D2, "-", R/bits >>) -> rfc850_date(R, ?DIGITS(D1, D2));
+http_date(<<"Saturday, ", D1, D2, "-", R/bits >>) -> rfc850_date(R, ?DIGITS(D1, D2));
+http_date(<<"Sunday, ", D1, D2, "-", R/bits >>) -> rfc850_date(R, ?DIGITS(D1, D2));
+http_date(<<"Mon ", R/bits >>) -> asctime_date(R);
+http_date(<<"Tue ", R/bits >>) -> asctime_date(R);
+http_date(<<"Wed ", R/bits >>) -> asctime_date(R);
+http_date(<<"Thu ", R/bits >>) -> asctime_date(R);
+http_date(<<"Fri ", R/bits >>) -> asctime_date(R);
+http_date(<<"Sat ", R/bits >>) -> asctime_date(R);
+http_date(<<"Sun ", R/bits >>) -> asctime_date(R).
+
+fixdate(<<"Jan ", Y1, Y2, Y3, Y4, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 1, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+fixdate(<<"Feb ", Y1, Y2, Y3, Y4, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 2, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+fixdate(<<"Mar ", Y1, Y2, Y3, Y4, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 3, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+fixdate(<<"Apr ", Y1, Y2, Y3, Y4, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 4, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+fixdate(<<"May ", Y1, Y2, Y3, Y4, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 5, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+fixdate(<<"Jun ", Y1, Y2, Y3, Y4, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 6, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+fixdate(<<"Jul ", Y1, Y2, Y3, Y4, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 7, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+fixdate(<<"Aug ", Y1, Y2, Y3, Y4, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 8, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+fixdate(<<"Sep ", Y1, Y2, Y3, Y4, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 9, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+fixdate(<<"Oct ", Y1, Y2, Y3, Y4, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 10, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+fixdate(<<"Nov ", Y1, Y2, Y3, Y4, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 11, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+fixdate(<<"Dec ", Y1, Y2, Y3, Y4, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 12, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}}.
+
+rfc850_date(<<"Jan-", Y1, Y2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{rfc850_year(?DIGITS(Y1, Y2)), 1, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+rfc850_date(<<"Feb-", Y1, Y2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{rfc850_year(?DIGITS(Y1, Y2)), 2, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+rfc850_date(<<"Mar-", Y1, Y2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{rfc850_year(?DIGITS(Y1, Y2)), 3, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+rfc850_date(<<"Apr-", Y1, Y2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{rfc850_year(?DIGITS(Y1, Y2)), 4, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+rfc850_date(<<"May-", Y1, Y2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{rfc850_year(?DIGITS(Y1, Y2)), 5, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+rfc850_date(<<"Jun-", Y1, Y2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{rfc850_year(?DIGITS(Y1, Y2)), 6, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+rfc850_date(<<"Jul-", Y1, Y2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{rfc850_year(?DIGITS(Y1, Y2)), 7, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+rfc850_date(<<"Aug-", Y1, Y2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{rfc850_year(?DIGITS(Y1, Y2)), 8, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+rfc850_date(<<"Sep-", Y1, Y2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{rfc850_year(?DIGITS(Y1, Y2)), 9, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+rfc850_date(<<"Oct-", Y1, Y2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{rfc850_year(?DIGITS(Y1, Y2)), 10, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+rfc850_date(<<"Nov-", Y1, Y2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{rfc850_year(?DIGITS(Y1, Y2)), 11, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+rfc850_date(<<"Dec-", Y1, Y2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " GMT">>, Day) ->
+	{{rfc850_year(?DIGITS(Y1, Y2)), 12, Day}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}}.
+
+rfc850_year(Y) when Y > 50 -> Y + 1900;
+rfc850_year(Y) -> Y + 2000.
+
+asctime_date(<<"Jan ", D1, D2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " ", Y1, Y2, Y3, Y4 >>) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 1, asctime_day(D1, D2)}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+asctime_date(<<"Feb ", D1, D2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " ", Y1, Y2, Y3, Y4 >>) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 2, asctime_day(D1, D2)}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+asctime_date(<<"Mar ", D1, D2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " ", Y1, Y2, Y3, Y4 >>) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 3, asctime_day(D1, D2)}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+asctime_date(<<"Apr ", D1, D2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " ", Y1, Y2, Y3, Y4 >>) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 4, asctime_day(D1, D2)}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+asctime_date(<<"May ", D1, D2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " ", Y1, Y2, Y3, Y4 >>) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 5, asctime_day(D1, D2)}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+asctime_date(<<"Jun ", D1, D2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " ", Y1, Y2, Y3, Y4 >>) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 6, asctime_day(D1, D2)}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+asctime_date(<<"Jul ", D1, D2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " ", Y1, Y2, Y3, Y4 >>) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 7, asctime_day(D1, D2)}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+asctime_date(<<"Aug ", D1, D2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " ", Y1, Y2, Y3, Y4 >>) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 8, asctime_day(D1, D2)}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+asctime_date(<<"Sep ", D1, D2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " ", Y1, Y2, Y3, Y4 >>) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 9, asctime_day(D1, D2)}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+asctime_date(<<"Oct ", D1, D2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " ", Y1, Y2, Y3, Y4 >>) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 10, asctime_day(D1, D2)}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+asctime_date(<<"Nov ", D1, D2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " ", Y1, Y2, Y3, Y4 >>) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 11, asctime_day(D1, D2)}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}};
+asctime_date(<<"Dec ", D1, D2, " ", H1, H2, ":", M1, M2, ":", S1, S2, " ", Y1, Y2, Y3, Y4 >>) ->
+	{{?DIGITS(Y1, Y2, Y3, Y4), 12, asctime_day(D1, D2)}, {?DIGITS(H1, H2), ?DIGITS(M1, M2), ?DIGITS(S1, S2)}}.
+
+asctime_day($\s, D2) -> (D2 - $0);
+asctime_day(D1, D2) -> (D1 - $0) * 10 + (D2 - $0).
+
+-ifdef(TEST).
+day_name() -> oneof(["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]).
+day_name_l() -> oneof(["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]).
+year() -> integer(1951, 2050).
+month() -> integer(1, 12).
+day() -> integer(1, 31).
+hour() -> integer(0, 23).
+minute() -> integer(0, 59).
+second() -> integer(0, 60).
+
+fixdate_gen() ->
+	?LET({DayName, Y, Mo, D, H, Mi, S},
+		{day_name(), year(), month(), day(), hour(), minute(), second()},
+		{{{Y, Mo, D}, {H, Mi, S}},
+			list_to_binary([DayName, ", ", pad_int(D), " ", month(Mo), " ", integer_to_binary(Y),
+			" ", pad_int(H), ":", pad_int(Mi), ":", pad_int(S), " GMT"])}).
+
+rfc850_gen() ->
+	?LET({DayName, Y, Mo, D, H, Mi, S},
+		{day_name_l(), year(), month(), day(), hour(), minute(), second()},
+		{{{Y, Mo, D}, {H, Mi, S}},
+			list_to_binary([DayName, ", ", pad_int(D), "-", month(Mo), "-", pad_int(Y rem 100),
+			" ", pad_int(H), ":", pad_int(Mi), ":", pad_int(S), " GMT"])}).
+
+asctime_gen() ->
+	?LET({DayName, Y, Mo, D, H, Mi, S},
+		{day_name(), year(), month(), day(), hour(), minute(), second()},
+		{{{Y, Mo, D}, {H, Mi, S}},
+			list_to_binary([DayName, " ", month(Mo), " ",
+			if D < 10 -> << $\s, (D + $0) >>; true -> integer_to_binary(D) end,
+			" ", pad_int(H), ":", pad_int(Mi), ":", pad_int(S), " ", integer_to_binary(Y)])}).
+
+prop_http_date() ->
+	?FORALL({Date, DateBin},
+		oneof([fixdate_gen(), rfc850_gen(), asctime_gen()]),
+		Date =:= parse_date(DateBin)).
+
+http_date_test_() ->
+	Tests = [
+		{<<"Sun, 06 Nov 1994 08:49:37 GMT">>, {{1994, 11, 6}, {8, 49, 37}}},
+		{<<"Sunday, 06-Nov-94 08:49:37 GMT">>, {{1994, 11, 6}, {8, 49, 37}}},
+		{<<"Sun Nov  6 08:49:37 1994">>, {{1994, 11, 6}, {8, 49, 37}}}
+	],
+	[{V, fun() -> R = http_date(V) end} || {V, R} <- Tests].
+
+horse_http_date_fixdate() ->
+	horse:repeat(200000,
+		http_date(<<"Sun, 06 Nov 1994 08:49:37 GMT">>)
+	).
+
+horse_http_date_rfc850() ->
+	horse:repeat(200000,
+		http_date(<<"Sunday, 06-Nov-94 08:49:37 GMT">>)
+	).
+
+horse_http_date_asctime() ->
+	horse:repeat(200000,
+		http_date(<<"Sun Nov  6 08:49:37 1994">>)
+	).
+-endif.
+
+%% @doc Return the date formatted according to RFC1123.
+
+-spec rfc1123(calendar:datetime()) -> binary().
+rfc1123(DateTime) ->
+	rfc7231(DateTime).
+
+%% @doc Return the date formatted according to RFC2109.
+
+-spec rfc2109(calendar:datetime()) -> binary().
+rfc2109({Date = {Y, Mo, D}, {H, Mi, S}}) ->
+	Wday = calendar:day_of_the_week(Date),
+	<<	(weekday(Wday))/binary, ", ",
+		(pad_int(D))/binary, "-",
+		(month(Mo))/binary, "-",
+		(year(Y))/binary, " ",
+		(pad_int(H))/binary, ":",
+		(pad_int(Mi))/binary, ":",
+		(pad_int(S))/binary, " GMT" >>.
+
+-ifdef(TEST).
+rfc2109_test_() ->
+	Tests = [
+		{<<"Sat, 14-May-2011 14:25:33 GMT">>, {{2011, 5, 14}, {14, 25, 33}}},
+		{<<"Sun, 01-Jan-2012 00:00:00 GMT">>, {{2012, 1,  1}, { 0,  0,  0}}}
+	],
+	[{R, fun() -> R = rfc2109(D) end} || {R, D} <- Tests].
+
+horse_rfc2109_20130101_000000() ->
+	horse:repeat(100000,
+		rfc2109({{2013, 1, 1}, {0, 0, 0}})
+	).
+
+horse_rfc2109_20131231_235959() ->
+	horse:repeat(100000,
+		rfc2109({{2013, 12, 31}, {23, 59, 59}})
+	).
+
+horse_rfc2109_12340506_070809() ->
+	horse:repeat(100000,
+		rfc2109({{1234, 5, 6}, {7, 8, 9}})
+	).
+-endif.
+
+%% @doc Return the date formatted according to RFC7231.
+
+-spec rfc7231(calendar:datetime()) -> binary().
+rfc7231({Date = {Y, Mo, D}, {H, Mi, S}}) ->
+	Wday = calendar:day_of_the_week(Date),
+	<<	(weekday(Wday))/binary, ", ",
+		(pad_int(D))/binary, " ",
+		(month(Mo))/binary, " ",
+		(year(Y))/binary, " ",
+		(pad_int(H))/binary, ":",
+		(pad_int(Mi))/binary, ":",
+		(pad_int(S))/binary, " GMT" >>.
+
+-ifdef(TEST).
+rfc7231_test_() ->
+	Tests = [
+		{<<"Sat, 14 May 2011 14:25:33 GMT">>, {{2011, 5, 14}, {14, 25, 33}}},
+		{<<"Sun, 01 Jan 2012 00:00:00 GMT">>, {{2012, 1,  1}, { 0,  0,  0}}}
+	],
+	[{R, fun() -> R = rfc7231(D) end} || {R, D} <- Tests].
+
+horse_rfc7231_20130101_000000() ->
+	horse:repeat(100000,
+		rfc7231({{2013, 1, 1}, {0, 0, 0}})
+	).
+
+horse_rfc7231_20131231_235959() ->
+	horse:repeat(100000,
+		rfc7231({{2013, 12, 31}, {23, 59, 59}})
+	).
+
+horse_rfc7231_12340506_070809() ->
+	horse:repeat(100000,
+		rfc7231({{1234, 5, 6}, {7, 8, 9}})
+	).
+-endif.
+
+%% Internal.
+
+-spec pad_int(0..59) -> <<_:16>>.
+pad_int( 0) -> <<"00">>;
+pad_int( 1) -> <<"01">>;
+pad_int( 2) -> <<"02">>;
+pad_int( 3) -> <<"03">>;
+pad_int( 4) -> <<"04">>;
+pad_int( 5) -> <<"05">>;
+pad_int( 6) -> <<"06">>;
+pad_int( 7) -> <<"07">>;
+pad_int( 8) -> <<"08">>;
+pad_int( 9) -> <<"09">>;
+pad_int(10) -> <<"10">>;
+pad_int(11) -> <<"11">>;
+pad_int(12) -> <<"12">>;
+pad_int(13) -> <<"13">>;
+pad_int(14) -> <<"14">>;
+pad_int(15) -> <<"15">>;
+pad_int(16) -> <<"16">>;
+pad_int(17) -> <<"17">>;
+pad_int(18) -> <<"18">>;
+pad_int(19) -> <<"19">>;
+pad_int(20) -> <<"20">>;
+pad_int(21) -> <<"21">>;
+pad_int(22) -> <<"22">>;
+pad_int(23) -> <<"23">>;
+pad_int(24) -> <<"24">>;
+pad_int(25) -> <<"25">>;
+pad_int(26) -> <<"26">>;
+pad_int(27) -> <<"27">>;
+pad_int(28) -> <<"28">>;
+pad_int(29) -> <<"29">>;
+pad_int(30) -> <<"30">>;
+pad_int(31) -> <<"31">>;
+pad_int(32) -> <<"32">>;
+pad_int(33) -> <<"33">>;
+pad_int(34) -> <<"34">>;
+pad_int(35) -> <<"35">>;
+pad_int(36) -> <<"36">>;
+pad_int(37) -> <<"37">>;
+pad_int(38) -> <<"38">>;
+pad_int(39) -> <<"39">>;
+pad_int(40) -> <<"40">>;
+pad_int(41) -> <<"41">>;
+pad_int(42) -> <<"42">>;
+pad_int(43) -> <<"43">>;
+pad_int(44) -> <<"44">>;
+pad_int(45) -> <<"45">>;
+pad_int(46) -> <<"46">>;
+pad_int(47) -> <<"47">>;
+pad_int(48) -> <<"48">>;
+pad_int(49) -> <<"49">>;
+pad_int(50) -> <<"50">>;
+pad_int(51) -> <<"51">>;
+pad_int(52) -> <<"52">>;
+pad_int(53) -> <<"53">>;
+pad_int(54) -> <<"54">>;
+pad_int(55) -> <<"55">>;
+pad_int(56) -> <<"56">>;
+pad_int(57) -> <<"57">>;
+pad_int(58) -> <<"58">>;
+pad_int(59) -> <<"59">>;
+pad_int(60) -> <<"60">>;
+pad_int(Int) -> integer_to_binary(Int).
+
+-spec weekday(1..7) -> <<_:24>>.
+weekday(1) -> <<"Mon">>;
+weekday(2) -> <<"Tue">>;
+weekday(3) -> <<"Wed">>;
+weekday(4) -> <<"Thu">>;
+weekday(5) -> <<"Fri">>;
+weekday(6) -> <<"Sat">>;
+weekday(7) -> <<"Sun">>.
+
+-spec month(1..12) -> <<_:24>>.
+month( 1) -> <<"Jan">>;
+month( 2) -> <<"Feb">>;
+month( 3) -> <<"Mar">>;
+month( 4) -> <<"Apr">>;
+month( 5) -> <<"May">>;
+month( 6) -> <<"Jun">>;
+month( 7) -> <<"Jul">>;
+month( 8) -> <<"Aug">>;
+month( 9) -> <<"Sep">>;
+month(10) -> <<"Oct">>;
+month(11) -> <<"Nov">>;
+month(12) -> <<"Dec">>.
+
+-spec year(pos_integer()) -> <<_:32>>.
+year(1970) -> <<"1970">>;
+year(1971) -> <<"1971">>;
+year(1972) -> <<"1972">>;
+year(1973) -> <<"1973">>;
+year(1974) -> <<"1974">>;
+year(1975) -> <<"1975">>;
+year(1976) -> <<"1976">>;
+year(1977) -> <<"1977">>;
+year(1978) -> <<"1978">>;
+year(1979) -> <<"1979">>;
+year(1980) -> <<"1980">>;
+year(1981) -> <<"1981">>;
+year(1982) -> <<"1982">>;
+year(1983) -> <<"1983">>;
+year(1984) -> <<"1984">>;
+year(1985) -> <<"1985">>;
+year(1986) -> <<"1986">>;
+year(1987) -> <<"1987">>;
+year(1988) -> <<"1988">>;
+year(1989) -> <<"1989">>;
+year(1990) -> <<"1990">>;
+year(1991) -> <<"1991">>;
+year(1992) -> <<"1992">>;
+year(1993) -> <<"1993">>;
+year(1994) -> <<"1994">>;
+year(1995) -> <<"1995">>;
+year(1996) -> <<"1996">>;
+year(1997) -> <<"1997">>;
+year(1998) -> <<"1998">>;
+year(1999) -> <<"1999">>;
+year(2000) -> <<"2000">>;
+year(2001) -> <<"2001">>;
+year(2002) -> <<"2002">>;
+year(2003) -> <<"2003">>;
+year(2004) -> <<"2004">>;
+year(2005) -> <<"2005">>;
+year(2006) -> <<"2006">>;
+year(2007) -> <<"2007">>;
+year(2008) -> <<"2008">>;
+year(2009) -> <<"2009">>;
+year(2010) -> <<"2010">>;
+year(2011) -> <<"2011">>;
+year(2012) -> <<"2012">>;
+year(2013) -> <<"2013">>;
+year(2014) -> <<"2014">>;
+year(2015) -> <<"2015">>;
+year(2016) -> <<"2016">>;
+year(2017) -> <<"2017">>;
+year(2018) -> <<"2018">>;
+year(2019) -> <<"2019">>;
+year(2020) -> <<"2020">>;
+year(2021) -> <<"2021">>;
+year(2022) -> <<"2022">>;
+year(2023) -> <<"2023">>;
+year(2024) -> <<"2024">>;
+year(2025) -> <<"2025">>;
+year(2026) -> <<"2026">>;
+year(2027) -> <<"2027">>;
+year(2028) -> <<"2028">>;
+year(2029) -> <<"2029">>;
+year(Year) -> integer_to_binary(Year).