41 lines
1.5 KiB
Erlang
41 lines
1.5 KiB
Erlang
-module(geef_sig).
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-include("geef_records.hrl").
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-type time() :: {erlang:timestamp(), non_neg_integer()}.
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-type signature() :: #geef_signature{}.
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-export_type([time/0, signature/0]).
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-export([default/1, now/2]).
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-export([convert/4]).
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%% @doc Create a signature for the repository's configured username and
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%% email, with a timestamp of now.
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-spec default(pid()) -> {ok, signature()} | {error, term()}.
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default(Repo) ->
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RepoHandle = geef_repo:handle(Repo),
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case geef_nif:signature_default(RepoHandle) of
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{ok, Name, Email, Timestamp, Offset} ->
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{ok, convert(Name, Email, Timestamp, Offset)};
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Err = {error, _} ->
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Err
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end.
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%% @doc Create a signature with the specified username and email, with
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%% a timestamp of now
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now(Name, Email) ->
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Now = now(),
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%% We ask two questions "what's the time here?" and "what's the
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%% time in UTC-Land?". The difference in minutes is our offset.
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Local = calendar:datetime_to_gregorian_seconds(calendar:now_to_local_time(Now)),
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UTC = calendar:datetime_to_gregorian_seconds(calendar:now_to_universal_time(Now)),
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Offset = (Local - UTC) div 60,
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#geef_signature{name=Name, email=Email, time={Now, Offset}}.
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%% @private
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%% @doc convert the return from the NIF to a signature
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-spec convert(iolist(), iolist(), non_neg_integer(), non_neg_integer()) -> signature().
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convert(Name, Email, Timestamp, Offset) ->
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Time = {{Timestamp div 1000000, Timestamp rem 1000000, 0}, Offset},
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#geef_signature{name=Name, email=Email, time=Time}.
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