-module(internal@prometheus).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([print/1, is_valid_name/1, is_valid_label/1]).
-export_type([number_/0]).

-type number_() :: pos_inf | neg_inf | na_n | {dec, float()} | {int, integer()}.

-file("/git/Themis/src/internal/prometheus.gleam", 33).
-spec print(number_()) -> binary().
print(Number) ->
    case Number of
        {dec, Val} ->
            gleam_stdlib:float_to_string(Val);

        {int, Val@1} ->
            erlang:integer_to_binary(Val@1);

        na_n ->
            <<"NaN"/utf8>>;

        neg_inf ->
            <<"-Inf"/utf8>>;

        pos_inf ->
            <<"+Inf"/utf8>>
    end.

-file("/git/Themis/src/internal/prometheus.gleam", 17).
-spec is_valid_name(binary()) -> boolean().
is_valid_name(Name) ->
    _assert_subject = begin
        _pipe = <<"^[a-zA-Z][a-zA-Z0-9_:]*$"/utf8>>,
        gleam@regexp:from_string(_pipe)
    end,
    {ok, Reg} = case _assert_subject of
        {ok, _} -> _assert_subject;
        _assert_fail ->
            erlang:error(#{gleam_error => let_assert,
                        message => <<"Pattern match failed, no pattern matched the value."/utf8>>,
                        value => _assert_fail,
                        module => <<"internal/prometheus"/utf8>>,
                        function => <<"is_valid_name"/utf8>>,
                        line => 18})
    end,
    _pipe@1 = Reg,
    gleam@regexp:check(_pipe@1, Name).

-file("/git/Themis/src/internal/prometheus.gleam", 25).
-spec is_valid_label(binary()) -> boolean().
is_valid_label(Label) ->
    _assert_subject = begin
        _pipe = <<"^[a-zA-Z][a-zA-Z0-9_]*$"/utf8>>,
        gleam@regexp:from_string(_pipe)
    end,
    {ok, Reg} = case _assert_subject of
        {ok, _} -> _assert_subject;
        _assert_fail ->
            erlang:error(#{gleam_error => let_assert,
                        message => <<"Pattern match failed, no pattern matched the value."/utf8>>,
                        value => _assert_fail,
                        module => <<"internal/prometheus"/utf8>>,
                        function => <<"is_valid_label"/utf8>>,
                        line => 26})
    end,
    _pipe@1 = Reg,
    gleam@regexp:check(_pipe@1, Label).