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

-export([new_name/2, name_to_string/1]).
-export_type([metric_error/0, metric_name/0, metric/2]).

-type metric_error() :: invalid_metric_name | {invalid_word_in_name, binary()}.

-opaque metric_name() :: {metric_name, binary()}.

-type metric(GLE, GLF) :: {metric,
        binary(),
        gleam@dict:dict(internal@label:label_set(), GLF)} |
    {gleam_phantom, GLE}.

-file("/git/Themis/src/internal/metric.gleam", 29).
-spec new_name(binary(), list(binary())) -> {ok, metric_name()} |
    {error, metric_error()}.
new_name(From, Blacklist) ->
    R = (gleam@list:try_each(
        Blacklist,
        fun(Word) -> case gleam_stdlib:contains_string(From, Word) of
                false ->
                    {ok, nil};

                true ->
                    {error, {invalid_word_in_name, Word}}
            end end
    )),
    gleam@result:'try'(
        R,
        fun(_) -> case internal@prometheus:is_valid_name(From) of
                false ->
                    {error, invalid_metric_name};

                true ->
                    {ok, {metric_name, From}}
            end end
    ).

-file("/git/Themis/src/internal/metric.gleam", 47).
-spec name_to_string(metric_name()) -> binary().
name_to_string(From) ->
    erlang:element(2, From).