themis

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

-export([create_record/2, increment_by/3, increment/2, delete_record/2, print/2, new_name/1, new/2]).
-export_type([counter/0, counter_error/0]).

-type counter() :: any().

-type counter_error() :: record_already_exists |
    record_not_found |
    {name_error, internal@metric:metric_error()}.

-file("/git/Themis/src/internal/metric/counter.gleam", 34).
-spec create_record(
    internal@metric:metric(counter(), internal@prometheus:number_()),
    internal@label:label_set()
) -> {ok, internal@metric:metric(counter(), internal@prometheus:number_())} |
    {error, counter_error()}.
create_record(From, Labels) ->
    gleam@bool:guard(
        gleam@dict:has_key(erlang:element(3, From), Labels),
        {error, record_already_exists},
        fun() ->
            {ok,
                erlang:setelement(
                    3,
                    From,
                    begin
                        _pipe = erlang:element(3, From),
                        gleam@dict:insert(_pipe, Labels, {int, 0})
                    end
                )}
        end
    ).

-file("/git/Themis/src/internal/metric/counter.gleam", 57).
-spec increment_by(
    internal@metric:metric(counter(), internal@prometheus:number_()),
    internal@label:label_set(),
    internal@prometheus:number_()
) -> {ok, internal@metric:metric(counter(), internal@prometheus:number_())} |
    {error, counter_error()}.
increment_by(From, Labels, By) ->
    New_val_result = case gleam_stdlib:map_get(erlang:element(3, From), Labels) of
        {error, _} ->
            {error, record_not_found};

        {ok, Number} ->
            {ok, themis@number:add(Number, By)}
    end,
    gleam@result:map(
        New_val_result,
        fun(New_val) ->
            erlang:setelement(
                3,
                From,
                begin
                    _pipe = erlang:element(3, From),
                    gleam@dict:insert(_pipe, Labels, New_val)
                end
            )
        end
    ).

-file("/git/Themis/src/internal/metric/counter.gleam", 50).
-spec increment(
    internal@metric:metric(counter(), internal@prometheus:number_()),
    internal@label:label_set()
) -> {ok, internal@metric:metric(counter(), internal@prometheus:number_())} |
    {error, counter_error()}.
increment(From, Labels) ->
    increment_by(From, Labels, {int, 1}).

-file("/git/Themis/src/internal/metric/counter.gleam", 70).
-spec delete_record(
    internal@metric:metric(counter(), internal@prometheus:number_()),
    internal@label:label_set()
) -> internal@metric:metric(counter(), internal@prometheus:number_()).
delete_record(From, Labels) ->
    erlang:setelement(
        3,
        From,
        gleam@dict:delete(erlang:element(3, From), Labels)
    ).

-file("/git/Themis/src/internal/metric/counter.gleam", 77).
-spec print(
    internal@metric:metric(counter(), internal@prometheus:number_()),
    internal@metric:metric_name()
) -> binary().
print(Metric, Name) ->
    Name@1 = internal@metric:name_to_string(Name),
    Help = <<<<<<"# HELP "/utf8, Name@1/binary>>/binary, " "/utf8>>/binary,
        (erlang:element(2, Metric))/binary>>,
    Type_ = <<<<"# TYPE "/utf8, Name@1/binary>>/binary, " counter"/utf8>>,
    _pipe = (gleam@dict:fold(
        erlang:element(3, Metric),
        [<<<<<<Help/binary, "\n"/utf8>>/binary, Type_/binary>>/binary,
                "\n"/utf8>>],
        fun(Current, Labels, Value) ->
            [<<<<<<<<Name@1/binary, (internal@label:print(Labels))/binary>>/binary,
                            " "/utf8>>/binary,
                        (internal@prometheus:print(Value))/binary>>/binary,
                    "\n"/utf8>> |
                Current]
        end
    )),
    _pipe@1 = lists:reverse(_pipe),
    _pipe@2 = gleam_stdlib:identity(_pipe@1),
    unicode:characters_to_binary(_pipe@2).

-file("/git/Themis/src/internal/metric/counter.gleam", 98).
-spec new_name(binary()) -> {ok, internal@metric:metric_name()} |
    {error, internal@metric:metric_error()}.
new_name(Name) ->
    _pipe = (<<Name/binary, "_total"/utf8>>),
    internal@metric:new_name(_pipe, [<<"counter"/utf8>>]).

-file("/git/Themis/src/internal/metric/counter.gleam", 23).
-spec new(binary(), binary()) -> {ok,
        {internal@metric:metric_name(),
            internal@metric:metric(counter(), internal@prometheus:number_())}} |
    {error, internal@metric:metric_error()}.
new(Name, Description) ->
    R = begin
        _pipe = Name,
        new_name(_pipe)
    end,
    gleam@result:map(
        R,
        fun(Name@1) -> {Name@1, {metric, Description, maps:new()}} end
    ).