-module(caffeine_lang@cql@resolver).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/caffeine_lang/cql/resolver.gleam").
-export([resolve_primitives/1]).
-export_type([primitives/0]).

-type primitives() :: {good_over_total,
        caffeine_lang@cql@parser:exp(),
        caffeine_lang@cql@parser:exp()}.

-file("src/caffeine_lang/cql/resolver.gleam", 18).
-spec find_division_in_exp(caffeine_lang@cql@parser:exp()) -> {ok, primitives()} |
    {error, binary()}.
find_division_in_exp(Exp) ->
    case Exp of
        {operator_expr, Left, {operator_expr, Num, Denom, 'div'}, _} ->
            {ok, {good_over_total, {operator_expr, Left, Num, add}, Denom}};

        {operator_expr, Left@1, Right, 'div'} ->
            {ok, {good_over_total, Left@1, Right}};

        _ ->
            {error, <<"Invalid expression"/utf8>>}
    end.

-file("src/caffeine_lang/cql/resolver.gleam", 10).
-spec resolve_primitives(caffeine_lang@cql@parser:exp_container()) -> {ok,
        primitives()} |
    {error, binary()}.
resolve_primitives(Exp_container) ->
    case Exp_container of
        {exp_container, Exp} ->
            find_division_in_exp(Exp)
    end.