-module(gopenai@tool).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([tool_type_from_json/1, validate_property/1, tool_to_json/1, tools_to_json/1, function_call_from_json/1]).
-export_type([tool_type/0, data_type/0, function_property/0, function_parameters/0, function_/0, tool/0, value/0, function_call/0, tool_call/0]).

-type tool_type() :: function_type.

-type data_type() :: string_type |
    number_type |
    array_type |
    boolean_type |
    null_type |
    object_type.

-type function_property() :: {function_property,
        data_type(),
        binary(),
        gleam@option:option(list(binary()))}.

-type function_parameters() :: {function_parameters,
        data_type(),
        gleam@dict:dict(binary(), function_property()),
        list(binary())}.

-type function_() :: {function,
        binary(),
        binary(),
        gleam@option:option(function_parameters())}.

-type tool() :: {tool, tool_type(), function_()}.

-type value() :: int | float | string.

-type function_call() :: {function_call, binary(), binary()}.

-type tool_call() :: {tool_call, binary(), tool_type(), function_call()}.

-spec tool_type_to_json(tool_type()) -> gleam@json:json().
tool_type_to_json(Tool_type) ->
    _pipe = case Tool_type of
        function_type ->
            <<"function"/utf8>>
    end,
    gleam@json:string(_pipe).

-spec tool_type_from_json(gleam@dynamic:dynamic_()) -> {ok, tool_type()} |
    {error, list(gleam@dynamic:decode_error())}.
tool_type_from_json(Data) ->
    case gleam@dynamic:string(Data) of
        {ok, Str} ->
            case Str of
                <<"function"/utf8>> ->
                    {ok, function_type};

                Default ->
                    {error,
                        [{decode_error, <<"valid tool type"/utf8>>, Default, []}]}
            end;

        {error, E} ->
            {error, E}
    end.

-spec data_type_to_json(data_type()) -> gleam@json:json().
data_type_to_json(Data_type) ->
    _pipe = case Data_type of
        string_type ->
            <<"string"/utf8>>;

        number_type ->
            <<"number"/utf8>>;

        array_type ->
            <<"array"/utf8>>;

        boolean_type ->
            <<"boolean"/utf8>>;

        null_type ->
            <<"null"/utf8>>;

        object_type ->
            <<"object"/utf8>>
    end,
    gleam@json:string(_pipe).

-spec function_property_to_json(function_property()) -> gleam@json:json().
function_property_to_json(Prop) ->
    gleam@json:object(
        [{<<"type"/utf8>>, data_type_to_json(erlang:element(2, Prop))},
            {<<"description"/utf8>>, gleam@json:string(erlang:element(3, Prop))}]
    ).

-spec validate_property(function_property()) -> boolean().
validate_property(Prop) ->
    case erlang:element(2, Prop) of
        string_type ->
            true;

        _ ->
            false
    end.

-spec function_paramteres_to_json(gleam@option:option(function_parameters())) -> gleam@json:json().
function_paramteres_to_json(Parameters) ->
    case Parameters of
        {some, Params} ->
            gleam@json:object(
                [{<<"type"/utf8>>, data_type_to_json(erlang:element(2, Params))},
                    {<<"properties"/utf8>>,
                        gleam@json:object(
                            begin
                                _pipe = gleam@dict:map_values(
                                    erlang:element(3, Params),
                                    fun(_, Value) ->
                                        function_property_to_json(Value)
                                    end
                                ),
                                maps:to_list(_pipe)
                            end
                        )},
                    {<<"required"/utf8>>,
                        gleam@json:array(
                            erlang:element(4, Params),
                            fun gleam@json:string/1
                        )}]
            );

        none ->
            gleam@json:null()
    end.

-spec function_to_json(function_()) -> gleam@json:json().
function_to_json(Function) ->
    gleam@json:object(
        [{<<"description"/utf8>>,
                gleam@json:string(erlang:element(2, Function))},
            {<<"name"/utf8>>, gleam@json:string(erlang:element(3, Function))},
            {<<"parameters"/utf8>>,
                function_paramteres_to_json(erlang:element(4, Function))}]
    ).

-spec tool_to_json(tool()) -> gleam@json:json().
tool_to_json(Tool) ->
    gleam@json:object(
        [{<<"type"/utf8>>, tool_type_to_json(erlang:element(2, Tool))},
            {<<"function"/utf8>>, function_to_json(erlang:element(3, Tool))}]
    ).

-spec tools_to_json(gleam@option:option(list(tool()))) -> gleam@json:json().
tools_to_json(Tools) ->
    case Tools of
        {some, Ts} ->
            gleam@json:array(Ts, fun tool_to_json/1);

        none ->
            gleam@json:null()
    end.

-spec function_call_from_json(gleam@dynamic:dynamic_()) -> {ok, function_call()} |
    {error, list(gleam@dynamic:decode_error())}.
function_call_from_json(Data) ->
    _pipe = Data,
    (gleam@dynamic:decode2(
        fun(Field@0, Field@1) -> {function_call, Field@0, Field@1} end,
        gleam@dynamic:field(<<"name"/utf8>>, fun gleam@dynamic:string/1),
        gleam@dynamic:field(<<"arguments"/utf8>>, fun gleam@dynamic:string/1)
    ))(_pipe).