-module(gledis).
-compile(no_auto_import).

-export([null/0, bool/1, int/1, float/1, string/1, bytea/1, dynamic/1, connect/0, close/1, 'query'/2]).
-export_type([argument/0, 'query'/0, client/0]).

-type argument() :: any().

-type 'query'() :: {keys, binary()} |
    {get, binary()} |
    {set, binary(), argument()} |
    {del, binary()} |
    {exists, binary()} |
    random_key |
    {custom, binary(), list(argument())}.

-type client() :: any().

-spec null() -> argument().
null() ->
    gledis_ffi:null().

-spec bool(boolean()) -> argument().
bool(Field@0) ->
    gledis_ffi:coerce(Field@0).

-spec int(integer()) -> argument().
int(Field@0) ->
    gledis_ffi:coerce(Field@0).

-spec float(float()) -> argument().
float(Field@0) ->
    gledis_ffi:coerce(Field@0).

-spec string(binary()) -> argument().
string(Field@0) ->
    gledis_ffi:coerce(Field@0).

-spec bytea(bitstring()) -> argument().
bytea(Field@0) ->
    gledis_ffi:coerce(Field@0).

-spec dynamic(gleam@dynamic:dynamic()) -> argument().
dynamic(Field@0) ->
    gledis_ffi:coerce(Field@0).

-spec build_query('query'()) -> list(gleam@dynamic:dynamic()).
build_query(Query) ->
    case Query of
        {get, Key} ->
            [gleam@dynamic:from(<<"GET"/utf8>>), gleam@dynamic:from(Key)];

        {set, Key@1, Value} ->
            [gleam@dynamic:from(<<"SET"/utf8>>),
                gleam@dynamic:from(Key@1),
                gleam@dynamic:from(Value)];

        {del, Key@2} ->
            [gleam@dynamic:from(<<"DEL"/utf8>>), gleam@dynamic:from(Key@2)];

        {exists, Key@3} ->
            [gleam@dynamic:from(<<"EXISTS"/utf8>>), gleam@dynamic:from(Key@3)];

        {keys, Pattern} ->
            [gleam@dynamic:from(<<"KEYS"/utf8>>), gleam@dynamic:from(Pattern)];

        random_key ->
            [gleam@dynamic:from(<<"RANDOMKEY"/utf8>>)];

        {custom, Command, Args} ->
            [gleam@dynamic:from(Command) |
                gleam@list:map(Args, fun gleam@dynamic:from/1)]
    end.

-spec connect() -> client().
connect() ->
    gledis_ffi:connect().

-spec close(client()) -> nil.
close(Field@0) ->
    gledis_ffi:close(Field@0).

-spec 'query'(client(), 'query'()) -> {ok, any()} | {error, binary()}.
'query'(Client, Query) ->
    gledis_ffi:'query'(Client, build_query(Query)).