-module(radish@command).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function]).

-export([hello/1, keys/1, exists/1, get/1, mget/1, append/2, set/3, mset/1, del/1, incr/1, incr_by/2, incr_by_float/2, decr/1, decr_by/2, random_key/0, key_type/1, rename/2, renamenx/2, persist/1, expire/3]).
-export_type([set_option/0, expire_condition/0]).

-type set_option() :: snx |
    sxx |
    get |
    keepttl |
    {ex, integer()} |
    {px, integer()} |
    {exat, integer()} |
    {pxat, integer()}.

-type expire_condition() :: nx | xx | gt | lt.

-spec hello(integer()) -> bitstring().
hello(Protocol) ->
    _pipe = [<<"HELLO"/utf8>>, gleam@int:to_string(Protocol)],
    radish@utils:prepare(_pipe).

-spec keys(binary()) -> bitstring().
keys(Pattern) ->
    _pipe = [<<"KEYS"/utf8>>, Pattern],
    radish@utils:prepare(_pipe).

-spec exists(list(binary())) -> bitstring().
exists(Keys) ->
    _pipe = [<<"EXISTS"/utf8>>],
    _pipe@1 = gleam@list:append(
        _pipe,
        gleam@list:map(Keys, fun(Key) -> Key end)
    ),
    radish@utils:prepare(_pipe@1).

-spec get(binary()) -> bitstring().
get(Key) ->
    _pipe = [<<"GET"/utf8>>, Key],
    radish@utils:prepare(_pipe).

-spec mget(list(binary())) -> bitstring().
mget(Keys) ->
    _pipe = [<<"MGET"/utf8>>],
    _pipe@1 = gleam@list:append(
        _pipe,
        gleam@list:map(Keys, fun(Key) -> Key end)
    ),
    radish@utils:prepare(_pipe@1).

-spec append(binary(), binary()) -> bitstring().
append(Key, Value) ->
    _pipe = [<<"APPEND"/utf8>>, Key, Value],
    radish@utils:prepare(_pipe).

-spec set(binary(), binary(), list(set_option())) -> bitstring().
set(Key, Value, Options) ->
    _pipe = gleam@list:fold(
        Options,
        [<<"SET"/utf8>>, Key, Value],
        fun(Cmd, Option) -> case Option of
                snx ->
                    gleam@list:append(Cmd, [<<"NX"/utf8>>]);

                sxx ->
                    gleam@list:append(Cmd, [<<"XX"/utf8>>]);

                get ->
                    gleam@list:append(Cmd, [<<"GET"/utf8>>]);

                keepttl ->
                    gleam@list:append(Cmd, [<<"KEEPTTL"/utf8>>]);

                {ex, Value@1} ->
                    gleam@list:append(
                        Cmd,
                        [<<"EX"/utf8>>, gleam@int:to_string(Value@1)]
                    );

                {px, Value@2} ->
                    gleam@list:append(
                        Cmd,
                        [<<"PX"/utf8>>, gleam@int:to_string(Value@2)]
                    );

                {exat, Value@3} ->
                    gleam@list:append(
                        Cmd,
                        [<<"EXAT"/utf8>>, gleam@int:to_string(Value@3)]
                    );

                {pxat, Value@4} ->
                    gleam@list:append(
                        Cmd,
                        [<<"PXAT"/utf8>>, gleam@int:to_string(Value@4)]
                    )
            end end
    ),
    radish@utils:prepare(_pipe).

-spec mset(list({binary(), binary()})) -> bitstring().
mset(Kv_list) ->
    _pipe = Kv_list,
    _pipe@1 = gleam@list:map(
        _pipe,
        fun(Kv) -> [erlang:element(1, Kv), erlang:element(2, Kv)] end
    ),
    _pipe@2 = gleam@list:flatten(_pipe@1),
    _pipe@3 = gleam@list:append([<<"MSET"/utf8>>], _pipe@2),
    radish@utils:prepare(_pipe@3).

-spec del(list(binary())) -> bitstring().
del(Keys) ->
    _pipe = [<<"DEL"/utf8>>],
    _pipe@1 = gleam@list:append(
        _pipe,
        gleam@list:map(Keys, fun(Key) -> Key end)
    ),
    radish@utils:prepare(_pipe@1).

-spec incr(binary()) -> bitstring().
incr(Key) ->
    _pipe = [<<"INCR"/utf8>>, Key],
    radish@utils:prepare(_pipe).

-spec incr_by(binary(), integer()) -> bitstring().
incr_by(Key, Value) ->
    _pipe = [<<"INCRBY"/utf8>>, Key, gleam@int:to_string(Value)],
    radish@utils:prepare(_pipe).

-spec incr_by_float(binary(), float()) -> bitstring().
incr_by_float(Key, Value) ->
    _pipe = [<<"INCRBYFLOAT"/utf8>>, Key, gleam@float:to_string(Value)],
    radish@utils:prepare(_pipe).

-spec decr(binary()) -> bitstring().
decr(Key) ->
    _pipe = [<<"DECR"/utf8>>, Key],
    radish@utils:prepare(_pipe).

-spec decr_by(binary(), integer()) -> bitstring().
decr_by(Key, Value) ->
    _pipe = [<<"DECRBY"/utf8>>, Key, gleam@int:to_string(Value)],
    radish@utils:prepare(_pipe).

-spec random_key() -> bitstring().
random_key() ->
    _pipe = [<<"RANDOMKEY"/utf8>>],
    radish@utils:prepare(_pipe).

-spec key_type(binary()) -> bitstring().
key_type(Key) ->
    _pipe = [<<"TYPE"/utf8>>, Key],
    radish@utils:prepare(_pipe).

-spec rename(binary(), binary()) -> bitstring().
rename(Key, New_key) ->
    _pipe = [<<"RENAME"/utf8>>, Key, New_key],
    radish@utils:prepare(_pipe).

-spec renamenx(binary(), binary()) -> bitstring().
renamenx(Key, New_key) ->
    _pipe = [<<"RENAMENX"/utf8>>, Key, New_key],
    radish@utils:prepare(_pipe).

-spec persist(binary()) -> bitstring().
persist(Key) ->
    _pipe = [<<"PERSIST"/utf8>>, Key],
    radish@utils:prepare(_pipe).

-spec expire(binary(), integer(), gleam@option:option(expire_condition())) -> bitstring().
expire(Key, Ttl, Expire_if) ->
    _pipe = case Expire_if of
        none ->
            [<<"EXPIRE"/utf8>>, Key, gleam@int:to_string(Ttl)];

        {some, nx} ->
            [<<"EXPIRE"/utf8>>, Key, gleam@int:to_string(Ttl), <<"NX"/utf8>>];

        {some, xx} ->
            [<<"EXPIRE"/utf8>>, Key, gleam@int:to_string(Ttl), <<"XX"/utf8>>];

        {some, gt} ->
            [<<"EXPIRE"/utf8>>, Key, gleam@int:to_string(Ttl), <<"GT"/utf8>>];

        {some, lt} ->
            [<<"EXPIRE"/utf8>>, Key, gleam@int:to_string(Ttl), <<"LT"/utf8>>]
    end,
    radish@utils:prepare(_pipe).