-module(postgleam@codec@inet).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/postgleam/codec/inet.gleam").
-export([encode/1, decode/1, matcher/0]).

-file("src/postgleam/codec/inet.gleam", 27).
-spec encode(postgleam@value:value()) -> {ok, bitstring()} | {error, binary()}.
encode(Val) ->
    case Val of
        {inet, Family, Address, Netmask} ->
            Addr_len = erlang:byte_size(Address),
            Is_cidr = case Family of
                2 ->
                    case Netmask =:= 32 of
                        true ->
                            0;

                        false ->
                            1
                    end;

                3 ->
                    case Netmask =:= 128 of
                        true ->
                            0;

                        false ->
                            1
                    end;

                _ ->
                    0
            end,
            {ok, <<Family, Netmask, Is_cidr, Addr_len, Address/bitstring>>};

        _ ->
            {error, <<"inet codec: expected Inet value"/utf8>>}
    end.

-file("src/postgleam/codec/inet.gleam", 50).
-spec decode(bitstring()) -> {ok, postgleam@value:value()} | {error, binary()}.
decode(Data) ->
    case Data of
        <<Family, Netmask, _, Addr_len, Address/bitstring>> ->
            case erlang:byte_size(Address) >= Addr_len of
                true ->
                    Addr@1 = case gleam_stdlib:bit_array_slice(
                        Address,
                        0,
                        Addr_len
                    ) of
                        {ok, Addr} -> Addr;
                        _assert_fail ->
                            erlang:error(#{gleam_error => let_assert,
                                        message => <<"Pattern match failed, no pattern matched the value."/utf8>>,
                                        file => <<?FILEPATH/utf8>>,
                                        module => <<"postgleam/codec/inet"/utf8>>,
                                        function => <<"decode"/utf8>>,
                                        line => 55,
                                        value => _assert_fail,
                                        start => 1412,
                                        'end' => 1471,
                                        pattern_start => 1423,
                                        pattern_end => 1431})
                    end,
                    {ok, {inet, Family, Addr@1, Netmask}};

                false ->
                    {error, <<"inet codec: address too short"/utf8>>}
            end;

        _ ->
            {error, <<"inet codec: invalid data"/utf8>>}
    end.

-file("src/postgleam/codec/inet.gleam", 23).
-spec build(integer()) -> postgleam@codec:codec().
build(Type_oid) ->
    {codec, <<"inet"/utf8>>, Type_oid, binary, fun encode/1, fun decode/1}.

-file("src/postgleam/codec/inet.gleam", 13).
-spec matcher() -> postgleam@codec:codec_matcher().
matcher() ->
    {codec_matcher, <<"inet"/utf8>>, [869, 650], none, binary, fun build/1}.