-module(yamleam@decoder).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/yamleam/decoder.gleam").
-export([to_dynamic/1]).

-if(?OTP_RELEASE >= 27).
-define(MODULEDOC(Str), -moduledoc(Str)).
-define(DOC(Str), -doc(Str)).
-else.
-define(MODULEDOC(Str), -compile([])).
-define(DOC(Str), -compile([])).
-endif.

?MODULEDOC(
    " Bridge from `YamlNode` to `gleam/dynamic` so that the stdlib\n"
    " `gleam/dynamic/decode` decoders work over a parsed YAML tree.\n"
    "\n"
    " The conversion is straightforward because the Erlang term shapes\n"
    " produced by `dynamic.from` for Gleam primitives match what the\n"
    " stdlib decoders expect:\n"
    "\n"
    " | YAML | Gleam | Erlang |\n"
    " |---|---|---|\n"
    " | YamlNull | Nil | nil atom |\n"
    " | YamlBool | Bool | true / false atom |\n"
    " | YamlInt | Int | integer |\n"
    " | YamlFloat | Float | float |\n"
    " | YamlString | String | binary |\n"
    " | YamlList | List(Dynamic) | list |\n"
    " | YamlMap | Dict(String, Dynamic) | map |\n"
).

-file("src/yamleam/decoder.gleam", 25).
-spec to_dynamic(yamleam@node:yaml_node()) -> gleam@dynamic:dynamic_().
to_dynamic(N) ->
    case N of
        yaml_null ->
            gleam@dynamic:nil();

        {yaml_bool, B} ->
            gleam_stdlib:identity(B);

        {yaml_int, I} ->
            gleam_stdlib:identity(I);

        {yaml_float, F} ->
            gleam_stdlib:identity(F);

        {yaml_string, S} ->
            gleam_stdlib:identity(S);

        {yaml_list, Items} ->
            _pipe = Items,
            _pipe@1 = gleam@list:map(_pipe, fun to_dynamic/1),
            gleam_stdlib:identity(_pipe@1);

        {yaml_map, Pairs} ->
            _pipe@2 = Pairs,
            _pipe@3 = gleam@list:map(
                _pipe@2,
                fun(Pair) ->
                    {Key, Value} = Pair,
                    {gleam_stdlib:identity(Key), to_dynamic(Value)}
                end
            ),
            gleam@dynamic:properties(_pipe@3)
    end.