-module(atproto_codegen@plugins@types).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/atproto_codegen/plugins/types.gleam").
-export([plugin/0]).

-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(
    " The `types` plugin: for each codec unit (a def or a synthesized union\n"
    " field type), emits the Gleam type, the JSON-fields helper, and the\n"
    " `$type`-tagging encoder. Decoding is the `decode-json` plugin's job; the\n"
    " host interleaves the two so the assembled file matches the original\n"
    " monolithic emitter's ordering.\n"
).

-file("src/atproto_codegen/plugins/types.gleam", 39).
-spec render_unit(
    atproto_codegen@config:config(),
    binary(),
    atproto_codegen@lower:codec_unit()
) -> binary().
render_unit(Cfg, Nsid, Unit) ->
    case Unit of
        {def_unit, Def} ->
            Name = atproto_codegen@naming:def_type_name(
                erlang:element(5, Cfg),
                Def
            ),
            Props = atproto_codegen@lower:properties_of(Def),
            Is_record = atproto_codegen@lower:is_record(Def),
            _pipe = [case Is_record of
                    true ->
                        [<<<<"pub const collection = \""/utf8,
                                    (atproto_codegen@emit@exprs:escape(Nsid))/binary>>/binary,
                                "\""/utf8>>];

                    false ->
                        []
                end, [atproto_codegen@emit@def:emit_type(
                        Cfg,
                        Nsid,
                        Def,
                        Name,
                        Props
                    )], [atproto_codegen@emit@def:emit_fields(
                        Cfg,
                        Nsid,
                        Def,
                        Name,
                        Props
                    )], [atproto_codegen@emit@def:emit_encoder(
                        Nsid,
                        Name,
                        Is_record
                    )]],
            _pipe@1 = lists:append(_pipe),
            gleam@string:join(_pipe@1, <<"\n\n"/utf8>>);

        {union_unit, Def@1, Field, Refs} ->
            Name@1 = atproto_codegen@emit@exprs:union_type_name(
                Cfg,
                Def@1,
                Field
            ),
            Parts = atproto_codegen@emit@union:emit_union(
                Cfg,
                Nsid,
                Name@1,
                Refs
            ),
            <<<<(erlang:element(2, Parts))/binary, "\n\n"/utf8>>/binary,
                (erlang:element(3, Parts))/binary>>
    end.

-file("src/atproto_codegen/plugins/types.gleam", 24).
-spec emit(atproto_codegen@plugin:plugin_context()) -> {ok,
        list(atproto_codegen@plugin:output_file())} |
    {error, atproto_codegen@plugin:codegen_error()}.
emit(Ctx) ->
    _pipe = erlang:element(4, Ctx),
    _pipe@1 = gleam@list:filter_map(
        _pipe,
        fun(Lex) ->
            case atproto_codegen@lower:codec_units(erlang:element(4, Lex)) of
                [] ->
                    {error, nil};

                Units ->
                    {ok,
                        {output_file,
                            <<(atproto_codegen@naming:module_subpath(
                                    erlang:element(5, erlang:element(2, Ctx)),
                                    erlang:element(2, Lex)
                                ))/binary,
                                ".gleam"/utf8>>,
                            gleam@list:map(
                                Units,
                                fun(_capture) ->
                                    render_unit(
                                        erlang:element(2, Ctx),
                                        erlang:element(2, Lex),
                                        _capture
                                    )
                                end
                            )}}
            end
        end
    ),
    {ok, _pipe@1}.

-file("src/atproto_codegen/plugins/types.gleam", 20).
-spec plugin() -> atproto_codegen@plugin:plugin().
plugin() ->
    {plugin, <<"types"/utf8>>, [], fun emit/1}.