-module(content_type).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([to_string/1]).
-export_type([application_content_type/0, webm_audio_codec/0, audio_content_type/0, font_content_type/0, example_content_type/0, image_content_type/0, message_content_type/0, model_content_type/0, multipart_content_type/0, text_content_type/0, webm_video_codec/0, video_content_type/0, content_type/0]).

-type application_content_type() :: json_application_content_type |
    xml_application_content_type |
    ogg_application_content_type |
    {ogg_with_codecs_application_content_type, list(binary())} |
    {custom_application_content_type, binary()}.

-type webm_audio_codec() :: vorbis_webm_audio_codec | opuswebm_audio_codec.

-type audio_content_type() :: aac_audio_content_type |
    flac_audio_content_type |
    mpeg_audio_content_type |
    mp3_audio_content_type |
    webm_audio_content_type |
    {webm_with_codecs_audio_content_type, list(webm_audio_codec())} |
    {custom_audio_content_type, binary()}.

-type font_content_type() :: collection_font_content_type |
    otf_font_content_type |
    sfnt_font_content_type |
    ttf_font_content_type |
    woff_font_content_type |
    woff2_font_content_type |
    {custom_font_content_type, binary()}.

-type example_content_type() :: {custom_example_content_type, binary()}.

-type image_content_type() :: jpeg_image_content_type |
    png_image_content_type |
    {custom_image_content_type, binary()}.

-type message_content_type() :: http_message_content_type |
    sip_message_content_type |
    {custom_message_content_type, binary()}.

-type model_content_type() :: step_model_content_type |
    obj_model_content_type |
    {custom_model_content_type, binary()}.

-type multipart_content_type() :: form_data_multipart_content_type |
    mixed_multipart_content_type |
    {custom_multipart_content_type, binary()}.

-type text_content_type() :: plain_text_content_type |
    html_text_content_type |
    javascript_text_content_type |
    css_text_content_type |
    {custom_text_content_type, binary()}.

-type webm_video_codec() :: vp8webm_video_codec | vp80webm_video_codec.

-type video_content_type() :: raw_video_content_type |
    mp4_video_content_type |
    mpv_video_content_type |
    webm_video_content_type |
    {webm_with_codecs_video_content_type, list(webm_video_codec())} |
    {custom_video_content_type, binary()}.

-type content_type() :: {application_content_type, application_content_type()} |
    {application_with_codecs_content_type,
        application_content_type(),
        list(binary())} |
    {audio_content_type, audio_content_type()} |
    {audio_with_codecs_content_type, audio_content_type(), list(binary())} |
    {font_content_type, font_content_type()} |
    {example_content_type, example_content_type()} |
    {image_content_type, image_content_type()} |
    {message_content_type, message_content_type()} |
    {model_content_type, model_content_type()} |
    {multipart_content_type, multipart_content_type()} |
    {text_content_type, text_content_type()} |
    {video_content_type, video_content_type()} |
    {video_with_codecs_content_type, video_content_type(), list(binary())} |
    {custom_content_type, binary(), binary()} |
    {custom_raw_content_type, binary()}.

-spec codecs_to_string(list(binary())) -> binary().
codecs_to_string(Codecs) ->
    <<<<"; codecs=\""/utf8, (gleam@string:join(Codecs, <<", "/utf8>>))/binary>>/binary,
        "\""/utf8>>.

-spec application_to_string(application_content_type()) -> binary().
application_to_string(Ct) ->
    case Ct of
        json_application_content_type ->
            <<"json"/utf8>>;

        xml_application_content_type ->
            <<"xml"/utf8>>;

        ogg_application_content_type ->
            <<"ogg"/utf8>>;

        {ogg_with_codecs_application_content_type, C} ->
            <<"ogg"/utf8, (codecs_to_string(C))/binary>>;

        {custom_application_content_type, S} ->
            S
    end.

-spec webm_audio_codec_to_string(webm_audio_codec()) -> binary().
webm_audio_codec_to_string(C) ->
    case C of
        vorbis_webm_audio_codec ->
            <<"vorbis"/utf8>>;

        opuswebm_audio_codec ->
            <<"opus"/utf8>>
    end.

-spec audio_to_string(audio_content_type()) -> binary().
audio_to_string(Ct) ->
    case Ct of
        aac_audio_content_type ->
            <<"aac"/utf8>>;

        flac_audio_content_type ->
            <<"flac"/utf8>>;

        mpeg_audio_content_type ->
            <<"mpeg"/utf8>>;

        mp3_audio_content_type ->
            <<"mp3"/utf8>>;

        webm_audio_content_type ->
            <<"webm"/utf8>>;

        {webm_with_codecs_audio_content_type, C} ->
            <<"webm"/utf8,
                (codecs_to_string(
                    gleam@list:map(C, fun webm_audio_codec_to_string/1)
                ))/binary>>;

        {custom_audio_content_type, S} ->
            S
    end.

-spec font_to_string(font_content_type()) -> binary().
font_to_string(Ct) ->
    case Ct of
        collection_font_content_type ->
            <<"collection"/utf8>>;

        otf_font_content_type ->
            <<"otf"/utf8>>;

        sfnt_font_content_type ->
            <<"sfnt"/utf8>>;

        ttf_font_content_type ->
            <<"ttf"/utf8>>;

        woff_font_content_type ->
            <<"woff"/utf8>>;

        woff2_font_content_type ->
            <<"woff2"/utf8>>;

        {custom_font_content_type, S} ->
            S
    end.

-spec example_to_string(example_content_type()) -> binary().
example_to_string(Ct) ->
    case Ct of
        {custom_example_content_type, S} ->
            S
    end.

-spec image_to_string(image_content_type()) -> binary().
image_to_string(Ct) ->
    case Ct of
        jpeg_image_content_type ->
            <<"jpeg"/utf8>>;

        png_image_content_type ->
            <<"png"/utf8>>;

        {custom_image_content_type, S} ->
            S
    end.

-spec message_to_string(message_content_type()) -> binary().
message_to_string(Ct) ->
    case Ct of
        http_message_content_type ->
            <<"http"/utf8>>;

        sip_message_content_type ->
            <<"sip"/utf8>>;

        {custom_message_content_type, S} ->
            S
    end.

-spec model_to_string(model_content_type()) -> binary().
model_to_string(Ct) ->
    case Ct of
        step_model_content_type ->
            <<"step"/utf8>>;

        obj_model_content_type ->
            <<"obj"/utf8>>;

        {custom_model_content_type, S} ->
            S
    end.

-spec multipart_to_string(multipart_content_type()) -> binary().
multipart_to_string(Ct) ->
    case Ct of
        form_data_multipart_content_type ->
            <<"form-data"/utf8>>;

        mixed_multipart_content_type ->
            <<"mixed"/utf8>>;

        {custom_multipart_content_type, S} ->
            S
    end.

-spec text_to_string(text_content_type()) -> binary().
text_to_string(Ct) ->
    case Ct of
        plain_text_content_type ->
            <<"plain"/utf8>>;

        html_text_content_type ->
            <<"html"/utf8>>;

        javascript_text_content_type ->
            <<"javascript"/utf8>>;

        css_text_content_type ->
            <<"css"/utf8>>;

        {custom_text_content_type, S} ->
            S
    end.

-spec webm_video_codec_to_string(webm_video_codec()) -> binary().
webm_video_codec_to_string(C) ->
    case C of
        vp8webm_video_codec ->
            <<"vp8"/utf8>>;

        vp80webm_video_codec ->
            <<"vp8.0"/utf8>>
    end.

-spec video_to_string(video_content_type()) -> binary().
video_to_string(Ct) ->
    case Ct of
        raw_video_content_type ->
            <<"raw"/utf8>>;

        mp4_video_content_type ->
            <<"mp4"/utf8>>;

        mpv_video_content_type ->
            <<"MPV"/utf8>>;

        webm_video_content_type ->
            <<"webm"/utf8>>;

        {webm_with_codecs_video_content_type, C} ->
            <<"webm"/utf8,
                (codecs_to_string(
                    gleam@list:map(C, fun webm_video_codec_to_string/1)
                ))/binary>>;

        {custom_video_content_type, S} ->
            S
    end.

-spec mime(binary(), binary()) -> binary().
mime(Media_type, Sub_type) ->
    <<<<Media_type/binary, "/"/utf8>>/binary, Sub_type/binary>>.

-spec to_string(content_type()) -> binary().
to_string(Content_type) ->
    case Content_type of
        {application_content_type, Ct} ->
            mime(<<"application"/utf8>>, application_to_string(Ct));

        {application_with_codecs_content_type, Ct@1, Cd} ->
            <<(mime(<<"application"/utf8>>, application_to_string(Ct@1)))/binary,
                (codecs_to_string(Cd))/binary>>;

        {audio_content_type, Ct@2} ->
            mime(<<"audio"/utf8>>, audio_to_string(Ct@2));

        {audio_with_codecs_content_type, Ct@3, Cd@1} ->
            <<(mime(<<"audio"/utf8>>, audio_to_string(Ct@3)))/binary,
                (codecs_to_string(Cd@1))/binary>>;

        {font_content_type, Ct@4} ->
            mime(<<"font"/utf8>>, font_to_string(Ct@4));

        {example_content_type, Ct@5} ->
            mime(<<"example"/utf8>>, example_to_string(Ct@5));

        {image_content_type, Ct@6} ->
            mime(<<"image"/utf8>>, image_to_string(Ct@6));

        {message_content_type, Ct@7} ->
            mime(<<"message"/utf8>>, message_to_string(Ct@7));

        {model_content_type, Ct@8} ->
            mime(<<"model"/utf8>>, model_to_string(Ct@8));

        {multipart_content_type, Ct@9} ->
            mime(<<"multipart"/utf8>>, multipart_to_string(Ct@9));

        {text_content_type, Ct@10} ->
            mime(<<"text"/utf8>>, text_to_string(Ct@10));

        {video_content_type, Ct@11} ->
            mime(<<"video"/utf8>>, video_to_string(Ct@11));

        {video_with_codecs_content_type, Ct@12, Cd@2} ->
            <<(mime(<<"video"/utf8>>, video_to_string(Ct@12)))/binary,
                (codecs_to_string(Cd@2))/binary>>;

        {custom_content_type, Mt, St} ->
            mime(Mt, St);

        {custom_raw_content_type, S} ->
            S
    end.