-module(commonmark@internal@html).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([sanitize_href_property/1, sanitize_plain_text/1, inline_to_html/1, block_to_html/1]).

-spec sanitize_href_property(binary()) -> binary().
sanitize_href_property(Prop) ->
    _pipe = Prop,
    _pipe@1 = gleam@string:replace(_pipe, <<"&"/utf8>>, <<"&amp;"/utf8>>),
    gleam@string:replace(_pipe@1, <<"\""/utf8>>, <<"%22"/utf8>>).

-spec sanitize_plain_text(binary()) -> binary().
sanitize_plain_text(Text) ->
    _pipe = Text,
    _pipe@1 = gleam@string:replace(_pipe, <<"&"/utf8>>, <<"&amp;"/utf8>>),
    _pipe@2 = gleam@string:replace(_pipe@1, <<"<"/utf8>>, <<"&lt;"/utf8>>),
    gleam@string:replace(_pipe@2, <<">"/utf8>>, <<"&gt;"/utf8>>).

-spec inline_to_html(commonmark@ast:inline_node()) -> binary().
inline_to_html(Inline) ->
    case Inline of
        {text, Contents} ->
            _pipe = Contents,
            sanitize_plain_text(_pipe);

        hard_line_break ->
            <<"<br />\n"/utf8>>;

        soft_line_break ->
            <<"\n"/utf8>>;

        {uri_autolink, Href} ->
            <<<<<<<<"<a href=\""/utf8, (sanitize_href_property(Href))/binary>>/binary,
                        "\">"/utf8>>/binary,
                    Href/binary>>/binary,
                "</a>"/utf8>>;

        {email_autolink, Email} ->
            <<<<<<<<"<a href=\"mailto:"/utf8,
                            (sanitize_href_property(Email))/binary>>/binary,
                        "\">"/utf8>>/binary,
                    Email/binary>>/binary,
                "</a>"/utf8>>;

        {code_span, Contents@1} ->
            <<<<"<code>"/utf8,
                    (begin
                        _pipe@1 = Contents@1,
                        sanitize_plain_text(_pipe@1)
                    end)/binary>>/binary,
                "</code>"/utf8>>;

        {emphasis, Contents@2, _} ->
            <<<<"<em>"/utf8,
                    (begin
                        _pipe@2 = Contents@2,
                        _pipe@3 = gleam@list:map(_pipe@2, fun inline_to_html/1),
                        gleam@string:join(_pipe@3, <<""/utf8>>)
                    end)/binary>>/binary,
                "</em>"/utf8>>;

        {strong_emphasis, Contents@3, _} ->
            <<<<"<strong>"/utf8,
                    (begin
                        _pipe@4 = Contents@3,
                        _pipe@5 = gleam@list:map(_pipe@4, fun inline_to_html/1),
                        gleam@string:join(_pipe@5, <<""/utf8>>)
                    end)/binary>>/binary,
                "</strong>"/utf8>>;

        {strike_through, Contents@4} ->
            <<<<"<s>"/utf8,
                    (begin
                        _pipe@6 = Contents@4,
                        _pipe@7 = gleam@list:map(_pipe@6, fun inline_to_html/1),
                        gleam@string:join(_pipe@7, <<""/utf8>>)
                    end)/binary>>/binary,
                "</s>"/utf8>>;

        {html_inline, Html} ->
            Html;

        {image, _, _} ->
            <<"Image"/utf8>>;

        {reference_link, _, _} ->
            <<"Link"/utf8>>;

        {link, _, _, _} ->
            <<"Link"/utf8>>;

        {named_entity, <<"amp"/utf8>>, _} ->
            <<"&amp;"/utf8>>;

        {named_entity, _, Cp} ->
            gleam_stdlib:utf_codepoint_list_to_string(Cp);

        {numeric_character_reference, Cp@1, _} ->
            gleam_stdlib:utf_codepoint_list_to_string([Cp@1])
    end.

-spec block_to_html(commonmark@ast:block_node()) -> binary().
block_to_html(Block) ->
    case Block of
        {code_block, none, _, Contents} ->
            <<<<"<pre><code>"/utf8,
                    (begin
                        _pipe = Contents,
                        sanitize_plain_text(_pipe)
                    end)/binary>>/binary,
                "</code></pre>\n"/utf8>>;

        {code_block, {some, Info}, _, Contents@1} ->
            <<<<<<<<"<pre><code class=\"language-"/utf8, Info/binary>>/binary,
                        "\">"/utf8>>/binary,
                    (begin
                        _pipe@1 = Contents@1,
                        sanitize_plain_text(_pipe@1)
                    end)/binary>>/binary,
                "</code></pre>\n"/utf8>>;

        {heading, Level, Contents@2} ->
            <<<<<<<<<<<<"<h"/utf8, (gleam@int:to_string(Level))/binary>>/binary,
                                ">"/utf8>>/binary,
                            (begin
                                _pipe@2 = Contents@2,
                                _pipe@3 = gleam@list:map(
                                    _pipe@2,
                                    fun inline_to_html/1
                                ),
                                gleam@string:join(_pipe@3, <<""/utf8>>)
                            end)/binary>>/binary,
                        "</h"/utf8>>/binary,
                    (gleam@int:to_string(Level))/binary>>/binary,
                ">\n"/utf8>>;

        horizontal_break ->
            <<"<hr />\n"/utf8>>;

        {paragraph, Contents@3} ->
            <<<<"<p>"/utf8,
                    (begin
                        _pipe@4 = Contents@3,
                        _pipe@5 = gleam@list:map(_pipe@4, fun inline_to_html/1),
                        gleam@string:join(_pipe@5, <<""/utf8>>)
                    end)/binary>>/binary,
                "</p>\n"/utf8>>;

        {html_block, Html} ->
            <<Html/binary, "\n"/utf8>>;

        {block_quote, Contents@4} ->
            <<<<"<blockquote>"/utf8,
                    (begin
                        _pipe@6 = Contents@4,
                        _pipe@7 = gleam@list:map(_pipe@6, fun block_to_html/1),
                        gleam@string:join(_pipe@7, <<""/utf8>>)
                    end)/binary>>/binary,
                "</blockquote>\n"/utf8>>;

        {ordered_list, Items, 1, _} ->
            <<<<"<ol>"/utf8,
                    (begin
                        _pipe@8 = Items,
                        _pipe@11 = gleam@list:map(
                            _pipe@8,
                            fun(Item) ->
                                <<<<"<li>"/utf8,
                                        (begin
                                            _pipe@9 = erlang:element(2, Item),
                                            _pipe@10 = gleam@list:map(
                                                _pipe@9,
                                                fun block_to_html/1
                                            ),
                                            gleam@string:join(
                                                _pipe@10,
                                                <<""/utf8>>
                                            )
                                        end)/binary>>/binary,
                                    "</li>"/utf8>>
                            end
                        ),
                        gleam@string:join(_pipe@11, <<""/utf8>>)
                    end)/binary>>/binary,
                "</ol>/n"/utf8>>;

        {ordered_list, Items@1, Start, _} ->
            <<<<<<<<"<ol start=\""/utf8, (gleam@int:to_string(Start))/binary>>/binary,
                        "\">"/utf8>>/binary,
                    (begin
                        _pipe@12 = Items@1,
                        _pipe@15 = gleam@list:map(
                            _pipe@12,
                            fun(Item@1) ->
                                <<<<"<li>"/utf8,
                                        (begin
                                            _pipe@13 = erlang:element(2, Item@1),
                                            _pipe@14 = gleam@list:map(
                                                _pipe@13,
                                                fun block_to_html/1
                                            ),
                                            gleam@string:join(
                                                _pipe@14,
                                                <<""/utf8>>
                                            )
                                        end)/binary>>/binary,
                                    "</li>"/utf8>>
                            end
                        ),
                        gleam@string:join(_pipe@15, <<""/utf8>>)
                    end)/binary>>/binary,
                "</ol>/n"/utf8>>;

        {unordered_list, Items@2, _} ->
            <<<<"<ul>"/utf8,
                    (begin
                        _pipe@16 = Items@2,
                        _pipe@19 = gleam@list:map(
                            _pipe@16,
                            fun(Item@2) ->
                                <<<<"<li>"/utf8,
                                        (begin
                                            _pipe@17 = erlang:element(2, Item@2),
                                            _pipe@18 = gleam@list:map(
                                                _pipe@17,
                                                fun block_to_html/1
                                            ),
                                            gleam@string:join(
                                                _pipe@18,
                                                <<""/utf8>>
                                            )
                                        end)/binary>>/binary,
                                    "</li>"/utf8>>
                            end
                        ),
                        gleam@string:join(_pipe@19, <<""/utf8>>)
                    end)/binary>>/binary,
                "</ul>/n"/utf8>>
    end.