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

-export([sanitize_href_property/1, sanitize_plain_text/1, block_to_html_safe/3, block_to_html/3]).

-spec sanitize_href_property(binary()) -> binary().
sanitize_href_property(Prop) ->
    _pipe = Prop,
    _pipe@1 = gleam@string:replace(_pipe, <<"&"/utf8>>, <<"&amp;"/utf8>>),
    _pipe@2 = gleam@string:replace(_pipe@1, <<"\""/utf8>>, <<"%22"/utf8>>),
    _pipe@3 = gleam@string:replace(_pipe@2, <<"\\"/utf8>>, <<"%5C"/utf8>>),
    gleam@string:replace(_pipe@3, <<" "/utf8>>, <<"%20"/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>>, <<"&quot;"/utf8>>),
    _pipe@3 = gleam@string:replace(_pipe@2, <<"<"/utf8>>, <<"&lt;"/utf8>>),
    gleam@string:replace(_pipe@3, <<">"/utf8>>, <<"&gt;"/utf8>>).

-spec loose_list_item(list(binary())) -> binary().
loose_list_item(Content) ->
    <<<<"<li>\n"/utf8, (gleam@string:join(Content, <<""/utf8>>))/binary>>/binary,
        "</li>\n"/utf8>>.

-spec tight_list_item(
    list(commonmark@ast:block_node()),
    gleam@dict:dict(binary(), commonmark@ast:reference_()),
    fun((commonmark@ast:block_node(), gleam@dict:dict(binary(), commonmark@ast:reference_()), boolean()) -> AHOH),
    fun((list(AHOH)) -> AHOJ),
    fun((AHOJ, fun((list(binary())) -> AHOH)) -> AHOH),
    fun((AHOH, fun((binary()) -> binary())) -> AHOH),
    fun(({AHOH, AHOH}, fun(({binary(), binary()}) -> binary())) -> AHOH),
    fun((binary()) -> AHOH)
) -> AHOH.
tight_list_item(Contents, Refs, F, All, Try, Map, Map_pair, Unit) ->
    Count = erlang:length(Contents),
    R = begin
        _pipe = Contents,
        lists:reverse(_pipe)
    end,
    Try(
        begin
            _pipe@1 = R,
            _pipe@2 = gleam@list:drop(_pipe@1, 1),
            _pipe@3 = lists:reverse(_pipe@2),
            _pipe@4 = gleam@list:drop(_pipe@3, 1),
            _pipe@5 = gleam@list:map(_pipe@4, fun(B) -> case B of
                        {paragraph, C} ->
                            F(
                                {paragraph,
                                    gleam@list:concat([C, [soft_line_break]])},
                                Refs,
                                true
                            );

                        _ ->
                            F(B, Refs, true)
                    end end),
            All(_pipe@5)
        end,
        fun(Rest) ->
            Map_pair(
                case {Count, gleam@list:first(Contents), gleam@list:first(R)} of
                    {0, _, _} ->
                        {Unit(<<""/utf8>>), Unit(<<""/utf8>>)};

                    {_, {error, _}, _} ->
                        {Unit(<<""/utf8>>), Unit(<<""/utf8>>)};

                    {_, _, {error, _}} ->
                        {Unit(<<""/utf8>>), Unit(<<""/utf8>>)};

                    {1, {ok, {paragraph, _} = P}, _} ->
                        {F(P, Refs, true), Unit(<<""/utf8>>)};

                    {1, {ok, Block}, _} ->
                        {begin
                                _pipe@6 = F(Block, Refs, true),
                                Map(
                                    _pipe@6,
                                    fun(X) -> <<"\n"/utf8, X/binary>> end
                                )
                            end,
                            Unit(<<""/utf8>>)};

                    {_, {ok, {paragraph, _} = P@1}, {ok, Last}} ->
                        {begin
                                _pipe@7 = F(P@1, Refs, true),
                                Map(
                                    _pipe@7,
                                    fun(X@1) -> <<X@1/binary, "\n"/utf8>> end
                                )
                            end,
                            F(Last, Refs, true)};

                    {_, {ok, First}, {ok, Last@1}} ->
                        {begin
                                _pipe@8 = F(First, Refs, true),
                                Map(
                                    _pipe@8,
                                    fun(X@2) -> <<"\n"/utf8, X@2/binary>> end
                                )
                            end,
                            F(Last@1, Refs, true)}
                end,
                fun(_use0) ->
                    {First@1, Last@2} = _use0,
                    <<<<<<<<"<li>"/utf8, First@1/binary>>/binary,
                                (gleam@string:join(Rest, <<""/utf8>>))/binary>>/binary,
                            Last@2/binary>>/binary,
                        "</li>\n"/utf8>>
                end
            )
        end
    ).

-spec blockquote(list(binary())) -> binary().
blockquote(Contents) ->
    <<<<"<blockquote>\n"/utf8,
            (gleam@string:join(Contents, <<""/utf8>>))/binary>>/binary,
        "</blockquote>\n"/utf8>>.

-spec code(binary(), gleam@option:option(binary())) -> binary().
code(Contents, Language) ->
    Class = begin
        _pipe = Language,
        _pipe@1 = gleam@option:map(
            _pipe,
            fun(S) ->
                <<<<" class=\"language-"/utf8, S/binary>>/binary, "\""/utf8>>
            end
        ),
        gleam@option:unwrap(_pipe@1, <<""/utf8>>)
    end,
    <<<<<<<<"<pre><code"/utf8, Class/binary>>/binary, ">"/utf8>>/binary,
            Contents/binary>>/binary,
        "</code></pre>\n"/utf8>>.

-spec header(list(binary()), integer()) -> binary().
header(Contents, Level) ->
    Tag = <<"h"/utf8, (gleam@int:to_string(Level))/binary>>,
    <<<<<<<<<<<<"<"/utf8, Tag/binary>>/binary, ">"/utf8>>/binary,
                    (gleam@string:join(Contents, <<""/utf8>>))/binary>>/binary,
                "</"/utf8>>/binary,
            Tag/binary>>/binary,
        ">\n"/utf8>>.

-spec ol(list(binary()), gleam@option:option(integer())) -> binary().
ol(Content, Start) ->
    Start_attr = begin
        _pipe = Start,
        _pipe@1 = gleam@option:map(
            _pipe,
            fun(S) ->
                <<<<" start=\""/utf8, (gleam@int:to_string(S))/binary>>/binary,
                    "\""/utf8>>
            end
        ),
        gleam@option:unwrap(_pipe@1, <<""/utf8>>)
    end,
    <<<<<<<<"<ol"/utf8, Start_attr/binary>>/binary, ">\n"/utf8>>/binary,
            (gleam@string:join(Content, <<""/utf8>>))/binary>>/binary,
        "</ol>\n"/utf8>>.

-spec p(list(binary())) -> binary().
p(Content) ->
    <<<<"<p>"/utf8, (gleam@string:join(Content, <<""/utf8>>))/binary>>/binary,
        "</p>\n"/utf8>>.

-spec ul(list(binary())) -> binary().
ul(Content) ->
    <<<<"<ul>\n"/utf8, (gleam@string:join(Content, <<""/utf8>>))/binary>>/binary,
        "</ul>\n"/utf8>>.

-spec block_to_html_safe(
    commonmark@ast:block_node(),
    gleam@dict:dict(binary(), commonmark@ast:reference_()),
    boolean()
) -> binary().
block_to_html_safe(Block, Refs, Tight) ->
    case Block of
        {alert_block, _, Contents} ->
            blockquote(
                begin
                    _pipe = Contents,
                    gleam@list:map(
                        _pipe,
                        fun(_capture) ->
                            block_to_html_safe(_capture, Refs, false)
                        end
                    )
                end
            );

        {block_quote, Contents} ->
            blockquote(
                begin
                    _pipe = Contents,
                    gleam@list:map(
                        _pipe,
                        fun(_capture) ->
                            block_to_html_safe(_capture, Refs, false)
                        end
                    )
                end
            );

        {code_block, Language, _, Contents@1} ->
            code(
                begin
                    _pipe@1 = Contents@1,
                    sanitize_plain_text(_pipe@1)
                end,
                Language
            );

        {heading, Level, Contents@2} ->
            header(
                begin
                    _pipe@2 = Contents@2,
                    gleam@list:map(
                        _pipe@2,
                        fun(_capture@1) ->
                            inline_to_html_safe(_capture@1, Refs)
                        end
                    )
                end,
                Level
            );

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

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

        {ordered_list, Items, 1, _} ->
            ol(
                begin
                    _pipe@3 = Items,
                    gleam@list:map(
                        _pipe@3,
                        fun(_capture@2) ->
                            list_item_to_html_safe(_capture@2, Refs)
                        end
                    )
                end,
                none
            );

        {ordered_list, Items@1, Start, _} ->
            ol(
                begin
                    _pipe@4 = Items@1,
                    gleam@list:map(
                        _pipe@4,
                        fun(_capture@3) ->
                            list_item_to_html_safe(_capture@3, Refs)
                        end
                    )
                end,
                {some, Start}
            );

        {paragraph, Contents@3} when Tight ->
            _pipe@5 = Contents@3,
            _pipe@6 = gleam@list:map(
                _pipe@5,
                fun(_capture@4) -> inline_to_html_safe(_capture@4, Refs) end
            ),
            gleam@string:join(_pipe@6, <<""/utf8>>);

        {paragraph, Contents@4} ->
            p(
                begin
                    _pipe@7 = Contents@4,
                    gleam@list:map(
                        _pipe@7,
                        fun(_capture@5) ->
                            inline_to_html_safe(_capture@5, Refs)
                        end
                    )
                end
            );

        {unordered_list, Items@2, _} ->
            ul(
                begin
                    _pipe@8 = Items@2,
                    gleam@list:map(
                        _pipe@8,
                        fun(_capture@6) ->
                            list_item_to_html_safe(_capture@6, Refs)
                        end
                    )
                end
            )
    end.

-spec list_item_to_html_safe(
    commonmark@ast:list_item(),
    gleam@dict:dict(binary(), commonmark@ast:reference_())
) -> binary().
list_item_to_html_safe(Item, Refs) ->
    case Item of
        {list_item, []} ->
            <<"<li></li>\n"/utf8>>;

        {tight_list_item, []} ->
            <<"<li></li>\n"/utf8>>;

        {list_item, Contents} ->
            loose_list_item(
                begin
                    _pipe = Contents,
                    gleam@list:map(
                        _pipe,
                        fun(_capture) ->
                            block_to_html_safe(_capture, Refs, false)
                        end
                    )
                end
            );

        {tight_list_item, Contents@1} ->
            Passthrough = fun(X, F) -> F(X) end,
            tight_list_item(
                Contents@1,
                Refs,
                fun block_to_html_safe/3,
                fun gleam@function:identity/1,
                Passthrough,
                Passthrough,
                Passthrough,
                fun gleam@function:identity/1
            )
    end.

-spec block_to_html(
    commonmark@ast:block_node(),
    gleam@dict:dict(binary(), commonmark@ast:reference_()),
    boolean()
) -> {ok, binary()} | {error, commonmark@ast:render_error()}.
block_to_html(Block, Refs, Tight) ->
    case Block of
        {alert_block, _, Contents} ->
            _pipe = Contents,
            _pipe@1 = gleam@list:map(
                _pipe,
                fun(_capture) -> block_to_html(_capture, Refs, false) end
            ),
            _pipe@2 = gleam@result:all(_pipe@1),
            gleam@result:map(_pipe@2, fun blockquote/1);

        {block_quote, Contents} ->
            _pipe = Contents,
            _pipe@1 = gleam@list:map(
                _pipe,
                fun(_capture) -> block_to_html(_capture, Refs, false) end
            ),
            _pipe@2 = gleam@result:all(_pipe@1),
            gleam@result:map(_pipe@2, fun blockquote/1);

        {code_block, Language, _, Contents@1} ->
            {ok,
                code(
                    begin
                        _pipe@3 = Contents@1,
                        sanitize_plain_text(_pipe@3)
                    end,
                    Language
                )};

        {heading, Level, Contents@2} ->
            _pipe@4 = Contents@2,
            _pipe@5 = gleam@list:map(
                _pipe@4,
                fun(_capture@1) -> inline_to_html(_capture@1, Refs) end
            ),
            _pipe@6 = gleam@result:all(_pipe@5),
            gleam@result:map(
                _pipe@6,
                fun(_capture@2) -> header(_capture@2, Level) end
            );

        horizontal_break ->
            {ok, <<"<hr />\n"/utf8>>};

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

        {ordered_list, Items, 1, _} ->
            _pipe@7 = Items,
            _pipe@8 = gleam@list:map(
                _pipe@7,
                fun(_capture@3) -> list_item_to_html(_capture@3, Refs) end
            ),
            _pipe@9 = gleam@result:all(_pipe@8),
            gleam@result:map(
                _pipe@9,
                fun(_capture@4) -> ol(_capture@4, none) end
            );

        {ordered_list, Items@1, Start, _} ->
            _pipe@10 = Items@1,
            _pipe@11 = gleam@list:map(
                _pipe@10,
                fun(_capture@5) -> list_item_to_html(_capture@5, Refs) end
            ),
            _pipe@12 = gleam@result:all(_pipe@11),
            gleam@result:map(
                _pipe@12,
                fun(_capture@6) -> ol(_capture@6, {some, Start}) end
            );

        {paragraph, Contents@3} when Tight ->
            _pipe@13 = Contents@3,
            _pipe@14 = gleam@list:map(
                _pipe@13,
                fun(_capture@7) -> inline_to_html(_capture@7, Refs) end
            ),
            _pipe@15 = gleam@result:all(_pipe@14),
            gleam@result:map(
                _pipe@15,
                fun(_capture@8) ->
                    gleam@string:join(_capture@8, <<""/utf8>>)
                end
            );

        {paragraph, Contents@4} ->
            _pipe@16 = Contents@4,
            _pipe@17 = gleam@list:map(
                _pipe@16,
                fun(_capture@9) -> inline_to_html(_capture@9, Refs) end
            ),
            _pipe@18 = gleam@result:all(_pipe@17),
            gleam@result:map(_pipe@18, fun p/1);

        {unordered_list, Items@2, _} ->
            _pipe@19 = Items@2,
            _pipe@20 = gleam@list:map(
                _pipe@19,
                fun(_capture@10) -> list_item_to_html(_capture@10, Refs) end
            ),
            _pipe@21 = gleam@result:all(_pipe@20),
            gleam@result:map(_pipe@21, fun ul/1)
    end.

-spec list_item_to_html(
    commonmark@ast:list_item(),
    gleam@dict:dict(binary(), commonmark@ast:reference_())
) -> {ok, binary()} | {error, commonmark@ast:render_error()}.
list_item_to_html(Item, Refs) ->
    case Item of
        {list_item, []} ->
            {ok, <<"<li></li>\n"/utf8>>};

        {tight_list_item, []} ->
            {ok, <<"<li></li>\n"/utf8>>};

        {list_item, Contents} ->
            _pipe = Contents,
            _pipe@1 = gleam@list:map(
                _pipe,
                fun(_capture) -> block_to_html(_capture, Refs, false) end
            ),
            _pipe@2 = gleam@result:all(_pipe@1),
            gleam@result:map(_pipe@2, fun loose_list_item/1);

        {tight_list_item, Contents@1} ->
            tight_list_item(
                Contents@1,
                Refs,
                fun block_to_html/3,
                fun gleam@result:all/1,
                fun gleam@result:'try'/2,
                fun gleam@result:map/2,
                fun(X, F) ->
                    gleam@result:'try'(
                        erlang:element(1, X),
                        fun(First) ->
                            gleam@result:'try'(
                                erlang:element(2, X),
                                fun(Last) -> {ok, F({First, Last})} end
                            )
                        end
                    )
                end,
                fun(Field@0) -> {ok, Field@0} end
            )
    end.

-spec inline_to_html(
    commonmark@ast:inline_node(),
    gleam@dict:dict(binary(), commonmark@ast:reference_())
) -> {ok, binary()} | {error, commonmark@ast:render_error()}.
inline_to_html(Inline, Refs) ->
    case Inline of
        {emphasis, Contents, _} ->
            _pipe = inline_list_to_html(Contents, Refs),
            gleam@result:map(
                _pipe,
                fun(C) -> <<<<"<em>"/utf8, C/binary>>/binary, "</em>"/utf8>> end
            );

        {strong_emphasis, Contents@1, _} ->
            _pipe@1 = inline_list_to_html(Contents@1, Refs),
            gleam@result:map(
                _pipe@1,
                fun(C@1) ->
                    <<<<"<strong>"/utf8, C@1/binary>>/binary, "</strong>"/utf8>>
                end
            );

        {strike_through, Contents@2} ->
            _pipe@2 = inline_list_to_html(Contents@2, Refs),
            gleam@result:map(
                _pipe@2,
                fun(C@2) ->
                    <<<<"<del>"/utf8, C@2/binary>>/binary, "</del>"/utf8>>
                end
            );

        {html_inline, Html} ->
            {ok, Html};

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

        {image, Alt, Title, Href} ->
            Title@1 = begin
                _pipe@3 = Title,
                _pipe@4 = gleam@option:map(
                    _pipe@3,
                    fun(T) ->
                        <<<<" title=\""/utf8, (sanitize_plain_text(T))/binary>>/binary,
                            "\""/utf8>>
                    end
                ),
                gleam@option:unwrap(_pipe@4, <<""/utf8>>)
            end,
            {ok,
                <<<<<<<<<<<<"<img src=\""/utf8,
                                        (sanitize_href_property(Href))/binary>>/binary,
                                    "\" alt=\""/utf8>>/binary,
                                Alt/binary>>/binary,
                            "\""/utf8>>/binary,
                        Title@1/binary>>/binary,
                    " />"/utf8>>};

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

        {link, Contents@3, Title@2, Href@1} ->
            Title@3 = begin
                _pipe@5 = Title@2,
                _pipe@6 = gleam@option:map(
                    _pipe@5,
                    fun(T@1) ->
                        <<<<" title=\""/utf8,
                                (sanitize_plain_text(T@1))/binary>>/binary,
                            "\""/utf8>>
                    end
                ),
                gleam@option:unwrap(_pipe@6, <<""/utf8>>)
            end,
            _pipe@7 = inline_list_to_html(Contents@3, Refs),
            gleam@result:map(
                _pipe@7,
                fun(C@3) ->
                    <<<<<<<<<<<<"<a href=\""/utf8,
                                            (sanitize_href_property(Href@1))/binary>>/binary,
                                        "\""/utf8>>/binary,
                                    Title@3/binary>>/binary,
                                ">"/utf8>>/binary,
                            C@3/binary>>/binary,
                        "</a>"/utf8>>
                end
            );

        _ ->
            {ok, inline_to_html_safe(Inline, Refs)}
    end.

-spec inline_list_to_html(
    list(commonmark@ast:inline_node()),
    gleam@dict:dict(binary(), commonmark@ast:reference_())
) -> {ok, binary()} | {error, commonmark@ast:render_error()}.
inline_list_to_html(Nodes, Refs) ->
    _pipe = Nodes,
    _pipe@1 = gleam@list:map(
        _pipe,
        fun(_capture) -> inline_to_html(_capture, Refs) end
    ),
    _pipe@2 = gleam@result:all(_pipe@1),
    gleam@result:map(
        _pipe@2,
        fun(_capture@1) -> gleam@string:join(_capture@1, <<""/utf8>>) end
    ).

-spec inline_to_html_safe(
    commonmark@ast:inline_node(),
    gleam@dict:dict(binary(), commonmark@ast:reference_())
) -> binary().
inline_to_html_safe(Inline, Refs) ->
    case Inline of
        {code_span, Contents} ->
            <<<<"<code>"/utf8, (sanitize_plain_text(Contents))/binary>>/binary,
                "</code>"/utf8>>;

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

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

        {html_inline, Html} ->
            Html;

        {plain_text, Contents@1} ->
            sanitize_plain_text(Contents@1);

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

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

        {emphasis, Contents@2, _} ->
            <<<<"<em>"/utf8,
                    (inline_list_to_html_safe(Contents@2, Refs))/binary>>/binary,
                "</em>"/utf8>>;

        {strong_emphasis, Contents@3, _} ->
            <<<<"<strong>"/utf8,
                    (inline_list_to_html_safe(Contents@3, Refs))/binary>>/binary,
                "</strong>"/utf8>>;

        {strike_through, Contents@4} ->
            <<<<"<del>"/utf8,
                    (inline_list_to_html_safe(Contents@4, Refs))/binary>>/binary,
                "</del>"/utf8>>;

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

        {image, Alt, Title, Href@1} ->
            Title@1 = begin
                _pipe = Title,
                _pipe@1 = gleam@option:map(
                    _pipe,
                    fun(T) ->
                        <<<<" title=\""/utf8, (sanitize_plain_text(T))/binary>>/binary,
                            "\""/utf8>>
                    end
                ),
                gleam@option:unwrap(_pipe@1, <<""/utf8>>)
            end,
            <<<<<<<<<<<<"<img src=\""/utf8,
                                    (sanitize_href_property(Href@1))/binary>>/binary,
                                "\" alt=\""/utf8>>/binary,
                            Alt/binary>>/binary,
                        "\""/utf8>>/binary,
                    Title@1/binary>>/binary,
                " />"/utf8>>;

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

        {link, Contents@5, Title@2, Href@2} ->
            Title@3 = begin
                _pipe@2 = Title@2,
                _pipe@3 = gleam@option:map(
                    _pipe@2,
                    fun(T@1) ->
                        <<<<" title=\""/utf8,
                                (sanitize_plain_text(T@1))/binary>>/binary,
                            "\""/utf8>>
                    end
                ),
                gleam@option:unwrap(_pipe@3, <<""/utf8>>)
            end,
            <<<<<<<<<<<<"<a href=\""/utf8,
                                    (sanitize_href_property(Href@2))/binary>>/binary,
                                "\""/utf8>>/binary,
                            Title@3/binary>>/binary,
                        ">"/utf8>>/binary,
                    (inline_list_to_html_safe(Contents@5, Refs))/binary>>/binary,
                "</a>"/utf8>>
    end.

-spec inline_list_to_html_safe(
    list(commonmark@ast:inline_node()),
    gleam@dict:dict(binary(), commonmark@ast:reference_())
) -> binary().
inline_list_to_html_safe(Nodes, Refs) ->
    _pipe = Nodes,
    _pipe@1 = gleam@list:map(
        _pipe,
        fun(_capture) -> inline_to_html_safe(_capture, Refs) end
    ),
    gleam@string:join(_pipe@1, <<""/utf8>>).