-module(internal@html).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/internal/html.gleam").
-export([element/3, text/1, parse_/1, parse/1]).

-file("src/internal/html.gleam", 6).
-spec element(
    binary(),
    list({binary(), binary()}),
    list(presentable_soup:element_tree())
) -> presentable_soup:element_tree().
element(Tag, Attrs, Children) ->
    {element_node, Tag, Attrs, Children}.

-file("src/internal/html.gleam", 10).
-spec text(binary()) -> presentable_soup:element_tree().
text(Text) ->
    {text_node, Text}.

-file("src/internal/html.gleam", 14).
-spec is_tag(presentable_soup:element_tree(), binary()) -> boolean().
is_tag(El, Tag) ->
    case El of
        {element_node, T, _, _} ->
            T =:= Tag;

        {text_node, _} ->
            false
    end.

-file("src/internal/html.gleam", 21).
-spec with_body(list(presentable_soup:element_tree())) -> list(presentable_soup:element_tree()).
with_body(Children) ->
    _pipe = Children,
    lists:append(_pipe, [{element_node, <<"body"/utf8>>, [], []}]).

-file("src/internal/html.gleam", 25).
-spec in_body(list(presentable_soup:element_tree())) -> list(presentable_soup:element_tree()).
in_body(Children) ->
    [{element_node, <<"body"/utf8>>, [], Children}].

-file("src/internal/html.gleam", 29).
-spec with_head(list(presentable_soup:element_tree())) -> list(presentable_soup:element_tree()).
with_head(Children) ->
    [{element_node, <<"head"/utf8>>, [], []} | Children].

-file("src/internal/html.gleam", 33).
-spec ensure_root(presentable_soup:element_tree()) -> presentable_soup:element_tree().
ensure_root(Root) ->
    case Root of
        {text_node, _} ->
            {element_node,
                <<"html"/utf8>>,
                [],
                begin
                    _pipe = [Root],
                    _pipe@1 = in_body(_pipe),
                    with_head(_pipe@1)
                end};

        {element_node, Tag, _, Children} ->
            Head = begin
                _pipe@2 = Children,
                gleam@list:find(
                    _pipe@2,
                    fun(_capture) -> is_tag(_capture, <<"head"/utf8>>) end
                )
            end,
            Body = begin
                _pipe@3 = Children,
                gleam@list:find(
                    _pipe@3,
                    fun(_capture@1) -> is_tag(_capture@1, <<"body"/utf8>>) end
                )
            end,
            case Tag of
                <<"body"/utf8>> ->
                    {element_node,
                        <<"html"/utf8>>,
                        [],
                        begin
                            _pipe@4 = [Root],
                            with_head(_pipe@4)
                        end};

                <<"head"/utf8>> ->
                    {element_node,
                        <<"html"/utf8>>,
                        [],
                        begin
                            _pipe@5 = [Root],
                            with_body(_pipe@5)
                        end};

                <<"html"/utf8>> ->
                    case {Head, Body} of
                        {{ok, _}, {ok, _}} ->
                            Root;

                        {{ok, _}, {error, _}} ->
                            {element_node,
                                erlang:element(2, Root),
                                erlang:element(3, Root),
                                begin
                                    _pipe@6 = Children,
                                    with_body(_pipe@6)
                                end};

                        {{error, _}, {ok, _}} ->
                            {element_node,
                                erlang:element(2, Root),
                                erlang:element(3, Root),
                                begin
                                    _pipe@7 = Children,
                                    with_head(_pipe@7)
                                end};

                        {{error, _}, {error, _}} ->
                            {element_node,
                                erlang:element(2, Root),
                                erlang:element(3, Root),
                                begin
                                    _pipe@8 = erlang:element(4, Root),
                                    _pipe@9 = in_body(_pipe@8),
                                    with_head(_pipe@9)
                                end}
                    end;

                _ ->
                    {element_node,
                        <<"html"/utf8>>,
                        [],
                        [{element_node, <<"head"/utf8>>, [], []},
                            {element_node, <<"body"/utf8>>, [], [Root]}]}
            end
    end.

-file("src/internal/html.gleam", 76).
-spec parse_(binary()) -> {ok, presentable_soup:element_tree()} |
    {error, binary()}.
parse_(Html) ->
    _pipe = presentable_soup:element(
        [presentable_soup:with_tag(<<"html"/utf8>>)]
    ),
    _pipe@1 = presentable_soup:return(_pipe, presentable_soup:element_tree()),
    _pipe@2 = presentable_soup:scrape(_pipe@1, Html),
    gleam@result:replace_error(_pipe@2, <<"presentable_soup error"/utf8>>).

-file("src/internal/html.gleam", 83).
-spec parse(binary()) -> {ok, presentable_soup:element_tree()} |
    {error, binary()}.
parse(Html) ->
    _pipe = Html,
    _pipe@1 = gleam@string:trim(_pipe),
    _pipe@2 = parse_(_pipe@1),
    gleam@result:map(_pipe@2, fun ensure_root/1).