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

-export([render/1]).
-export_type([feed/0, generator/0, person/0, link/0, category/0, entry/0, text_media_type/0, text_content/0, content/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(
    " Atom feeds! See the RFC for details:\n"
    " <https://www.ietf.org/rfc/rfc4287.txt>\n"
).

-type feed() :: {feed,
        binary(),
        binary(),
        gleam@time@timestamp:timestamp(),
        gleam@option:option(text_content()),
        gleam@option:option(text_content()),
        gleam@option:option(binary()),
        gleam@option:option(binary()),
        list(person()),
        list(link()),
        list(category()),
        list(person()),
        gleam@option:option(generator()),
        list(entry())}.

-type generator() :: {generator,
        binary(),
        gleam@option:option(binary()),
        gleam@option:option(binary())}.

-type person() :: {person,
        binary(),
        gleam@option:option(binary()),
        gleam@option:option(binary())}.

-type link() :: {link, binary(), gleam@option:option(binary())}.

-type category() :: {category,
        binary(),
        gleam@option:option(binary()),
        gleam@option:option(binary())}.

-type entry() :: {entry,
        binary(),
        binary(),
        gleam@time@timestamp:timestamp(),
        gleam@option:option(content()),
        gleam@option:option(text_content()),
        list(category()),
        list(link()),
        list(person()),
        list(person()),
        gleam@option:option(gleam@time@timestamp:timestamp()),
        gleam@option:option(binary())}.

-type text_media_type() :: text | html | xhtml.

-type text_content() :: {text_content, text_media_type(), binary()}.

-type content() :: {inline_text, text_media_type(), binary()} |
    {out_of_line, binary(), binary()}.

-file("src/atomb.gleam", 123).
-spec generator(generator()) -> xmb:xml().
generator(Generator) ->
    {generator, T, Uri, Version} = Generator,
    Values = [gleam@option:map(Uri, fun(S) -> {<<"uri"/utf8>>, S} end),
        gleam@option:map(Version, fun(S@1) -> {<<"version"/utf8>>, S@1} end)],
    xmb:x(<<"generator"/utf8>>, gleam@option:values(Values), [xmb:text(T)]).

-file("src/atomb.gleam", 170).
-spec timestamp_element(binary(), gleam@time@timestamp:timestamp()) -> xmb:xml().
timestamp_element(Tag, Timestamp) ->
    xmb:x(
        Tag,
        [],
        [xmb:text(gleam@time@timestamp:to_rfc3339(Timestamp, {duration, 0, 0}))]
    ).

-file("src/atomb.gleam", 174).
-spec category(category()) -> xmb:xml().
category(Category) ->
    {category, Term, Scheme, Label} = Category,
    Values = [{some, {<<"term"/utf8>>, Term}},
        gleam@option:map(Scheme, fun(S) -> {<<"scheme"/utf8>>, S} end),
        gleam@option:map(Label, fun(S@1) -> {<<"label"/utf8>>, S@1} end)],
    xmb:x(<<"category"/utf8>>, gleam@option:values(Values), []).

-file("src/atomb.gleam", 184).
-spec link(link()) -> xmb:xml().
link(Link) ->
    {link, Href, Rel} = Link,
    Values = [{some, {<<"href"/utf8>>, Href}},
        gleam@option:map(Rel, fun(S) -> {<<"rel"/utf8>>, S} end)],
    xmb:x(<<"link"/utf8>>, gleam@option:values(Values), []).

-file("src/atomb.gleam", 202).
-spec text_element(binary(), binary()) -> xmb:xml().
text_element(Name, Content) ->
    xmb:x(Name, [], [xmb:text(Content)]).

-file("src/atomb.gleam", 206).
-spec text_content(binary(), text_content()) -> xmb:xml().
text_content(Name, Content) ->
    {Media_type, Content@1} = case erlang:element(2, Content) of
        html ->
            {<<"html"/utf8>>, xmb:cdata(erlang:element(3, Content))};

        text ->
            {<<"text"/utf8>>, xmb:text(erlang:element(3, Content))};

        xhtml ->
            {<<"xhtml"/utf8>>,
                begin
                    _pipe = erlang:element(3, Content),
                    _pipe@1 = gleam_stdlib:identity(_pipe),
                    xmb_ffi:identity(_pipe@1)
                end}
    end,
    xmb:x(Name, [{<<"type"/utf8>>, Media_type}], [Content@1]).

-file("src/atomb.gleam", 161).
-spec content_element(content()) -> xmb:xml().
content_element(Content) ->
    case Content of
        {inline_text, Media_type, Content@1} ->
            text_content(
                <<"content"/utf8>>,
                {text_content, Media_type, Content@1}
            );

        {out_of_line, Media_type@1, Src_uri} ->
            xmb:x(
                <<"content"/utf8>>,
                [{<<"type"/utf8>>, Media_type@1}, {<<"src"/utf8>>, Src_uri}],
                []
            )
    end.

-file("src/atomb.gleam", 220).
-spec 'maybe'(gleam@option:option(FIU), fun((FIU) -> xmb:xml())) -> xmb:xml().
'maybe'(Item, Render) ->
    case Item of
        {some, Value} ->
            Render(Value);

        none ->
            xmb:nothing()
    end.

-file("src/atomb.gleam", 193).
-spec person(binary(), person()) -> xmb:xml().
person(Tag, Person) ->
    {person, Name, Uri, Email} = Person,
    xmb:x(
        Tag,
        [],
        [xmb:x(<<"name"/utf8>>, [], [xmb:text(Name)]),
            'maybe'(
                Uri,
                fun(_capture) -> text_element(<<"uri"/utf8>>, _capture) end
            ),
            'maybe'(
                Email,
                fun(_capture@1) ->
                    text_element(<<"email"/utf8>>, _capture@1)
                end
            )]
    ).

-file("src/atomb.gleam", 227).
-spec many(list(FIW), fun((FIW) -> xmb:xml())) -> xmb:xml().
many(Items, Render) ->
    _pipe = gleam@list:map(Items, Render),
    xmb_ffi:identity(_pipe).

-file("src/atomb.gleam", 132).
-spec entry(entry()) -> xmb:xml().
entry(Entry) ->
    {entry,
        Id,
        Title,
        Updated,
        Content,
        Summary,
        Categories,
        Links,
        Authors,
        Contributors,
        Published,
        Rights} = Entry,
    xmb:x(
        <<"entry"/utf8>>,
        [],
        [xmb:x(<<"title"/utf8>>, [], [xmb:text(Title)]),
            xmb:x(<<"id"/utf8>>, [], [xmb:text(Id)]),
            timestamp_element(<<"updated"/utf8>>, Updated),
            'maybe'(
                Summary,
                fun(_capture) -> text_content(<<"summary"/utf8>>, _capture) end
            ),
            'maybe'(
                Rights,
                fun(_capture@1) ->
                    text_element(<<"rights"/utf8>>, _capture@1)
                end
            ),
            'maybe'(
                Published,
                fun(_capture@2) ->
                    timestamp_element(<<"published"/utf8>>, _capture@2)
                end
            ),
            many(Categories, fun category/1),
            many(
                Authors,
                fun(_capture@3) -> person(<<"author"/utf8>>, _capture@3) end
            ),
            many(
                Contributors,
                fun(_capture@4) ->
                    person(<<"contributor"/utf8>>, _capture@4)
                end
            ),
            many(Links, fun link/1),
            'maybe'(Content, fun content_element/1)]
    ).

-file("src/atomb.gleam", 87).
-spec render(feed()) -> gleam@string_tree:string_tree().
render(Feed) ->
    {feed,
        Title,
        Id,
        Updated,
        Subtitle,
        Rights,
        Icon,
        Logo,
        Authors,
        Links,
        Categories,
        Contributors,
        Gen,
        Entries} = Feed,
    _pipe = xmb:x(
        <<"feed"/utf8>>,
        [{<<"xmlns"/utf8>>, <<"http://www.w3.org/2005/Atom"/utf8>>}],
        [xmb:x(<<"title"/utf8>>, [], [xmb:text(Title)]),
            xmb:x(<<"id"/utf8>>, [], [xmb:text(Id)]),
            xmb:x(
                <<"updated"/utf8>>,
                [],
                [xmb:text(
                        gleam@time@timestamp:to_rfc3339(
                            Updated,
                            {duration, 0, 0}
                        )
                    )]
            ),
            'maybe'(
                Subtitle,
                fun(_capture) -> text_content(<<"subtitle"/utf8>>, _capture) end
            ),
            'maybe'(
                Rights,
                fun(_capture@1) ->
                    text_content(<<"rights"/utf8>>, _capture@1)
                end
            ),
            'maybe'(
                Icon,
                fun(_capture@2) -> text_element(<<"icon"/utf8>>, _capture@2) end
            ),
            'maybe'(
                Logo,
                fun(_capture@3) -> text_element(<<"logo"/utf8>>, _capture@3) end
            ),
            'maybe'(Gen, fun generator/1),
            many(
                Authors,
                fun(_capture@4) -> person(<<"author"/utf8>>, _capture@4) end
            ),
            many(
                Contributors,
                fun(_capture@5) ->
                    person(<<"contributor"/utf8>>, _capture@5)
                end
            ),
            many(Links, fun link/1),
            many(Categories, fun category/1),
            many(Entries, fun entry/1)]
    ),
    _pipe@1 = gleam@list:wrap(_pipe),
    xmb:render(_pipe@1).