/*
 * Copyright (c) 2022, kleines Filmröllchen <filmroellchen@serenityos.org>
 * Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include "Slide.h"
#include "Presentation.h"
#include <AK/JsonObject.h>

Slide::Slide(NonnullRefPtrVector<SlideObject> slide_objects, DeprecatedString title)
    : m_slide_objects(move(slide_objects))
    , m_title(move(title))
{
}

ErrorOr<Slide> Slide::parse_slide(JsonObject const& slide_json)
{
    // FIXME: Use the text with the "title" role for a title, if there is no title given.
    auto title = slide_json.get_deprecated_string("title"sv).value_or("Untitled slide");

    auto maybe_slide_objects = slide_json.get_array("objects"sv);
    if (!maybe_slide_objects.has_value())
        return Error::from_string_view("Slide objects must be an array"sv);

    auto const& json_slide_objects = maybe_slide_objects.value();
    NonnullRefPtrVector<SlideObject> slide_objects;
    for (auto const& maybe_slide_object_json : json_slide_objects.values()) {
        if (!maybe_slide_object_json.is_object())
            return Error::from_string_view("Slides must be objects"sv);
        auto const& slide_object_json = maybe_slide_object_json.as_object();

        auto slide_object = TRY(SlideObject::parse_slide_object(slide_object_json));
        slide_objects.append(move(slide_object));
    }

    return Slide { move(slide_objects), title };
}

ErrorOr<HTMLElement> Slide::render(Presentation const& presentation) const
{
    HTMLElement wrapper;
    wrapper.tag_name = "div"sv;
    for (auto const& object : m_slide_objects)
        TRY(wrapper.children.try_append(TRY(object.render(presentation))));
    return wrapper;
}