/*

 * Copyright (c) 2021, the SerenityOS developers.

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#include <LibWeb/Bindings/ExceptionOrUtils.h>

#include <LibWeb/Bindings/HTMLImageElementPrototype.h>

#include <LibWeb/Bindings/ImageConstructor.h>

#include <LibWeb/DOM/ElementFactory.h>

#include <LibWeb/HTML/Scripting/Environments.h>

#include <LibWeb/HTML/Window.h>

#include <LibWeb/Namespace.h>

namespace Web::Bindings {

JS_DEFINE_ALLOCATOR(ImageConstructor);

ImageConstructor::ImageConstructor(JS::Realm& realm)

    : NativeFunction(realm.intrinsics().function_prototype())

{

}

void ImageConstructor::initialize(JS::Realm& realm)

{

    auto& vm = this->vm();

    Base::initialize(realm);

    define_direct_property(vm.names.prototype, &ensure_web_prototype<Bindings::HTMLImageElementPrototype>(realm, "HTMLImageElement"_fly_string), 0);

    define_direct_property(vm.names.length, JS::Value(0), JS::Attribute::Configurable);

}

JS::ThrowCompletionOr<JS::Value> ImageConstructor::call()

{

    return vm().throw_completion<JS::TypeError>(JS::ErrorType::ConstructorWithoutNew, "Image");

}

// https://html.spec.whatwg.org/multipage/embedded-content.html#dom-image

JS::ThrowCompletionOr<JS::NonnullGCPtr<JS::Object>> ImageConstructor::construct(FunctionObject&)

{

    auto& vm = this->vm();

    // 1. Let document be the current global object's associated Document.

    auto& window = verify_cast<HTML::Window>(HTML::current_global_object());

    auto& document = window.associated_document();

    // 2. Let img be the result of creating an element given document, img, and the HTML namespace.

    auto image_element = TRY(Bindings::throw_dom_exception_if_needed(vm, [&]() { return DOM::create_element(document, HTML::TagNames::img, Namespace::HTML); }));

    // 3. If width is given, then set an attribute value for img using "width" and width.

    if (vm.argument_count() > 0) {

        u32 width = TRY(vm.argument(0).to_u32(vm));

        MUST(image_element->set_attribute(HTML::AttributeNames::width, MUST(String::formatted("{}", width))));

    }

    // 4. If height is given, then set an attribute value for img using "height" and height.

    if (vm.argument_count() > 1) {

        u32 height = TRY(vm.argument(1).to_u32(vm));

        MUST(image_element->set_attribute(HTML::AttributeNames::height, MUST(String::formatted("{}", height))));

    }

    // 5. Return img.

    return image_element;

}

}