#include <AK/Utf16String.h>
#include <AK/Variant.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/Value.h>
#include <LibJS/Runtime/ValueInlines.h>
#include <LibWeb/Bindings/ExceptionOrUtils.h>
#include <LibWeb/Bindings/HTMLCollection.h>
#include <LibWeb/Bindings/HTMLFormControlsCollection.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/DOM/Element.h>
#include <LibWeb/HTML/HTMLFormControlsCollection.h>
#include <LibWeb/HTML/RadioNodeList.h>
#include <LibWeb/WebIDL/AbstractOperations.h>
#include <LibWeb/WebIDL/Tracing.h>

namespace Web::Bindings {

void HTMLFormControlsCollectionConstructor::initialize(JS::Realm& realm, JS::NativeFunction& object)
{
    auto& vm = realm.vm();
    [[maybe_unused]] u8 default_attributes = JS::Attribute::Enumerable;

    object.set_prototype(&ensure_web_constructor<HTMLCollectionPrototype>(realm, "HTMLCollection"_fly_string));
    object.define_direct_property(vm.names.length, JS::Value(0), JS::Attribute::Configurable);
    object.define_direct_property(vm.names.name, JS::PrimitiveString::create(vm, "HTMLFormControlsCollection"_utf16), JS::Attribute::Configurable);
    object.define_direct_property(vm.names.prototype, &ensure_web_prototype<HTMLFormControlsCollectionPrototype>(realm, "HTMLFormControlsCollection"_fly_string), 0);
}

JS::ThrowCompletionOr<GC::Ref<JS::Object>> HTMLFormControlsCollectionConstructor::construct([[maybe_unused]] InterfaceConstructor& constructor, [[maybe_unused]] JS::FunctionObject& new_target)
{
    WebIDL::log_trace(constructor.vm(), "HTMLFormControlsCollectionConstructor::construct");
    return constructor.vm().throw_completion<JS::TypeError>(JS::ErrorType::NotAConstructor, "HTMLFormControlsCollection");
}

GC_DEFINE_ALLOCATOR(HTMLFormControlsCollectionPrototype);

HTMLFormControlsCollectionPrototype::HTMLFormControlsCollectionPrototype([[maybe_unused]] JS::Realm& realm)
    : Object(ConstructWithPrototypeTag::Tag, GC::Ref { ensure_web_prototype<HTMLCollectionPrototype>(realm, "HTMLCollection"_fly_string) })
{
}

HTMLFormControlsCollectionPrototype::~HTMLFormControlsCollectionPrototype()
{
}


void HTMLFormControlsCollectionPrototype::initialize(JS::Realm& realm)
{
    auto& object = *this;
    [[maybe_unused]] auto& vm = realm.vm();
    [[maybe_unused]] u8 default_attributes = JS::Attribute::Enumerable | JS::Attribute::Configurable | JS::Attribute::Writable;

    object.set_prototype(GC::Ref { ensure_web_prototype<HTMLCollectionPrototype>(realm, "HTMLCollection"_fly_string) });
    object.define_native_function(realm, "namedItem"_utf16_fly_string, named_item, 1, default_attributes);

    object.define_direct_property(vm.well_known_symbol_to_string_tag(), JS::PrimitiveString::create(vm, "HTMLFormControlsCollection"_utf16), JS::Attribute::Configurable);
    Base::initialize(realm);
}

void HTMLFormControlsCollectionPrototype::define_unforgeable_attributes(JS::Realm& realm, [[maybe_unused]] JS::Object& object)
{
    [[maybe_unused]] auto& vm = realm.vm();
    [[maybe_unused]] u8 default_attributes = JS::Attribute::Enumerable;
}

[[maybe_unused]] static JS::ThrowCompletionOr<HTML::HTMLFormControlsCollection*> impl_from(JS::VM& vm, JS::Value js_value)
{

    if (auto impl = js_value.as_if<HTML::HTMLFormControlsCollection>())
        return impl.ptr();
    return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "HTMLFormControlsCollection");
}

[[maybe_unused]] static JS::ThrowCompletionOr<HTML::HTMLFormControlsCollection*> impl_from(JS::VM& vm)
{
    auto this_value = vm.this_value();
    if (this_value.is_nullish())
        this_value = &vm.current_realm()->global_object();
    return impl_from(vm, this_value);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLFormControlsCollectionPrototype::named_item)
{
    WebIDL::log_trace(vm, "HTMLFormControlsCollectionPrototype::named_item");
    [[maybe_unused]] auto* idl_object = TRY(impl_from(vm));

    if (vm.argument_count() < 1)
        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountOne, "namedItem");

    auto arg0 = vm.argument(0);
    auto name = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<Utf16String> {
        return TRY(WebIDL::to_utf16_string(vm, arg0));
    }(); }));



    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->named_item_or_radio_node_list(name); }));
    return R.visit(
        [&](GC::Ref<HTML::RadioNodeList> const& visited_union_value0) -> JS::Value
        {
            return JS::Value(visited_union_value0);
        },
        [&](GC::Ref<DOM::Element> const& visited_union_value1) -> JS::Value
        {
            return JS::Value(visited_union_value1);
        },
        [](Empty) -> JS::Value
        {
            return JS::js_null();
        }
    );
}

} // namespace Web::Bindings