#include <AK/Optional.h>
#include <AK/String.h>
#include <AK/TypeCasts.h>
#include <AK/Utf16FlyString.h>
#include <AK/Utf16String.h>
#include <LibGC/Ptr.h>
#include <LibJS/Runtime/AbstractOperations.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/PropertyKey.h>
#include <LibJS/Runtime/Realm.h>
#include <LibJS/Runtime/Value.h>
#include <LibJS/Runtime/ValueInlines.h>
#include <LibWeb/Bindings/ExceptionOrUtils.h>
#include <LibWeb/Bindings/HTMLElement.h>
#include <LibWeb/Bindings/HTMLOutputElement.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Bindings/MainThreadVM.h>
#include <LibWeb/DOM/DOMTokenList.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/Element.h>
#include <LibWeb/DOM/ElementFactory.h>
#include <LibWeb/DOM/NodeList.h>
#include <LibWeb/HTML/CustomElements/CustomElementDefinition.h>
#include <LibWeb/HTML/CustomElements/CustomElementRegistry.h>
#include <LibWeb/HTML/HTMLFormElement.h>
#include <LibWeb/HTML/HTMLOutputElement.h>
#include <LibWeb/HTML/Scripting/SimilarOriginWindowAgent.h>
#include <LibWeb/HTML/ValidityState.h>
#include <LibWeb/HTML/Window.h>
#include <LibWeb/WebIDL/AbstractOperations.h>
#include <LibWeb/WebIDL/Tracing.h>

namespace Web::Bindings {

void HTMLOutputElementConstructor::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<HTMLElementPrototype>(realm, "HTMLElement"_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, "HTMLOutputElement"_utf16), JS::Attribute::Configurable);
    object.define_direct_property(vm.names.prototype, &ensure_web_prototype<HTMLOutputElementPrototype>(realm, "HTMLOutputElement"_fly_string), 0);
}

JS::ThrowCompletionOr<GC::Ref<JS::Object>> HTMLOutputElementConstructor::construct([[maybe_unused]] InterfaceConstructor& constructor, [[maybe_unused]] JS::FunctionObject& new_target)
{
    WebIDL::log_trace(constructor.vm(), "HTMLOutputElementConstructor::construct");
    auto& vm = constructor.vm();
    auto& realm = *vm.current_realm();
    auto& window = as<HTML::Window>(HTML::current_global_object());

    // 1. If NewTarget is equal to the active function object, then throw a TypeError.
    if (&new_target == vm.active_function_object())
        return vm.throw_completion<JS::TypeError>("Cannot directly construct an HTML element, it must be inherited"_utf16);

    // 2. Let registry be null.
    GC::Ptr<HTML::CustomElementRegistry> registry;

    // 3. If the surrounding agent's active custom element constructor map[NewTarget] exists:
    auto& surrounding_agent = HTML::relevant_similar_origin_window_agent(window);
    if (auto registry_for_constructor = surrounding_agent.active_custom_element_constructor_map.get(GC::Ref { new_target }); registry_for_constructor.has_value() && !registry_for_constructor->is_null()) {
        // 1. Set registry to the surrounding agent's active custom element constructor map[NewTarget].
        registry = registry_for_constructor.value();

        // 2. Remove the surrounding agent's active custom element constructor map[NewTarget].
        surrounding_agent.active_custom_element_constructor_map.remove(GC::Ref { new_target });
    }
    // 4. Otherwise, set registry to current global object's associated Document's custom element registry.
    else {
        registry = window.associated_document().custom_element_registry();
    }

    // 5. Let definition be the item in registry's custom element definition set with constructor equal to NewTarget.
    //    If there is no such item, then throw a TypeError.
    auto definition = registry->get_definition_from_new_target(new_target);
    if (!definition)
        return vm.throw_completion<JS::TypeError>("There is no custom element definition assigned to the given constructor"_utf16);

    // 6. Let isValue be null.
    Optional<Utf16FlyString> is_value;

    // 7. If definition's local name is equal to definition's name (i.e., definition is for an autonomous custom element):
    if (definition->local_name() == definition->name()) {
        // 1. If the active function object is not HTMLElement, then throw a TypeError.
        return vm.throw_completion<JS::TypeError>("Autonomous custom elements can only inherit from HTMLElement"_utf16);
    }
    // 8. Otherwise (i.e., if definition is for a customized built-in element):
    else {
        // 1. Let valid local names be the list of local names for elements defined in this specification or in other applicable specifications that use the active function object as their element interface.
        static auto const& valid_local_names = *new auto(MUST(DOM::valid_local_names_for_given_html_element_interface("HTMLOutputElement"sv)));

        // 2. If valid local names does not contain definition's local name, then throw a TypeError.
        if (!valid_local_names.contains_slow(definition->local_name()))
            return vm.throw_completion<JS::TypeError>(Utf16String::formatted("Local name '{}' of customized built-in element is not a valid local name for HTMLOutputElement", definition->local_name()));

        // 3. Set isValue to definition's name.
        is_value = definition->name();
    }

    // 9. If definition's construction stack is empty:
    if (definition->construction_stack().is_empty()) {
        // 1. Let element be the result of internally creating a new object implementing the interface to which the active function object corresponds, given the current Realm Record and NewTarget.
        // 2. Set element's node document to the current global object's associated Document.
        // 3. Set element's namespace to the HTML namespace.
        // 4. Set element's namespace prefix to null.
        // 5. Set element's local name to definition's local name.
        auto element = realm.create<HTML::HTMLOutputElement>(window.associated_document(), DOM::QualifiedName { definition->local_name(), {}, Namespace::HTML });

        // https://webidl.spec.whatwg.org/#internally-create-a-new-object-implementing-the-interface
        TRY(WebIDL::set_prototype_from_new_target<HTMLOutputElementPrototype>(vm, new_target, "HTMLOutputElement"_fly_string, *element));

        // 6. Set element's custom element registry to registry.
        element->set_custom_element_registry(registry);

        // 7. Set element's custom element state to "custom".
        // 8. Set element's custom element definition to definition.
        // 9. Set element's is value to isValue.
        element->setup_custom_element_from_constructor(*definition, is_value);

        // 10. Return element.
        return *element;
    }

    // 10. Let prototype be ? Get(NewTarget, "prototype").
    auto prototype = TRY(new_target.get(vm.names.prototype));

    // 11. If Type(prototype) is not Object, then:
    if (!prototype.is_object()) {
        // 1. Let realm be ? GetFunctionRealm(NewTarget).
        auto* function_realm = TRY(JS::get_function_realm(vm, new_target));

        // 2. Set prototype to the interface prototype object of realm whose interface is the same as the interface of the active function object.
        VERIFY(function_realm);
        prototype = &Bindings::ensure_web_prototype<HTMLOutputElementPrototype>(*function_realm, "HTMLOutputElement"_fly_string);
    }

    VERIFY(prototype.is_object());

    // 12. Let element be the last entry in definition's construction stack.
    auto& element = definition->construction_stack().last();

    // 13. If element is an already constructed marker, then throw a TypeError.
    if (element.has<HTML::AlreadyConstructedCustomElementMarker>())
        return vm.throw_completion<JS::TypeError>("Custom element has already been constructed"_utf16);

    // 14. Perform ? element.[[SetPrototypeOf]](prototype).
    auto actual_element = element.get<GC::Ref<DOM::Element>>();
    TRY(actual_element->internal_set_prototype_of(&prototype.as_object()));

    // 15. Replace the last entry in definition's construction stack with an already constructed marker.
    definition->construction_stack().last() = HTML::AlreadyConstructedCustomElementMarker {};

    // 16. Return element.
    return *actual_element;
}

void HTMLOutputElementPrototype::initialize(JS::Realm& realm, JS::Object& object)
{
    [[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<HTMLElementPrototype>(realm, "HTMLElement"_fly_string) });

    auto html_for_id = "htmlFor"_utf16_fly_string;
    auto native_html_for_getter = JS::NativeFunction::create(realm, html_for_getter, 0, html_for_id, &realm, "get"sv);
    auto native_html_for_setter = JS::NativeFunction::create(realm, html_for_setter, 1, html_for_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto html_for_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(html_for_id, native_html_for_getter, native_html_for_setter, html_for_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto form_id = "form"_utf16_fly_string;
    auto native_form_getter = JS::NativeFunction::create(realm, form_getter, 0, form_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_form_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto form_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(form_id, native_form_getter, native_form_setter, form_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto name_id = "name"_utf16_fly_string;
    auto native_name_getter = JS::NativeFunction::create(realm, name_getter, 0, name_id, &realm, "get"sv);
    auto native_name_setter = JS::NativeFunction::create(realm, name_setter, 1, name_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto name_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(name_id, native_name_getter, native_name_setter, name_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto type_id = "type"_utf16_fly_string;
    auto native_type_getter = JS::NativeFunction::create(realm, type_getter, 0, type_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_type_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto type_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(type_id, native_type_getter, native_type_setter, type_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto default_value_id = "defaultValue"_utf16_fly_string;
    auto native_default_value_getter = JS::NativeFunction::create(realm, default_value_getter, 0, default_value_id, &realm, "get"sv);
    auto native_default_value_setter = JS::NativeFunction::create(realm, default_value_setter, 1, default_value_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto default_value_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(default_value_id, native_default_value_getter, native_default_value_setter, default_value_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto value_id = "value"_utf16_fly_string;
    auto native_value_getter = JS::NativeFunction::create(realm, value_getter, 0, value_id, &realm, "get"sv);
    auto native_value_setter = JS::NativeFunction::create(realm, value_setter, 1, value_id, &realm, "set"sv);

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto value_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(value_id, native_value_getter, native_value_setter, value_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto will_validate_id = "willValidate"_utf16_fly_string;
    auto native_will_validate_getter = JS::NativeFunction::create(realm, will_validate_getter, 0, will_validate_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_will_validate_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto will_validate_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(will_validate_id, native_will_validate_getter, native_will_validate_setter, will_validate_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto validity_id = "validity"_utf16_fly_string;
    auto native_validity_getter = JS::NativeFunction::create(realm, validity_getter, 0, validity_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_validity_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto validity_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(validity_id, native_validity_getter, native_validity_setter, validity_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto validation_message_id = "validationMessage"_utf16_fly_string;
    auto native_validation_message_getter = JS::NativeFunction::create(realm, validation_message_getter, 0, validation_message_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_validation_message_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto validation_message_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(validation_message_id, native_validation_message_getter, native_validation_message_setter, validation_message_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    auto labels_id = "labels"_utf16_fly_string;
    auto native_labels_getter = JS::NativeFunction::create(realm, labels_getter, 0, labels_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_labels_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto labels_attributes = default_attributes;

    // 5. Let desc be the PropertyDescriptor{[[Get]]: getter, [[Set]]: setter, [[Enumerable]]: true, [[Configurable]]: configurable}.

    // 7. Perform ! DefinePropertyOrThrow(target, id, desc).
    object.define_direct_accessor(labels_id, native_labels_getter, native_labels_setter, labels_attributes);

    // 8. FIXME: If attr’s type is an observable array type with type argument T, then set target’s backing observable array exotic object for attr to the result of creating an observable array exotic object in realm, given T, attr’s set an indexed value algorithm, and attr’s delete an indexed value algorithm.
    object.define_native_function(realm, "checkValidity"_utf16_fly_string, check_validity, 0, default_attributes);

    object.define_native_function(realm, "reportValidity"_utf16_fly_string, report_validity, 0, default_attributes);

    object.define_native_function(realm, "setCustomValidity"_utf16_fly_string, set_custom_validity, 1, default_attributes);

    object.define_direct_property(vm.well_known_symbol_to_string_tag(), JS::PrimitiveString::create(vm, "HTMLOutputElement"_utf16), JS::Attribute::Configurable);
}

void HTMLOutputElementPrototype::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::HTMLOutputElement*> impl_from(JS::VM& vm, JS::Value js_value)
{

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

[[maybe_unused]] static JS::ThrowCompletionOr<HTML::HTMLOutputElement*> 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(HTMLOutputElementPrototype::html_for_getter)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::html_for_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->html_for(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::form_getter)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::form_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->form(); }));

    return [&]() -> JS::Value {
        // 1. If the IDL nullable type T? value is null, then the JavaScript value is null.
        if (!R)
            return JS::js_null();

        // 2. Otherwise, the JavaScript value is the result of converting the IDL nullable type value to the inner IDL type T.
        return JS::Value(JS::Value(R));
    }();
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::name_getter)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::name_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    // If a reflected IDL attribute has the type DOMString:
    // 1. Let element be the result of running this's get the element.
    // 2. Let contentAttributeValue be the result of running this's get the content attribute.
    // 5. If contentAttributeValue is null, then return the empty string.
    // 6. Return contentAttributeValue.
    auto R = idl_object->get_attribute_value("name"_utf16_fly_string);

    return WebIDL::primitive_string_from_string(vm, R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::type_getter)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::type_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->type(); }));

    return WebIDL::primitive_string_from_string(vm, R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::default_value_getter)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::default_value_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->default_value(); }));

    return WebIDL::primitive_string_from_string(vm, R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::value_getter)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::value_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->value(); }));

    return WebIDL::primitive_string_from_string(vm, R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::will_validate_getter)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::will_validate_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->will_validate(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::validity_getter)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::validity_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->validity(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::validation_message_getter)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::validation_message_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->validation_message(); }));

    return WebIDL::primitive_string_from_string(vm, R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::labels_getter)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::labels_getter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    auto* idl_object = TRY(impl_from(vm));


    auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->labels(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::html_for_setter)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::html_for_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLOutputElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    // 8. If attribute is declared with a [PutForwards] extended attribute, then:

    // 1. Let Q be ? Get(jsValue, id).
    auto receiver_value = TRY(idl_object->get("htmlFor"_utf16_fly_string));

    // 2. If Q is not an Object, then throw a TypeError.
    if (!receiver_value.is_object())
        return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObject, receiver_value);
    auto& receiver = receiver_value.as_object();

    // 3. Let forwardId be the identifier argument of the [PutForwards] extended attribute.
    auto forward_id = "value"_utf16_fly_string;

    // 4. Perform ? Set(Q, forwardId, V, false).
    TRY(receiver.set(JS::PropertyKey { forward_id, JS::PropertyKey::StringMayBeNumber::No }, V, JS::Object::ShouldThrowExceptions::No));

    // 5. Return undefined.
    return JS::js_undefined();
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::name_setter)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::name_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLOutputElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<Utf16String> {
        return TRY(WebIDL::to_utf16_string(vm, V));
    }(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            idl_object->set_attribute_value("name"_utf16_fly_string, attribute_value_to_utf16(idl_value));
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY([&]() -> decltype(original_steps()) {
        // For [CEReactions]: https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions

        // 1. Push a new element queue onto this object's relevant agent's custom element reactions stack.
        auto& reactions_stack = HTML::relevant_similar_origin_window_agent(*idl_object).custom_element_reactions_stack;
        reactions_stack.element_queue_stack.append({});

        // 2. Run the originally-specified steps for this construct, catching any exceptions. If the steps return a value, let value be the returned value. If they throw an exception, let exception be the thrown exception.
        auto value_or_exception = original_steps();

        // 3. Let queue be the result of popping from this object's relevant agent's custom element reactions stack.
        // 4. Invoke custom element reactions in queue.
        auto queue = reactions_stack.element_queue_stack.take_last();
        Bindings::invoke_custom_element_reactions(queue);

        // 5. If an exception exception was thrown by the original steps, rethrow exception.
        if (value_or_exception.is_error())
            return value_or_exception.release_error();

        // 6. If a value value was returned from the original steps, return value.
        return value_or_exception.release_value();
    }());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::default_value_setter)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::default_value_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLOutputElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<Utf16String> {
        return TRY(WebIDL::to_utf16_string(vm, V));
    }(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->set_default_value(idl_value); }));
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY([&]() -> decltype(original_steps()) {
        // For [CEReactions]: https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions

        // 1. Push a new element queue onto this object's relevant agent's custom element reactions stack.
        auto& reactions_stack = HTML::relevant_similar_origin_window_agent(*idl_object).custom_element_reactions_stack;
        reactions_stack.element_queue_stack.append({});

        // 2. Run the originally-specified steps for this construct, catching any exceptions. If the steps return a value, let value be the returned value. If they throw an exception, let exception be the thrown exception.
        auto value_or_exception = original_steps();

        // 3. Let queue be the result of popping from this object's relevant agent's custom element reactions stack.
        // 4. Invoke custom element reactions in queue.
        auto queue = reactions_stack.element_queue_stack.take_last();
        Bindings::invoke_custom_element_reactions(queue);

        // 5. If an exception exception was thrown by the original steps, rethrow exception.
        if (value_or_exception.is_error())
            return value_or_exception.release_error();

        // 6. If a value value was returned from the original steps, return value.
        return value_or_exception.release_value();
    }());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::value_setter)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::value_setter");
    [[maybe_unused]] auto& realm = *vm.current_realm();

    // 1. Let V be undefined.
    auto V = JS::js_undefined();

    // 2. If any arguments were passed, then set V to the value of the first argument passed.
    if (vm.argument_count() > 0)
        V = vm.argument(0);

    // 3. Let id be attribute’s identifier.

    // 4. Let idlObject be null.
    [[maybe_unused]] HTML::HTMLOutputElement* idl_object = nullptr;

    // 5. If attribute is a regular attribute:

    // 1. Let jsValue be the this value, if it is not null or undefined, or realm’s global object otherwise. (This will subsequently cause a TypeError in a few steps, if the global object does not implement target and [LegacyLenientThis] is not specified.)
    auto js_value = vm.this_value();
    if (js_value.is_nullish())
        js_value = &realm.global_object();

    // 2. FIXME: If jsValue is a platform object, then perform a security check, passing jsValue, attribute’s identifier, and "setter".

    // 3. Let validThis be true if jsValue implements target, or false otherwise.
    auto maybe_idl_object = impl_from(vm, js_value);

    // 4. If validThis is false and attribute was not specified with the [LegacyLenientThis] extended attribute, then throw a TypeError.
    idl_object = TRY(maybe_idl_object);

    auto original_steps = [&]() -> JS::ThrowCompletionOr<JS::Value> {
        // 6. Let idlValue be determined as follows:
        // -> Otherwise, idlValue is the result of converting V to an IDL value of attribute’s type.
        auto idl_value = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<Utf16String> {
        return TRY(WebIDL::to_utf16_string(vm, V));
    }(); }));

        // 7. Run the setter steps of attribute with idlObject as this and idlValue as the value.
        auto setter_result = [&]() -> JS::ThrowCompletionOr<void> {
            TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->set_value(idl_value); }));
    return {};
        }();

        if (setter_result.is_error())
            return setter_result.release_error();

        return JS::js_undefined();
    };

    // 8. Return undefined.
    return TRY([&]() -> decltype(original_steps()) {
        // For [CEReactions]: https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions

        // 1. Push a new element queue onto this object's relevant agent's custom element reactions stack.
        auto& reactions_stack = HTML::relevant_similar_origin_window_agent(*idl_object).custom_element_reactions_stack;
        reactions_stack.element_queue_stack.append({});

        // 2. Run the originally-specified steps for this construct, catching any exceptions. If the steps return a value, let value be the returned value. If they throw an exception, let exception be the thrown exception.
        auto value_or_exception = original_steps();

        // 3. Let queue be the result of popping from this object's relevant agent's custom element reactions stack.
        // 4. Invoke custom element reactions in queue.
        auto queue = reactions_stack.element_queue_stack.take_last();
        Bindings::invoke_custom_element_reactions(queue);

        // 5. If an exception exception was thrown by the original steps, rethrow exception.
        if (value_or_exception.is_error())
            return value_or_exception.release_error();

        // 6. If a value value was returned from the original steps, return value.
        return value_or_exception.release_value();
    }());
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::check_validity)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::check_validity");
    [[maybe_unused]] auto& realm = *vm.current_realm();
    [[maybe_unused]] HTML::HTMLOutputElement* idl_object = TRY(impl_from(vm));

    [[maybe_unused]] auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->check_validity(); }));
    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::report_validity)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::report_validity");
    [[maybe_unused]] auto& realm = *vm.current_realm();
    [[maybe_unused]] HTML::HTMLOutputElement* idl_object = TRY(impl_from(vm));

    [[maybe_unused]] auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->report_validity(); }));
    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(HTMLOutputElementPrototype::set_custom_validity)
{
    WebIDL::log_trace(vm, "HTMLOutputElementPrototype::set_custom_validity");
    [[maybe_unused]] auto& realm = *vm.current_realm();
    [[maybe_unused]] HTML::HTMLOutputElement* idl_object = TRY(impl_from(vm));

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

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

    [[maybe_unused]] auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return idl_object->set_custom_validity(error); }));
    return JS::js_undefined();
}

} // namespace Web::Bindings