#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/Value.h>
#include <LibJS/Runtime/ValueInlines.h>
#include <LibWeb/Bindings/CSSNamespaceRule.h>
#include <LibWeb/Bindings/CSSRule.h>
#include <LibWeb/Bindings/ExceptionOrUtils.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/CSS/CSSNamespaceRule.h>
#include <LibWeb/WebIDL/AbstractOperations.h>
#include <LibWeb/WebIDL/Tracing.h>

namespace Web::Bindings {

void CSSNamespaceRuleConstructor::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<CSSRulePrototype>(realm, "CSSRule"_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, "CSSNamespaceRule"_utf16), JS::Attribute::Configurable);
    object.define_direct_property(vm.names.prototype, &ensure_web_prototype<CSSNamespaceRulePrototype>(realm, "CSSNamespaceRule"_fly_string), 0);
}

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

void CSSNamespaceRulePrototype::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<CSSRulePrototype>(realm, "CSSRule"_fly_string) });

    auto namespace_uri_id = "namespaceURI"_utf16_fly_string;
    auto native_namespace_uri_getter = JS::NativeFunction::create(realm, namespace_uri_getter, 0, namespace_uri_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_namespace_uri_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto namespace_uri_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(namespace_uri_id, native_namespace_uri_getter, native_namespace_uri_setter, namespace_uri_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 prefix_id = "prefix"_utf16_fly_string;
    auto native_prefix_getter = JS::NativeFunction::create(realm, prefix_getter, 0, prefix_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_prefix_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto prefix_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(prefix_id, native_prefix_getter, native_prefix_setter, prefix_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_direct_property(vm.well_known_symbol_to_string_tag(), JS::PrimitiveString::create(vm, "CSSNamespaceRule"_utf16), JS::Attribute::Configurable);
}

void CSSNamespaceRulePrototype::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<CSS::CSSNamespaceRule*> impl_from(JS::VM& vm, JS::Value js_value)
{

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

[[maybe_unused]] static JS::ThrowCompletionOr<CSS::CSSNamespaceRule*> 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(CSSNamespaceRulePrototype::namespace_uri_getter)
{
    WebIDL::log_trace(vm, "CSSNamespaceRulePrototype::namespace_uri_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->namespace_uri(); }));

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

JS_DEFINE_NATIVE_FUNCTION(CSSNamespaceRulePrototype::prefix_getter)
{
    WebIDL::log_trace(vm, "CSSNamespaceRulePrototype::prefix_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->prefix(); }));

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

} // namespace Web::Bindings