#include <LibJS/Runtime/AbstractOperations.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/Realm.h>
#include <LibJS/Runtime/Value.h>
#include <LibJS/Runtime/ValueInlines.h>
#include <LibWeb/Bindings/ExceptionOrUtils.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Bindings/Origin.h>
#include <LibWeb/DOMURL/Origin.h>
#include <LibWeb/WebIDL/Tracing.h>

namespace Web::Bindings {

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

    
    object.define_direct_property(vm.names.length, JS::Value(0), JS::Attribute::Configurable);
    object.define_direct_property(vm.names.name, JS::PrimitiveString::create(vm, "Origin"_utf16), JS::Attribute::Configurable);
    object.define_direct_property(vm.names.prototype, &ensure_web_prototype<OriginPrototype>(realm, "Origin"_fly_string), 0);
    object.define_native_function(realm, "from"_utf16_fly_string, from, 1, JS::Attribute::Enumerable | JS::Attribute::Configurable | JS::Attribute::Writable);

}

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

    // To internally create a new object implementing the interface Origin:

    // 3.2. Let prototype be ? Get(newTarget, "prototype").
    auto prototype = TRY(new_target.get(vm.names.prototype));

    // 3.3. If Type(prototype) is not Object, then:
    if (!prototype.is_object()) {
        // 1. Let targetRealm be ? GetFunctionRealm(newTarget).
        auto* target_realm = TRY(JS::get_function_realm(vm, new_target));

        // 2. Set prototype to the interface prototype object for interface in targetRealm.
        VERIFY(target_realm);
        prototype = &Bindings::ensure_web_prototype<OriginPrototype>(*target_realm, "Origin"_fly_string);
    }

    auto impl = TRY(throw_dom_exception_if_needed(vm, [&] { return DOMURL::Origin::construct_impl(realm); }));

    // 7. Set instance.[[Prototype]] to prototype.
    VERIFY(prototype.is_object());
    impl->set_prototype(&prototype.as_object());

    // FIXME: Steps 8...11. of the "internally create a new object implementing the interface Origin" algorithm
    // (https://webidl.spec.whatwg.org/#js-platform-objects) are currently not handled, or are handled within DOMURL::Origin::construct_impl().

    return *impl;
}

void OriginPrototype::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(realm.intrinsics().object_prototype());

    auto opaque_id = "opaque"_utf16_fly_string;
    auto native_opaque_getter = JS::NativeFunction::create(realm, opaque_getter, 0, opaque_id, &realm, "get"sv);
    GC::Ptr<JS::NativeFunction> native_opaque_setter;

    // 4. Let configurable be false if attr is unforgeable and true otherwise.
    auto opaque_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(opaque_id, native_opaque_getter, native_opaque_setter, opaque_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, "isSameOrigin"_utf16_fly_string, is_same_origin, 1, default_attributes);

    object.define_native_function(realm, "isSameSite"_utf16_fly_string, is_same_site, 1, default_attributes);

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

void OriginPrototype::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<DOMURL::Origin*> impl_from(JS::VM& vm, JS::Value js_value)
{

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

[[maybe_unused]] static JS::ThrowCompletionOr<DOMURL::Origin*> 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(OriginConstructor::from)
{
    WebIDL::log_trace(vm, "OriginConstructor::from");
    [[maybe_unused]] auto& realm = *vm.current_realm();
    if (vm.argument_count() < 1)
        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountOne, "from");

    auto arg0 = vm.argument(0);
    auto value = TRY(throw_dom_exception_if_needed(vm, [&] { return arg0; }));

    [[maybe_unused]] auto R = TRY(throw_dom_exception_if_needed(vm, [&] { return DOMURL::Origin::from(vm, value); }));
    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(OriginPrototype::opaque_getter)
{
    WebIDL::log_trace(vm, "OriginPrototype::opaque_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->opaque(); }));

    return JS::Value(R);
}

JS_DEFINE_NATIVE_FUNCTION(OriginPrototype::is_same_origin)
{
    WebIDL::log_trace(vm, "OriginPrototype::is_same_origin");
    [[maybe_unused]] auto& realm = *vm.current_realm();
    [[maybe_unused]] DOMURL::Origin* idl_object = TRY(impl_from(vm));

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

    auto arg0 = vm.argument(0);
    auto other = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<GC::Ref<DOMURL::Origin>> {
        if (auto impl = arg0.as_if<DOMURL::Origin>())
            return *impl;
        return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "Origin");
    }(); }));

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

JS_DEFINE_NATIVE_FUNCTION(OriginPrototype::is_same_site)
{
    WebIDL::log_trace(vm, "OriginPrototype::is_same_site");
    [[maybe_unused]] auto& realm = *vm.current_realm();
    [[maybe_unused]] DOMURL::Origin* idl_object = TRY(impl_from(vm));

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

    auto arg0 = vm.argument(0);
    auto other = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<GC::Ref<DOMURL::Origin>> {
        if (auto impl = arg0.as_if<DOMURL::Origin>())
            return *impl;
        return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "Origin");
    }(); }));

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

} // namespace Web::Bindings