#include <AK/String.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/Value.h>
#include <LibJS/Runtime/ValueInlines.h>
#include <LibWeb/Bindings/CanvasGradient.h>
#include <LibWeb/Bindings/ExceptionOrUtils.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/HTML/CanvasGradient.h>
#include <LibWeb/WebIDL/AbstractOperations.h>
#include <LibWeb/WebIDL/Tracing.h>

namespace Web::Bindings {

void CanvasGradientConstructor::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, "CanvasGradient"_utf16), JS::Attribute::Configurable);
    object.define_direct_property(vm.names.prototype, &ensure_web_prototype<CanvasGradientPrototype>(realm, "CanvasGradient"_fly_string), 0);
}

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

void CanvasGradientPrototype::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());
    object.define_native_function(realm, "addColorStop"_utf16_fly_string, add_color_stop, 2, default_attributes);

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

void CanvasGradientPrototype::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::CanvasGradient*> impl_from(JS::VM& vm, JS::Value js_value)
{

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

[[maybe_unused]] static JS::ThrowCompletionOr<HTML::CanvasGradient*> 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(CanvasGradientPrototype::add_color_stop)
{
    WebIDL::log_trace(vm, "CanvasGradientPrototype::add_color_stop");
    [[maybe_unused]] auto& realm = *vm.current_realm();
    [[maybe_unused]] HTML::CanvasGradient* idl_object = TRY(impl_from(vm));

    if (vm.argument_count() < 2)
        return vm.throw_completion<JS::TypeError>(JS::ErrorType::BadArgCountMany, "addColorStop", "2");

    auto arg0 = vm.argument(0);
    auto offset = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<double> {
        auto x = TRY(arg0.to_double(vm));
        if (isinf(x) || isnan(x))
            return vm.throw_completion<JS::TypeError>(JS::ErrorType::InvalidRestrictedFloatingPointParameter, "offset");
        return x;
    }(); }));

    auto arg1 = vm.argument(1);
    auto color = TRY(throw_dom_exception_if_needed(vm, [&] { return [&]() -> JS::ThrowCompletionOr<String> {
        return TRY(WebIDL::to_string(vm, arg1));
    }(); }));

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

} // namespace Web::Bindings