/*
 * Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Temporal/Calendar.h>
#include <LibJS/Runtime/Temporal/Instant.h>
#include <LibJS/Runtime/Temporal/TimeZone.h>
#include <LibJS/Runtime/Temporal/ZonedDateTime.h>
#include <LibJS/Runtime/Temporal/ZonedDateTimeConstructor.h>

namespace JS::Temporal {

// 6.1 The Temporal.ZonedDateTime Constructor, https://tc39.es/proposal-temporal/#sec-temporal-zoneddatetime-constructor
ZonedDateTimeConstructor::ZonedDateTimeConstructor(GlobalObject& global_object)
    : NativeFunction(vm().names.ZonedDateTime.as_string(), *global_object.function_prototype())
{
}

void ZonedDateTimeConstructor::initialize(GlobalObject& global_object)
{
    NativeFunction::initialize(global_object);

    auto& vm = this->vm();

    // 6.2.1 Temporal.ZonedDateTime.prototype, https://tc39.es/proposal-temporal/#sec-temporal-zoneddatetime-prototype
    define_direct_property(vm.names.prototype, global_object.temporal_zoned_date_time_prototype(), 0);

    define_direct_property(vm.names.length, Value(2), Attribute::Configurable);
}

// 6.1.1 Temporal.ZonedDateTime ( epochNanoseconds, timeZoneLike [ , calendarLike ] ), https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime
Value ZonedDateTimeConstructor::call()
{
    auto& vm = this->vm();

    // 1. If NewTarget is undefined, then
    // a. Throw a TypeError exception.
    vm.throw_exception<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, "Temporal.ZonedDateTime");
    return {};
}

// 6.1.1 Temporal.ZonedDateTime ( epochNanoseconds, timeZoneLike [ , calendarLike ] ), https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime
Value ZonedDateTimeConstructor::construct(FunctionObject& new_target)
{
    auto& vm = this->vm();
    auto& global_object = this->global_object();

    // 2. Set epochNanoseconds to ? ToBigInt(epochNanoseconds).
    auto* epoch_nanoseconds = vm.argument(0).to_bigint(global_object);
    if (vm.exception())
        return {};

    // 3. If ! IsValidEpochNanoseconds(epochNanoseconds) is false, throw a RangeError exception.
    if (!is_valid_epoch_nanoseconds(*epoch_nanoseconds)) {
        vm.throw_exception<RangeError>(global_object, ErrorType::TemporalInvalidEpochNanoseconds);
        return {};
    }

    // 4. Let timeZone be ? ToTemporalTimeZone(timeZoneLike).
    auto* time_zone = to_temporal_time_zone(global_object, vm.argument(1));
    if (vm.exception())
        return {};

    // 5. Let calendar be ? ToTemporalCalendarWithISODefault(calendarLike).
    auto* calendar = to_temporal_calendar_with_iso_default(global_object, vm.argument(2));
    if (vm.exception())
        return {};

    // 6. Return ? CreateTemporalZonedDateTime(epochNanoseconds, timeZone, calendar, NewTarget).
    return create_temporal_zoned_date_time(global_object, *epoch_nanoseconds, *time_zone, *calendar, &new_target);
}

}