/*
 * Copyright (C) 2022 Apple Inc. All rights reserved.
 * Copyright (C) 2024-2026 Samuel Weinig <sam@webkit.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#pragma once

#include <WebCore/CSSRayFunction.h>
#include <WebCore/StylePosition.h>
#include <WebCore/StylePrimitiveNumericTypes.h>

namespace WebCore {

class Path;
struct AcceleratedEffectRayFunction;
struct TransformOperationData;

namespace Style {

using RaySize = CSS::RaySize;

// ray() = ray( <angle> && <ray-size>? && contain? && [at <position>]? )
// <ray-size> = closest-side | closest-corner | farthest-side | farthest-corner | sides
// https://drafts.fxtf.org/motion-1/#ray-function
struct Ray {
    Angle<> angle;
    RaySize size;
    std::optional<CSS::Keyword::Contain> contain;
    std::optional<Position> position;

    bool operator==(const Ray&) const = default;
};
using RayFunction = FunctionNotation<CSSValueRay, Ray>;

template<size_t I> const auto& get(const Ray& value)
{
    if constexpr (!I)
        return value.angle;
    else if constexpr (I == 1)
        return value.size;
    else if constexpr (I == 2)
        return value.contain;
    else if constexpr (I == 3)
        return value.position;
}

DEFINE_TYPE_MAPPING(CSS::Ray, Ray)

// MARK: Serialization

template<> struct Serialize<Ray> { void operator()(StringBuilder&, const CSS::SerializationContext&, const Style::ComputedStyle&, const Ray&); };

// MARK: - Path

std::optional<WebCore::Path> tryPath(const Ray&, const TransformOperationData&, ZoomFactor);

// MARK: - Evaluation

#if ENABLE(THREADED_ANIMATIONS)

template<> struct Evaluation<RayFunction, AcceleratedEffectRayFunction> { AcceleratedEffectRayFunction operator()(const RayFunction&, const TransformOperationData&, ZoomFactor); };

#endif

} // namespace Style
} // namespace WebCore

DEFINE_TUPLE_LIKE_CONFORMANCE(WebCore::Style::Ray, 4)
