// Copyright 2018 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#ifndef BACKEND_VULKAN_NATIVESWAPCHAINIMPLVK_H_
#define BACKEND_VULKAN_NATIVESWAPCHAINIMPLVK_H_

#include "backend/vulkan/VulkanInfo.h"

#include "dawn/dawn_wsi.h"
#include "dawn/dawncpp.h"

namespace backend { namespace vulkan {

    class Device;

    class NativeSwapChainImpl {
      public:
        using WSIContext = dawnWSIContextVulkan;

        NativeSwapChainImpl(Device* device, VkSurfaceKHR surface);
        ~NativeSwapChainImpl();

        void Init(dawnWSIContextVulkan* context);
        dawnSwapChainError Configure(dawnTextureFormat format,
                                     dawnTextureUsageBit,
                                     uint32_t width,
                                     uint32_t height);
        dawnSwapChainError GetNextTexture(dawnSwapChainNextTexture* nextTexture);
        dawnSwapChainError Present();

        dawn::TextureFormat GetPreferredFormat() const;

        struct ChosenConfig {
            VkFormat nativeFormat;
            dawn::TextureFormat format;
            VkColorSpaceKHR colorSpace;
            VkSurfaceTransformFlagBitsKHR preTransform;
            uint32_t minImageCount;
            VkPresentModeKHR presentMode;
            VkCompositeAlphaFlagBitsKHR compositeAlpha;
        };

      private:
        VkSurfaceKHR mSurface = VK_NULL_HANDLE;
        VkSwapchainKHR mSwapChain = VK_NULL_HANDLE;
        std::vector<VkImage> mSwapChainImages;
        uint32_t mLastImageIndex = 0;

        VulkanSurfaceInfo mInfo;

        ChosenConfig mConfig;

        Device* mDevice = nullptr;
    };

}}  // namespace backend::vulkan

#endif  // BACKEND_VULKAN_NATIVESWAPCHAINIMPLVK_H_