using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using UnityEngine;

namespace X.Rendering.Feature
{
    public static class RenderingPlugin
    {
#if (PLATFORM_IOS || PLATFORM_TVOS || PLATFORM_BRATWURST || UNITY_STANDALONE_OSX ) && !UNITY_EDITOR
        [DllImport("__Internal")]
#else
        [DllImport("GfxPluginNativeRender")]
#endif
        public static extern void SetTimeFromUnity(float t);

#if (PLATFORM_IOS || PLATFORM_TVOS || PLATFORM_BRATWURST || UNITY_STANDALONE_OSX ) && !UNITY_EDITOR
        [DllImport("__Internal")]
#else
        [DllImport("GfxPluginNativeRender")]
#endif
        public static extern IntPtr GetRenderEventAndDataFunc();

#if (PLATFORM_IOS || PLATFORM_TVOS || PLATFORM_BRATWURST || UNITY_STANDALONE_OSX ) && !UNITY_EDITOR
        [DllImport("__Internal")]
#else
        [DllImport("GfxPluginNativeRender")]
#endif
        private static extern bool GetFeatureSupport(int feature);

#if (PLATFORM_IOS || PLATFORM_TVOS || PLATFORM_BRATWURST || UNITY_STANDALONE_OSX ) && !UNITY_EDITOR
        [DllImport("__Internal")]
#else
        [DllImport("GfxPluginNativeRender")]
#endif
        public static extern bool GetInputResolution(int outw, int outh, int quality, ref int width, ref int height);

        //#if (PLATFORM_IOS || PLATFORM_TVOS || PLATFORM_BRATWURST || UNITY_STANDALONE_OSX) && !UNITY_EDITOR
        //        [DllImport("__Internal")]
        //#else
        //        [DllImport("GfxPluginNativeRender")]
        //#endif
        //        public static extern bool DoFGExtrapolation(IntPtr src, IntPtr data, IntPtr dst);

        public enum NativeRenderingEvent
        {
            EnableVRS = 1,
            DisableVRS,
            EnableFGExtrapolation,
            PreFGExtrapolation,
            DoFGExtrapolation,
            PostFGExtrapolation,
            DisableFGExtrapolation,
            SpatialUpScale,
            EnableXESS1,
            DoXESS1,
            UpdateXESS1Config,
            DisableXESS1,
        };

        public enum VRSPluginShadingRate
        {
            X1_PER_PIXEL,
            X1_PER_2X1_PIXELS,
            X1_PER_1X2_PIXELS,
            X1_PER_2X2_PIXELS,
            X1_PER_4X2_PIXELS,
            X1_PER_2X4_PIXELS,
            X1_PER_4X4_PIXELS,
        };

        public enum GraphicsFeature
        {
            VRS_DRAW = 0,
            VRS_PRIMITIVE,
            VRS_ATTACHMENT,
            HW_SPATIAL_SR,
            METAL_VRR,
            HW_AISR,
            HW_ADAPTIVE_VRS,
            HW_FG_INTERPOLATE,
            HW_FG_EXTRAPOLATION,
            METAL_FX_SPATIAL_SR,
            METAL_FX_TEMPORAL_SR,
            VIVO_TEMPORAL_SR,
            QCOM_AFME,
            XESS13,
            MAX_CNT
        };

        static Dictionary<GraphicsFeature, bool> featureSupports = null;

        public static void InitSupportFeatures()
        {
            featureSupports = new();
            UnityEngine.Debug.Log(SystemInfo.graphicsDeviceType);
            for (int i = 0; i < (int)GraphicsFeature.MAX_CNT; ++i)
            {
                featureSupports[(GraphicsFeature)i] = GetFeatureSupport(i);
                UnityEngine.Debug.Log($"feature->{(GraphicsFeature)i}:{featureSupports[(GraphicsFeature)i]}");
            }
        }

        public static bool GetFeatureSupport(GraphicsFeature feature)
        {
            if (featureSupports != null)
            {
                return featureSupports[feature];
            }

            return GetFeatureSupport((int)feature);
        }
    }
}