using XCEngine;
using XCEngine.Rendering;

namespace XCEngine.Rendering.Universal
{
    public sealed class RendererPassQueueData
    {
        internal RendererPassQueueData(
            int rendererIndex,
            ulong framePlanId,
            CameraData cameraData,
            LightingData lightingData,
            ShadowData shadowData,
            EnvironmentData environmentData,
            FinalColorData finalColorData)
        {
            this.rendererIndex = rendererIndex;
            this.framePlanId = framePlanId;
            this.cameraData = cameraData ?? CameraData.Default;
            this.lightingData = lightingData ?? LightingData.Default;
            this.shadowData = shadowData ?? ShadowData.Default;
            this.environmentData =
                environmentData ?? EnvironmentData.Default;
            this.finalColorData =
                finalColorData ?? FinalColorData.Default;
        }

        internal static RendererPassQueueData CreatePlanning(
            int rendererIndex,
            bool finalColorRequiresProcessing,
            ulong framePlanId)
        {
            return new RendererPassQueueData(
                rendererIndex,
                framePlanId,
                CameraData.Default,
                LightingData.Default,
                ShadowData.Default,
                EnvironmentData.Default,
                finalColorRequiresProcessing
                    ? new FinalColorData(
                        CreatePlanningFinalColorSettings(),
                        true,
                        false)
                    : FinalColorData.Default);
        }

        internal static RendererPassQueueData FromRenderingData(
            RenderingData renderingData)
        {
            if (renderingData == null)
            {
                return CreatePlanning(-1, false, 0UL);
            }

            return new RendererPassQueueData(
                renderingData.rendererIndex,
                renderingData.framePlanId,
                renderingData.cameraData,
                renderingData.lightingData,
                renderingData.shadowData,
                renderingData.environmentData,
                renderingData.finalColorData);
        }

        public int rendererIndex { get; }

        public ulong framePlanId { get; }

        public CameraData cameraData { get; }

        public LightingData lightingData { get; }

        public ShadowData shadowData { get; }

        public EnvironmentData environmentData { get; }

        public FinalColorData finalColorData { get; }

        private static FinalColorSettings
            CreatePlanningFinalColorSettings()
        {
            FinalColorSettings settings =
                FinalColorSettings.CreateDefault();
            settings.finalColorScale =
                new Vector4(
                    0.5f,
                    0.5f,
                    0.5f,
                    1.0f);
            return settings;
        }
    }
}