using System;
using System.IO;
using UnityEditor;
using UnityEngine;

namespace Misaki.HdrpToon
{
    internal enum BufferQuality
    {
        Low,
        High
    }

    [Serializable]
    internal struct UtsHairShadowSetting
    {
        public bool enable;
        public BufferQuality quality;
    }

    [Serializable]
    internal struct UtsHairBlendingSetting
    {
        public bool enable;
        public BufferQuality quality;
    }

    [Serializable]
    internal struct UTSOutlineSetting
    {
        public bool enable;
    }

    [CreateAssetMenu(fileName = "UTSRenderSetting", menuName = "UTS/RenderSetting")]
    public class UTSRenderPassSettings : ScriptableObject
    {
        public const string UTS_RENDERING_SETTINGS_NAME = "UTSRenderingSettings";
        public const string UTS_RENDERING_SETTINGS_PATH = "Assets/Resources/Settings/UTSRenderSettings.asset";
        public const string UTS_RENDERING_SETTINGS_RESOURCES_PATH = "Settings/UTSRenderSettings";

        [SerializeField]
        internal UtsHairShadowSetting hairShadowSetting;
        [SerializeField]
        internal UtsHairBlendingSetting hairBlendingSetting;
        [SerializeField]
        internal UTSOutlineSetting outlineSetting;

        internal static UTSRenderPassSettings GetOrCreateSettings()
        {
#if UNITY_EDITOR
            if (EditorBuildSettings.TryGetConfigObject<UTSRenderPassSettings>(UTS_RENDERING_SETTINGS_NAME, out var settings))
            {
                return settings;
            }

            UTSRenderPassSettings renderingSettings = null;
            if (File.Exists(UTS_RENDERING_SETTINGS_PATH))
            {
                renderingSettings = AssetDatabase.LoadAssetAtPath<UTSRenderPassSettings>(UTS_RENDERING_SETTINGS_PATH);
            }
            else
            {
                var directory = Path.GetDirectoryName(UTS_RENDERING_SETTINGS_PATH);
                if (!Directory.Exists(directory))
                {
                    Directory.CreateDirectory(directory);
                }

                renderingSettings = CreateInstance<UTSRenderPassSettings>();
                AssetDatabase.CreateAsset(renderingSettings, UTS_RENDERING_SETTINGS_PATH);
                AssetDatabase.Refresh();
            }

            EditorBuildSettings.AddConfigObject(UTS_RENDERING_SETTINGS_NAME, renderingSettings, true);

            return renderingSettings;
#else
            return Resources.Load<UTSRenderPassSettings>(UTS_RENDERING_SETTINGS_RESOURCES_PATH);
#endif
        }

#if UNITY_EDITOR
        public static SerializedObject GetSerializedSettings()
        {
            return new(GetOrCreateSettings());
        }
#endif
    }
}