using System;
using Sirenix.OdinInspector;
using UnityEngine;
using UnityEngine.UI;

namespace AlicizaX.UI.Extension
{
    [RequireComponent(typeof(RawImage))]
    public class UI3DDisplay : MonoBehaviour
    {
        private Camera m_Camera;
        private GameObject m_ShowObject;
        private RenderTexture m_ShowTexure;
        private UI3DDisplayTouch m_UI3DDisplayTouch;

        private RawImage m_ShowImage;

        [ReadOnly]
        [SerializeField]
        private int m_ResolutionX = 512;

        [SerializeField]
        [ReadOnly]
        private int m_ResolutionY = 512;

        private readonly int m_RenderTextureDepthBuffer = 16;

        void Awake()
        {
            m_ShowImage = GetComponent<RawImage>();
            m_UI3DDisplayTouch = GetComponentInChildren<UI3DDisplayTouch>();
        }


#if UNITY_EDITOR


        [SerializeField] [Header("分辨率")] [OnValueChanged("OnEditResolutionChanged")]
        private int EditResolution = 512;

        private void OnEditResolutionChanged()
        {
            if (!getPlayingState) return;
            m_ResolutionX = EditResolution;
            m_ResolutionY = EditResolution;
            var rect = transform.GetComponent<RectTransform>();
            if (Math.Abs(rect.sizeDelta.x - m_ResolutionX) > 0.01f ||
                Math.Abs(rect.sizeDelta.y - m_ResolutionY) > 0.01f)
                rect.sizeDelta = new Vector2(m_ResolutionX, m_ResolutionY);
        }


        [ShowIf("getPlayingState")] [SerializeField]
        GameObject previewPrefab;

        [ShowIf("getPlayingState")] [SerializeField]
        Camera previewCamera;

        bool getPlayingState => !Application.isPlaying;

        [Sirenix.OdinInspector.Button("预览")]
        private void Preview()
        {
            if (m_ShowObject != null)
            {
                UnityEngine.Object.DestroyImmediate(m_ShowObject);
            }

            m_ShowObject = UnityEngine.Object.Instantiate(previewPrefab);
            m_Camera = previewCamera;
            if (m_ShowTexure != null)
            {
                RenderTexture.ReleaseTemporary(m_ShowTexure);
            }

            m_ShowTexure = RenderTexture.GetTemporary(m_ResolutionX, m_ResolutionY, m_RenderTextureDepthBuffer);
            // m_ShowObject.SetLayerRecursively(LayerDefine.UI3DObject);
            m_Camera.targetTexture = m_ShowTexure;
            GetComponent<RawImage>().texture = m_ShowTexure;
        }
#endif

        public void SetUp(GameObject obj)
        {
            m_ShowObject = obj;
            // m_Camera = CameraManaer.Instance.UI3DRenderCamera;
            if (m_ShowTexure != null)
            {
                RenderTexture.ReleaseTemporary(m_ShowTexure);
            }

            m_ShowTexure = RenderTexture.GetTemporary(m_ResolutionX, m_ResolutionY, m_RenderTextureDepthBuffer);
            // m_ShowObject.SetLayerRecursively(LayerDefine.UI3DObject);
            m_Camera.targetTexture = m_ShowTexure;
            m_ShowImage.texture = m_ShowTexure;
            m_UI3DDisplayTouch.SetObject(m_ShowObject);
        }

        void OnDestroy()
        {
            m_UI3DDisplayTouch.Disopose();
            if (m_ShowTexure != null)
            {
                RenderTexture.ReleaseTemporary(m_ShowTexure);
            }
        }
    }
}