using System.Collections;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

namespace Chiva.Toolkit.Function.NoBorder
{
    public class WindowsSetting : MonoSingleton<WindowsSetting>,IPointerDownHandler,IPointerUpHandler,IPointerExitHandler
    {
        /// <summary>
        /// 是否可以拖拽
        /// </summary>
        [SerializeField]
        private bool m_IsDragging;

        [SerializeField]
        private Rect m_ScenePosition;

        /// <summary>
        /// 当前项目正式发布时的产品名称
        /// </summary>
        [SerializeField]
        private string m_ProductName;

        public bool playOnAwake;

        bool runBord= false;

        void Awake()
        {
            m_ProductName = Application.productName;

            if (playOnAwake)
            {
                SetBorderModel(true,m_ScenePosition.width,m_ScenePosition.height);
            }
            else
            {
                WindowsTools.GetCurrentWindowHandle(m_ProductName);
            }
        }

        public void SetBorderModel(bool bord,float width, float height) 
        {
            CanvasScaler canvasScaler = transform.GetComponent<CanvasScaler>();

            if (bord)
            {
                if (!string.IsNullOrEmpty(m_ProductName))
                {
                    WindowsTools.GetCurrentWindowHandle(m_ProductName);
                    runBord = true;

                    canvasScaler.uiScaleMode = CanvasScaler.ScaleMode.ConstantPixelSize;
                    SetNoBorderModel(width, height);
                }
            }
            else 
            {
                runBord = false;
                canvasScaler.uiScaleMode = CanvasScaler.ScaleMode.ScaleWithScreenSize;
                Screen.SetResolution((int)width, (int)height,true);
            }
        }

        // Update is called once per frame
        void Update()
        {
            if (!runBord) return;

            if (m_IsDragging == true)
            {
                WindowsTools.DragWindow();
            }
        }

        /// <summary>
        /// 最小化按钮
        /// </summary>
        public void OnMinBtnClick()
        {
            WindowsTools.SetMinWindows();
        }

        /// <summary>
        /// 设置无边框
        /// </summary>
        public void SetNoBorder(float width,float height)
        {
            float posX = (Screen.currentResolution.width - width) / 2;
            float posY = (Screen.currentResolution.height - height) / 2;

            Rect rect = new Rect(posX, posY, width, height);

            WindowsTools.SetNoBorderWindow(rect);
        }

        /// <summary>
        /// 设置无边框模式
        /// </summary>
        public void SetNoBorderModel(float width, float height)
        {
            Screen.SetResolution(
                (int)width,
                (int)height,
                false);

            //等待当前帧完成，然后去除边框
            StartCoroutine(WaitNoBorder(width,height));
        }

        /// <summary>
        /// 等待去除边框
        /// </summary>
        /// <returns></returns>
        private IEnumerator WaitNoBorder(float width, float height)
        {
            yield return new WaitForEndOfFrame();
            yield return new WaitForFixedUpdate();

            if (!Screen.fullScreen)
            {
                SetNoBorder(width,height);
            }
        }
        
        /// <summary>
        /// 退出
        /// </summary>
        public void ShutDownFunction()
        {
            Application.Quit();
        }

        #region 内置函数

        public void OnPointerDown(PointerEventData eventData)
        {
            //m_IsDragging = true;
        }

        public void OnPointerExit(PointerEventData eventData)
        {
            //m_IsDragging = false;
        }

        public void OnPointerUp(PointerEventData eventData)
        {
            //m_IsDragging = false;
        }

        #endregion
    }
}