using Cysharp.Threading.Tasks;
using Framework;
using PhxhSDK;
using UnityEngine;

namespace Gameplay.SubSystems
{
    /// <summary>
    /// 加载管理器
    /// </summary>
    public class LoadingManager : Singlenton<LoadingManager>, IInitable
    {
        /// <summary>
        /// 当前加载
        /// </summary>
        private LoadingExecutor curLoadingExecutor;
        /// <summary>
        /// 加载表现
        /// </summary>
        private LoadingDisplay loadingDisplay;

        #region 属性
        /// <summary>
        /// 是否正在运行
        /// </summary>
        public bool IsRuning
        {
            get 
            {
                if (null == curLoadingExecutor)
                    return false;

                return curLoadingExecutor.IsRunning;
            }
        }

        /// <summary>
        /// 实际进度
        /// </summary>
        public float Progress
        {
            get 
            {
                if (null == curLoadingExecutor)
                    return 0f;

                return curLoadingExecutor.Progress;
            }
        }

        /// <summary>
        /// 表现进度
        /// </summary>
        public float ShowProgress
        {
            get 
            {
                if (null == loadingDisplay)
                    return Progress;

                loadingDisplay.Update(Progress);

                return loadingDisplay.ShowProgress;
            }
        }

        /// <summary>
        /// 是否等待中
        /// </summary>
        public bool IsWait 
        {
            get 
            {
                if (null == curLoadingExecutor)
                    return true;

                return curLoadingExecutor.IsWait;
            }
            set 
            {
                curLoadingExecutor.IsWait = value;
            }
        }
        #endregion

        public void Init()
        {
            loadingDisplay = new();
        }

        public void Release()
        {
            loadingDisplay = null;
        }

        /// <summary>
        /// 开始加载
        /// </summary>
        /// <param name="executer">加载器</param>
        /// <param name="changeProgressTime">进度变化平滑插值时间</param>
        /// <param name="loadingCompleteWaitTime">加载完成后的等待时间</param>
        /// <returns></returns>
        public async UniTask ExecuteLoading(LoadingExecutor executer, float changeProgressTime = 1f, float loadingCompleteWaitTime = 0.2f)
        {
            if (null == executer)
            {
                DebugUtil.LogError("错误，启动空的加载器");
                return;
            }

            if (IsRuning)
            {
                DebugUtil.LogError("错误，有加载器没有加载完");
                return;
            }

            changeProgressTime = Mathf.Max(0f, changeProgressTime);
            loadingCompleteWaitTime = Mathf.Max(0f, loadingCompleteWaitTime);

            loadingDisplay.SetInfo(changeProgressTime);
            curLoadingExecutor = executer;

            await curLoadingExecutor.Excute(changeProgressTime + loadingCompleteWaitTime);
        }
    }

    /// <summary>
    /// loading界面类型
    /// </summary>
    public enum E_LoadingType
    {
        /// <summary>
        /// 登录游戏
        /// </summary>
        Login,
        /// <summary>
        /// 通用加载
        /// </summary>
        CommonLoading,
        /// <summary>
        /// 通用快速黑屏加载
        /// </summary>
        QuickBlack,
    }

    /// <summary>
    /// 加载结果
    /// </summary>
    public enum E_LoadingResult
    {
        /// <summary>
        /// 完成加载
        /// </summary>
        Success = 0,

        /// <summary>
        /// 加载出错（测试）
        /// </summary>
        ErrorTest = 1,

        /// <summary>
        /// 启动游戏时网络连接出错
        /// </summary>
        GameStartSevNetError = 2,

        /// <summary>
        /// 当前设备网络问题
        /// </summary>
        DeviceNetError = 3,
    }
}