using Cis.Application.Core.Component.MarkSeacher;
using Cis.Application.Core.Component.PtzServer;
using EC.Helper.CameraSDK;
using FreeRedis;
using StackExchange.Profiling.Internal;
using System.Collections.Concurrent;

namespace Cis.Application.Core;

public class CameraDataCenter : ISingleton
{
    #region Attr

    private readonly RedisClient _cache;
    private readonly CameraDataOptions _options;
    private readonly ICameraSdkServer _cameraSdkServer;
    private readonly IMarkSearcherServer _markSearcherServer;

    /// <summary>
    /// {cameraId, List(MarkLabelCalcResult)}
    /// </summary>

    private ConcurrentDictionary<long, List<MarkLabelCalcResult>> SearchResultListDict { get; set; } = new();

    #endregion Attr

    public CameraDataCenter(
        RedisClient cache,
        ICameraSdkServer cameraSdkServer,
        IMarkSearcherServer markSearcherServer
    )
    {
        _cache = cache;
        _options = App.GetOptions<CameraDataOptions>();
        _cameraSdkServer = cameraSdkServer;
        _markSearcherServer = markSearcherServer;
        InitThread();
    }

    #region Loop

    private Thread RefreshCameraPtzThread { get; set; }

    private Thread RefreshMarkSearcherThread { get; set; }

    /// <summary>
    /// 初始化线程
    /// </summary>
    private void InitThread()
    {
        // 初始化 CameraPtzThread
        RefreshCameraPtzThread = new Thread(async () =>
        {
            while (true)
            {
                await RefreshCameraPtzInfos();
                Thread.Sleep(_options.CameraPtz.LoopInterval);
            }
        })
        {
            IsBackground = true// 设置后台线程
        };
        // 启动 CameraPtzThread
        RefreshCameraPtzThread.Start();

        //// 初始化 MarkSearcherThread
        //RefreshMarkSearcherThread = new Thread(async () =>
        //{
        //    while (true)
        //    {
        //        await RefreshMarkSearchers();
        //        Thread.Sleep(_options.MarkSearcher.LoopInterval);
        //    }
        //})
        //{
        //    IsBackground = true// 设置后台线程
        //};
        //// 启动 MarkSearcherThread
        //RefreshMarkSearcherThread.Start();
    }

    /// <summary>
    /// 刷新所有相机 ptz
    /// 有待改善，应设置超时计数机制
    /// https://blog.csdn.net/qq_28368039/article/details/118597396
    /// </summary>
    private async Task RefreshCameraPtzInfos()
    {
        string[] cameraIpList = await _cache.HKeysAsync(CacheInfo.CameraIpCounts);
        List<Task> tasks = new();
        foreach (string cameraIp in cameraIpList)
        {
            tasks.Add(RefreshCameraPtzInfo(cameraIp));
        }
        await Task.WhenAny(Task.WhenAll(tasks), Task.Delay(_options.CameraPtz.Timeout));
    }

    /// <summary>
    /// 刷新相机 ptz
    /// </summary>
    /// <param name="cameraIp"></param>
    /// <returns></returns>
    private async Task RefreshCameraPtzInfo(string cameraIp)
    {
        bool ret = _cameraSdkServer.TryGetPtzInfoByIp(cameraIp, out PtzInfo ptzInfo);
        if (!ret) return;
        await _cache.HSetAsync(CacheInfo.CameraPtzInfos, cameraIp, ptzInfo.ToJson());
    }

    /// <summary>
    /// 刷新所有 markSearcher
    /// </summary>
    private async Task RefreshMarkSearchers()
    {
        string[] cameraIdList = await _cache.HKeysAsync(CacheInfo.CameraId2Ip);
        List<Task> tasks = new();
        foreach (string cameraId in cameraIdList)
        {
            tasks.Add(RefreshMarkSearcher(cameraId.ToLong()));
        }
        await Task.WhenAny(Task.WhenAll(tasks), Task.Delay(_options.CameraPtz.Timeout));
    }

    /// <summary>
    /// 刷新 markSearcher
    /// </summary>
    /// <param name="cameraId"></param>
    /// <returns></returns>
    private async Task RefreshMarkSearcher(long cameraId)
    {
        MarkSearcherBase markSearcher = _markSearcherServer.GetSearcher(cameraId);
        if (markSearcher == null) return;
        string cameraIp = await _cache.HGetAsync(CacheInfo.CameraId2Ip, cameraId.ToString());
        string ptzInfoStr = await _cache.HGetAsync(CacheInfo.CameraPtzInfos, cameraIp);
        if (string.IsNullOrEmpty(ptzInfoStr)) return;
        PtzInfo ptzInfo = ptzInfoStr.ToObject<PtzInfo>();
        if (ptzInfo == null) return;
        markSearcher.UpdateCameraCalcParams(ptzInfo);
        List<MarkLabelCalcResult> resultList = await markSearcher.SearchAsync();
        SearchResultListDict[cameraId] = resultList;
    }

    #endregion Loop

    #region Base Method

    public List<MarkLabelCalcResult> GetMarkLabelCalcResultList(long cameraId)
    {
        bool ret = SearchResultListDict.TryGetValue(cameraId, out List<MarkLabelCalcResult> resultList);
        return ret ? resultList : new List<MarkLabelCalcResult>();
    }

    #endregion Base Method

    #region Base Method Async

    public async Task<List<MarkLabelCalcResult>> GetMarkLabelCalcResultListAsync(long cameraId)
    {
        return await Task.Run(() =>
        {
            return GetMarkLabelCalcResultList(cameraId);
        });
    }

    #endregion Base Method Async
}