using Microsoft.Extensions.DependencyInjection;
using YieldChain.Commons;
using YLErp.Cache;
using YLErp.Modules.CalculationModule;
using static YLErp.ConsGlobal;

namespace YLErp.Modules.TradeRiskCalcModule.TaskRunner
{
    /// <summary>
    /// 场内实时持仓运行
    /// </summary>
    class ExchangePositionRunner : InnerRunnerBase
    {

        readonly static IYLCache ylCache;
        static ExchangePositionRunner()
        {
            ylCache = YLServiceLocator.ServiceProvider.GetService<IYLCache>();
        }

        public override string ToString()
        {
            return "场内持仓";
        }

        /// <summary>
        /// 对冲持仓计算结果
        /// </summary>
        public ExchangePositionCalcResult Result { get; private set; }

        /// <summary>
        /// 执行任务
        /// </summary>
        public override void StartTask(InnerRunTaskData taskData)
        {
            if (!taskData.IsReady)
            {
                return;
            }

            if (IsRunning)
            {
                lock (this)
                {
                    if (IsRunning)
                    {
                        //120秒的超时时间
                        if (IsTimeOut(120))
                        {
                            CancelTask(5000);
                        }
                        else
                        {
                            return;
                        }
                    }
                }
            }
            else
            {
                lock (this)
                {
                    //3秒的频次控制
                    if (IsRunning || !IsTimeOut(3))
                    {
                        return;
                    }
                }
            }

            AppManager.SetSysInfo("场内实时持仓API-计算开始", "开始");

            InnerStartTask(() =>
            {
                //获取所有未结算过的对冲交易
                var newTrades = taskData.TradeDataSource.GetExchangeTrades() ?? Enumerable.Empty<ExchangeTrade>();

                //昨日持仓信息
                var lastEodPositions = taskData.DataProvider.YdEodPositionDataProvider.GetExchangeTradePositionList("持仓").ToArray();

                var resultItems = new ExchangePositionCalcService(taskData.ValueDate, new ExchangeTradeCommissionCalc())
                            .Calculate(newTrades, lastEodPositions, taskData.DataProvider.ExchangeOptionPriceProvider);

                //如果结果的开始时间大于当前任务的开始时间则丢失计算结果
                var result = GetResult();
                if (result == null || result.StartTime < StartTime)
                {
                    result = new ExchangePositionCalcResult(StartTime)
                    {
                        Items = resultItems,
                        ValueDate = taskData.ValueDate,
                        LastDate = taskData.PreSettleDate
                    };

                    SaveResult(result);

                    AppManager.SetSysInfo("场内实时持仓API-计算完成", "耗时" + (DateTime.Now - StartTime).TotalSeconds.ToString("F") + "ms");
                }

            }).ContinueWith(t =>
            {
                if (t.Exception != null)
                {
                    LogFactory.GetLogger("实时风险").Error(t.Exception, $"[场内实时持仓API]计算出错");
                }
                else
                {
                    LogFactory.GetLogger("实时风险").Debug($"[场内实时持仓API]计算完成");
                }

                InnerCompleteTask();
            });
        }


        private const string ExchangePositionCalcResultRedisKey = "ExchangePosition";

        /// <summary>
        /// 将结果保存
        /// </summary>
        private void SaveResult(ExchangePositionCalcResult result)
        {
            if (ylCache.CacheEnable())
            {
                ylCache.StringSet<ExchangePositionCalcResult>($"{ExchangePositionCalcResultRedisKey}", result);
            }
            else
            {
                Result = result;
            }
        }

        /// <summary>
        /// 查询结果
        /// </summary>
        /// <returns></returns>
        public ExchangePositionCalcResult GetResult()
        {
            if (ylCache.CacheEnable())
            {
                return ylCache.StringGet<ExchangePositionCalcResult>($"{ExchangePositionCalcResultRedisKey}");
            }
            else
            {
                return Result;
            }
        }
    }
}