using System.Linq;
using System.Linq.Dynamic.Core;
using YLErp.Modules.DataProviderModule;

namespace YLErp.Modules.EodModule.SettlementModule
{
    /// <summary>
    /// 检查当日结算价，是否全部进系统。 
    /// </summary>
    class EodCheckSettlePrice : EodSettleServiceBaseV2
    {
        public const string Step = "检查标的结算价格缺失";

        public EodCheckSettlePrice(EodSettlementContextV2 context) : base(context)
        {
            ResetDbContext();
            //DbContext.SetDebugLog();
        }

        /// <summary>
        /// 检查收盘价
        /// </summary>
        public void Execute()
        {
            if (!_context.OtcTrades.Any() && !hasSwaptrade())
            {
                return;
            }

            var request = _context.Request;
            var settleDate = _context.SettleDate;
            var clienIds = _context.Request.ClientIds;

            IQueryable<string> allQuery = null;
            if (!EodPriceQueryService.CheckFR007Price(_context.SettleDate))
            {
                _context.RaiseError(Step, $"{_context.SettleDate:yyyy年MM月dd日}FR007价格未入库");
            }
            //判断当日结算价是否已经入库
            if (!EodPriceQueryService.CheckDbExists(_context.SettleDate))
            {
                _context.RaiseError(Step, "结算价格未入库");
            }

            //检查是否所有待结算交易标的价格都存在
            //获取所有现存(抵押状态)抵押品信息  增加抵押品价格检查

            if (request.IsSettleOtcTrades)
            {
                var tradePredicate = _context.PredicateBuilder.GetOtcTradePredicate()
                    .And(t => t.TradeType != "自定义交易" && t.TradeType != "收益互换" && t.UnderlyingCode != null);

                //新增客户筛选 tw
                if (clienIds != null)
                {
                    tradePredicate = tradePredicate.And(l => clienIds.Contains(l.ClientId));
                }

                allQuery = DbContext.trade.Where(tradePredicate).Select(n => n.UnderlyingCode).Distinct();

                var clientProductPredicate = _context.PredicateBuilder.GetClientProductPredicate();

                //新增客户筛选 tw
                if (clienIds != null)
                {
                    clientProductPredicate = clientProductPredicate.And(l => clienIds.Contains(l.ClientId));
                }

                var clientProductQuery = from t in DbContext.clientcashincashout_product.Where(clientProductPredicate)
                                         join um in DbContext.underlying_manager on t.UnderlyingId equals um.id
                                         select um.UnderlyingCode;

                allQuery = allQuery.Union(clientProductQuery.Distinct());
            }

            //检查场内标的
            //if (request.IsSettleExchangeTrades)
            //{
            //    var exTradePredicate = _context.PredicateBuilder.GetExchangeTradePredicate();

            //    var exTradeQuery = DbContext.ExchangeTrade.Where(exTradePredicate).Select(n => n.UnderlyingCode);

            //    allQuery = allQuery == null ? exTradeQuery.Distinct() : allQuery.Union(exTradeQuery.Distinct());

            //    var preSettleDate = _context.PreSettleDate;
            //    //最后一个交易日持仓信息
            //    var futureTypes = ConsGlobal.InstrumentType.GetFutureTypes();
            //    var positionQuery = from t in DbContext.eod_trade_position
            //                        join um in DbContext.underlying_manager on t.UnderlyingCode equals um.UnderlyingCode
            //                        where t.ValueDate == preSettleDate && t.Amount != 0
            //                            && ConsTrade.TradeTypesForHedge.Contains(t.TradeType)
            //                            && (!futureTypes.Contains(um.UnderlyingInstrumentType) || um.MaturityDate >= settleDate)
            //                        select t.UnderlyingCode;

            //    allQuery = allQuery.Union(positionQuery.Distinct());
            //}

            if (allQuery == null)
            {
                return;
            }

            //检查是否所有标的都在结算日有结算价格

            var umCodeArr = allQuery.ToArray();
            var swapUmCodeArr = GetSwapUnderlyingCodes();
            var codeArr = umCodeArr.Union(swapUmCodeArr);
            var eodPriceProvider = _context.GetEodPriceProvider().Initialize(codeArr);
            // var preEodPriceProvidaer = _context.GetPreEodPriceProvider().Initialize(swapUmCodeArr);
            var umCodes = codeArr.Where(n => !string.IsNullOrEmpty(n) && !eodPriceProvider.HasValue(n)).ToHashSet(StringComparer.OrdinalIgnoreCase);
            //var swapUmCodes= swapUmCodeArr.Where(n => !string.IsNullOrEmpty(n) && !preEodPriceProvidaer.HasValue(n)).ToHashSet(StringComparer.OrdinalIgnoreCase);
            //排除掉节假日不需要结算的交易
            foreach (var t in _context.HolidayTrades)
            {
                if (!string.IsNullOrEmpty(t.UnderlyingCode))
                {
                    umCodes.Remove(t.UnderlyingCode);
                }
            }

            if (umCodes.Any())
            {
                var codes = string.Join(", ", umCodes);

                _context.RaiseError(Step, "标的代码:" + codes);
            }
        }
        /// <summary>
        /// 获取互换标的
        /// </summary>
        /// <returns></returns>
        private string[] GetSwapUnderlyingCodes()
        {
            var tradePredicate = _context.PredicateBuilder.GetOtcSwapTradePredicate();
            var query = from t in DbContext.trade.Where(tradePredicate)
                        join p in DbContext.swap_position on t.id equals p.SwapTradeId
                        where p.IsInitial && !string.IsNullOrEmpty(p.UnderlyingCode) && !p.Invalid
                        select p.UnderlyingCode;
            return query.Distinct().ToArray();
        }
        private bool hasSwaptrade()
        {
            var tradePredicate = _context.PredicateBuilder.GetOtcSwapTradePredicate();
            return DbContext.trade.Where(tradePredicate).Any();
        }
    }
}