using YLErp.BLL;
using YLErp.DBModels.Converts;
using YLErp.Helpers;
using YLErp.Modules;
using YLErp.Modules.TradeModule;

namespace YLErp.CustomizedBizLogic
{
    public class BizLogicGDGZ : BizLogicDefault
    {
        /// <summary>
        /// 生成客户编号
        /// 生成规则：C01A开头+00001（5位序号），例：C01A00001
        /// </summary>
        /// <param name="initialCode">客户创建时的初始编号，如果没有传null</param>
        /// <param name="db"></param>
        public override void GenerateClientCode(Client clientObj, IQueryable<Client> clientDbQuery)
        {
            var prefix = "C01A";
            if (string.IsNullOrWhiteSpace(clientObj.Number))
            {
                lock (_clientCodeLock)
                {
                    string result;
                    var index = new TradeContractBLL(0, "系统").GetRuleIndex(prefix);
                    if (index < 100000)
                    {
                        result = index.ToString("D5");
                    }
                    else
                    {
                        //如果大于99999，将生成C01A100000等字符串，需求是说不会大于100000的
                        result = index.ToString();
                    }

                    clientObj.Number = prefix + result;
                }
            }
        }

        /// <summary>
        /// 在交易确认前生成交易编号
        /// </summary>
        public override string GenerateTradeNumberBeforeConfirm(TradeNumberReqModel reqModel, YLContext db)
        {
            if (reqModel is null)
            {
                throw new ArgumentNullException(nameof(reqModel));
            }

            var client = DataCacheProvider.GetClientDataSource().GetData(reqModel.clientId);

            if (string.IsNullOrWhiteSpace(client.Abbreviation))
            {
                throw new Exception("生成交易编号失败，请先添加客户简称");
            }
            //相对行权价时，交易编号中要使用实际的行权价;
            var strike = reqModel.trade.Strike ?? 0;
            if (reqModel.trade.IsMoneynessOptionData) { strike *= (reqModel.trade.SpotPrice ?? 0); }
            var result = "";
            if (reqModel.trade.StructureType == "结构化交易" && reqModel.trade.TradeNumber == "FWD")
            {
                result = $"{client.Abbreviation}{DateFormat(reqModel.trade.TradeDate.Value)}{DateFormat(reqModel.trade.ExerciseDate.Value)}{reqModel.trade.UnderlyingCode}FWD";
            }
            else if (reqModel.trade.StructureType == "结构化交易" && reqModel.trade.TradeNumber == "SPD")
            {
                result = $"{client.Abbreviation}{DateFormat(reqModel.trade.TradeDate.Value)}{DateFormat(reqModel.trade.ExerciseDate.Value)}{reqModel.trade.UnderlyingCode}SPD";
            }
            else if (reqModel.trade.StructureType == "跨式组合")
            {
                result = $"{client.Abbreviation}{DateFormat(reqModel.trade.TradeDate.Value)}{DateFormat(reqModel.trade.ExerciseDate.Value)}{reqModel.trade.UnderlyingCode}STD";
            }
            else if (reqModel.trade.StructureType == "宽跨式组合")
            {
                result = $"{client.Abbreviation}{DateFormat(reqModel.trade.TradeDate.Value)}{DateFormat(reqModel.trade.ExerciseDate.Value)}{reqModel.trade.UnderlyingCode}STG";
            }
            else
            {
                result = $"{client.Abbreviation}{DateFormat(reqModel.trade.TradeDate.Value)}{DateFormat(reqModel.trade.ExerciseDate.Value)}{reqModel.trade.UnderlyingCode}{(BuySellConvert.GetClientBuySell(reqModel.trade.BuySell) == "买入" ? "B" : "S")}{(reqModel.trade.OptionType == "看涨" ? "C" : "P")}K{DoubleFormat(strike, 4)}";
            }

            #region 2019-08-09改为下面的逻辑

            //var existCount = db.trade.Where(x => x.TradeNumber.Contains(result)).Count();
            //var hasAddedCount = trades == null ? 0 : trades.Where(x => x.TradeNumber.Contains(result)).Count();
            //if (existCount + hasAddedCount > 0)
            //{
            //    result = result + Convert.ToChar('A' + (existCount + hasAddedCount));
            //}

            #endregion
            var tradeNumbers = db.trade.Where(x => x.TradeNumber.ToUpper().StartsWith(result.ToUpper())).Select(O => O.TradeNumber).ToList();

            if (tradeNumbers.Where(x => x.ToUpper().Contains(result.ToUpper())).Any())
            {
                var tempNumber = "";
                var index = 1;
                do
                {
                    tempNumber = result;
                    tempNumber += DataHelper.ConvertToLetter(index++);
                } while (tradeNumbers.Where(x => x.ToUpper().Contains(tempNumber.ToUpper())).Any());
                result = tempNumber;
            }

            return result;
        }

        private string DateFormat(DateTime date)
        {
            var month = date.Month.ToString();
            if (date.Month == 10)
            {
                month = "A";
            }
            else if (date.Month == 11)
            {
                month = "B";
            }
            else if (date.Month == 12)
            {
                month = "C";
            }
            var day = date.Day.ToString().PadLeft(2, '0');
            return month + day;
        }

        /// <summary>
        /// 格式化Double
        /// </summary>
        /// <param name="value"></param>
        /// <param name="num">小数点后位数</param>
        /// <param name="ignoreZero">是否忽略小数点后的0</param>
        /// <returns></returns>
        private string DoubleFormat(double? value, int num = 1, bool ignoreZero = true)
        {
            if (value == null)
            {
                return "0";
            }
            if (Math.Floor(value.Value) == value)
            {
                return ((int)value).ToString();
            }
            var fromatStr = "0";
            if (num > 0) { fromatStr += ".".PadRight(num + 1, ignoreZero ? '#' : '0'); }
            return value.Value.ToString(fromatStr).Replace('.', 'D');
        }
    }
}