using YLErp.BLL;
using YLErp.Modules;

namespace YLErp.CustomizedBizLogic
{
    public class BizLogicHuaXi : BizLogicDefault
    {
        /// <summary>
        /// 生成客户编号 -- 华西还要生成 主协议/补充协议/履保协议
        /// </summary>
        /// <param name="initialCode">客户创建时的初始编号，如果没有传null</param>
        public override void GenerateClientCode(Client clientObj, IQueryable<Client> clientDbQuery)
        {
            if (string.IsNullOrWhiteSpace(clientObj.Number))
            {
                var result = "CW";
                lock (_clientCodeLock)
                {
                    result += DateTime.Now.Year.ToString();

                    var existingClientCodes = clientDbQuery.Where(x => x.Number.Contains(result)).Select(x => x.Number).ToList();
                    var maxNumber = 0;
                    if (existingClientCodes.Count > 0)
                    { maxNumber = existingClientCodes.Max(x => ParseNumber(x.Substring(6))); }
                    var nextNum = maxNumber + 1;
                    if (nextNum < 10000)
                    {
                        result += nextNum.ToString("D4");
                    }
                    else
                    {
                        //如果大于9999，将生成CW201810000等字符串，需求是说不会大于10000的
                        result += nextNum.ToString();
                    }
                    clientObj.Number = 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));
            }

            //对于对冲交易、场内交易等没有设置客户的
            if (reqModel.clientId == 0)
            {
                return DateTime.Now.ToString("yyyyMMddHHmmssfff");
            }

            var client = DataCacheProvider.GetClientDataSource().GetData(reqModel.clientId);
            const string SACO = "SACO-"; //期权
            const string SACT = "SACT-"; //互换
            const string company = "华西证券-";
            string year = reqModel.trade.TradeDate?.ToString("yyyy") + "-";

            //合并起来作为获取递增序号的取值条件
            var leftPart = SACO + company + year;

            if (reqModel.trade.TradeType == "收益互换")
            {
                leftPart = SACT + company + year;
            }

            var XXleftPart = "XX" + leftPart;


            //获取数据库该用户最大的交易编号记录
            var tradeNumber = db.trade.Where(x => x.TradeNumber.StartsWith(leftPart) || x.TradeNumber.StartsWith(XXleftPart)).Select(x => x.TradeNumber.Replace(leftPart, "").Replace("XX", "")).ToList();

            if (reqModel.importTrades != null && reqModel.importTrades.Any())
            {
                //获取导入交易中该客户最大的交易编号记录
                var importTradeNumber = reqModel.importTrades.Where(x => x.TradeNumber.StartsWith(leftPart)).Select(x => x.TradeNumber.Replace(leftPart, "").Replace("XX", "")).ToList();
                tradeNumber.AddRange(importTradeNumber);
            }
            var numberStrings = tradeNumber.Where(x => int.TryParse(x, out var num2));
            var number = (numberStrings.LongCount() > 0 ? numberStrings.Max(x => int.TryParse(x, out int a) ? a : 0) : 0) + 1;

            if (number < 1e3)
            {
                return leftPart + number.ToString("D3");
            }
            else
            {
                return leftPart + number.ToString();
            }
        }

        private int ParseNumber(string clientNumber)
        {
            int.TryParse(clientNumber, out var number);
            return number;
        }
    }
}