using TinyPinyin;
using YieldChain.Helpers;
using YLErp.BLL;
using YLErp.DBModels;
using YLErp.Modules;

namespace YLErp.CustomizedBizLogic
{
    public class BizLogicZheShang : BizLogicDefault
    {
        /// <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 clientNumber = DataCacheProvider.GetClientDataSource().GetData(reqModel.clientId)?.Number.TrimToNull();
            //合并起来作为获取递增序号的取值条件
            var leftPart = string.Empty;
            var fullSize = 0; leftPart = $"GLMS-IS-{reqModel.trade.TradeDate:yyyyMMdd}";
            fullSize = leftPart.Length + 4;
            //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.Length == fullSize && x.ValidState != ConsGlobal.InValid)
                .OrderByDescending(x => x.TradeNumber).Select(n => n.TradeNumber).FirstOrDefault() ?? string.Empty;

            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) && x.TradeNumber.Length == fullSize)
                    .OrderByDescending(x => x.TradeNumber).Select(n => n.TradeNumber).FirstOrDefault() ?? string.Empty;
                tradeNumber = tradeNumber.CompareTo(importTradeNumber) > 0 ? tradeNumber : importTradeNumber;
            }

            //获取总的该用户最大的交易编号记录
            int newNumber = string.IsNullOrWhiteSpace(tradeNumber) ? 1 : (int.Parse(tradeNumber.Substring(leftPart.Length)) + 1);

            return getTradeNumber(newNumber, leftPart, db);
        }

        private string getTradeNumber(int newNumber, string leftPart, YLContext db)
        {
            if (newNumber < 1e4)
            {
                var childTradeNumberPart = leftPart + newNumber.ToString("D4") + "-";
                if (db.trade.Any(x => EF.Functions.Like(x.TradeNumber, $"{childTradeNumberPart}%") && x.ValidState != "InValid"))
                {
                    return getTradeNumber(newNumber + 1, leftPart, db);
                }
                else
                {
                    return leftPart + newNumber.ToString("D4");
                }
            }
            else
            {
                throw new Exception("该客户存在最大交易编号" + (newNumber - 1) + "，超出了限制规则9999，生成交易编号失败");
            }
        }

        public override void GenerateClientCode(Client clientObj, IQueryable<Client> clientDbQuery)
        {
            if (string.IsNullOrWhiteSpace(clientObj.Number))
            {
                var firstPY = PingYinHelper.GetFirstPinYin_Enhance(clientObj.Name);
                var year = DateTime.Now.ToString("yy");
                var result = "";
                lock (_clientCodeLock)
                {
                    var existingClientCodes = clientDbQuery.Where(x => x.Number.StartsWith(year)).Select(x => x.Number).ToList();
                    var number = existingClientCodes.Count();
                    do
                    {
                        number++;
                        result = year + number.ToString("000");
                    } while (existingClientCodes.Any(O => O.StartsWith(result)));

                    clientObj.Number = result + firstPY;
                }
            }
        }
    }
}