using YLErp.BLL;

namespace YLErp.Modules.EodModule.SettlementModule
{
    /// <summary>
    /// 检查所有已开户的客户资信评级
    /// </summary>
    class EodCheckClientRating : ClientBaseService
    {
        readonly EodSettlementContextBase _context;

        public EodCheckClientRating(EodSettlementContextBase context) : base(context.UserInfo)
        {
            _context = context ?? throw new ArgumentNullException(nameof(context));
        }

        /// <summary>
        /// 检查所有已开户的客户资信评级
        /// </summary>
        public bool CheckClientRating()
        {
            var settleDate = _context.SettleDate;

            //var canSelectCreditVariety = PS.Config.ClientElement.CanSelectCreditVariety;

            //对当前“资信等级”快要到期的客户以某种方式进行提示，要求更新它的“资信等级”，如果逾期没有更新，【收盘操作】中应当可以检查出来，显示收盘不成功。 
            //必须审核通过！

            //1.检查当日
            var clientNames = CheckDateClientRating(settleDate);

            string CheckMsg;
            if (!string.IsNullOrWhiteSpace(clientNames))
            {
                CheckMsg = $"客户：{clientNames} ，在{settleDate:yyyy-MM-dd} 的资信评级不存在或未审核,请进入资信评级菜单检查 或者将该客户设为休眠状态！";
                _context.RaiseError(CheckMsg, "");
                return false;
            }

            //2.预警下一个交易日 
            var nextWorkDay = QdpModule.QdpCalendarHelper.GetNonHoliday(settleDate.AddDays(1));
            var clientNamesNextDay = CheckDateClientRating(nextWorkDay);
            if (!string.IsNullOrWhiteSpace(clientNamesNextDay))
            {
                CheckMsg = $"警告：客户：{clientNamesNextDay}，在{nextWorkDay:yyyy-MM-dd} 的资信评级不存在或未审核,请提前进入资信评级菜单检查！";
                _context.RaiseError(CheckMsg, "");
            }

            return true;
        }

        private string CheckDateClientRating(DateTime settleDate)
        {
            //历史收盘不验证
            var nowDate = valuedateBLL.ValueDate;
            if (nowDate > settleDate.Date)
            {
                return string.Empty;
            }

            //以下客户符合要求：有已审批的评级记录；当前系统日落在该客户已审批的评级记录里。
            var meetCondition = from client in DbContext.client.Where(x => x.ProcessStatus == "已开户")
                                join clientrating in DbContext.Client_Rating.Where(x => !x.IsDeleted && x.ProcessStatus == "已审批")
                                on client.id equals clientrating.ClientId
                                where (settleDate >= clientrating.RatingStartDate) && (settleDate <= clientrating.RatingDeadLine)
                                select new
                                {
                                    clientId = client.id
                                };

            //以下已开户的客户但不在上述名单的会被筛选
            var queryError = from client in DbContext.client.Where(x => x.ProcessStatus == "已开户")
                             where !meetCondition.Select(x => x.clientId).Contains(client.id)
                             select new
                             {
                                 clientId = client.id,
                                 clientName = client.Name
                             };

            if (queryError.Any())
            {
                var clients = string.Join(" , ", queryError.Select(x => x.clientName).ToArray());
                return clients;
            }

            return string.Empty;
        }
    }
}