using BaseOUDAL;
using CxxCalcLib;
using Newtonsoft.Json;
using Qdp.Foundation.Implementations;
using Qdp.Pricing.Base.Implementations;

namespace YLErp.BLL
{
    public class CalendarBLL
    {
        private readonly YLContext db = new();

        public static bool IsListOld = true;

        private static List<calendar> AllcalendarModel = null;

        /// <summary>
        /// 获取今年及前2后3年的日历
        /// </summary>
        public static List<calendar> GetRecentCalendarModel()
        {
            var year = DateTime.Today.Year;
            var startYear = year - 2;
            var endYear = year + 3;
            return GetAllcalendarModel().Where(c => c.Year >= startYear && c.Year <= endYear && c.ValidState != ConsGlobal.InValid).ToList();
        }

        public static List<calendar> GetAllcalendarModel()
        {
            if (IsListOld)
            {
                using (var con = new YLContext())
                {
                    AllcalendarModel = con.calendar.ToList();
                }
                IsListOld = false;
            }
            return AllcalendarModel;
        }

        /// <summary>
        /// 在日历数据有变化时调用，以更新Qdp使用的日历数据
        /// </summary>
        public static void ResetCalendarForQdp()
        {
            Dictionary<string, CalendarHoliday> calendarHolidays;

            try
            {
                List<calendar> calendars = null;

                using (var db = new YLContext())
                {
                    calendars = db.calendar.ToList();
                    AllcalendarModel = calendars;
                }

                calendarHolidays = new Dictionary<string, CalendarHoliday>(StringComparer.OrdinalIgnoreCase);

                foreach (var x in calendars)
                {
                    if (!calendarHolidays.TryGetValue(x.Country, out var ch) || ch?.HolidayList == null)
                    {
                        calendarHolidays[x.Country] = ch = new CalendarHoliday()
                        {
                            HolidayList = new List<string>()
                        };
                    }

                    var json = x.HolidayJson?.Trim();

                    if (!string.IsNullOrEmpty(json) && json[0] == '[')
                    {
                        var list = JsonConvert.DeserializeObject<List<string>>(x.HolidayJson);

                        ch.HolidayList.AddRange(list);
                    }
                }
            }
            catch (Exception ex)
            {
                LogFactory.GetLogger<CalendarBLL>().Error("初始化日历数据失败", ex);
                return;
            }

            try
            {
                CalendarImpl.InitializeCalendarData(calendarHolidays);
            }
            catch (Exception ex)
            {
                LogFactory.GetLogger<CalendarBLL>().Error("为Qdp初始化日历数据失败", ex);
            }

            try
            {
                //设置C++雪球计算引擎的假日日历
                SetCalendarForCxxQdp(calendarHolidays);
            }
            catch (Exception ex)
            {
                LogFactory.GetLogger<CalendarBLL>().Error("为C++Qdp初始化日历数据失败", ex);
            }
        }


        /// <summary>
        /// 获取系统日期到所选日期的工作日天数
        /// </summary>
        public static int GetNonHolidayDays(DateTime toDate, string country = "chn")
        {
            if (toDate <= valuedateBLL.ValueDate)
            {
                return 0;
            }

            var holidays = GetAllcalendarModel().Where(c => c.Year >= valuedateBLL.ValueDate.Year && c.Year <= toDate.Year && c.Country == country).ToList();
            var count = 0;
            for (var to = toDate; to > valuedateBLL.ValueDate; to = to.AddDays(-1))
            {
                if (!holidays.Any(h => h.HolidayJson.Contains(to.ToString("yyyy,MM,dd"))))
                {
                    count++;
                }
            }
            return count;
        }

        /// <summary>
        /// 获取可选的最小报价到期日
        /// 最小报价到期日应为当前日期之后的第十个交易日
        /// </summary>
        public static DateTime GetMinQuoteDate()
        {
            var calendar = CalendarImpl.Get("chn");
            var qdpDate = new Date(DateTime.Parse(valuedateBLL.ValueDate.ToString("yyyy-MM-dd").ToString()));
            return calendar.AddBizDays(qdpDate, 9).DateTime;
        }

        public calendar UpdateSingle(int id, CalendarReq data)
        {
            var model = db.calendar.Find(id);
            Setcalendar(model, data);
            db.SaveChanges();
            IsListOld = true;
            ResetCalendarForQdp();
            return model;
        }

        /// <summary>
        /// 设置model，如果不为空就设置,如果为空则和之前一样
        /// </summary>
        public calendar Setcalendar(calendar model, CalendarReq data)
        {
            if (!string.IsNullOrEmpty(data.Country))
            {
                model.Country = data.Country;
            }

            if (data.Year != null)
            {
                model.Year = data.Year.Value;
            }

            if (!string.IsNullOrEmpty(data.HolidayJson))
            {
                model.HolidayJson = data.HolidayJson;
            }

            if (data.OptId != null)
            {
                model.OptId = data.OptId.Value;
            }

            if (!string.IsNullOrEmpty(data.OptName))
            {
                model.OptName = data.OptName;
            }

            if (data.UpdateDate != null && data.UpdateDate != DateTime.MinValue)
            {
                model.UpdateDate = data.UpdateDate.Value;
            }

            if (!string.IsNullOrEmpty(data.ValidState))
            {
                model.ValidState = data.ValidState;
            }

            return model;
        }

        /// <summary>
        /// 查询calendar
        /// </summary>
        public SearchListResult<calendar> SearchList(CalendarReq req)
        {

            var query = from source in db.calendar select source;
            if (req.LargeYear != null)
            {
                query = query.Where(d => d.Year >= req.LargeYear);
            }

            if (!string.IsNullOrEmpty(req.Country))
            {
                query = query.Where(d => d.Country.Contains(req.Country));
            }

            if (req.Year != null)
            {
                query = query.Where(d => d.Year == req.Year);
            }

            if (!string.IsNullOrEmpty(req.HolidayJson))
            {
                query = query.Where(d => d.HolidayJson.Contains(req.HolidayJson));
            }

            if (req.OptId != null)
            {
                query = query.Where(d => d.OptId == req.OptId);
            }

            if (!string.IsNullOrEmpty(req.OptName))
            {
                query = query.Where(d => d.OptName.Contains(req.OptName));
            }

            if (req.ValidState == "InValid")
            {
                query = query.Where(d => d.ValidState.Equals(req.ValidState));
            }
            else
            {
                query = query.Where(d => !d.ValidState.Equals("InValid"));
            }

            if (string.IsNullOrEmpty(req.sidx))
            {
                req.sidx = "id";
                req.sord = "desc";
            }
            if (req.LargeYear != null)
            {
                req.sidx = "year";
                req.sord = "asc";
            }
            var retListResult = query.ToSearchList(req);
            return retListResult;
        }

        /// <summary>
        /// 更新C++ 雪球计算引擎使用的日历数据
        /// </summary>
        private static void SetCalendarForCxxQdp(Dictionary<string, CalendarHoliday> calendarHolidays)
        {
            //using var wrapper = new CxxCalcApi();

            //foreach (var item in calendarHolidays)
            //{
            //    var dates = item.Value.HolidayList.Select(g =>
            //    {
            //        var date = g.Replace(",", "-");

            //        if (date.IndexOf("*") > 0)
            //        {
            //            date = date.Substring(0, date.IndexOf("*"));
            //        }
            //        return date;
            //    });
            //    if (dates.Count() > 0)
            //    {
            //        wrapper.CalcPlatform_SetCalendar(item.Key, String.Join(",", dates));
            //    }
            //}
        }
    }
}