using Furion.DependencyInjection;
using Microsoft.Extensions.Caching.Memory;
using Microsoft.Extensions.Localization;
using RoadFlow.Utility;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace RoadFlow.Data
{
    public class WorkDate: RoadFlowRepository<RoadFlow.Model.rf_workdate>, IWorkDate, ITransient
    {

        /// <summary>
        /// 得到一个时间加上几天之后的工作时间
        /// </summary>
        /// <param name="days">天数</param>
        /// <param name="dt">时间</param>
        /// <returns></returns>
        public DateTime GetWorkDateTime(double days, DateTime? dt = null)
        {
            DateTime dateTime = dt != null && dt.HasValue ? dt.Value : Utility.DateExtensions.Now;
            var yearList = GetYearList(dateTime.Year);
            int max = (int)Math.Floor(days);
            for (int i = 0; i < max; i++)
            {
                if (yearList.Exists(p => p.WorkDay == dateTime.AddDays(i).Date && p.IsWork == 0))
                {
                    max++;
                }
            }
            return dateTime.AddDays(max + (days - Math.Floor(days)));
        }


        /// <summary>
        /// 得到一年所有工作日
        /// </summary>
        /// <returns></returns>
        public List<Model.rf_workdate> GetYearList(int year)
        {
            string cacheKey = CACHEKEY + "_" + year.ToString();
            object obj = _memoryCache.Get(cacheKey);
            if (null == obj)
            {
                List<Model.rf_workdate> workDates = db.Queryable<Model.rf_workdate>()
                    .Where("YEAR(WorkDay)="+ year)
                    .ToList();
                _memoryCache.Set(CACHEKEY, workDates);
                return workDates;
                /*
                using (var db = new DataContext())
                {
                    string sql = db.IsOracle ? "SELECT * FROM RF_WorkDate WHERE TO_CHAR(WorkDay,'yyyy')=" + year :
                        db.IsPostgreSql ? "select * from rf_workdate where extract(year from WorkDay)=" + year :
                        "SELECT * FROM RF_WorkDate WHERE YEAR(WorkDay)=" + year;
                    var workDates = db.Query<Model.WorkDate>(sql);
                    _memoryCache.set(CACHEKEY, workDates);
                    return workDates;
                }*/
            }
            else
            {
                return (List<Model.rf_workdate>)obj;
            }
        }

    }
}