using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using XdCxRhDW.Repostory.EFContext;
using XdCxRhDW.Repostory.Model;

namespace XdCxRhDW.Repostory
{
    public static class XlCache
    {
        public static async Task<List<XlInfo>> GetAllAsync()
        {
            try
            {
                List<XlInfo> list = new List<XlInfo>();
                if (!Directory.Exists("DbPart")) return list;
                var yearDirs = Directory.EnumerateDirectories(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "DbPart")).OrderByDescending(p => Convert.ToInt32(new DirectoryInfo(p).Name));//年目录,倒叙排列
                foreach (var yearDir in yearDirs)
                {
                    //每一天的db文件,倒序排列
                    var dayFiles = Directory.EnumerateFiles(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, yearDir),"*.db").OrderByDescending(p => Convert.ToInt32(new DirectoryInfo(p).Name.Substring(0, 4)));
                    foreach (var dayFile in dayFiles)
                    {
                        using (RHDWPartContext db = RHDWPartContext.GetContext(dayFile))
                        {
                            list.AddRange(await db.XlInfos.ToListAsync());
                            if (list.Count > 2000)
                                return list;
                        }
                    }
                }
                return list;
            }
            catch (Exception ex)
            {
                Serilog.Log.Error(ex, "加载星历信息异常");
                return null;
            }
        }
    }
}