using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Text;
using IStation.Model;

namespace IStation.WinFrmUI.River 
{
    internal class TideFromBookHelper
    {
        /// <summary>
        /// 获取潮汐数据
        /// </summary>
        static public List<Model.TileLevel> GetByDay1(
            DateTime startday, 
            out string error)
        {
            error = null;
            return ReadList(startday ); 
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="startday"></param>
        /// <param name="error"></param>
        /// <returns></returns>
        static public List<Model.TimeWaterLevel> GetByDay2(DateTime startday, out string error)
        {
            var waterLevels长江 = new List<TimeWaterLevel>();
            error = null;
                  var list = ReadList(startday );
            if (list != null)
            {
                foreach (var h in list)
                {
                    waterLevels长江.Add(
                       new TimeWaterLevel(
                       new DateTime(startday.Year, startday.Month, startday.Day, h.Hour, 0, 0), h.Level));
                }
            }
            else
            {
                error = null;
            }
            return waterLevels长江;
        }


        /// <summary>
        /// 读取 
        /// </summary>
        /// <param name="Startday"></param>
        /// <param name="Endday"></param>
        /// <param name="folder"></param>
        /// <returns></returns>
        static public List<Model.TimeWaterLevel> GetByDayRange(DateTime Startday, DateTime Endday,  out string error)
        {
            var waterLevels长江 = new List<TimeWaterLevel>();
            for (DateTime currentDate = Startday; currentDate <= Endday; currentDate = currentDate.AddDays(1))
            {
                var list1 = ReadList(currentDate );
                if (list1 != null && list1.Count > 0)
                {
                    for (int h = 0; h < 24; h++)
                    {
                        waterLevels长江.Add(
                           new TimeWaterLevel(
                           new DateTime(currentDate.Year, currentDate.Month, currentDate.Day, h, 0, 0),
                           list1[h].Level));
                    }
                } 
            }
            error = null;
            return waterLevels长江;
        }

        static private List<Model.TileLevel> ReadList(DateTime day )
        {
            var list = new List<Model.TileLevel>(); 
            var folder = System.IO.Path.Combine(IStation.DataFolderHelper.GetRootPath(),
                "Tide", "FromBook",
                day.Year.ToString(),
                day.ToString("yyyy-MM"));
            if (!System.IO.Directory.Exists(folder))
            {
                System.IO.Directory.CreateDirectory(folder);
                return null;
            }
            var fileName = System.IO.Path.Combine(folder,
                string.Format("{0}.csv", day.ToString("yyyy-MM-dd")));
            if (!System.IO.File.Exists(fileName))
            {
                return null;
            }
            //文件流读取
            System.IO.FileStream fs = new System.IO.FileStream(fileName, System.IO.FileMode.Open);
            System.IO.StreamReader sr = new System.IO.StreamReader(fs, Encoding.GetEncoding("gb2312"));

            string tempText;
            int line = 0;
            while ((tempText = sr.ReadLine()) != null)
            {
                line++;
                string[] arr = tempText.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);

                //一般第一行为标题，所以取出来作为标头
 
                    list.Add(new Model.TileLevel(Convert.ToInt32(arr[0]), Convert.ToDouble(arr[1])));
                
            }

            //关闭流
            sr.Close(); fs.Close();

            return list;
        }

        /// <summary>
        /// 写
        /// </summary>
        /// <param name="day"></param>
        /// <param name="list"></param>
        static public void SaveList(DateTime day,   List<Model.TileLevel> list)
        {
            if (list == null)
                return;
            try
            {
                var folder = System.IO.Path.Combine(IStation.DataFolderHelper.GetRootPath(),
                "Tide", "FromBook",
                day.Year.ToString(),
                day.ToString("yyyy-MM"));
                if (!System.IO.Directory.Exists(folder))
                {
                    System.IO.Directory.CreateDirectory(folder);

                }
                var fileName = System.IO.Path.Combine(folder,
                    string.Format("{0}.csv", day.ToString("yyyy-MM-dd")));


                StreamWriter streamWriter = new StreamWriter(fileName, false, System.Text.Encoding.GetEncoding("gb2312"));

                StringBuilder StringBuilder = new StringBuilder();
 
 

                // 写出数据
                foreach (var m in list)
                {
                    StringBuilder.AppendLine(); StringBuilder.AppendFormat("{0},{1}", m.Hour, m.Level);
                }
                streamWriter.Write(StringBuilder.ToString());

                streamWriter.Flush();
                streamWriter.Close();
            }
            catch (Exception ex)
            {
                IStation.LogHelper.WriteError("write tide file error:" + ex.Message, ex);
                return;
            }
        }

    }
}