using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _20230724_MBJC_upperpc.Common
{
    public static class tools
    {
        #region  内存清理
        /// <summary>
        ///设置线程工作的空间
        /// </summary>
        /// <param name="process">线程</param>
        /// <param name="minSize">最小空间</param>
        /// <param name="maxSize">最大空间</param>
        /// <returns></returns>
        [System.Runtime.InteropServices.DllImportAttribute("kernel32.dll", EntryPoint = "SetProcessWorkingSetSize", ExactSpelling = true, CharSet = System.Runtime.InteropServices.CharSet.Ansi, SetLastError = true)]
        private static extern int SetProcessWorkingSetSize(IntPtr process, int minimumWorkingSetSize, int maximumWorkingSetSize);
        public static void ClearMemory(object o)
        {
            GC.Collect();
            GC.SuppressFinalize(o);


            if (Environment.OSVersion.Platform == PlatformID.Win32NT)
            {
                SetProcessWorkingSetSize(System.Diagnostics.Process.GetCurrentProcess().Handle, -1, -1);
            }
        }
        #endregion

        static Dictionary<string, bool> Txt_Used = new Dictionary<string, bool>();
        #region 生成并保存本地文件
        /// <summary>
        /// 文件自动保存
        /// </summary>
        /// <param name="_file_name">文件名称</param>
        /// <param name="path">保存路径</param>
        /// <param name="logstring">文件内容</param>
        public static void AddLgoToTXT(string _file_name, string path, string logstring)
        {
            //检查是否存在该路径
            if (!System.IO.Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }

            path = path + _file_name;
            //检查该路径下是否存在该文件
            if (!System.IO.File.Exists(path))
            {
                FileStream stream = null;
                try
                {
                    stream = System.IO.File.Create(path);
                    stream.Close();
                    stream.Dispose();
                }
                catch (Exception ex)
                {

                }
                finally
                {
                    if (stream != null)
                    {
                        stream.Close();
                        stream.Dispose();
                    }
                }

            }
            if (!Txt_Used.ContainsKey(path))
            {
                Txt_Used.Add(path, true);
            }
            else
            {
                if (Txt_Used[path])
                {
                    return;
                }
                else
                {
                    Txt_Used[path] = true;
                }
            }
            FileStream fs = null;
            try
            {
                //[1]创建文件流 文件路径 和枚举类型的文件操作类型
                fs = new FileStream(path, FileMode.Append);
                //[2]创建写入器
                StreamWriter sw = new StreamWriter(fs);
                //[3]以流的方式写入数据
                sw.Write(logstring);
                //[4]关闭写入器
                sw.Close();
                //[5]关闭文件流
                fs.Close();
                Txt_Used[path] = false;
            }
            catch (Exception ex)
            {

            }
            finally
            {
                if (fs != null)
                {
                    fs.Close();
                    fs.Dispose();
                }
            }
        }
        #endregion

        //获取当前程序运行路径
        public static string Save_Path = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase + @"数据记录\";

        #region 日志记录
        public static void Logging(string message)
        {
            AddLgoToTXT("Log.txt", Save_Path + System.DateTime.Now.ToString("yyyy_MM_dd") + @"\", System.DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + " ---- " + message + "\r\n");
        }
        #endregion

        #region 配置文件操作
        private static Configuration config = System.Configuration.ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
        /// <summary>
        /// 获取配置文件
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public static string GetAppSetting(string key)
        {
            if (ConfigurationManager.AppSettings.AllKeys.Contains(key))
            {
                string value = config.AppSettings.Settings[key].Value;
                return value;
            }
            else
            {
                return null;
            }
        }
        /// <summary>
        /// 更新配置文件信息
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        public static void UpdateAppSettings(string key, string value)
        {
            if (GetAppSetting(key) == value)   //如果写入的配置文件和之前一致 就不写入了
                return;
            if (ConfigurationManager.AppSettings.AllKeys.Contains(key))
            {
                config.AppSettings.Settings[key].Value = value;
                config.Save(ConfigurationSaveMode.Modified);
                ConfigurationManager.RefreshSection("appSettings");//刷新数据
            }
            else
            {
                Console.WriteLine("当前节点不存在!");
            }
        }
        #endregion


        #region  计算经纬度之间的距离
        /// <summary>
        /// 计算经纬度之间的距离
        /// </summary>
        /// <param name="StandJD">标定经度</param>
        /// <param name="StandWD">标定纬度</param>
        /// <param name="CurrentJD">当前经度</param>
        /// <param name="CurrentWD">当前纬度</param>
        /// <returns></returns>
        public static double GetDistanceTo(float StandJD,float StandWD,float CurrentJD,float CurrentWD)
        {
            const double R = 6371; // 地球的平均半径（千米）
            double dLat = ToRadians(CurrentWD - StandWD);
            double dLon = ToRadians(CurrentJD - StandJD);
            double a = Math.Sin(dLat / 2) * Math.Sin(dLat / 2) +
                       Math.Cos(ToRadians(StandWD)) * Math.Cos(ToRadians(CurrentWD)) *
                       Math.Sin(dLon / 2) * Math.Sin(dLon / 2);
            double c = 2 * Math.Atan2(Math.Sqrt(a), Math.Sqrt(1 - a));
            double distance = R * c;
            return distance * 1000;
        }

        private static double ToRadians(double angle)
        {
            return angle * Math.PI / 180;
        }
        #endregion
    }
}