using System;
using System.IO;
using System.Text;
using Dongke.WinForm.Utilities;

namespace PCLCommunication
{
    /// <summary>
    /// 日志输出
    /// </summary>
    public static class LogOut
    {
        public static string LogDirectory = ApplicationInformation.StartupDirectory + "Log\\";
        public static string Prefix_Name = null;
        public static int File_Exist_Days = 30;
        public static int File_Max_Size = 10;// 10m

        private static object lock_object = new object();

        /// <summary>
        /// 异常日志
        /// </summary>
        /// <param name="moduleName"></param>
        /// <param name="ex"></param>
        /// <param name="message"></param>
        public static void Error(string moduleName, Exception ex, string message = null)
        {
            if (ex == null && message == null)
            {
                return;
            }

            lock (lock_object)
            {
                string pp = LogDirectory + "Error\\";
                if (!string.IsNullOrWhiteSpace(moduleName))
                {
                    pp += moduleName + "\\";
                }
                if (!Directory.Exists(pp))
                {
                    Directory.CreateDirectory(pp);
                }
                string path = pp + "error_" + Prefix_Name + "_" + DateTime.Now.ToString("yyyy-MM-dd") + ".log";

                DeleteFiles(pp);
                BackFile(path);

                StringBuilder db = new StringBuilder("-------------------------------------------------------------------------");
                db.AppendLine();
                db.AppendLine("[ERROR] " + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.ffffff"));

                System.Diagnostics.StackTrace ss = new System.Diagnostics.StackTrace(true);
                System.Reflection.MethodBase mb = ss.GetFrame(1).GetMethod();

                ////取得父方法命名空间
                //db.AppendLine(mb.DeclaringType.Namespace);
                ////取得父方法类名    
                //db.AppendLine(mb.DeclaringType.Name);
                ////取得父方法类全名    
                //db.AppendLine(mb.DeclaringType.FullName);
                ////取得父方法名    
                //db.AppendLine(mb.Name);
                db.AppendLine(mb.DeclaringType.ToString() + "[" + mb.ToString() + "]");

                if (message != null)
                {
                    db.Append("Message : ");
                    db.AppendLine(message);
                }
                if (ex != null)
                {
                    db.AppendLine("Exception : ");
                    db.AppendLine(ex.Message);
                }
                File.AppendAllText(path, db.ToString());
            }
        }

        /// <summary>
        /// 调试日志
        /// </summary>
        /// <param name="moduleName"></param>
        /// <param name="ex"></param>
        /// <param name="message"></param>
        public static void Debug(string moduleName, string message)
        {
            if (message == null)
            {
                return;
            }
            lock (lock_object)
            {
                string pp = LogDirectory + "Debug\\";
                if (!string.IsNullOrWhiteSpace(moduleName))
                {
                    pp += moduleName + "\\";
                }
                if (!Directory.Exists(pp))
                {
                    Directory.CreateDirectory(pp);
                }
                string path = pp + "debug_" + Prefix_Name + "_" + DateTime.Now.ToString("yyyy-MM-dd") + ".log";

                DeleteFiles(pp);
                BackFile(path);

                StringBuilder db = new StringBuilder("-------------------------------------------------------------------------");
                db.AppendLine();
                db.AppendLine("[DEBUG] " + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.ffffff"));

                System.Diagnostics.StackTrace ss = new System.Diagnostics.StackTrace(true);
                System.Reflection.MethodBase mb = ss.GetFrame(1).GetMethod();

                ////取得父方法命名空间
                //db.AppendLine(mb.DeclaringType.Namespace);
                ////取得父方法类名    
                //db.AppendLine(mb.DeclaringType.Name);
                ////取得父方法类全名    
                //db.AppendLine(mb.DeclaringType.FullName);
                ////取得父方法名    
                //db.AppendLine(mb.Name);
                db.AppendLine(mb.DeclaringType.ToString() + "[" + mb.ToString() + "]");

                if (message != null)
                {
                    db.Append("Message : ");
                    db.AppendLine(message);
                }

                File.AppendAllText(path, db.ToString());
            }
        }

        /// <summary>
        /// 调试日志
        /// </summary>
        /// <param name="moduleName"></param>
        /// <param name="ex"></param>
        /// <param name="message"></param>
        public static void Info(string moduleName, string message)
        {
            if (message == null)
            {
                return;
            }
            lock (lock_object)
            {
                string pp = LogDirectory + "Info\\";
                if (!string.IsNullOrWhiteSpace(moduleName))
                {
                    pp += moduleName + "\\";
                }
                if (!Directory.Exists(pp))
                {
                    Directory.CreateDirectory(pp);
                }
                string path = pp + "info_" + Prefix_Name + "_" + DateTime.Now.ToString("yyyy-MM-dd") + ".log";

                DeleteFiles(pp);
                BackFile(path);

                StringBuilder db = new StringBuilder("-------------------------------------------------------------------------");
                db.AppendLine();
                db.AppendLine("[INFO] " + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.ffffff"));

                System.Diagnostics.StackTrace ss = new System.Diagnostics.StackTrace(true);
                System.Reflection.MethodBase mb = ss.GetFrame(1).GetMethod();

                ////取得父方法命名空间
                //db.AppendLine(mb.DeclaringType.Namespace);
                ////取得父方法类名    
                //db.AppendLine(mb.DeclaringType.Name);
                ////取得父方法类全名    
                //db.AppendLine(mb.DeclaringType.FullName);
                ////取得父方法名    
                //db.AppendLine(mb.Name);
                db.AppendLine(mb.DeclaringType.ToString() + "[" + mb.ToString() + "]");

                if (message != null)
                {
                    db.Append("Message : ");
                    db.AppendLine(message);
                }

                File.AppendAllText(path, db.ToString());
            }
        }

        private static void BackFile(string fName)
        {
            try
            {
                if (File.Exists(fName))
                {
                    FileInfo fi = new FileInfo(fName);
                    double l = (double)fi.Length / 1024 / 1024;
                    if (l > File_Max_Size)
                    {
                        fName = fName.Remove(fName.Length - 4) + "_" + DateTime.Now.ToString("HHmmss") + ".log";
                        fi.MoveTo(fName);
                    }
                }
            }
            catch
            {
            }
        }

        private static void DeleteFiles(string path)
        {
            try
            {
                string[] dirs = Directory.GetFiles(path);
                if (dirs != null && dirs.Length > 0)
                {
                    DateTime dateNow = DateTime.Now.Date.AddDays(0 - File_Exist_Days);
                    foreach (string item in dirs)
                    {
                        if (File.GetCreationTime(item) < dateNow)
                        {
                            File.Delete(item);
                        }
                    }
                }
            }
            catch
            {
            }
        }
    }
}