///
/// Copyright (c) 2015-2016 Sensus Metering Systems
///
using System;
using System.IO;
using System.Collections.Generic;
using System.Windows.Forms;
using log4net;
using Config.Entities;
using ResultsBrowser.Forms;
using ResultsBrowser.Resources;

namespace ResultsBrowser
{
	public class Program
	{
        static ILog log;                        /// log4net

        /// Program information
        public static string Version;			/// version string
        public static DateTime BuildDateTime;	/// date and time of program build

        /// Local settings
        public static string ExecutableDirectory;
        public static string ConfigDirectory;
        public static string LogDirectory;
        public static string LocalSettingsFileName;
        public static string LocalSettingsBackupName;
        public static LocalSettings LocalSettings;

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
        static void Main(string[] args)
		{
            /// Program version string
            System.Reflection.Assembly thisAssembly = System.Reflection.Assembly.GetExecutingAssembly();
            Version ver = thisAssembly.GetName().Version;
            Version = string.Format("{0}.{1}.{2}", ver.Major, ver.Minor, ver.Build);
            BuildDateTime = new System.IO.FileInfo(thisAssembly.Location).LastWriteTime;

            /// Local program configuration directory including the trailing backslash
            ExecutableDirectory = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);
#if false
            /// Config directory is a sibling directory of the executable directory 
            ConfigDirectory = Path.Combine(ExecutableDirectory, "..", string.Format("Cfg{0}", (args.Length >= 1) ? args[0] : string.Empty));
            LogDirectory = Path.Combine(ExecutableDirectory, "..\\Log\\");
#else
            /// Config directory is a directory in 'C:\Users\username\AppData\Local' folder
            ConfigDirectory = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
                                           string.Format("ResultsBrowser{0}", (args.Length >= 1) ? args[0] : string.Empty));
            LogDirectory = "C:\\Temp\\ResultsBrowserLog\\";
#endif
            LocalSettingsFileName = Path.Combine(ConfigDirectory, "config.xml");
            LocalSettingsBackupName = Path.Combine(ConfigDirectory, "config.backup.xml");

            /// Configue and start logging
            log4net.Config.XmlConfigurator.Configure(new System.IO.FileInfo(ConfigDirectory + "log4netConfig.xml"));
            log = LogManager.GetLogger(typeof(Program));
            log.Fatal("------------------------------------------------------------------------------------------------");
            log.Fatal("started");
            
            ///
			/// Load the local settings
			///
			LocalSettings = LocalSettings.Load(Program.LocalSettingsFileName);
			if (LocalSettings == null)
			{
				/// Loading local seetings from regular config file failed. Use the backup
				LocalSettings = LocalSettings.Load(Program.LocalSettingsBackupName);
				if (LocalSettings == null)
				{
					MessageBox.Show(Strings.No_program_settings_found + Strings.Using_default_settings,
									string.Empty,
									MessageBoxButtons.OK,
									MessageBoxIcon.Information);

					/// Create new default settings and save them
					LocalSettings = new LocalSettings();
                    Directory.CreateDirectory(ConfigDirectory);
                    LocalSettings.Save();
				}
				else
				{
					LocalSettings.Save();	/// Save the settings to overwrite the wrong file
				}
			}
			else
			{
				/// Loading local seetings from the regular config file was successful. Update the backup
				File.Copy(Program.LocalSettingsFileName, Program.LocalSettingsBackupName, true);
			}

			try
			{
                string culture = (LocalSettings.Language != null) ? LocalSettings.Language.Replace('_', '-') : "EN";
				System.Threading.Thread.CurrentThread.CurrentUICulture = new System.Globalization.CultureInfo(culture);
			}
			catch (Exception e)
			{
				string msg = e.Message;
				MessageBox.Show(Strings.Selected_language_not_supported + Environment.NewLine + Strings.Using_English,
								Strings.Warning,
								MessageBoxButtons.OK,
								MessageBoxIcon.Asterisk);
				System.Threading.Thread.CurrentThread.CurrentUICulture =
					new System.Globalization.CultureInfo("en");
			}


			/// This belongs to Application.Run(new MainWnd()) ...
			/// and should be executed before opening 'loginDlg'
			Application.EnableVisualStyles();
			Application.SetCompatibleTextRenderingDefault(false);


			try
			{
				/// Open the main application window
				log.Info("Creating and opening the main window");
                Application.Run(new ResultsBrowserWnd(args));
				log.Info("The main window was closed");
			}
			catch (Exception e)
			{
				LogException(log, "Exception in Application.Run(new ResultsBrowserWnd(args))", e);
			}
			finally
			{
				/// Save local settings
				LocalSettings.Save();
			}

			/// Close Fluent NHibernate
			/// Todo

			log.Info("Exiting application.");
		}

		static void MyHandler(object sender, UnhandledExceptionEventArgs args)
		{
			LogException(log, "Unhandled exception", (Exception)args.ExceptionObject);
		}

		static void LogException(ILog log, string description, Exception e)
		{
			log.FatalFormat("---------------( {0} )---------------", description);
			log.FatalFormat("Message      : {0}", e.Message);
			if (e.InnerException != null)
			{
				log.FatalFormat("InnerMessage : {0}", e.InnerException.Message);
			}
			log.FatalFormat("StackTrace   : {0}{1}", Environment.NewLine, e.StackTrace);
			log.Fatal("--------------------------------------");
		}
	}
}