using System;
using System.Collections.Generic;
using System.Windows.Forms;
using Volian.Base.Library;

namespace VEPROMS
{
	static class Program
	{
		private static readonly log4net.ILog _log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
		[System.Runtime.InteropServices.DllImport("KERNEL32.DLL")]
		static extern bool AttachConsole(int dwProcessId);
		private const int ATTACH_PARENT_PROCESS = -1;		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main()
		{
			Application.EnableVisualStyles();
			Application.SetCompatibleTextRenderingDefault(false);
			// Attach to the parent process via AttachConsole SDK call
			AttachConsole(ATTACH_PARENT_PROCESS);
			if (System.Diagnostics.Process.GetCurrentProcess().ProcessName.ToLower().EndsWith("vshost"))
			{
				Application.Run(_myForm = new frmVEPROMS());
			}
			else
			{
				Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(Application_ThreadException);
				Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
				AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
				Application.Run(_myForm = new frmVEPROMS());
			}
		}
		static frmVEPROMS _myForm = null;		// B2019-098: prevent looping between error & exit dialog
		static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
		{
			_log.Error("PROMS2010 Main UnhandledException", e.ExceptionObject as Exception);
			Application.Exit();
		}

		static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)
		{
			// Roaming folders copied to the server when the user logs off the client computer in a Domain environment.
			// Windows uses the Local folder for application data that does not roam with the user. Usually this data is 
			//   either machine specific or too large to roam. The AppData\Local folder in Windows Vista is the same as 
			//   the Documents and Settings\username\Local Settings\Application Data folder in Windows XP.
			// Windows uses the Roaming folder for application specific data, such as custom dictionaries, which are 
			//   machine independent and should roam with the user profile. The AppData\Roaming folder in Windows Vista 
			//   is the same as the Documents and Settings\username\Application Data folder in Windows XP.
			// SpecialFolder.LocalApplicationData returns \Local & SpecialFolder.ApplicationData returns \Roaming 
			//   for example - the SpecialFolder:
			//		LocalApplicationData: C:\Users\Kathy.VOLIAN0\AppData\Local
			//		ApplicationData: C:\Users\Kathy.VOLIAN0\AppData\Roaming
			//		CommonApplicationData: C:\ProgramData
			//		MyDocuments: C:\Users\Kathy.VOLIAN0\Documents

			// The error log is created using log4Net.  The variables that were tested were:
			//	<param name="File" value="${USERPROFILE}/My Documents/VEPROMS/ErrorLog.txt" /> - puts in document directory
			//  <param name="File" value="${APPDATA}/Volian/Proms2010/ErrorLog.txt" />  - puts in roaming directory
			//  <param name="File" value="${LOCALAPPDATA}/Temp/VEPROMS/ErrorLog.txt" />  - Vista - puts in local directory. !Exist for XP

			// Decided to use 'documents directory' for error log file so that it is easily accessible by user:
			string dpath = frmVEPROMS.ErrorLogFileName;
			if (dpath == null || dpath == "")
				dpath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + @"\VEPROMS\ErrorLog.txt";
			_log.Error("Proms Main ThreadException", e.Exception);
			string msg = string.Format("An error has occurred so the program will terminate. Please send the error log, {0}, to Volian.",dpath);
			if(!System.Environment.CommandLine.Contains("/P="))
				MessageBox.Show(msg);
			_myForm.ClosingWithError = true;
			Application.Exit();
		}
	}
}