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

namespace PEP_Tool
{
    public static class Writer
    {
        static int errCount = 0;

        public static FileStream WaitForFile(string fullPath, FileMode mode, FileAccess access, FileShare share)
        {
            var err = false;
                FileStream fs = null;

            for (int numTries = 0; numTries < 50; numTries++)
            {
                fs = null;
                try
                {
                    if(err && errCount > 5) LogFile.WriteLine(access.ToString() + "error #" + errCount + ": " + Path.GetFileName(fullPath));
                    fs = new FileStream(fullPath, mode, access, share);

                    if (err && errCount > 5) LogFile.WriteLine(access.ToString() + " done" + ": " + Path.GetFileName(fullPath));

                    err = false;

                    errCount = 0;
                    return fs;
                }
                catch (IOException ex)
                {
                    errCount++;
                    //LogFile.WriteLine($"{Environment.MachineName}: {access.ToString()} denied: {Path.GetFileName(fullPath)}\n\nDies ist das {errCount}. vorkommen\n\n");
                    //LogFile.WriteLine(ex.ToString());
                    //LogFile.WriteLine("Message: " + ex.Message);
                    //if(ex.InnerException != null) LogFile.WriteLine("InnerException: " + ex.InnerException);
                    err = true;
                    if (fs != null)
                    {
                        fs.Dispose();
                    }
                    System.Threading.Thread.Sleep(500);
                }
                catch(Exception exc)
                {
                    //LogFile.WriteLine(Environment.MachineName + ": " + access.ToString() + " denied" + ": " + Path.GetFileName(fullPath));
                    //LogFile.WriteLine(exc.ToString());
                    //LogFile.WriteLine("Message: " + exc.Message);
                    //if (exc.InnerException != null) LogFile.WriteLine("InnerException: " + exc.InnerException);
                    err = true;
                    if (fs != null)
                    {
                        fs.Dispose();
                    }
                    System.Threading.Thread.Sleep(500);
                }

            }

            fs.Dispose();
            if (err) System.Windows.MessageBox.Show("Daten konnten nicht geschrieben werden!\nBitte erneut versuchen\n\nWenn dieser Fehler mehrmals direkt hintereinander auftritt, bitte an Marcus Bachler wenden.", "Fehler", System.Windows.MessageBoxButton.OK, System.Windows.MessageBoxImage.Warning, System.Windows.MessageBoxResult.OK);
            return null;
        }
    }
}