How I taught parents to download Turkish TV shows with one click.

Good day!
Many of us have parents who are not very friendly with technology, and we have to be friends for them. My family is watching the entire series “The Magnificent Age ”, the series of which are released once a week. It seems not so often, but Saturday after Saturday to hear “Go check if there is a series”, it became tiresome to search for distribution, launch a torrent, and so on, and I decided to shift it to the digital shoulders of the fourth .NetFramework.
What we need:
- Visual Studio 2010 or higher
- Console torrent client Aria2c .

Be careful, there is a Hindu code in some places! I warned.

The task in front of me was this: the application starts, downloads the torrent and feeds it to the console torrent client, which downloads the series to a USB flash drive (the USB flash drive is inserted into the TV).

First we need to understand what series we want to download. The series comes out in Turkey on Wednesdays, with our translation on Saturday-Sunday. The other day came the 96 series. Now the calendar is 18 week. This means that 78 should be added to the current week number if the program is launched on a weekday, and 79 if it is launched on a weekend.
It will look like this:

DateTimeFormatInfo dfi = DateTimeFormatInfo.CurrentInfo; DateTime date1 = DateTime.Now; Calendar cal = dfi.Calendar; var week = cal.GetWeekOfYear(date1, dfi.CalendarWeekRule, dfi.FirstDayOfWeek); var day = (int)cal.GetDayOfWeek(date1) == 0 ? 6 : (int)cal.GetDayOfWeek(date1) - 1; //     ,   GetDayOfWeek  0  ,     . GetWeekOfYear    ,     var epnumber = week + 79 - ((day < 5) ? 1 : 0); 

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Now that we know the series number, we can go to the tracker.
First you need to log in, for this we create a POST request for the login.php page, and give it a login / password pair.

 byte[] buffer = Encoding.ASCII.GetBytes("login_username=_&login_password=_&login=%C2%F5%EE%E4"); HttpWebRequest WebReq = (HttpWebRequest)WebRequest.Create("http://login.rutracker.org/forum/login.php");//  Post- var cc = new CookieContainer(); WebReq.CookieContainer = cc;//  WebReq.Method = "POST"; WebReq.ContentType = "application/x-www-form-urlencoded"; WebReq.ContentLength = buffer.Length; HttpWebResponse WebResp; try { Stream PostData = WebReq.GetRequestStream(); PostData.Write(buffer, 0, buffer.Length); PostData.Close(); WebResp = (HttpWebResponse)WebReq.GetResponse(); } catch (Exception e) { MessageBox.Show(" ", " ", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } 

The server, in response, spat at us with an authorization cookie, which is stored in cc. Now with this cookie you can make a search request for the series:

  var url = @"http://rutracker.org/forum/tracker.php?nm=%D0%92%D0%B5%D0%BB%D0%B8%D0%BA%D0%BE%D0%BB%D0%B5%D0%BF%D0%BD%D1%8B%D0%B9%20%D0%B2%D0%B5%D0%BA%20sub%20"+epnumber; WebReq = (HttpWebRequest)WebRequest.Create(url); WebReq.CookieContainer = cc; WebReq.Method = "GET"; WebReq.ContentType = "application/x-www-form-urlencoded"; WebResp = (HttpWebResponse)WebReq.GetResponse(); string result; Encoding responseEncoding = Encoding.GetEncoding(WebResp.CharacterSet); try { using (StreamReader sr = new StreamReader(WebResp.GetResponseStream(), responseEncoding)) { result = sr.ReadToEnd(); } } catch (Exception e) { MessageBox.Show(" ", " ", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } 

A search page with parsim for the presence of links to torrent files of the form dl.rutracker.org/forum/dl.php?12345 :

  string pattern = @"http://dl.rutracker.org/forum/dl.php\?t=\d+"; Regex regex = new Regex(pattern); Match match = regex.Match(result); if (match.Length == 0) { MessageBox.Show("    !", "", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } else AutoClosingMessageBox.Show("  !  .", "Caption", 3000); 

Torrent file found, save it to your hard drive:

  try { WebReq = (HttpWebRequest)WebRequest.Create(match.ToString()); WebReq.CookieContainer = cc; WebReq.AllowAutoRedirect = false; WebReq.Method = "POST"; WebReq.Referer = url; WebReq.ContentType = "application/x-www-form-urlencoded"; /*   */ Stream ReceiveStream = WebReq.GetResponse().GetResponseStream(); string filename = @"C:\123.torrent"; byte[] buffer1 = new byte[1024]; FileStream outFile = new FileStream(filename, FileMode.Create); int bytesRead; while ((bytesRead = ReceiveStream.Read(buffer1, 0, buffer.Length)) != 0) outFile.Write(buffer1, 0, bytesRead); outFile.Close(); ReceiveStream.Close(); } catch (Exception e) { MessageBox.Show("   -!", "", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } 

Now we check whether hapless relatives have forgotten to insert a flash drive, and whether there is enough space on it:

 string letter = ""; foreach (DriveInfo i in System.IO.DriveInfo.GetDrives()) { try { if (i.DriveType.ToString() == "Removable" && i.ToString() != "A:\\") { if (i.TotalFreeSpace < 3000000000) { MessageBox.Show("   ,  3!", "", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } letter = String.Copy(i.ToString()); break; } //Console.WriteLine(i.DriveType); } catch (Exception E) { return; } } if (letter == "") { MessageBox.Show(" !", "", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } 

Finally, everything is ready for the jump, you can proceed!

  string par = @"--seed-time=0 -d " + letter + " --select-file="+(epnumber-3)+ @" ""C:\123.torrent"" "; //--seed-time=0 -    ,  .      ,    . //-d -          //--select-file -  ,   .     ,     3. Process P = Process.Start(@"C:\aria2-1.17.0-win-32bit-build1\aria2-1.17.0-win-32bit-build1\aria2c.exe", par); P.WaitForExit(); int result1 = P.ExitCode; Console.WriteLine(result1); if (result1 == 0) { MessageBox.Show(" !   !", "", MessageBoxButtons.OK, MessageBoxIcon.Information); } else { MessageBox.Show(" !", "", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); } 

All series downloaded and waiting for viewing.
The full text of the script at http://pastebin.com/8L03vkJg .
Take care of your parents.

PS Yes, it is clear that in Per / PHP / Python / ... you can reduce the number of lines several times. The code is written for the purpose of self-education.