feat: rework of argument read. Added possibility to analyze only one user.

ArgumentReader.cs

@@ -0,0 +1,38 @@
+namespace TelegramMessageCounter;
+
+public static class ArgumentReader
+{
+    public static DataRequest ReadArguments(string[] args)
+    {            
+        string? login = null;
+        string? username = null;
+        if (args.Length > 0 && args.Any(x => x == "--help"))
+        {
+            Console.WriteLine("Usage: TelegramMessageCounter --login (phone number) --user (username) <path>" +
+                              "\n login - Phone number of telegram. If argument is empty, waiting for Keyboard interrupt" +
+                              "\nuser - Username of telegram for individual stats. If argument is empty, analyzing all user history" +
+                              "\n path - Path to save results file. If argument is empty, path will be \"results.txt\"\n");
+            Environment.Exit(0);
+        }
+
+        if (args.Any(x => x == "--user"))
+        {
+            var userNameArgIndex = args.ToList().IndexOf("--user");
+            username = args[userNameArgIndex+1];
+        }
+            
+        if (args.Any(x => x == "--login" || x == "-L"))
+        {
+            var userNameArgIndex = args.ToList().IndexOf("--login");
+            if (userNameArgIndex == -1)
+            {
+                userNameArgIndex = args.ToList().IndexOf("-L");
+            }
+            login = args[userNameArgIndex+1];
+        }
+        string? path = args.Length > 1 ? args.Last() : null;
+
+        return new(login, username, (path ?? default)!);
+        
+    }
+}