- Improve some messages of failed commands

- Add `remove host` command

HyperbolicDownloader/Networking/HostsManager.cs

@@ -16,7 +16,7 @@ internal class HostsManager
     {
         foreach (NetworkSocket host in hosts)
         {
-            if (!this.hosts.Any(x => x.IPAddress == host.IPAddress && x.Port == host.Port))
+            if (!Contains(host))
             {
                 this.hosts.Add(host);
             }
@@ -27,7 +27,7 @@ internal class HostsManager
 
     public void Add(NetworkSocket host)
     {
-        if (!hosts.Any(x => x.IPAddress == host.IPAddress && x.Port == host.Port))
+        if (!Contains(host))
         {
             hosts.Add(host);
         }
@@ -43,6 +43,11 @@ internal class HostsManager
         SaveHosts();
     }
 
+    public bool Contains(NetworkSocket host)
+    {
+        return hosts.Any(x => x.IPAddress == host.IPAddress && x.Port == host.Port);
+    }
+
     public int CheckHostsActivity()
     {
         List<NetworkSocket> hostsToRemove = new List<NetworkSocket>();

HyperbolicDownloader/UserInterface/Commands/FileCommands.cs

@@ -39,7 +39,7 @@ internal class FileCommands
 
         if (filesManager.TryRemove(hash))
         {
-            ConsoleExt.WriteLine($"Removed file successfully!", ConsoleColor.Green);
+            ConsoleExt.WriteLine($"Successfully removed file!", ConsoleColor.Green);
         }
         else
         {

HyperbolicDownloader/UserInterface/Commands/HostCommands.cs

@@ -39,7 +39,15 @@ internal class HostCommands
     public void ListHosts(string _)
     {
         int index = 0;
-        foreach (NetworkSocket host in hostsManager.ToList())
+        List<NetworkSocket> hosts = hostsManager.ToList();
+
+        if (hosts.Count == 0)
+        {
+            ConsoleExt.WriteLine("No known hosts", ConsoleColor.DarkYellow);
+            return;
+        }
+
+        foreach (NetworkSocket host in hosts)
         {
             index++;
             Console.WriteLine($"{index}) {host.IPAddress}:{host.Port}");
@@ -49,6 +57,44 @@ internal class HostCommands
         Console.CursorTop--;
     }
 
+    public void RemoveHost(string args)
+    {
+        string[] parts = args.Split(":");
+
+        if (parts.Length != 2)
+        {
+            ConsoleExt.WriteLine("Invalid format! Use this format: (xxx.xxx.xxx.xxx:yyyy)", ConsoleColor.Red);
+            return;
+        }
+
+        string ipAddressInput = parts[0];
+        string portInput = parts[1];
+
+        _ = int.TryParse(portInput, out int port);
+        if (port < 1000 || port >= 6000)
+        {
+            ConsoleExt.WriteLine("Invalid port number!", ConsoleColor.Red);
+            return;
+        }
+
+        if (!IPAddress.TryParse(ipAddressInput, out IPAddress? ipAddress))
+        {
+            ConsoleExt.WriteLine("Invalid IP address!", ConsoleColor.Red);
+            return;
+        }
+
+        NetworkSocket hostToRemove = new NetworkSocket(ipAddress.ToString(), port, DateTime.MinValue);
+
+        if (!hostsManager.Contains(hostToRemove))
+        {
+            ConsoleExt.WriteLine("Host not in list", ConsoleColor.Red);
+            return;
+        }
+
+        hostsManager.Remove(new NetworkSocket(ipAddress.ToString(), port, DateTime.MinValue), true);
+        ConsoleExt.WriteLine($"Successfully Removed host!", ConsoleColor.Green);
+    }
+
     public void AddHost(string args)
     {
         string[] parts = args.Split(":");

HyperbolicDownloader/UserInterface/InputHandler.cs

@@ -37,7 +37,9 @@ internal class InputHandler
         addCommand.Register(hostCommands.AddHost, "host");
         addCommand.Register(fileCommands.AddFile, "file");
 
-        commander.Register(fileCommands.RemoveFile, "remove", "rm");
+        Command removeCommand = commander.Register(fileCommands.RemoveFile, "remove", "rm");
+        removeCommand.Register(hostCommands.RemoveHost, "host");
+        removeCommand.Register(fileCommands.RemoveFile, "file");
 
         Command listCommand = commander.Register(fileCommands.ListFiles, "list", "ls");
         listCommand.Register(fileCommands.ListFiles, "files");
@@ -57,11 +59,18 @@ internal class InputHandler
             string input = Console.ReadLine()?.Trim() ?? string.Empty;
 
             Console.CursorVisible = false;
+            try
+            {
                 if (!commander.Execute(input))
                 {
                     ConsoleExt.WriteLine("Unknown command!", ConsoleColor.Red);
                 }
             }
+            catch (Exception ex)
+            {
+                ConsoleExt.WriteLine($"An unexpected error occurred! {ex}", ConsoleColor.Red);
+            }
+        }
     }
 
     private void Exit(string _)