updated configuration script

Author: jungkumseok

src/OneOS-Core/Program.cs

@@ -145,7 +145,7 @@ files including the configuration file. If the configuration file does
                     // if entry address is not given, pick from one of the peers
                     var config = Configuration.LoadConfig(mountPath);
                     var random = new Random();
-                    var peerAddress = arguments.Count > 1 ? IPEndPoint.Parse(arguments[1]) : config.Peers.Values.ToList()[random.Next(0, config.Peers.Count)];
+                    var peerAddress = arguments.Count > 1 ? IPEndPoint.Parse(arguments[1]) : (config.Peers.Count > 0 ? config.Peers.Values.ToList()[random.Next(0, config.Peers.Count)] : IPEndPoint.Parse($"127.0.0.1:{config.Port}"));
 
                     Console.WriteLine($"Starting OneOS Terminal");
                     var terminal = new Terminal(peerAddress);

src/OneOS/Runtime/Configuration.cs

@@ -90,6 +90,13 @@ public static void CreateOrUpdateConfig(string mountPath = null)
         {
             if (mountPath == null) mountPath = OneOSPath;
 
+            // look for home directory
+            if (!Directory.Exists(mountPath))
+            {
+                Console.WriteLine($"{mountPath} directory not found. Creating ...");
+                Directory.CreateDirectory(mountPath);
+            };
+
             string configPath = Path.Combine(mountPath, "config.json");
 
             var json = JObject.Parse("{}");
@@ -335,6 +342,26 @@ static JObject RunInteractiveConfigSetup(string mountPath = null, JObject json =
                 vmAgents.Add(vmConfig);
             }
 
+            // io drivers
+            if (!json.ContainsKey("io")) json["io"] = JArray.Parse("[]");
+
+            JArray ioAgents = (JArray)json["io"];
+
+            Console.WriteLine($"Current list of IO Agents - {ioAgents.Count} agents:\n{string.Join("\n", ioAgents.Select(item => "  - " + ((JObject)item)["name"].ToObject<string>()))}");
+
+            while (Ask("Add an IO Agent? (y/n)") == "y")
+            {
+                string ioName = Ask("IO name (will be used in the public URI of the VM agent - e.g.: ffmpeg-1): ");
+                string ioDriver = Ask("IO driver (e.g.: ffmpeg): ");
+
+                var ioConfig = new JObject();
+                ioConfig["name"] = ioName;
+                ioConfig["driver"] = ioDriver;
+                ioConfig["args"] = new JArray();
+
+                ioAgents.Add(ioConfig);
+            }
+
             // cpu allocation
             if (!json.ContainsKey("cores")) json["cores"] = JArray.Parse("[ 0, 0 ]");