remove node detection from BmsTunnel, did more harm than good.

csharp/App/BmsTunnel/BatteryTty.cs

@@ -7,39 +7,26 @@ namespace InnovEnergy.App.BmsTunnel;
 
 using Nodes = IReadOnlyList<Byte>;
 
-public readonly struct BatteryConnection
+public static class BatteryTty
 {
-    public String Tty   { get; }
+    const String DevDir = "/dev";
-    public Nodes  Nodes { get; }
     
-    private BatteryConnection(String tty, Nodes nodes)
+    public static async Task<String?> GetTty()
-    {
-        Tty   = tty;
-        Nodes = nodes;
-    }
-    
-    private BatteryConnection(String tty, params Byte[] nodes) : this(tty, (Nodes) nodes)
-    {
-    }
-
-
-    public static async Task<BatteryConnection?> Connect(SshHost? host = null)
     {
         Console.WriteLine("searching battery connection...");
 
-        return await GetConnectionFromDBus(host) 
+        return await GetTtyFromDBus() 
-            ?? await GetConnectionFromDevTty(host);
+            ?? await GetTtyFromDev();
     }
 
-    private static async Task<BatteryConnection?> GetConnectionFromDevTty(SshHost? host)
+    private static async Task<String?> GetTtyFromDev()
     {
-        var fs = FileSystem.OnHost(host);
+        var ttys = await FileSystem
-
+                        .Local
-        var ttys = await fs.GetFiles("/dev", FileType.CharacterDevice);
+                        .GetFiles(DevDir, FileType.CharacterDevice);
 
         var candidateTtys = ttys
-                           .Where(f => f.Contains("ttyUSB"))
+                           .Where(f => f.StartsWith(DevDir + "/ttyUSB"))
-                           .Select(t => t.Split("/").LastOrDefault())
                            .NotNull()
                            .ToList();
 
@@ -49,17 +36,15 @@ public readonly struct BatteryConnection
             return null;
         }
 
-        var userSelectedTty = "Select TTY:".ChooseFrom(candidateTtys);
+        if (candidateTtys.Count == 1)
+            return candidateTtys[0];
 
-        return userSelectedTty != null
+        return "Select TTY:".ChooseFrom(candidateTtys);
-             ? new BatteryConnection(userSelectedTty)
-             : null;
     }
 
-    private static async Task<BatteryConnection?> GetConnectionFromDBus(SshHost? host)
+    private static async Task<String?> GetTtyFromDBus()
     {
         var tty = await LsDBus
-                       .OnHost(host)
                        .ExecuteBufferedAsync()
                        .Select(ParseBatteryTty);
 
@@ -68,16 +53,14 @@ public readonly struct BatteryConnection
         
         Console.WriteLine("found battery on DBus");
 
-        var availableNodes = await GetNodes(tty, host);
+        return $"{DevDir}/{tty}";
-        return new BatteryConnection(tty, availableNodes);
     }
 
-    private static CommandTask<Nodes> GetNodes(String tty, SshHost? host = null)
+    private static CommandTask<Nodes> GetNodes(String tty)
     {
         const String defaultArgs = "--system --print-reply --type=method_call / com.victronenergy.BusItem.GetValue";
         
         return DBusSend
-              .OnHost(host)
               .AppendArgument($"--dest=com.victronenergy.battery.{tty}")  
               .AppendArgument(defaultArgs)  
               .ExecuteBufferedAsync()

csharp/App/BmsTunnel/Program.cs

@@ -13,42 +13,20 @@ public static class Program
 
     public static async Task<Int32> Main(String[] args)
     {
-        var hostName = args.FirstOrDefault();
+        var tty = await BatteryTty.GetTty();
 
-        BatteryConnection? connection = hostName is not null ? await ConnectToBms(hostName, new SshHost(hostName)): new BatteryConnection();
+        if (tty is null)
-
-        if (connection is null)
             return 2;
         
-        // connection.Tty;
         Console.WriteLine("\nstarting BMS tunnel\n");
         
-        var path = $"/dev/{connection.Value.Tty}";
+        using var tunnel = new BmsTunnel(tty, 2);
-        // if (hostName != null) 
-        //     path = $"root@{hostName}:" + path;
-        //
-        // var node = connection.Nodes.Any() 
-        //          ? connection.Nodes.First() 
-        //          : DefaultNode;
-        //
-        
-        // TODO: Fixme
-        // var path = "";
-        Byte node = 2;
-        var nodes = new Byte[] { 1, 2, 3 };
-        
-        // TODO: Fixme
-        
-        using var tunnel = new BmsTunnel(path, node, hostName is not null ? new SshHost(hostName): null);
 
         ExplainNode();
-        ExplainNodes();
         ExplainExit();
         
         Console.WriteLine("");
 
-        ListNodes();
-
         while (true)
         {
             Console.WriteLine("");
@@ -73,14 +51,11 @@ public static class Program
         
         Boolean ProcessLocalCommand(String cmd)
         {
-            cmd = cmd.TrimStart('/').Trim();
+            cmd = cmd.TrimStart('/').Trim().ToUpper();
             
             if (cmd == "EXIT") 
                 return true;
-
+            if (cmd.StartsWith("NODE ")) 
-            if (cmd == "NODES") 
-                ListNodes();
-            else if (cmd.StartsWith("NODE ")) 
                 ChangeNode(cmd);
             else 
                 Console.WriteLine("unrecognized command");
@@ -90,14 +65,6 @@ public static class Program
 
         return 0;
         
-        void ListNodes()
-        {
-            if(nodes.Length >= 250)
-                return;
-            
-            nodes.Aggregate("available nodes:", (a, b) => $"{a} {b}")
-                 .Apply(Console.WriteLine);
-        }
 
         void ChangeNode(String cmd)
         {
@@ -109,32 +76,10 @@ public static class Program
                 return;
             }
 
-            if (!nodes.Contains(newNode))
-            {
-                Console.WriteLine(newNode + " is not available");
-                ListNodes();
-                return;
-            }
-
             tunnel.Node = newNode;
         }
     }
 
-    private static async Task<BatteryConnection?> ConnectToBms(String? hostName, SshHost host)
-    {
-
-        if (await host.Ping())
-            return await BatteryConnection.Connect(host);
-        
-        $"Cannot connect to {hostName}".WriteLine(ConsoleColor.Red);
-
-        return null;
-    }
-
-
     private static void ExplainExit()  => Console.WriteLine("/exit       exit bms cli");
-    private static void ExplainNodes() => Console.WriteLine("/nodes      list available nodes");
     private static void ExplainNode()  => Console.WriteLine("/node <nb>  change to node number <nb>");
-
-
 }