begin application build overhaul

Services/AttachService.cs

@@ -0,0 +1,41 @@
+using System.Diagnostics;
+using System.Threading.Tasks;
+using UnifiedFarmLauncher.Models;
+
+namespace UnifiedFarmLauncher.Services
+{
+    public class AttachService
+    {
+        private readonly SshService _sshService;
+        private readonly WorkerControllerService _controllerService;
+
+        public AttachService(SshService sshService, WorkerControllerService controllerService)
+        {
+            _sshService = sshService;
+            _controllerService = controllerService;
+        }
+
+        public async Task AttachToWorkerAsync(WorkerConfig worker, string workerType, bool commandOnly = false, string? command = null)
+        {
+            await _controllerService.DeployAttachHelperAsync(worker);
+
+            var remoteBasePath = await _sshService.GetWorkerBasePathAsync(worker);
+            var remoteHelper = $"{remoteBasePath.Replace("\\", "/")}/attach-helper.ps1";
+
+            var paramsBlock = $"-WorkerName \"{worker.Name}\" -WorkerType \"{workerType}\"";
+            if (commandOnly)
+            {
+                paramsBlock += " -CommandOnly";
+            }
+            if (!string.IsNullOrEmpty(command))
+            {
+                paramsBlock += $" -Command \"{command}\"";
+            }
+
+            var remoteCmd = $"powershell -NoLogo -NoProfile -ExecutionPolicy Bypass -File \"{remoteHelper}\" {paramsBlock}";
+
+            _sshService.StartInteractiveSsh(worker, remoteCmd);
+        }
+    }
+}
+