Implement EditTodoCommand to open todo.txt in VS Code and update command line arguments

Author: rprouse

.vscode/launch.json

@@ -0,0 +1,14 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "C#: todo Debug",
+      "type": "dotnet",
+      "request": "launch",
+      "projectPath": "${workspaceFolder}/src/todo/todo.csproj"
+    }
+  ]
+}

src/todo.application/Commands/EditTodoCommand.cs

@@ -0,0 +1,42 @@
+using Alteridem.Todo.Domain.Interfaces;
+using MediatR;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Alteridem.Todo.Application.Commands
+{
+    public class EditTodoCommand : IRequest<Unit>
+    {
+        // No parameters for this command
+    }
+
+    public class EditTodoCommandHandler : IRequestHandler<EditTodoCommand, Unit>
+    {
+        private readonly ITaskConfiguration _configuration;
+
+        public EditTodoCommandHandler(ITaskConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public Task<Unit> Handle(EditTodoCommand request, CancellationToken cancellationToken)
+        {
+            // Step 1: Get the directory that contains todo.txt from the configuration
+            var todoDirectory = _configuration.TodoDirectory;
+
+            // Step 2: Launch a process 'code' with the todoDirectory as a parameter
+            var processStartInfo = new System.Diagnostics.ProcessStartInfo
+            {
+                FileName = "code",
+                Arguments = $"\"{todoDirectory}\"",
+                UseShellExecute = true,
+                CreateNoWindow = true,
+                WorkingDirectory = $"\"{todoDirectory}\"",
+            };
+            System.Diagnostics.Process.Start(processStartInfo);
+
+            // Stub implementation for editing logic
+            return Task.FromResult(Unit.Value);
+        }
+    }
+}

src/todo/Program.cs

@@ -2,7 +2,7 @@ namespace Alteridem.Todo;
 
 class Program
 {
-    static void Main()
+    static void Main(string[] args)
     {
         var app = new TodoApplication();
         app.Run();

src/todo/Properties/launchSettings.json

@@ -2,7 +2,7 @@
   "profiles": {
     "todo": {
       "commandName": "Project",
-      "commandLineArgs": "ls"
+      "commandLineArgs": "edit"
     }
   }
 }

src/todo/TodoApplication.cs

@@ -307,8 +307,9 @@ private async Task AddPriority(int item, char priority)
 
     private async Task Edit()
     {
-        // TODO: Implement logic to open the folder containing the todo.txt file in VS Code
-        Console.WriteLine("Opening folder in VS Code...");
+        Console.WriteLine("Opening todo.txt in VS Code...");
+        var command = new EditTodoCommand();
+        await Mediator.Send(command);
     }
 
     private RootCommand CreateCommands()