# Example Request/Response Extension

### Package.json

{% hint style="warning" %}
Note: do **not** name any file `main.swift` or `main.cs`
{% endhint %}

```json
{
  "name": "positron-prompt",
  "version": "1.0.0",
  "positron": {
    "command": "prompt",
    "className": "PromptPlugin",
    "platforms": {
      "darwin": "mac/Prompt.swift",
      "win32": "win/Prompt.cs"
    }
  }
}
```

### mac/Prompt.swift

{% code lineNumbers="true" %}

```swift
import Cocoa

public class PromptPlugin {
        static func handle(windowId: Int, args: [String]) {
       
        guard let window = windows[windowId] else { return }
        guard let message = args.first else {
            printError("prompt — missing message argument")
            return
        }
        let alert = NSAlert()
        alert.messageText = message
        alert.addButton(withTitle: "OK")
        alert.addButton(withTitle: "Cancel")

        let inputField = NSTextField(frame: NSRect(x: 0, y: 0, width: 200, height: 24))
        alert.accessoryView = inputField

        if args.count > 1 {
            inputField.stringValue = args[1]
        }

        alert.beginSheetModal(for: window) { response in
            if response == .alertFirstButtonReturn {
                let userInput = inputField.stringValue
                AppDelegate.shared?.ipcClient.send(
                    IPCResponse(windowId: windowId, event: "prompt-reply-\(windowId)", data: ["input": userInput])
                )
            } else {
                AppDelegate.shared?.ipcClient.send(
                    IPCResponse(windowId: windowId, event: "prompt-reply-\(windowId)", data: ["input": ""])
                )
            }
        }
    }
}
```

{% endcode %}

### win/Prompt.cs

{% code lineNumbers="true" %}

```csharp
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Windows;

namespace PositronWindows
{
    public static class PromptPlugin
    {
        public static void Handle(int windowId, List<string> args)
        {
                    if (args.Count < 2)
                    {
                        error("prompt — expected message and defaultValue arguments");
                        break;
                    }
                    {
                        var message = args[0];
                        var defaultValue = args[1];
                        string result = Interaction.InputBox(message, "Prompt", defaultValue);
                        _ipcClient.Send(new IPCResponse
                        {
                            windowId = windowId,
                            @event = "prompt-reply-" + windowId,
                            data = new() { { "input", result } }
                        });
                    }
        }
    }
}
```

{% endcode %}


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