# Terminal Messenger

A simple, colorful terminal-based messenger application written in Go that connects to a remote messaging endpoint.

## Features

- 🎨 **Colorized output** - Blue for your input, green for assistant responses
- ⌨️ **Input history** - Navigate previous messages with arrow keys
- 💬 **Conversation context** - Maintains conversation continuity across messages
- 🚀 **Simple and fast** - Minimal setup, quick startup
- 📝 **Line editing** - Full cursor movement and text editing support

## Prerequisites

- Go 1.16 or higher
- Internet connection

## Installation

1. **Clone or download the project**

2. **Initialize Go module**

   ```bash
   go mod init messenger
   ```

3. **Install dependencies**

   ```bash
   go get github.com/chzyer/readline
   ```

4. **Build the application (optional)**
   ```bash
   go build -o messenger main.go
   ```

## Usage

### Running the application

**Using go run:**

```bash
go run main.go
```

**Or if you built the binary:**

```bash
./messenger
```

### Getting started

1. When prompted, enter a model name (or press Enter for "default")
2. Start typing your messages
3. The assistant will respond to each message
4. Use arrow keys to navigate through your input history
5. Type `quit` or `exit` to end the session

### Keyboard shortcuts

- **↑ (Up arrow)** - Navigate to previous input
- **↓ (Down arrow)** - Navigate to next input
- **←/→ (Left/Right arrows)** - Move cursor within current input
- **Ctrl+A** - Jump to beginning of line
- **Ctrl+E** - Jump to end of line
- **Ctrl+C** - Interrupt/exit application

## Configuration

The application connects to:

```
https://router.ivastudio.verint.live/ProxyScript/run/67bca862210071627d32ef12/current/basic_messenger
```

To change the endpoint, modify the `apiURL` constant in `main.go`.

### Request format

The application sends POST requests with the following JSON structure:

```json
{
  "input": "your message here",
  "model": "model name",
  "previous_response_id": "previous response ID for context",
  "metadata": {
    "channel": "text"
  }
}
```

### Response format

Expected response structure:

```json
{
  "id": "response-id",
  "object": "response",
  "created_at": 1234567890,
  "status": "completed",
  "model": "Model Name",
  "output": [
    {
      "type": "message",
      "id": "message-id",
      "role": "assistant",
      "content": [
        {
          "type": "output_text",
          "text": "Assistant response here",
          "annotations": []
        }
      ]
    }
  ]
}
```

## Project Structure

```
.
├── main.go              # Main application file
├── go.mod               # Go module file
└── README.md            # This file
```

## Troubleshooting

### Connection errors

If you encounter connection errors, check:

- Your internet connection
- The endpoint URL is accessible
- Firewall settings aren't blocking the connection

### Module errors

If you get "module not found" errors:

```bash
go mod tidy
```

### History file permissions

The app creates a history file at `/tmp/messenger_history.tmp`. If you encounter permission errors, ensure you have write access to `/tmp/`.

## Dependencies

- [github.com/chzyer/readline](https://github.com/chzyer/readline) - For input history and line editing

## License

This project is provided as-is for educational and development purposes.

## Contributing

Feel free to submit issues, fork the repository, and create pull requests for any improvements.