# No as a Service (NaaS)

A simple Sinatra-based web service that provides creative "no" responses in both HTML and JSON formats.

## Features

- **Dual Format Support**: Serves both HTML (for browsers) and JSON (for APIs)
- **Random Responses**: Returns a random "no" response from a curated list
- **Modern Styling**: Beautiful glassmorphism design for the HTML interface
- **Health Checks**: Built-in health check endpoint for monitoring
- **Containerized**: Ready for deployment with Podman/Docker

## API Endpoints

- `GET /` - Returns a random "no" (HTML by default, JSON with Accept header)
- `GET /api/no` - Explicit JSON endpoint with additional metadata
- `GET /health` - Health check endpoint
- `GET /*` - Catch-all that returns "no" for any other path

## Content Negotiation

The root endpoint (`/`) supports content negotiation:
- Browser requests get HTML
- Requests with `Accept: application/json` get JSON

## Usage Examples

### HTML (Browser)
```
curl http://localhost:4567/
```

### JSON
```bash
# Using Accept header
curl -H "Accept: application/json" http://localhost:4567/

# Using explicit API endpoint
curl http://localhost:4567/api/no
```

### Sample JSON Response
```json
{
  "answer": "Absolutely not",
  "timestamp": "2025-06-06T12:00:00Z",
  "service": "No as a Service",
  "version": "1.0.0"
}
```

## Local Development

### Prerequisites
- Ruby 3.2+
- Bundler

### Setup
```bash
# Install dependencies
bundle install

# Run the application
ruby app.rb

# Or use rerun for auto-reload during development
bundle exec rerun ruby app.rb
```

The application will be available at `http://localhost:4567`

## Container Deployment

### Build with Podman
```bash
podman build -t naas .
```

### Run with Podman
```bash
# Basic run
podman run -p 4567:4567 naas

# Run in background with restart policy
podman run -d --name naas-service -p 4567:4567 --restart=always naas

# Run with custom port
podman run -p 8080:4567 -e PORT=4567 naas
```

### Docker Commands
The same commands work with Docker by replacing `podman` with `docker`.

## Environment Variables

- `PORT` - Port to bind to (default: 4567)

## Health Monitoring

The service includes a health check endpoint at `/health` that returns:
```json
{
  "status": "healthy",
  "timestamp": "2025-06-06T12:00:00Z"
}
```

## File Structure

```
.
├── app.rb          # Main Sinatra application
├── Gemfile         # Ruby dependencies
├── Containerfile   # Container build instructions
└── README.md       # This file
```

## License

This project is released under the MIT License. Feel free to use it for your negative response needs!