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

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

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

Sample JSON Response

{
  "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

# 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

podman build -t naas .

Run with Podman

# 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:

{
  "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!