Invisible Observer: Chain of Responsibility Pattern

Hello, tech aficionados and stealthy observers,

Imagine being invisible and observing events without being noticed. Your observations follow a chain of handlers, each representing a different perspective or area of interest. This is the magic of the Chain of Responsibility Pattern! 🕵️‍♂️👁️💻

Act 1: The Art of Invisibility - Unseen, Unheard

In a world where invisibility is a superpower, our invisible observer roams unnoticed. But observation alone isn't enough; there's a need to follow a structured approach.

interface Observer {
  setNext(handler: Observer): Observer;
  observe(event: string): void;
}

class StealthyObserver implements Observer {
  private nextObserver: Observer;

  setNext(handler: Observer): Observer {
    this.nextObserver = handler;
    return handler;
  }

  observe(event: string) {
    if (this.nextObserver) {
      console.log(`Observing ${event} from the shadows.`);
      this.nextObserver.observe(event);
    } else {
      console.log(`Final observation of ${event}.`);
    }
  }
}

Our invisible observer utilizes the "StealthyObserver" class, which can set the next handler and observe events discreetly.

Act 2: Following the Chain - Multiple Perspectives

To observe events effectively, our invisible observer creates a chain of handlers, each focusing on a specific perspective or area of interest.

const observerA = new StealthyObserver();
const observerB = new StealthyObserver();
const observerC = new StealthyObserver();

observerA.setNext(observerB).setNext(observerC);

observerA.observe("Event A");

The invisible observer sets up a chain, where each handler can observe events discreetly and pass them along the chain.

Act 3: Unveiling the Secrets - Chain in Action

As events unfold, our invisible observer navigates the chain of handlers, unveiling secrets without being noticed.

observerA.observe("Event B");

The chain of responsibility pattern ensures that each handler observes the event from its perspective, and the observations flow seamlessly.

Conclusion: Silent Observations in Code

The Chain of Responsibility Pattern allows our invisible observer to silently observe events, following a chain of handlers with unique perspectives. It's like having multiple pairs of eyes, each focusing on a different aspect of the world.

Whether you're observing events or navigating complex code, remember that the Chain of Responsibility Pattern can help you maintain a structured approach and gain insights from multiple perspectives. 🕵️‍♂️👁️💻

The Invisible Observer: Navigating Events with the Chain of Responsibility Pattern