Welcome to the third lesson of our "Applying Design Patterns for Real World Problems using Scala" course! In this lesson, we'll delve into two powerful design patterns: the Command pattern and the Decorator pattern. These patterns will empower you to design a robust and flexible smart home automation and lighting control system in Scala 3. Let's embark on this journey to create a system that’s as adaptable as it is efficient! 🚀

Here's a brief overview of what we'll be doing in this lesson:

1. Basic Setup:

   • Abstract Device: Define a trait Device and create specific device classes (Light, Fan) that extend from it.
   • Factory Method: Leverage companion objects to serve as factories for generating instances of these devices.

2. Command Pattern:

   • Purpose: Encapsulates a request as an object, facilitating parameterization, queuing, logging, and support for undoable operations.
   • Components:
     • Define a Command trait and concrete command classes (LightOnCommand, LightOffCommand).