Facade Pattern

// 📺 Subsystems - معقدة!
class TV {
  on() { return "📺 TV is ON"; }
  off() { return "📺 TV is OFF"; }
}

class SoundSystem {
  on() { return "🔊 Sound ON"; }
  setVolume(level) { return `🔊 Volume: ${level}`; }
  off() { return "🔊 Sound OFF"; }
}

class Lights {
  dim(level) { return `💡 Lights dimmed to ${level}%`; }
  on() { return "💡 Lights ON"; }
}

// 🎬 Facade - بيبسط كل حاجة!
class HomeTheaterFacade {
  constructor() {
    this.tv = new TV();
    this.sound = new SoundSystem();
    this.lights = new Lights();
  }
  
  // 🎯 One simple method!
  watchMovie() {
    return [
      this.lights.dim(10),
      this.tv.on(),
      this.sound.on(),
      this.sound.setVolume(80),
      "🎬 Movie starting..."
    ];
  }
  
  endMovie() {
    return [
      this.sound.off(),
      this.tv.off(),
      this.lights.on(),
      "🎬 Movie ended!"
    ];
  }
}