Dimmer Class

dimmer.js

// MIN_LEVEL = 5
// MAX_LEVEL = 15

// Light Switch | Brightnesses for given Bulb Capacity
// Dimmer Level | 5 Watt | 10 Watt | 20 Watt
// 5            | 0      | 0       | 0
// 15           | 5      | 10      | 20
// 10           | 2.5    | 5       | 10

class Dimmer {
  lights = [];
  lightsMap = {};

  constructor(minBrightness, maxBrightness) {
    this.minBrightness = minBrightness;
    this.maxBrightness = maxBrightness;
  }
  
  setBrightness(brightness) {
    if (brightness >= this.minBrightness && brightness <= this.maxBrightness) {
      this.brightness = brightness;
    }
    // TODO: loop thru the lights and set brightness
  }
  
  addLight(light) {
    if (!this.lights.find(_light => _light.id === light.id)) {
      this.lights.push(light);
      this.lightsMap[light.id] = light;
    }
    // TODO: set brightness on the light
  }
  
  removeLight(light) {
    // this.lights = this.lights.filter(_light => _light.id !== light.id);
    delete this.lightsMap[light.id];
  }
  
  getBrightnessLevels() {
    return Object.values(this.lightsMap).map(calcBrightness);
  }
  
  calcBrightness(light) {
    return light.wattage * ((this.brightness - this.minBrightness) / (this.maxBrightness - this.minBrightness));
  }
}

class Light {
  constructor(wattage) {
    this.id = `${Math.random()}`;
    this.wattage = wattage;
  }
  
  setBrightness(brightness) {
    this.brightness = brightness;
  }
}

const lights = [
  new Light(5),
  new Light(10),
  new Light(15),
];
const dimmer = new Dimmer(5, 15);
dimmer.setBrightness(10);
for (let light of lights) {
  dimmer.addLight(light);
}
dimmer.removeLight(lights[0]);
console.log(dimmer.getBrightnessLevels());
console.log(JSON.stringify(dimmer.getBrightnessLevels()) === JSON.stringify([0, 0, 0]));

// console.log(JSON.stringify(dimmer(5, 15, 5, [5, 10, 20])) === JSON.stringify([0, 0, 0]));
// console.log(JSON.stringify(dimmer(5, 15, 10, [5, 10, 20])) === JSON.stringify([2.5, 5, 10]));
// console.log(JSON.stringify(dimmer(5, 15, 15, [5, 10, 20])) === JSON.stringify([5, 10, 20]));

// light = new Light(wattage)

// dimmer.addLight()
// dimmer.removeLight()
// dimmer.brighter() += 1
// dimmer.darker() -= 1
// dimmer.setMinBrightness()
// dimmer.setMaxBrightness()
// dimmer.setBrightness()