// Builder pattern example for creating a complex object step by step
// This example may seem like a toy (it is)
// but a real-life example (which I use in FRC) of a Builder pattern API
// can be found here (note that it's in Java):
// https://api.ctr-electronics.com/phoenix6/release/java/com/ctre/phoenix6/configs/Slot0Configs.html
// (for the above example, take note of the `with*` methods such as `.withKV`)

class Product {
  constructor() {
    this.parts = [];
  }

  addPart(part) {
    this.parts.push(part);
  }

  showParts() {
    console.log('Product parts:', this.parts.join(', '));
  }
}

class ProductBuilder {
  constructor() {
    this.product = new Product();
  }

  buildPartA() {
    this.product.addPart('Part A');
    return this;
  }

  buildPartB() {
    this.product.addPart('Part B');
    return this;
  }

  getProduct() {
    return this.product;
  }
}

// Usage
const builder = new ProductBuilder();
const product = builder.buildPartA().buildPartB().getProduct();
product.showParts(); // Product parts: Part A, Part B