DESIGN_PATTERNS_decoratorPatternExample.js

class User {
  constructor({ name, continent, email }) {
    this.setName(name);
    this.setEmail(email);
    this.setContinent(continent);
  }

  setName(name) {
    this.name = name;
  }

  setContinent(continent) {
    this.continent = continent;
  }

  setEmail(email) {
    this.email = email;
  }
}

class UserGPDRDecorator {
  constructor({ UserInstance, allowCookies = true }) {
    if (UserInstance.continent === "Europe") {
      UserInstance.setAllowCookies = this.setAllowCookies;
      UserInstance.deleteAllMyData = this.deleteAllMyData;
      UserInstance.setAllowCookies(allowCookies);
    }

    return UserInstance;
  }

  setAllowCookies(allowCookies) {
    this.allowCookies = allowCookies;
  }

  deleteAllMyData() {
    if (this.continent === "Europe") {
      delete this.name;
      delete this.continent;
      delete this.email;
      delete this.allowCookies;
    }
  }
}

const run = () => {
  const userRicardoInstance = new UserGPDRDecorator({
    UserInstance: new User({
      name: "Ricardo",
      continent: "Europe",
      email: "[email protected]",
    }),
    allowCookies: false,
  });

  console.log(userRicardoInstance);

  userRicardoInstance.deleteAllMyData();
  console.log(userRicardoInstance);

  const userRobInstance = new User({
    name: "Rob",
    continent: "America",
    email: "[email protected]",
  });

  console.log(userRobInstance);
};

run();