Teacher.js

import {Person} from "./Person.js";

// Inheritance
export class Teacher extends Person {
  constructor(name, city, school, subject, enrollYear, basesalary) {
    super(name, city, school);
    this.subject = subject;
    this.enrollYear = enrollYear;
    this.basesalary = basesalary;

    const bonus = 1000;
    const fullSalaryPermonth = function() {
      return basesalary + bonus;
    };
    this.salary = fullSalaryPermonth();
  }
  getTeacherId() {
    return this.tid;
  }
  setTeacherId(tid) {
    this.tid = tid;
  }
  serviceYears() {
    return new Date().getFullYear() - this.enrollYear;
  }
  retireFund() {
    return this.serviceYears() * 50000;
  }
  bio() {
    let gen;
    if (this.getGender() === 'female') {
      gen = 'She';
    } else {
      gen = 'He';
    }

    return `${this.name} is born in ${this.getDOB()}.
       <br> ${gen} lives in ${this.city}.
       <br> ${gen} is ${this.calculateAge()} years old.
       <br> ${gen} is a teacher who works at ${this.school}.
       <br>${gen} is a ${this.subject} teacher. 
       <br>the ID of ${this.name} is ${this.getTeacherId()}.
       <br>${gen} has a monthly salary of ${this.salary}.
       <br> ${gen} has ${this.serviceYears()} of service years.
       <br>If ${gen} retires now, ${gen} has a retired fund of ${this.retireFund()}.`;
  };
}