Appointment Scheduling System

We've been tasked with creating a Doctor's office appointment scheduling system. When creating the models, we find that the appointment class has a lot of information tied to it, so we need a good way to construct the appointment in a dependable way. To solve this, we decide to create an appointment builder!

The Appointment Class:

class DoctorAppointment
{
   public name: string;
   public primaryDoctorName: string;
   public time: Date;
   public visitReason: string;
   public pharmacyLocation: string;
   
   constructor(name: string, primaryDoctorName: string, time: Date, visitReason:string, pharmacyLocation: string)
   {
       this.name = name;
       this.primaryDoctorName = primaryDoctorName;
       this.time = time;
       this.visitReason = visitReason;
       this.pharmacyLocation = pharmacyLocation;
   }
}

The Appointment Builder:

class AppointmentBuilder
{
   private name: string;
   private primaryDoctorName: string;
   private time: Date;
   private visitReason: string;
   private pharmacyLocation: string;

   public setName(name: string)
   {
       this.name = name;
   }

   public setPrimaryCare(name: string)
   {
       this.primaryDoctorName = name;
   }

   public setAppointmentTime(time: Date)
   {
       this.time = time;
   }

   public setVisitReason(visitReason: string)
   {
       this.visitReason = visitReason;
   }

   public setPharmacyLocation(location: string)
   {
       this.pharmacyLocation = location;
   }

   public build(): DoctorAppointment
   {
       return new DoctorAppointment(this.name, this.primaryDoctorName, this.time,
           this.visitReason, this.pharmacyLocation);
   }
}

Demo:

class BuilderDemo
{
   public execute()
   {
       let builder = new AppointmentBuilder();

       builder.setName("Clark Kent");
       // Set the appointment for Feb 18, 2003 at 12:30pm:
       builder.setAppointmentTime(new Date(2003, 2, 18, 12, 30));
       builder.setVisitReason("Meteor rock sickness.");
       builder.setPharmacyLocation("2001 main st, smallville, KS");
       builder.setPrimaryCare("Dr.Helen Bryce");

       // Create the appointment:
       let appointment = builder.build();

   }
}