Purpose

Yegor Bugayenko wrote a book about object-oriented programing called Elegant Objects. Some people call the approach controversial, some are trying to adapt the concepts from the book and some would like to propose changes. This software will implement a call center where people can call in and get issues resolved.

PR's to follow the concept of Elegant Objects

Each chapter of the book Elegant Objects by Yegor Bugayenko will be covered by one or more pull request.

Chapter 1 - Birth

• Never us -er names
• Make one constructor primary
• Keep constructor code free

Call Center Design

Source: https://github.com/donnemartin/system-design-primer/blob/master/solutions/object_oriented_design/call_center/call_center.ipynb

Design

We will be designing this with 4 classes:

• Call
• Employee
  • Operator
  • Supervisor
  • Director
• Caller
• Issue

Constraints and assumptions

What levels of employees are in the call center?

    Operator, supervisor, director

Can we assume operators always get the initial calls?

    Yes

If there is no available operators or the operator can't handle the call, does the call go to the supervisors?

    Yes

If there is no available supervisors or the supervisor can't handle the call, does the call go to the directors?

    Yes

Can we assume the directors can handle all calls?

    Yes

What happens if nobody can answer the call?

    It gets queued

Do we need to handle 'VIP' calls where we put someone to the front of the line?

    No

Can we assume inputs are valid or do we have to validate them?

    Assume they're valid