Task

Implement an application that accepts a collection of shifts and outputs a payslip. Tooling, language and design is the choice of the implementor but it'd be reasonable to assume a command line executable or service endpoint or similar that takes an input and produces an output. It is not expected to produce a GUI for this task.

Whilst having the correct output is important, we are more interested in your approach to the solution.

Example Input

An example of the input looks like below:

{
  "employee": {
    "name": "John Smith",
  },
  "wageLevels": {
    "1": "12.34",
    "3": "14.12"
  },
  "shifts": [
    {
      "start": "2019-06-27T12:00:00",
      "end": "2019-06-27T23:15:00",
      "wageLevel": "1",
      "breakStart": "2019-06-27T17:30:00",
      "breakDurationMinutes": "45"
    },
    {
      "start": "2019-06-28T08:00:00",
      "end": "2019-06-28T19:15:00",
      "wageLevel": "1"
    },
    {
      "start": "2019-06-29T11:00:00",
      "end": "2019-06-29T18:30:00",
      "wageLevel": "1"
    },
    {
      "start": "2019-06-30T12:00:00",
      "end": "2019-06-30T21:15:00",
      "wageLevel": "3",
      "breakStart": "2019-06-30T14:30:00",
      "breakDurationMinutes": "30"
    }
  ]
}

PaySlip Rules

• For every hour worked the employee earns 1 hour of their base rate for the shifts wageLevel.
• Employee's do not earn anything during breaks.
• They earn an additional base loading of 25% for every hour worked.
• For hours worked after 6pm from Monday to Friday the employee earns a loading of 30%.
• Hours beyond 9 hours of work (excluding breaks) are considered overtime.
• For hours worked as overtime the employee earns a loading of 75%.
• For hours worked beyond 3 hours of overtime the employee earns a loading of 125%.
• For hours worked on a Saturday the employee earns a loading of 50%.
• For hours worked on a Sunday the employee earns a loading of 95%.
• For overtime hours worked on a Sunday the employee earns a loading of 125%.
• All loading values are absolute, not additive (e.g after 6pm Monday to Friday is 30%, not 25% + 30%).
• Shifts won't ever span beyond a single day, you can ignore this scenario.

PaySlip format

• The payslip should provide totals for the number of normal hours worked, number of overtime hours worked and total earnings.
• For each shift, it should detail the amount of earnings, how many normal, after 6 and overtime hours were worked.
• JSON, CSV, XML, Unit Test or simple text are valid outputs.