• Add / remove the car with parking.

• Refill the balance of the machine.

• Write off the funds for the parking space (every N-seconds will trigger the timer and write off each car parking costs).

• Display transaction history for the last minute.

• Derive the total parking revenue.

• Display the number of available parking spaces.

• Every minute, write down the Transactions.log transaction amount for the last minute with a date stamp.

• Print Transactions.log (format output)

There should be only 1 parking in the program. When you initialize the parking, you must use the Settings class. Parking keeps a list of machines / transactions.

You can add a car to the parking lot or pick up from the parking lot. Every N-second parking charges money from the car. If the car does not have enough money to pay parking, then write off the penalty (the penalty coefficient * the parking price). Also, we can not pick up the car until we replenish the balance and repeat the operation.

When debiting funds, parking keeps transactions for the last minute. At any time, we can turn to the parking lot and find out the current balance (earned money). We can apply to the parking lot and find out the amount of money earned in the last minute. We can apply to the parking lot and find out the number of free / occupied places in the parking lot. The cost of parking depends on the type of car.

• Settings (read-only / static class):

  Property Timeout (every N-second writes off the funds for the parking space) - the default is 3 seconds

  Dictionary - a dictionary for storing parking prices (for example: for trucks - 5, for cars - 3, for buses - 2, for motorcycles - 1)

  Property ParkingSpace - parking capacity (total number of seats)

  Property Fine is the penalty factor

• Parking - this class initializes using the settings described in the class Settings:

  List of machines

  Transaction List

  Property Balance (Earned Money)

• Car:

  Property identifier

  Property balance

  Property type of machine

• CarType

  Passenger

  Truck

  Bus

  Motorcycle

• Transaction

  Property Date / Time of the Transaction

  Property Machine ID

  Property Write-off

Implement a simple navigation menu for the program

Use the Singleton pattern

Provide exception handling

Keep the code clean