Initial

SketchSystems.spec

Initial
  Cruise has space -> Booking
  Cruise does not have space -> Delete booking

Booking
  Proceed to Checkout -> Checkout

Checkout
  Proceed to Payment -> Payment
  Checkout timeout -> Cart timeout

Payment
  PayGate Payment
    Success -> Transaction successful
    Failed -> Failed or no transaction
    No action after 30 minutes -> Failed or no transaction

  Transaction successful
    Pay full amount -> Payment
    Full amount paid -> Fully paid

  Failed or no transaction
    Try again -> Payment

Cart timeout
  When did booking start?
    Less than 30 minutes -> Can proceed
    More than 30 minutes -> Abandon cart
  Can proceed
    Click Proceed to Checkout -> Checkout
  Abandon cart
    Click on email link -> Checkout
    No action after 12 hours -> Cart expired
 
 Delete booking
   TODO remove cruise from flat file database
 
 Cart expired
   Note - Can get here from any state
 
 Fully paid

SketchSystems_prototype.js

function render(model){
  let current_state_name = model.active_states[0].name;
  return $("h1",
           {style: {color: "darkBlue"}},
           `The current state is: ${current_state_name}`);
}