# Package Status Flow

SketchSystems.spec

# Package Status Flow

READY
  VALIDATE_ADDRESS -> IN_TRANSIT
  ADDRESS_INVALID -> INVALID_ADDRESS
  SKIP_DELIVERY -> SKIPPED

INVALID_ADDRESS
  FIX_ADDRESS -> READY
  SKIP_DELIVERY -> SKIPPED
  RETURN_PACKAGE -> RETURNED

IN_TRANSIT
  DELIVER -> DELIVERED
  ADDRESS_ISSUE -> INVALID_ADDRESS
  SKIP_DELIVERY -> SKIPPED
  RETURN_PACKAGE -> RETURNED

DELIVERED
  # Final state - no transitions

SKIPPED
  RETRY -> READY
  RETURN_PACKAGE -> RETURNED

RETURNED
  # Final state - no transitions

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}`);
}