nim-codex/codex/sales/states/finished.nim

import pkg/chronos
import ./cancelled
import ./errored
import ./failed
import ../statemachine

type
  SaleFinished* = ref object of State
  SaleFinishedError* = object of CatchableError

method `$`*(state: SaleFinished): string = "SaleFinished"

method run*(state: SaleFinished, machine: Machine): Future[?State] {.async.} =
  let agent = SalesAgent(machine)

  try:
    if request =? agent.request and
        slotIndex =? agent.slotIndex:
      agent.sales.proving.add(request.slotId(slotIndex))

      if onSale =? agent.sales.onSale:
        onSale(agent.availability, request, slotIndex)

    # TODO: Keep track of contract completion using local clock. When contract
    # has finished, we need to add back availability to the sales module.
    # This will change when the state machine is updated to include the entire
    # sales process, as well as when availability is persisted, so leaving it
    # as a TODO for now.

  except CancelledError:
    raise