from pisa import logging, M

# Dictionaries in Python are "passed-by-reference", so no return is needed for the Cleaner"
# https://docs.python.org/3/faq/programming.html#how-do-i-write-a-function-with-output-parameters-call-by-reference


class Cleaner:
    @staticmethod
    def delete_expired_appointment(expired_appointments, appointments, locator_uuid_map):
        for uuid in expired_appointments:
            locator = appointments[uuid].locator

            appointments.pop(uuid)

            if len(locator_uuid_map[locator]) == 1:
                locator_uuid_map.pop(locator)

            else:
                locator_uuid_map[locator].remove(uuid)

            logging.info(M("[Cleaner] end time reached with no match! Deleting appointment.",
                           locator=locator, uuid=uuid))

    @staticmethod
    def delete_completed_jobs(jobs, tx_job_map, completed_jobs, height):
        for uuid, confirmations in completed_jobs:
            logging.info(M("[Cleaner] job completed. Appointment ended after reaching enough confirmations.",
                           uuid=uuid, height=height, confirmations=confirmations))

            # ToDo: #9-add-data-persistence
            justice_txid = jobs[uuid].justice_txid
            jobs.pop(uuid)

            if len(tx_job_map[justice_txid]) == 1:
                tx_job_map.pop(justice_txid)

                logging.info(M("[Cleaner] no more jobs for justice transaction.", justice_txid=justice_txid))

            else:
                tx_job_map[justice_txid].remove(uuid)