def start(self,
db: Session,
db_obj: Auction,
starting_date=None) -> Auction:
auction_id = db_obj.id
if starting_date:
# schedule start of auction
sched.add_job(EnglishAuction.start_auction,
'date',
run_date=starting_date,
args=[auction_id])
# schedule ending
sched.add_job(EnglishAuction.end_auction,
'date',
run_date=db_obj.ending_date,
args=[auction_id])
db_obj.current_bid_amount = db_obj.starting_amount
db.add(db_obj)
db.commit()
db.refresh(db_obj)
auction_repo.change_state(db,
db_obj=db_obj,
state=AuctionState.ONGOING)
return db_obj
def end(self, db: Session, db_obj: Auction) -> Auction:
if db_obj.reserve and db_obj.current_bid_amount < db_obj.reserve:
auction_repo.change_state(db,
db_obj=db_obj,
state=AuctionState.CANCLED)
else:
if db_obj.winning_bid:
db_obj.final_winner_id = db_obj.winning_bid.bidder_id
db.add(db_obj)
db.commit()
db.refresh(db_obj)
auction_repo.change_state(db,
db_obj=db_obj,
state=AuctionState.ENDED)
return db_obj
def end(self, db: Session, db_obj: Auction) -> Auction:
if db_obj.reserve and db_obj.current_bid_amount < db_obj.reserve:
# when reserve not reached
auction_repo.change_state(db,
db_obj=db_obj,
state=AuctionState.CANCLED)
else:
if db_obj.winning_bid:
# when someone bid in the auction
db_obj.final_winner_id = db_obj.winning_bid.bidder_id
db.add(db_obj)
db.commit()
db.refresh(db_obj)
auction_repo.change_state(db,
db_obj=db_obj,
state=AuctionState.ENDED)
notification_data = {
'title':
f'You have won the auction of {db_obj.product.name}',
'sender_id': db_obj.owner_id,
'reciever_id': db_obj.final_winner_id
}
notification_repo.create(db=db, obj_in=notification_data)
else:
# when no one bid in the auction
auction_repo.change_state(db,
db_obj=db_obj,
state=AuctionState.CANCLED)
return db_obj
def cancel(self, db: Session, db_obj: Auction):
return auction_repo.change_state(db,
db_obj=db_obj,
state=AuctionState.CANCLED)