def evaluate_amounts_received_after_window_closes():
"""
Finds any amount which is
- received on or after the Future_Price window closes and
- has not yet been returned and
- has at least 6 confirmations
Return it to itself.
"""
received_amounts = Received_Amount.objects.filter(confirmations__gte=6, returned_amount__isnull=True, time__gte=F('prediction__future_price__time_window_closes'))
for received_amount in received_amounts:
returned_amount = {
"amount": received_amount.amount,
"from_received_amount": received_amount,
"to_prediction": received_amount.prediction,
}
returned_amount_obj = Returned_Amount(**returned_amount)
returned_amount_obj.save()
def evaluate_amounts_received_after_window_closes():
"""
Finds any amount which is
- received on or after the Future_Price window closes and
- has not yet been returned and
- has at least 6 confirmations
Return it to itself.
"""
received_amounts = Received_Amount.objects.filter(
confirmations__gte=6,
returned_amount__isnull=True,
time__gte=F('prediction__future_price__time_window_closes'))
for received_amount in received_amounts:
returned_amount = {
"amount": received_amount.amount,
"from_received_amount": received_amount,
"to_prediction": received_amount.prediction,
}
returned_amount_obj = Returned_Amount(**returned_amount)
returned_amount_obj.save()
def evaluate_winners_and_losers(future_price):
"""
This function creates Returned_Amount objects according to who wins
and loses the future_price wager.
Winners always get their initial deposit back.
The loser payments go to the winners in chronological order, until the
winner has received up to their original deposit amount (less commission),
and then the next winner begins to receive loser payouts, until there
are no more loser payments to make.
If there are more losers than winners, the losers who are not paid to
winners are returned to the losers.
"""
winners = []
losers = []
target_price = future_price.target_price
try:
actual_price_obj = Bitcoin_Price.objects.get(time=future_price.time_to_match_price)
except:
return # there is no bitcoin price for this time so this future_price cannot be evaluated
actual_price = actual_price_obj.price
price_is_less_than_target = actual_price < target_price
price_is_equal_to_target = target_price == actual_price
amounts = Received_Amount.objects.filter(
amount__gt=0,
prediction__future_price=future_price,
time__lt=future_price.time_window_closes
).order_by('time', 'id')
# Split into winners and losers
for received_amount in amounts:
guessed_correctly = (received_amount.prediction.price_will_be_less_than_target and price_is_less_than_target) or \
(not received_amount.prediction.price_will_be_less_than_target and not price_is_less_than_target)
if guessed_correctly:
# This is a winner
returned_amount = {
"amount": received_amount.amount,
"from_received_amount": received_amount,
"to_prediction": received_amount.prediction,
}
returned_amount_obj = Returned_Amount(**returned_amount)
returned_amount_obj.save()
winners.append({
"received_amount": received_amount,
"from_losers": 0
})
elif price_is_equal_to_target:
# Eligible for refund but not for winnings
# TODO: If the received amount is not confirmed, it will still be
# returned
returned_amount = {
"amount": received_amount.amount,
"from_received_amount": received_amount,
"to_prediction": received_amount.prediction,
}
returned_amount_obj = Returned_Amount(**returned_amount)
returned_amount_obj.save()
else:
# Record this so in the next step this can be allocated to winners
losers.append({
"received_amount": received_amount,
"to_winners": 0,
"commission": 0
})
for loser in losers:
# Pay the winners
for winner in winners:
loser_funds_remaining = loser["received_amount"].amount - loser["to_winners"] - loser["commission"]
loser_is_broke = loser_funds_remaining == 0
if loser_is_broke:
break
winner_received_from_losers = winner["from_losers"]
winner_total_owed_from_losers = winner["received_amount"].amount * (1-COMMISSION)
amount_remaining_to_pay_winner = winner_total_owed_from_losers - winner_received_from_losers
if amount_remaining_to_pay_winner > 0:
amount_to_pay_winner = min(amount_remaining_to_pay_winner, loser_funds_remaining * (1-COMMISSION))
commission = amount_to_pay_winner / (1-COMMISSION) * COMMISSION
loser["to_winners"] = loser["to_winners"] + amount_to_pay_winner
loser["commission"] = loser["commission"] + commission
winner["from_losers"] = winner["from_losers"] + amount_to_pay_winner
returned_amount = {
"amount": amount_to_pay_winner,
"from_received_amount": loser["received_amount"],
"to_prediction": winner["received_amount"].prediction,
}
returned_amount_obj = Returned_Amount(**returned_amount)
returned_amount_obj.save()
commission_amount = {
"returned_amount": returned_amount_obj,
"amount": commission
}
commission_amount_obj = Commission_Amount(**commission_amount)
commission_amount_obj.save()
# Return any amount remaining after all the winners are paid
loser_funds_remaining = loser["received_amount"].amount - loser["to_winners"] - loser["commission"]
if loser_funds_remaining > 0:
returned_amount = {
"amount": loser_funds_remaining,
"from_received_amount": loser["received_amount"],
"to_prediction": loser["received_amount"].prediction,
}
returned_amount_obj = Returned_Amount(**returned_amount)
returned_amount_obj.save()
def evaluate_winners_and_losers(future_price):
"""
This function creates Returned_Amount objects according to who wins
and loses the future_price wager.
Winners always get their initial deposit back.
The loser payments go to the winners in chronological order, until the
winner has received up to their original deposit amount (less commission),
and then the next winner begins to receive loser payouts, until there
are no more loser payments to make.
If there are more losers than winners, the losers who are not paid to
winners are returned to the losers.
"""
winners = []
losers = []
target_price = future_price.target_price
try:
actual_price_obj = Bitcoin_Price.objects.get(
time=future_price.time_to_match_price)
except:
return # there is no bitcoin price for this time so this future_price cannot be evaluated
actual_price = actual_price_obj.price
price_is_less_than_target = actual_price < target_price
price_is_equal_to_target = target_price == actual_price
amounts = Received_Amount.objects.filter(
amount__gt=0,
prediction__future_price=future_price,
time__lt=future_price.time_window_closes).order_by('time', 'id')
# Split into winners and losers
for received_amount in amounts:
guessed_correctly = (received_amount.prediction.price_will_be_less_than_target and price_is_less_than_target) or \
(not received_amount.prediction.price_will_be_less_than_target and not price_is_less_than_target)
if guessed_correctly:
# This is a winner
returned_amount = {
"amount": received_amount.amount,
"from_received_amount": received_amount,
"to_prediction": received_amount.prediction,
}
returned_amount_obj = Returned_Amount(**returned_amount)
returned_amount_obj.save()
winners.append({
"received_amount": received_amount,
"from_losers": 0
})
elif price_is_equal_to_target:
# Eligible for refund but not for winnings
# TODO: If the received amount is not confirmed, it will still be
# returned
returned_amount = {
"amount": received_amount.amount,
"from_received_amount": received_amount,
"to_prediction": received_amount.prediction,
}
returned_amount_obj = Returned_Amount(**returned_amount)
returned_amount_obj.save()
else:
# Record this so in the next step this can be allocated to winners
losers.append({
"received_amount": received_amount,
"to_winners": 0,
"commission": 0
})
for loser in losers:
# Pay the winners
for winner in winners:
loser_funds_remaining = loser["received_amount"].amount - loser[
"to_winners"] - loser["commission"]
loser_is_broke = loser_funds_remaining == 0
if loser_is_broke:
break
winner_received_from_losers = winner["from_losers"]
winner_total_owed_from_losers = winner[
"received_amount"].amount * (1 - COMMISSION)
amount_remaining_to_pay_winner = winner_total_owed_from_losers - winner_received_from_losers
if amount_remaining_to_pay_winner > 0:
amount_to_pay_winner = min(
amount_remaining_to_pay_winner,
loser_funds_remaining * (1 - COMMISSION))
commission = amount_to_pay_winner / (1 -
COMMISSION) * COMMISSION
loser[
"to_winners"] = loser["to_winners"] + amount_to_pay_winner
loser["commission"] = loser["commission"] + commission
winner["from_losers"] = winner[
"from_losers"] + amount_to_pay_winner
returned_amount = {
"amount": amount_to_pay_winner,
"from_received_amount": loser["received_amount"],
"to_prediction": winner["received_amount"].prediction,
}
returned_amount_obj = Returned_Amount(**returned_amount)
returned_amount_obj.save()
commission_amount = {
"returned_amount": returned_amount_obj,
"amount": commission
}
commission_amount_obj = Commission_Amount(**commission_amount)
commission_amount_obj.save()
# Return any amount remaining after all the winners are paid
loser_funds_remaining = loser["received_amount"].amount - loser[
"to_winners"] - loser["commission"]
if loser_funds_remaining > 0:
returned_amount = {
"amount": loser_funds_remaining,
"from_received_amount": loser["received_amount"],
"to_prediction": loser["received_amount"].prediction,
}
returned_amount_obj = Returned_Amount(**returned_amount)
returned_amount_obj.save()