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xmrauctions/sales/tasks.py

230 lines
8.6 KiB
Python

import logging
from decimal import Decimal
from huey import crontab
from huey.contrib.djhuey import periodic_task
from django.conf import settings
from django.core.mail import send_mail
from django.template.loader import render_to_string
from django.urls import reverse
from core.monero import AuctionWallet
from core.models import UserShippingAddress
from sales.models import ItemSale
logger = logging.getLogger('django.server')
class EmailTemplate:
def __init__(self, item, scenario, role):
context = {
'sale': item,
'site_name': settings.SITE_NAME,
'site_url': settings.SITE_URL,
'sale_path': reverse('get_sale', args=[item.id])
}
subject = render_to_string(
template_name=f'sales/notify/{scenario}/{role}/subject.txt',
context=context,
request=None
)
body = render_to_string(
template_name=f'sales/notify/{scenario}/{role}/body.txt',
context=context,
request=None
)
self.subject = ''.join(subject.splitlines())
self.body = body
self.role = role
self.item = item
def send(self):
if self.role == 'buyer':
to_address = self.item.bid.bidder.email
else:
to_address = self.item.item.owner.email
res = send_mail(
self.subject,
self.body,
settings.DEFAULT_FROM_EMAIL,
[to_address]
)
return res
### Notifications
@periodic_task(crontab(minute='*'))
def notify_buyer_of_pending_sale():
item_sales = ItemSale.objects.filter(buyer_notified=False, sale_cancelled=False)
for sale in item_sales:
logger.info(f'[INFO] Sale #{sale.id} just created, notifying buyer.')
email_template = EmailTemplate(
item=sale,
scenario='sale_created',
role='buyer'
)
email_template.send()
sale.buyer_notified = True
sale.save()
@periodic_task(crontab(minute='*'))
def notify_seller_of_funds_received():
item_sales = ItemSale.objects.filter(seller_notified=False, buyer_notified=True).filter(payment_received=True)
for sale in item_sales:
logger.info(f'[INFO] Funds received from buyer for sale #{sale.id}, notifying seller.')
email_template = EmailTemplate(
item=sale,
scenario='funds_received',
role='seller'
)
email_template.send()
sale.seller_notified = True
sale.save()
@periodic_task(crontab(minute='*'))
def notify_buyer_of_shipment_confirmation():
item_sales = ItemSale.objects.filter(item_shipped=True).filter(buyer_notified_of_shipment=False)
for sale in item_sales:
logger.info(f'[INFO] Item shipped for sale #{sale.id}, notifying buyer.')
email_template = EmailTemplate(
item=sale,
scenario='item_shipped',
role='buyer'
)
email_template.send()
bidder_profile = UserShippingAddress.objects.get(user=sale.bid.bidder)
bidder_profile.delete()
logger.info(f'[INFO] Buyer shipping info wiped for sale #{sale.id}')
sale.buyer_notified_of_shipment = True
sale.save()
### Payments
@periodic_task(crontab(minute='*'))
def poll_for_buyer_escrow_payments():
aw = AuctionWallet()
if aw.connected is False:
logging.error('Auction wallet is not connected. Quitting.')
return False
item_sales = ItemSale.objects.filter(payment_received=False)
for sale in item_sales:
logger.info(f'[INFO] Polling escrow address #{sale.escrow_account_index} for sale #{sale.id} for new funds.')
sale_account = aw.wallet.accounts[sale.escrow_account_index]
unlocked = sale_account.balances()[1]
sale.received_payment_xmr = unlocked
if unlocked >= Decimal(str(sale.expected_payment_xmr)):
logger.info(f'[INFO] Found payment of {sale.received_payment_xmr} XMR for sale #{sale.id}.')
sale.payment_received = True
sale.save()
@periodic_task(crontab(minute='*'))
def pay_sellers_on_sold_items():
aw = AuctionWallet()
if aw.connected is False:
logging.error('Auction wallet is not connected. Quitting.')
return False
item_sales = ItemSale.objects.filter(item_received=True, payment_received=True).filter(seller_paid=False)
for sale in item_sales:
# Take platform fees from the sale - the 50:50 split between buyer/seller
sale_total = sale.agreed_price_xmr - sale.platform_fee_xmr
sale_account = aw.wallet.accounts[sale.escrow_account_index]
if sale_account.balances()[1] >= Decimal(sale.agreed_price_xmr):
try:
# Construct a transaction so we can get current fee and subtract from the total
_tx = sale_account.transfer(
sale.item.payout_address, Decimal(.01), relay=False
)
new_total = sale_total - float(_tx[0].fee)
logger.info(f'[INFO] Sending {new_total} XMR from wallet account #{sale.escrow_account_index} to item owner\'s payout address for sale #{sale.id}.')
# Make the transaction with network fee removed
tx = sale_account.transfer(
sale.item.payout_address, new_total, relay=True
)
sale.network_fee_xmr = _tx[0].fee
sale.seller_payout_transaction = tx[0]
sale.seller_paid = True
sale.escrow_complete = True
sale.save()
except Exception as e:
logger.error(f'[ERROR] Unable to pay seller for sale #{sale.id}: ')
else:
logger.warning(f'[WARNING] Not enough unlocked funds available in account #{sale.escrow_account_index} for sale #{sale.id}.')
if sale.seller_paid and sale.seller_notified_of_payout is False:
email_template = EmailTemplate(
item=sale,
scenario='sale_completed',
role='seller'
)
sent = email_template.send()
sale.seller_notified_of_payout = True
sale.save()
@periodic_task(crontab(minute='*/30'))
def pay_platform_on_sold_items():
aw = AuctionWallet()
if aw.connected is False:
logging.error('Auction wallet is not connected. Quitting.')
return False
aof = settings.PLATFORM_WALLET_ADDRESS
if aof is None:
aof = str(aw.wallet.accounts[0].address())
item_sales = ItemSale.objects.filter(escrow_complete=True, seller_paid=True, item_received=True).filter(platform_paid=False)
for sale in item_sales:
logger.info(f'[INFO] Paying platform fees for sale #{sale.id} to wallet {aof}.')
sale_account = aw.wallet.accounts[sale.escrow_account_index]
bal = sale_account.balances()[1]
if bal >= 0:
try:
if settings.PLATFORM_FEE_PERCENT > 0:
logger.info(f'[INFO] Getting platform fees of {bal} XMR')
sale_account.sweep_all(aof)
else:
logging.info('No platform fees are set - proceeding without taking fees.')
sale.platform_paid = True
sale.sale_finalized = True
sale.save()
return True
except Exception as e:
logger.error(f'[ERROR] Unable to pay platform for sale #{sale.id} - trying again')
else:
logger.warning(f'[WARNING] Not enough unlocked funds available in account #{sale.escrow_account_index} for sale #{sale.id}.')
@periodic_task(crontab(minute='0', hour='*/12'))
def close_completed_items_sales():
item_sales = ItemSale.objects.filter(platform_paid=True, sale_finalized=True)
for sale in item_sales:
logger.info(f'[INFO] Deleting item #{sale.item.id} and all accompanying bids, sales, meta, etc.')
sale.item.delete()
@periodic_task(crontab(minute='*'))
def closed_cancelled_sales():
aw = AuctionWallet()
if aw.connected is False:
logging.error('Auction wallet is not connected. Quitting.')
return False
item_sales = ItemSale.objects.filter(sale_cancelled=True)
for sale in item_sales:
logger.info(f'[INFO] Deleting sale #{sale.id} and transferring back any sent funds to the buyer.')
sale_account = aw.wallet.accounts[sale.escrow_account_index]
if sale_account.balances()[0] > Decimal(0.0):
try:
sale_account.sweep_all(sale.bid.return_address)
sale.delete()
except Exception as e:
logger.error(f'[ERROR] Unable to return funds to use for sale #{sale.id}.')
else:
sale.delete()