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Add environmental variables to .env
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Reckless_Satoshi
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17
.env-sample
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17
.env-sample
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@ -0,0 +1,17 @@
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# Market price public API
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MARKET_PRICE_API = 'https://blockchain.info/ticker'
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# Trade fee in percentage %
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FEE = 0.002
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# Bond size in percentage %
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BOND_SIZE = 0.01
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# Trade limits in satoshis
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MIN_TRADE = 10000
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MAX_TRADE = 500000
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# Expiration time in minutes
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EXPIRATION_MAKE = 5
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# Username for HTLCs escrows
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ESCROW_USERNAME = 'admin'
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154
api/logics.py
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154
api/logics.py
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from datetime import timedelta
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from django.utils import timezone
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import requests
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from .lightning import LNNode
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from .models import Order, LNPayment, User
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from decouple import config
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FEE = float(config('FEE'))
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BOND_SIZE = float(config('BOND_SIZE'))
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MARKET_PRICE_API = config('MARKET_PRICE_API')
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ESCROW_USERNAME = config('ESCROW_USERNAME')
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class Logics():
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# escrow_user = User.objects.get(username=ESCROW_USERNAME)
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def validate_already_maker_or_taker(user):
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'''Checks if the user is already partipant of an order'''
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queryset = Order.objects.filter(maker=user)
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if queryset.exists():
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return False, {'Bad Request':'You are already maker of an order'}
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queryset = Order.objects.filter(taker=user)
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if queryset.exists():
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return False, {'Bad Request':'You are already taker of an order'}
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return True, None
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def take(order, user):
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order.taker = user
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order.status = Order.Status.TAK
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order.save()
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def is_buyer(order, user):
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is_maker = order.maker == user
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is_taker = order.taker == user
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return (is_maker and order.type == Order.Types.BUY) or (is_taker and order.type == Order.Types.SELL)
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def is_seller(order, user):
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is_maker = order.maker == user
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is_taker = order.taker == user
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return (is_maker and order.type == Order.Types.SELL) or (is_taker and order.type == Order.Types.BUY)
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def satoshis_now(order):
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''' checks trade amount in sats '''
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if order.is_explicit:
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satoshis_now = order.satoshis
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else:
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market_prices = requests.get(MARKET_PRICE_API).json()
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print(market_prices)
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exchange_rate = float(market_prices[Order.Currencies(order.currency).label]['last'])
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print(exchange_rate)
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satoshis_now = ((float(order.amount) * 1+float(order.premium)) / exchange_rate) * 100*1000*1000
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print(satoshis_now)
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return satoshis_now
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def order_expires(order):
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order.status = Order.Status.EXP
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order.maker = None
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order.taker = None
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order.save()
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@classmethod
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def update_invoice(cls, order, user, invoice):
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is_valid_invoice, num_satoshis, description, payment_hash, expires_at = LNNode.validate_ln_invoice(invoice)
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# only user is the buyer and a valid LN invoice
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if cls.is_buyer(order, user) and is_valid_invoice:
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order.buyer_invoice, _ = LNPayment.objects.update_or_create(
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concept = LNPayment.Concepts.PAYBUYER,
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type = LNPayment.Types.NORM,
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sender = User.objects.get(username=ESCROW_USERNAME),
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receiver= user,
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# if there is a LNPayment matching these above, it updates that with defaults below.
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defaults={
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'invoice' : invoice,
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'status' : LNPayment.Status.VALIDI,
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'num_satoshis' : num_satoshis,
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'description' : description,
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'payment_hash' : payment_hash,
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'expires_at' : expires_at}
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)
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#If the order status was Payment Failed. Move foward to invoice Updated.
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if order.status == Order.Status.FAI:
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order.status = Order.Status.UPI
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order.save()
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return True
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return False
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@classmethod
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def gen_maker_hodl_invoice(cls, order, user):
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# Do not and delete if order is more than 5 minutes old
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if order.expires_at < timezone.now():
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cls.order_expires(order)
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return False, {'Order expired':'cannot generate a bond invoice for an expired order. Make a new one.'}
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if order.maker_bond:
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return True, {'invoice':order.maker_bond.invoice,'bond_satoshis':order.maker_bond.num_satoshis}
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order.satoshis_now = cls.satoshis_now(order)
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bond_satoshis = order.satoshis_now * BOND_SIZE
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description = f'Robosats maker bond for order ID {order.id}. Will return to you if you do not cheat!'
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invoice, payment_hash, expires_at = LNNode.gen_hodl_invoice(num_satoshis = bond_satoshis, description=description)
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order.maker_bond = LNPayment.objects.create(
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concept = LNPayment.Concepts.MAKEBOND,
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type = LNPayment.Types.HODL,
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sender = user,
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receiver = User.objects.get(username=ESCROW_USERNAME),
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invoice = invoice,
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status = LNPayment.Status.INVGEN,
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num_satoshis = bond_satoshis,
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description = description,
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payment_hash = payment_hash,
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expires_at = expires_at,
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)
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order.save()
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return True, {'invoice':invoice,'bond_satoshis':bond_satoshis}
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@classmethod
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def gen_taker_buyer_hodl_invoice(cls, order, user):
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# Do not and delete if order is more than 5 minutes old
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if order.expires_at < timezone.now():
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cls.order_expires(order)
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return False, {'Order expired':'cannot generate a bond invoice for an expired order. Make a new one.'}
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if order.maker_bond:
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return True, {'invoice':order.maker_bond.invoice,'bond_satoshis':order.maker_bond.num_satoshis}
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order.satoshis_now = cls.satoshis_now(order)
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bond_satoshis = order.satoshis_now * BOND_SIZE
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description = f'Robosats maker bond for order ID {order.id}. Will return to you if you do not cheat!'
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invoice, payment_hash, expires_at = LNNode.gen_hodl_invoice(num_satoshis = bond_satoshis, description=description)
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order.maker_bond = LNPayment.objects.create(
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concept = LNPayment.Concepts.MAKEBOND,
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type = LNPayment.Types.HODL,
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sender = user,
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receiver = User.objects.get(username=ESCROW_USERNAME),
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invoice = invoice,
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status = LNPayment.Status.INVGEN,
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num_satoshis = bond_satoshis,
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description = description,
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payment_hash = payment_hash,
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expires_at = expires_at,
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)
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order.save()
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return True, {'invoice':invoice,'bond_satoshis':bond_satoshis}
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128
api/models.py
128
api/models.py
@ -5,24 +5,18 @@ from django.db.models.signals import post_save, pre_delete
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from django.dispatch import receiver
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from django.utils.html import mark_safe
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from datetime import timedelta
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from django.utils import timezone
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from decouple import config
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from pathlib import Path
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import requests
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from .lightning import LNNode
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#############################
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# TODO
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# Load hparams from .env file
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MIN_TRADE = 10*1000 #In sats
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MAX_TRADE = 500*1000
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FEE = 0.002 # Trade fee in %
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BOND_SIZE = 0.01 # Bond in %
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ESCROW_USERNAME = 'admin'
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MARKET_PRICE_API = 'https://blockchain.info/ticker'
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MIN_TRADE = int(config('MIN_TRADE'))
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MAX_TRADE = int(config('MAX_TRADE'))
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FEE = float(config('FEE'))
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BOND_SIZE = float(config('BOND_SIZE'))
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class LNPayment(models.Model):
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@ -189,113 +183,3 @@ class Profile(models.Model):
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def avatar_tag(self):
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return mark_safe('<img src="%s" width="50" height="50" />' % self.get_avatar())
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class Logics():
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# escrow_user = User.objects.get(username=ESCROW_USERNAME)
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def validate_already_maker_or_taker(user):
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'''Checks if the user is already partipant of an order'''
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queryset = Order.objects.filter(maker=user)
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if queryset.exists():
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return False, {'Bad Request':'You are already maker of an order'}
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queryset = Order.objects.filter(taker=user)
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if queryset.exists():
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return False, {'Bad Request':'You are already taker of an order'}
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return True, None
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def take(order, user):
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order.taker = user
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order.status = Order.Status.TAK
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order.save()
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def is_buyer(order, user):
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is_maker = order.maker == user
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is_taker = order.taker == user
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return (is_maker and order.type == Order.Types.BUY) or (is_taker and order.type == Order.Types.SELL)
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def is_seller(order, user):
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is_maker = order.maker == user
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is_taker = order.taker == user
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return (is_maker and order.type == Order.Types.SELL) or (is_taker and order.type == Order.Types.BUY)
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def satoshis_now(order):
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''' checks trade amount in sats '''
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if order.is_explicit:
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satoshis_now = order.satoshis
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else:
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market_prices = requests.get(MARKET_PRICE_API).json()
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print(market_prices)
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exchange_rate = float(market_prices[Order.Currencies(order.currency).label]['last'])
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print(exchange_rate)
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satoshis_now = ((float(order.amount) * 1+float(order.premium)) / exchange_rate) * 100*1000*1000
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print(satoshis_now)
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return satoshis_now
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def order_expires(order):
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order.status = Order.Status.EXP
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order.maker = None
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order.taker = None
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order.save()
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@classmethod
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def update_invoice(cls, order, user, invoice):
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is_valid_invoice, num_satoshis, description, payment_hash, expires_at = LNNode.validate_ln_invoice(invoice)
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# only user is the buyer and a valid LN invoice
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if cls.is_buyer(order, user) and is_valid_invoice:
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order.buyer_invoice, _ = LNPayment.objects.update_or_create(
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concept = LNPayment.Concepts.PAYBUYER,
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type = LNPayment.Types.NORM,
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sender = User.objects.get(username=ESCROW_USERNAME),
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receiver= user,
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# if there is a LNPayment matching these above, it updates that with defaults below.
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defaults={
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'invoice' : invoice,
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'status' : LNPayment.Status.VALIDI,
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'num_satoshis' : num_satoshis,
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'description' : description,
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'payment_hash' : payment_hash,
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'expires_at' : expires_at}
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)
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#If the order status was Payment Failed. Move foward to invoice Updated.
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if order.status == Order.Status.FAI:
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order.status = Order.Status.UPI
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order.save()
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return True
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return False
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@classmethod
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def gen_maker_hodl_invoice(cls, order, user):
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# Do not and delete if order is more than 5 minutes old
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if order.expires_at < timezone.now():
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cls.order_expires(order)
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return False, {'Order expired':'cannot generate a bond invoice for an expired order. Make a new one.'}
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if order.maker_bond:
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return True, {'invoice':order.maker_bond.invoice,'bond_satoshis':order.maker_bond.num_satoshis}
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order.satoshis_now = cls.satoshis_now(order)
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bond_satoshis = order.satoshis_now * BOND_SIZE
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description = f'Robosats maker bond for order ID {order.id}. Will return to you if you do not cheat!'
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invoice, payment_hash, expires_at = LNNode.gen_hodl_invoice(num_satoshis = bond_satoshis, description=description)
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order.maker_bond = LNPayment.objects.create(
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concept = LNPayment.Concepts.MAKEBOND,
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type = LNPayment.Types.HODL,
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sender = user,
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receiver = User.objects.get(username=ESCROW_USERNAME),
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invoice = invoice,
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status = LNPayment.Status.INVGEN,
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num_satoshis = bond_satoshis,
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description = description,
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payment_hash = payment_hash,
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expires_at = expires_at,
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)
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order.save()
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return True, {'invoice':invoice,'bond_satoshis':bond_satoshis}
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@ -8,8 +8,8 @@ from django.contrib.auth import authenticate, login, logout
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from django.contrib.auth.models import User
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from .serializers import ListOrderSerializer, MakeOrderSerializer, UpdateInvoiceSerializer
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from .models import Order, LNPayment, Logics
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from .lightning import LNNode
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from .models import Order
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from .logics import Logics
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from .nick_generator.nick_generator import NickGenerator
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from robohash import Robohash
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@ -21,8 +21,9 @@ from pathlib import Path
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from datetime import timedelta
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from django.utils import timezone
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# .env
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EXPIRATION_MAKE = 5 # minutes
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from decouple import config
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EXPIRATION_MAKE = config('EXPIRATION_MAKE')
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avatar_path = Path('frontend/static/assets/avatars')
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avatar_path.mkdir(parents=True, exist_ok=True)
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