mirror of
https://github.com/RoboSats/robosats.git
synced 2024-12-13 19:06:26 +00:00
236 lines
11 KiB
Python
236 lines
11 KiB
Python
from django.db import models
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from django.contrib.auth.models import User
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from django.core.validators import MaxValueValidator, MinValueValidator, validate_comma_separated_integer_list
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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 decouple import config
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from pathlib import Path
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from .utils import get_exchange_rate
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import json
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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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class Types(models.IntegerChoices):
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NORM = 0, 'Regular invoice' # Only outgoing HTLCs will be regular invoices (Non-hodl)
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HODL = 1, 'Hodl invoice'
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class Concepts(models.IntegerChoices):
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MAKEBOND = 0, 'Maker bond'
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TAKEBOND = 1, 'Taker bond'
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TRESCROW = 2, 'Trade escrow'
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PAYBUYER = 3, 'Payment to buyer'
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class Status(models.IntegerChoices):
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INVGEN = 0, 'Generated'
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LOCKED = 1, 'Locked'
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SETLED = 2, 'Settled'
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RETNED = 3, 'Returned'
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MISSNG = 4, 'Missing'
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VALIDI = 5, 'Valid'
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PAYING = 6, 'Paying ongoing'
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FAILRO = 7, 'Failed routing'
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# payment use details
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type = models.PositiveSmallIntegerField(choices=Types.choices, null=False, default=Types.HODL)
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concept = models.PositiveSmallIntegerField(choices=Concepts.choices, null=False, default=Concepts.MAKEBOND)
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status = models.PositiveSmallIntegerField(choices=Status.choices, null=False, default=Status.INVGEN)
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routing_retries = models.PositiveSmallIntegerField(null=False, default=0)
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# payment info
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invoice = models.CharField(max_length=300, unique=False, null=True, default=None, blank=True)
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payment_hash = models.CharField(max_length=300, unique=False, null=True, default=None, blank=True)
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description = models.CharField(max_length=300, unique=False, null=True, default=None, blank=True)
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created_at = models.DateTimeField(auto_now_add=True)
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expires_at = models.DateTimeField()
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num_satoshis = models.PositiveBigIntegerField(validators=[MinValueValidator(MIN_TRADE*BOND_SIZE), MaxValueValidator(MAX_TRADE*(1+BOND_SIZE+FEE))])
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# involved parties
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sender = models.ForeignKey(User, related_name='sender', on_delete=models.CASCADE, null=True, default=None)
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receiver = models.ForeignKey(User, related_name='receiver', on_delete=models.CASCADE, null=True, default=None)
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def __str__(self):
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return (f'HTLC {self.id}: {self.Concepts(self.concept).label} - {self.Status(self.status).label}')
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class Order(models.Model):
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class Types(models.IntegerChoices):
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BUY = 0, 'BUY'
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SELL = 1, 'SELL'
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class Status(models.IntegerChoices):
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WFB = 0, 'Waiting for maker bond'
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PUB = 1, 'Public'
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DEL = 2, 'Deleted'
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TAK = 3, 'Waiting for taker bond'
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UCA = 4, 'Cancelled'
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EXP = 5, 'Expired'
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WF2 = 6, 'Waiting for trade collateral and buyer invoice'
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WFE = 7, 'Waiting only for seller trade collateral'
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WFI = 8, 'Waiting only for buyer invoice'
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CHA = 9, 'Sending fiat - In chatroom'
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FSE = 10, 'Fiat sent - In chatroom'
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DIS = 11, 'In dispute'
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CCA = 12, 'Collaboratively cancelled'
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PAY = 13, 'Sending satoshis to buyer'
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SUC = 14, 'Sucessfully settled'
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FAI = 15, 'Failed lightning network routing'
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MLD = 16, 'Maker lost dispute'
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TLD = 17, 'Taker lost dispute'
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currency_dict = json.load(open('./api/currencies.json'))
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currency_choices = [(int(val), label) for val, label in list(currency_dict.items())]
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print(currency_choices)
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# order info
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status = models.PositiveSmallIntegerField(choices=Status.choices, null=False, default=Status.WFB)
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created_at = models.DateTimeField(auto_now_add=True)
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expires_at = models.DateTimeField()
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# order details
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type = models.PositiveSmallIntegerField(choices=Types.choices, null=False)
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currency = models.PositiveSmallIntegerField(choices=currency_choices, null=False)
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amount = models.DecimalField(max_digits=9, decimal_places=4, validators=[MinValueValidator(0.00001)])
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payment_method = models.CharField(max_length=35, null=False, default="not specified", blank=True)
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# order pricing method. A explicit amount of sats, or a relative premium above/below market.
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is_explicit = models.BooleanField(default=False, null=False)
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# marked to market
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premium = models.DecimalField(max_digits=5, decimal_places=2, default=0, null=True, validators=[MinValueValidator(-100), MaxValueValidator(999)], blank=True)
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# explicit
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satoshis = models.PositiveBigIntegerField(null=True, validators=[MinValueValidator(MIN_TRADE), MaxValueValidator(MAX_TRADE)], blank=True)
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# how many sats at creation and at last check (relevant for marked to market)
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t0_satoshis = models.PositiveBigIntegerField(null=True, validators=[MinValueValidator(MIN_TRADE), MaxValueValidator(MAX_TRADE)], blank=True) # sats at creation
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last_satoshis = models.PositiveBigIntegerField(null=True, validators=[MinValueValidator(0), MaxValueValidator(MAX_TRADE*2)], blank=True) # sats last time checked. Weird if 2* trade max...
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# order participants
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maker = models.ForeignKey(User, related_name='maker', on_delete=models.CASCADE, null=True, default=None) # unique = True, a maker can only make one order
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taker = models.ForeignKey(User, related_name='taker', on_delete=models.SET_NULL, null=True, default=None, blank=True) # unique = True, a taker can only take one order
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is_pending_cancel = models.BooleanField(default=False, null=False) # When collaborative cancel is needed and one partner has cancelled.
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is_disputed = models.BooleanField(default=False, null=False)
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is_fiat_sent = models.BooleanField(default=False, null=False)
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# HTLCs
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# Order collateral
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maker_bond = models.ForeignKey(LNPayment, related_name='maker_bond', on_delete=models.SET_NULL, null=True, default=None, blank=True)
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taker_bond = models.ForeignKey(LNPayment, related_name='taker_bond', on_delete=models.SET_NULL, null=True, default=None, blank=True)
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trade_escrow = models.ForeignKey(LNPayment, related_name='trade_escrow', on_delete=models.SET_NULL, null=True, default=None, blank=True)
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# buyer payment LN invoice
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buyer_invoice = models.ForeignKey(LNPayment, related_name='buyer_invoice', on_delete=models.SET_NULL, null=True, default=None, blank=True)
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# cancel LN invoice // these are only needed to charge lower-than-bond amounts. E.g., a taken order has a small cost if cancelled, to avoid DDOSing.
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maker_cancel = models.ForeignKey(LNPayment, related_name='maker_cancel', on_delete=models.SET_NULL, null=True, default=None, blank=True)
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taker_cancel = models.ForeignKey(LNPayment, related_name='taker_cancel', on_delete=models.SET_NULL, null=True, default=None, blank=True)
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def __str__(self):
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# Make relational back to ORDER
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return (f'Order {self.id}: {self.Types(self.type).label} BTC for {float(self.amount)} {self.currency_dict[str(self.currency)]}')
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@receiver(pre_delete, sender=Order)
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def delelete_HTLCs_at_order_deletion(sender, instance, **kwargs):
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to_delete = (instance.maker_bond, instance.buyer_invoice, instance.taker_bond, instance.trade_escrow)
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for htlc in to_delete:
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try:
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htlc.delete()
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except:
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pass
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class Profile(models.Model):
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user = models.OneToOneField(User,on_delete=models.CASCADE)
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# Ratings stored as a comma separated integer list
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total_ratings = models.PositiveIntegerField(null=False, default=0)
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latest_ratings = models.CharField(max_length=999, null=True, default=None, validators=[validate_comma_separated_integer_list], blank=True) # Will only store latest ratings
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avg_rating = models.DecimalField(max_digits=4, decimal_places=1, default=None, null=True, validators=[MinValueValidator(0), MaxValueValidator(100)], blank=True)
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# Disputes
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num_disputes = models.PositiveIntegerField(null=False, default=0)
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lost_disputes = models.PositiveIntegerField(null=False, default=0)
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# RoboHash
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avatar = models.ImageField(default="static/assets/misc/unknown_avatar.png", verbose_name='Avatar', blank=True)
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@receiver(post_save, sender=User)
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def create_user_profile(sender, instance, created, **kwargs):
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if created:
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Profile.objects.create(user=instance)
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@receiver(post_save, sender=User)
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def save_user_profile(sender, instance, **kwargs):
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instance.profile.save()
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@receiver(pre_delete, sender=User)
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def del_avatar_from_disk(sender, instance, **kwargs):
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avatar_file=Path('frontend/' + instance.profile.avatar.url)
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avatar_file.unlink() # FIX deleting user fails if avatar is not found
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def __str__(self):
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return self.user.username
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# to display avatars in admin panel
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def get_avatar(self):
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if not self.avatar:
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return 'static/assets/misc/unknown_avatar.png'
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return self.avatar.url
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# method to create a fake table field in read only mode
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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 MarketTick(models.Model):
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'''
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Records tick by tick Non-KYC Bitcoin price.
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Data to be aggregated and offered via public API.
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It is checked against current CEX price for useful
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insight on the historical premium of Non-KYC BTC
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Price is set when both taker bond is locked. Both
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maker and taker are commited with bonds (contract
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is finished and cancellation has a cost)
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'''
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price = models.DecimalField(max_digits=10, decimal_places=2, default=None, null=True, validators=[MinValueValidator(0)])
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volume = models.DecimalField(max_digits=8, decimal_places=8, default=None, null=True, validators=[MinValueValidator(0)])
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premium = models.DecimalField(max_digits=5, decimal_places=2, default=None, null=True, validators=[MinValueValidator(-100), MaxValueValidator(999)], blank=True)
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currency = models.PositiveSmallIntegerField(choices=Order.currency_choices, null=True)
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timestamp = models.DateTimeField(auto_now_add=True)
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# Relevant to keep record of the historical fee, so the insight on the premium can be better analyzed
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fee = models.DecimalField(max_digits=4, decimal_places=4, default=FEE, validators=[MinValueValidator(0), MaxValueValidator(1)])
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def log_a_tick(order):
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'''
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Creates a new tick
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'''
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if not order.taker_bond:
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return None
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elif order.taker_bond.status == LNPayment.Status.LOCKED:
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volume = order.last_satoshis / 100000000
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price = float(order.amount) / volume # Amount Fiat / Amount BTC
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premium = 100 * (price / get_exchange_rate(Order.currency_dict[str(order.currency)]) - 1)
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tick = MarketTick.objects.create(
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price=price,
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volume=volume,
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premium=premium,
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currency=order.currency)
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tick.save()
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def __str__(self):
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return f'Tick: {self.id}'
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