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76a45bc8d5
Added the Order model with a rough approxiation to the fields needed. The field status can be read lineally as the progression trough the app pipeline. The view serves POSTs requests to enter new orders into the db.
72 lines
3.2 KiB
Python
72 lines
3.2 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
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#############################
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# TODO
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# Load hparams from .env file
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min_satoshis_trade = 10*1000
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max_satoshis_trade = 500*1000
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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 Currencies(models.IntegerChoices):
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USD = 1, 'USD'
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EUR = 2, 'EUR'
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ETH = 3, 'ETH'
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class Status(models.TextChoices):
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WFB = 0, 'Waiting for bond'
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PUB = 1, 'Published in order book'
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DEL = 2, 'Deleted from order book'
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TAK = 3, 'Taken'
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UCA = 4, 'Unilaterally cancelled'
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RET = 5, 'Returned to order book' # Probably same as 1 in most cases.
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WF2 = 6, 'Waiting for trade collateral and buyer invoice'
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WTC = 7, 'Waiting only for trade collateral'
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WBI = 8, 'Waiting only for buyer invoice'
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EXF = 9, 'Exchanging fiat / In chat'
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CCA = 10, 'Collaboratively cancelled'
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FSE = 11, 'Fiat sent'
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FCO = 12, 'Fiat confirmed'
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SUC = 13, 'Sucessfully settled'
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FAI = 14, 'Failed lightning network routing'
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UPI = 15, 'Updated invoice'
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DIS = 16, 'In dispute'
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MLD = 17, 'Maker lost dispute'
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TLD = 18, 'Taker lost dispute'
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EXP = 19, 'Expired'
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# order info, id = models.CharField(max_length=64, unique=True, null=False)
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status = models.PositiveSmallIntegerField(choices=Status.choices, default=Status.WFB)
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created_at = models.DateTimeField(auto_now_add=True)
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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=Currencies.choices, null=False)
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amount = models.DecimalField(max_digits=9, decimal_places=4, validators=[MinValueValidator(0.00001)])
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premium = models.DecimalField(max_digits=3, decimal_places=2, default=0, null=True, validators=[MinValueValidator(-100), MaxValueValidator(1000)])
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satoshis = models.PositiveBigIntegerField(null=True, validators=[MinValueValidator(min_satoshis_trade), MaxValueValidator(max_satoshis_trade)])
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# order participants
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maker = models.ForeignKey(User, related_name='maker', on_delete=models.SET_NULL, 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) # unique = True, a taker can only take one order
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# order collateral
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has_maker_bond = models.BooleanField(default=False, null=False)
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has_taker_bond = models.BooleanField(default=False, null=False)
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has_trade_collat = models.BooleanField(default=False, null=False)
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maker_bond_secret = models.CharField(max_length=300, unique=False, null=True, default=None)
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taker_bond_secret = models.CharField(max_length=300, unique=False, null=True, default=None)
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trade_collat_secret = models.CharField(max_length=300, unique=False, null=True, default=None)
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# buyer payment LN invoice
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has_invoice = models.BooleanField(default=False, null=False) # has invoice and is valid
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invoice = models.CharField(max_length=300, unique=False, null=True, default=None)
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