mirror of
https://github.com/RoboSats/robosats.git
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516 lines
23 KiB
Python
516 lines
23 KiB
Python
from re import T
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from django.db.models import query
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from rest_framework import status, viewsets
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from rest_framework.generics import CreateAPIView, ListAPIView
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from rest_framework.views import APIView
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from rest_framework.response import Response
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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, UpdateOrderSerializer
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from .models import LNPayment, MarketTick, Order, Currency
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from .logics import Logics
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from .utils import get_lnd_version, get_commit_robosats, compute_premium_percentile
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from .nick_generator.nick_generator import NickGenerator
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from robohash import Robohash
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from scipy.stats import entropy
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from math import log2
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import numpy as np
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import hashlib
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from pathlib import Path
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from datetime import timedelta, datetime
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from django.utils import timezone
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from decouple import config
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EXP_MAKER_BOND_INVOICE = int(config('EXP_MAKER_BOND_INVOICE'))
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FEE = float(config('FEE'))
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RETRY_TIME = int(config('RETRY_TIME'))
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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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# Create your views here.
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class MakerView(CreateAPIView):
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serializer_class = MakeOrderSerializer
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def post(self,request):
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serializer = self.serializer_class(data=request.data)
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if not serializer.is_valid(): return Response(status=status.HTTP_400_BAD_REQUEST)
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type = serializer.data.get('type')
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currency = serializer.data.get('currency')
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amount = serializer.data.get('amount')
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payment_method = serializer.data.get('payment_method')
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premium = serializer.data.get('premium')
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satoshis = serializer.data.get('satoshis')
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is_explicit = serializer.data.get('is_explicit')
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valid, context = Logics.validate_already_maker_or_taker(request.user)
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if not valid: return Response(context, status.HTTP_409_CONFLICT)
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# Creates a new order
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order = Order(
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type=type,
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currency=Currency.objects.get(id=currency),
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amount=amount,
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payment_method=payment_method,
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premium=premium,
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satoshis=satoshis,
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is_explicit=is_explicit,
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expires_at=timezone.now()+timedelta(seconds=EXP_MAKER_BOND_INVOICE), # TODO Move to class method
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maker=request.user)
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# TODO move to Order class method when new instance is created!
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order.last_satoshis = order.t0_satoshis = Logics.satoshis_now(order)
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valid, context = Logics.validate_order_size(order)
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if not valid: return Response(context, status.HTTP_400_BAD_REQUEST)
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order.save()
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return Response(ListOrderSerializer(order).data, status=status.HTTP_201_CREATED)
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class OrderView(viewsets.ViewSet):
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serializer_class = UpdateOrderSerializer
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lookup_url_kwarg = 'order_id'
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def get(self, request, format=None):
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'''
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Full trade pipeline takes place while looking/refreshing the order page.
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'''
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order_id = request.GET.get(self.lookup_url_kwarg)
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if not request.user.is_authenticated:
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return Response({'bad_request':'You must have a robot avatar to see the order details'}, status=status.HTTP_400_BAD_REQUEST)
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if order_id == None:
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return Response({'bad_request':'Order ID parameter not found in request'}, status=status.HTTP_400_BAD_REQUEST)
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order = Order.objects.filter(id=order_id)
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# check if exactly one order is found in the db
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if len(order) != 1 :
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return Response({'bad_request':'Invalid Order Id'}, status.HTTP_404_NOT_FOUND)
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# This is our order.
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order = order[0]
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# 2) If order has been cancelled
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if order.status == Order.Status.UCA:
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return Response({'bad_request':'This order has been cancelled by the maker'},status.HTTP_400_BAD_REQUEST)
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if order.status == Order.Status.CCA:
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return Response({'bad_request':'This order has been cancelled collaborativelly'},status.HTTP_400_BAD_REQUEST)
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data = ListOrderSerializer(order).data
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data['total_secs_exp'] = Order.t_to_expire[order.status]
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# if user is under a limit (penalty), inform him.
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is_penalized, time_out = Logics.is_penalized(request.user)
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if is_penalized:
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data['penalty'] = request.user.profile.penalty_expiration
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# Add booleans if user is maker, taker, partipant, buyer or seller
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data['is_maker'] = order.maker == request.user
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data['is_taker'] = order.taker == request.user
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data['is_participant'] = data['is_maker'] or data['is_taker']
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# 3.a) If not a participant and order is not public, forbid.
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if not data['is_participant'] and order.status != Order.Status.PUB:
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return Response({'bad_request':'You are not allowed to see this order'},status.HTTP_403_FORBIDDEN)
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# 3.b If order is between public and WF2
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if order.status >= Order.Status.PUB and order.status < Order.Status.WF2:
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data['price_now'], data['premium_now'] = Logics.price_and_premium_now(order)
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# 3. c) If maker and Public, add num robots in book, premium percentile and num similar orders.
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if data['is_maker'] and order.status == Order.Status.PUB:
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data['robots_in_book'] = None # TODO
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data['premium_percentile'] = compute_premium_percentile(order)
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data['num_similar_orders'] = len(Order.objects.filter(currency=order.currency, status=Order.Status.PUB))
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# 4) Non participants can view details (but only if PUB)
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elif not data['is_participant'] and order.status != Order.Status.PUB:
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return Response(data, status=status.HTTP_200_OK)
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# For participants add positions, nicks and status as a message and hold invoices status
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data['is_buyer'] = Logics.is_buyer(order,request.user)
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data['is_seller'] = Logics.is_seller(order,request.user)
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data['maker_nick'] = str(order.maker)
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data['taker_nick'] = str(order.taker)
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data['status_message'] = Order.Status(order.status).label
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data['is_fiat_sent'] = order.is_fiat_sent
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data['is_disputed'] = order.is_disputed
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data['ur_nick'] = request.user.username
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# Add whether hold invoices are LOCKED (ACCEPTED)
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# Is there a maker bond? If so, True if locked, False otherwise
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if order.maker_bond:
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data['maker_locked'] = order.maker_bond.status == LNPayment.Status.LOCKED
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else:
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data['maker_locked'] = False
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# Is there a taker bond? If so, True if locked, False otherwise
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if order.taker_bond:
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data['taker_locked'] = order.taker_bond.status == LNPayment.Status.LOCKED
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else:
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data['taker_locked'] = False
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# Is there an escrow? If so, True if locked, False otherwise
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if order.trade_escrow:
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data['escrow_locked'] = order.trade_escrow.status == LNPayment.Status.LOCKED
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else:
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data['escrow_locked'] = False
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# If both bonds are locked, participants can see the final trade amount in sats.
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if order.taker_bond:
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if order.maker_bond.status == order.taker_bond.status == LNPayment.Status.LOCKED:
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# Seller sees the amount he sends
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if data['is_seller']:
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data['trade_satoshis'] = order.last_satoshis
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# Buyer sees the amount he receives
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elif data['is_buyer']:
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data['trade_satoshis'] = Logics.payout_amount(order, request.user)[1]['invoice_amount']
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# 5) If status is 'waiting for maker bond' and user is MAKER, reply with a MAKER hold invoice.
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if order.status == Order.Status.WFB and data['is_maker']:
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valid, context = Logics.gen_maker_hold_invoice(order, request.user)
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if valid:
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data = {**data, **context}
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else:
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return Response(context, status.HTTP_400_BAD_REQUEST)
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# 6) If status is 'waiting for taker bond' and user is TAKER, reply with a TAKER hold invoice.
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elif order.status == Order.Status.TAK and data['is_taker']:
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valid, context = Logics.gen_taker_hold_invoice(order, request.user)
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if valid:
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data = {**data, **context}
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else:
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return Response(context, status.HTTP_400_BAD_REQUEST)
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# 7 a. ) If seller and status is 'WF2' or 'WFE'
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elif data['is_seller'] and (order.status == Order.Status.WF2 or order.status == Order.Status.WFE):
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# If the two bonds are locked, reply with an ESCROW hold invoice.
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if order.maker_bond.status == order.taker_bond.status == LNPayment.Status.LOCKED:
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valid, context = Logics.gen_escrow_hold_invoice(order, request.user)
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if valid:
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data = {**data, **context}
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else:
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return Response(context, status.HTTP_400_BAD_REQUEST)
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# 7.b) If user is Buyer and status is 'WF2' or 'WFI'
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elif data['is_buyer'] and (order.status == Order.Status.WF2 or order.status == Order.Status.WFI):
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# If the two bonds are locked, reply with an AMOUNT so he can send the buyer invoice.
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if order.maker_bond.status == order.taker_bond.status == LNPayment.Status.LOCKED:
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valid, context = Logics.payout_amount(order, request.user)
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if valid:
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data = {**data, **context}
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else:
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return Response(context, status.HTTP_400_BAD_REQUEST)
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# 8) If status is 'CHA' or 'FSE' and all HTLCS are in LOCKED
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elif order.status in [Order.Status.WFI, Order.Status.CHA, Order.Status.FSE]:
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# If all bonds are locked.
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if order.maker_bond.status == order.taker_bond.status == order.trade_escrow.status == LNPayment.Status.LOCKED:
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# add whether a collaborative cancel is pending or has been asked
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if (data['is_maker'] and order.taker_asked_cancel) or (data['is_taker'] and order.maker_asked_cancel):
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print('PENDING')
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data['pending_cancel'] = True
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elif (data['is_maker'] and order.maker_asked_cancel) or (data['is_taker'] and order.taker_asked_cancel):
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print('ASKED')
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data['asked_for_cancel'] = True
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else:
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data['asked_for_cancel'] = False
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# 9) If status is 'DIS' and all HTLCS are in LOCKED
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elif order.status == Order.Status.DIS:
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# add whether the dispute statement has been received
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if data['is_maker']:
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data['statement_submitted'] = (order.maker_statement != None and order.maker_statement != "")
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elif data['is_taker']:
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data['statement_submitted'] = (order.taker_statement != None and order.maker_statement != "")
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# 9) If status is 'Failed routing', reply with retry amounts, time of next retry and ask for invoice at third.
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elif order.status == Order.Status.FAI and order.payout.receiver == request.user: # might not be the buyer if after a dispute where winner wins
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data['retries'] = order.payout.routing_attempts
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data['next_retry_time'] = order.payout.last_routing_time + timedelta(minutes=RETRY_TIME)
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if order.payout.status == LNPayment.Status.EXPIRE:
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data['invoice_expired'] = True
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# Add invoice amount once again if invoice was expired.
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data['invoice_amount'] = int(order.last_satoshis * (1-FEE))
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return Response(data, status.HTTP_200_OK)
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def take_update_confirm_dispute_cancel(self, request, format=None):
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'''
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Here takes place all of the updates to the order object.
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That is: take, confim, cancel, dispute, update_invoice or rate.
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'''
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order_id = request.GET.get(self.lookup_url_kwarg)
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serializer = UpdateOrderSerializer(data=request.data)
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if not serializer.is_valid(): return Response(status=status.HTTP_400_BAD_REQUEST)
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order = Order.objects.get(id=order_id)
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# action is either 1)'take', 2)'confirm', 3)'cancel', 4)'dispute' , 5)'update_invoice'
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# 6)'submit_statement' (in dispute), 7)'rate' (counterparty)
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action = serializer.data.get('action')
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invoice = serializer.data.get('invoice')
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statement = serializer.data.get('statement')
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rating = serializer.data.get('rating')
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# 1) If action is take, it is a taker request!
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if action == 'take':
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if order.status == Order.Status.PUB:
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valid, context = Logics.validate_already_maker_or_taker(request.user)
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if not valid: return Response(context, status=status.HTTP_409_CONFLICT)
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valid, context = Logics.take(order, request.user)
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if not valid: return Response(context, status=status.HTTP_403_FORBIDDEN)
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return self.get(request)
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else: Response({'bad_request':'This order is not public anymore.'}, status.HTTP_400_BAD_REQUEST)
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# Any other action is only allowed if the user is a participant
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if not (order.maker == request.user or order.taker == request.user):
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return Response({'bad_request':'You are not a participant in this order'}, status.HTTP_403_FORBIDDEN)
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# 2) If action is 'update invoice'
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if action == 'update_invoice' and invoice:
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valid, context = Logics.update_invoice(order,request.user,invoice)
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if not valid: return Response(context, status.HTTP_400_BAD_REQUEST)
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# 3) If action is cancel
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elif action == 'cancel':
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valid, context = Logics.cancel_order(order,request.user)
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if not valid: return Response(context, status.HTTP_400_BAD_REQUEST)
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# 4) If action is confirm
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elif action == 'confirm':
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valid, context = Logics.confirm_fiat(order,request.user)
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if not valid: return Response(context, status.HTTP_400_BAD_REQUEST)
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# 5) If action is dispute
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elif action == 'dispute':
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valid, context = Logics.open_dispute(order,request.user)
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if not valid: return Response(context, status.HTTP_400_BAD_REQUEST)
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elif action == 'submit_statement':
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valid, context = Logics.dispute_statement(order,request.user, statement)
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if not valid: return Response(context, status.HTTP_400_BAD_REQUEST)
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# 6) If action is rate
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elif action == 'rate' and rating:
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valid, context = Logics.rate_counterparty(order,request.user, rating)
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if not valid: return Response(context, status.HTTP_400_BAD_REQUEST)
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# If nothing of the above... something else is going on. Probably not allowed!
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else:
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return Response(
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{'bad_request':
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'The Robotic Satoshis working in the warehouse did not understand you. ' +
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'Please, fill a Bug Issue in Github https://github.com/reckless-satoshi/robosats/issues'},
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status.HTTP_501_NOT_IMPLEMENTED)
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return self.get(request)
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class UserView(APIView):
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lookup_url_kwarg = 'token'
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NickGen = NickGenerator(
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lang='English',
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use_adv=False,
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use_adj=True,
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use_noun=True,
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max_num=999)
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# Probably should be turned into a post method
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def get(self,request, format=None):
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'''
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Get a new user derived from a high entropy token
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- Request has a high-entropy token,
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- Generates new nickname and avatar.
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- Creates login credentials (new User object)
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Response with Avatar and Nickname.
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'''
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# If an existing user opens the main page by mistake, we do not want it to create a new nickname/profile for him
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if request.user.is_authenticated:
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context = {'nickname': request.user.username}
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not_participant, _ = Logics.validate_already_maker_or_taker(request.user)
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# Does not allow this 'mistake' if an active order
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if not not_participant:
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context['bad_request'] = f'You are already logged in as {request.user} and have an active order'
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return Response(context, status.HTTP_400_BAD_REQUEST)
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# Does not allow this 'mistake' if the last login was sometime ago (5 minutes)
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# if request.user.last_login < timezone.now() - timedelta(minutes=5):
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# context['bad_request'] = f'You are already logged in as {request.user}'
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# return Response(context, status.HTTP_400_BAD_REQUEST)
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token = request.GET.get(self.lookup_url_kwarg)
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# Compute token entropy
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value, counts = np.unique(list(token), return_counts=True)
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shannon_entropy = entropy(counts, base=62)
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bits_entropy = log2(len(value)**len(token))
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# Payload
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context = {'token_shannon_entropy': shannon_entropy, 'token_bits_entropy': bits_entropy}
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# Deny user gen if entropy below 128 bits or 0.7 shannon heterogeneity
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if bits_entropy < 128 or shannon_entropy < 0.7:
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context['bad_request'] = 'The token does not have enough entropy'
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return Response(context, status=status.HTTP_400_BAD_REQUEST)
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# Hash the token, only 1 iteration.
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hash = hashlib.sha256(str.encode(token)).hexdigest()
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# Generate nickname deterministically
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nickname = self.NickGen.short_from_SHA256(hash, max_length=18)[0]
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context['nickname'] = nickname
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# Generate avatar
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rh = Robohash(hash)
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rh.assemble(roboset='set1', bgset='any')# for backgrounds ON
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# Does not replace image if existing (avoid re-avatar in case of nick collusion)
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image_path = avatar_path.joinpath(nickname+".png")
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if not image_path.exists():
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with open(image_path, "wb") as f:
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rh.img.save(f, format="png")
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# Create new credentials and login if nickname is new
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if len(User.objects.filter(username=nickname)) == 0:
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User.objects.create_user(username=nickname, password=token, is_staff=False)
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user = authenticate(request, username=nickname, password=token)
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user.profile.avatar = str(image_path)[9:] # removes frontend/ from url (ugly, to be fixed)
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login(request, user)
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return Response(context, status=status.HTTP_201_CREATED)
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else:
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user = authenticate(request, username=nickname, password=token)
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if user is not None:
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login(request, user)
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# Sends the welcome back message, only if created +30 mins ago
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if request.user.date_joined < (timezone.now()-timedelta(minutes=30)):
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context['found'] = 'We found your Robosat. Welcome back!'
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return Response(context, status=status.HTTP_202_ACCEPTED)
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else:
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# It is unlikely, but maybe the nickname is taken (1 in 20 Billion change)
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context['found'] = 'Bad luck, this nickname is taken'
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context['bad_request'] = 'Enter a different token'
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return Response(context, status.HTTP_403_FORBIDDEN)
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def delete(self,request):
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''' Pressing "give me another" deletes the logged in user '''
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user = request.user
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if not user:
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return Response(status.HTTP_403_FORBIDDEN)
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# Only delete if user life is shorter than 30 minutes. Helps deleting users by mistake
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if user.date_joined < (timezone.now() - timedelta(minutes=30)):
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return Response(status.HTTP_400_BAD_REQUEST)
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# Check if it is not a maker or taker!
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if not Logics.validate_already_maker_or_taker(user):
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return Response({'bad_request':'User cannot be deleted while he is part of an order'}, status.HTTP_400_BAD_REQUEST)
|
|
|
|
logout(request)
|
|
user.delete()
|
|
return Response({'user_deleted':'User deleted permanently'}, status.HTTP_301_MOVED_PERMANENTLY)
|
|
|
|
class BookView(ListAPIView):
|
|
serializer_class = ListOrderSerializer
|
|
queryset = Order.objects.filter(status=Order.Status.PUB)
|
|
|
|
def get(self,request, format=None):
|
|
currency = request.GET.get('currency')
|
|
type = request.GET.get('type')
|
|
|
|
queryset = Order.objects.filter(status=Order.Status.PUB)
|
|
|
|
# Currency 0 and type 2 are special cases treated as "ANY". (These are not really possible choices)
|
|
if int(currency) == 0 and int(type) != 2:
|
|
queryset = Order.objects.filter(type=type, status=Order.Status.PUB)
|
|
elif int(type) == 2 and int(currency) != 0:
|
|
queryset = Order.objects.filter(currency=currency, status=Order.Status.PUB)
|
|
elif not (int(currency) == 0 and int(type) == 2):
|
|
queryset = Order.objects.filter(currency=currency, type=type, status=Order.Status.PUB)
|
|
|
|
if len(queryset)== 0:
|
|
return Response({'not_found':'No orders found, be the first to make one'}, status=status.HTTP_404_NOT_FOUND)
|
|
|
|
# queryset = queryset.order_by('created_at')
|
|
book_data = []
|
|
for order in queryset:
|
|
data = ListOrderSerializer(order).data
|
|
data['maker_nick'] = str(order.maker)
|
|
|
|
# Compute current premium for those orders that are explicitly priced.
|
|
data['price'], data['premium'] = Logics.price_and_premium_now(order)
|
|
|
|
for key in ('status','taker'): # Non participants should not see the status or who is the taker
|
|
del data[key]
|
|
|
|
book_data.append(data)
|
|
|
|
return Response(book_data, status=status.HTTP_200_OK)
|
|
|
|
class InfoView(ListAPIView):
|
|
|
|
def get(self, request):
|
|
context = {}
|
|
|
|
context['num_public_buy_orders'] = len(Order.objects.filter(type=Order.Types.BUY, status=Order.Status.PUB))
|
|
context['num_public_sell_orders'] = len(Order.objects.filter(type=Order.Types.SELL, status=Order.Status.PUB))
|
|
|
|
# Number of active users (logged in in last 30 minutes)
|
|
today = datetime.today()
|
|
context['active_robots_today'] = len(User.objects.filter(last_login__day=today.day))
|
|
|
|
# Compute average premium and volume of today
|
|
queryset = MarketTick.objects.filter(timestamp__day=today.day)
|
|
if not len(queryset) == 0:
|
|
weighted_premiums = []
|
|
volumes = []
|
|
for tick in queryset:
|
|
weighted_premiums.append(tick.premium*tick.volume)
|
|
volumes.append(tick.volume)
|
|
|
|
total_volume = sum(volumes)
|
|
# Avg_premium is the weighted average of the premiums by volume
|
|
avg_premium = sum(weighted_premiums) / total_volume
|
|
else:
|
|
avg_premium = 0
|
|
total_volume = 0
|
|
|
|
queryset = MarketTick.objects.all()
|
|
if not len(queryset) == 0:
|
|
volume_settled = []
|
|
for tick in queryset:
|
|
volume_settled.append(tick.volume)
|
|
lifetime_volume_settled = int(sum(volume_settled)*100000000)
|
|
else:
|
|
lifetime_volume_settled = 0
|
|
|
|
context['today_avg_nonkyc_btc_premium'] = round(avg_premium,2)
|
|
context['today_total_volume'] = total_volume
|
|
context['lifetime_satoshis_settled'] = lifetime_volume_settled
|
|
context['lnd_version'] = get_lnd_version()
|
|
context['robosats_running_commit_hash'] = get_commit_robosats()
|
|
context['fee'] = FEE
|
|
context['bond_size'] = float(config('BOND_SIZE'))
|
|
|
|
return Response(context, status.HTTP_200_OK)
|
|
|
|
|