Premium percentile computing

api/utils.py

@@ -3,6 +3,8 @@ import requests, ring, os
 from decouple import config
 import numpy as np
 
+from api.models import Order
+
 market_cache = {}
 
 @ring.dict(market_cache, expire=3) #keeps in cache for 3 seconds
@@ -49,7 +51,6 @@ def get_exchange_rates(currencies):
     return median_rates.tolist()
 
 lnd_v_cache = {}
-
 @ring.dict(lnd_v_cache, expire=3600) #keeps in cache for 3600 seconds
 def get_lnd_version():
 
@@ -59,7 +60,6 @@ def get_lnd_version():
     return lnd_version
 
 robosats_commit_cache = {}
-
 @ring.dict(robosats_commit_cache, expire=3600)
 def get_commit_robosats():
 
@@ -67,4 +67,22 @@ def get_commit_robosats():
     lnd_version = stream.read()
 
     return lnd_version
+
+premium_percentile = {}
+@ring.dict(premium_percentile, expire=300)
+def compute_premium_percentile(order):
+
+    queryset = Order.objects.filter(currency=order.currency, status=Order.Status.PUB)
+
+    print(len(queryset))
+    if len(queryset) <= 1:
+        return 0.5
+
+    order_rate = float(order.last_satoshis) / float(order.amount)
+    rates = []
+    for similar_order in queryset:
+        rates.append(float(similar_order.last_satoshis) / float(similar_order.amount))
+    
+    rates = np.array(rates)
+    return round(np.sum(rates < order_rate) / len(rates),2)
     

api/views.py

@@ -11,7 +11,7 @@ from django.contrib.auth.models import User
 from .serializers import ListOrderSerializer, MakeOrderSerializer, UpdateOrderSerializer
 from .models import LNPayment, MarketTick, Order, Currency
 from .logics import Logics
-from .utils import get_lnd_version, get_commit_robosats
+from .utils import get_lnd_version, get_commit_robosats, compute_premium_percentile
 
 from .nick_generator.nick_generator import NickGenerator
 from robohash import Robohash
@@ -125,7 +125,7 @@ class OrderView(viewsets.ViewSet):
              # 3. c) If maker and Public, add num robots in book, premium percentile and num similar orders.
             if data['is_maker'] and order.status == Order.Status.PUB:
                 data['robots_in_book'] = None       # TODO
-                data['premium_percentile'] = None   # TODO
+                data['premium_percentile'] = compute_premium_percentile(order)
                 data['num_similar_orders'] = len(Order.objects.filter(currency=order.currency, status=Order.Status.PUB))
         
         # 4) Non participants can view details (but only if PUB)
@@ -326,9 +326,9 @@ class UserView(APIView):
                 return Response(context, status.HTTP_400_BAD_REQUEST)
             
             # Does not allow this 'mistake' if the last login was sometime ago (5 minutes)
-            if request.user.last_login < timezone.now() - timedelta(minutes=5):
+            # if request.user.last_login < timezone.now() - timedelta(minutes=5):
-                context['bad_request'] = f'You are already logged in as {request.user}'
+            #     context['bad_request'] = f'You are already logged in as {request.user}'
-                return Response(context, status.HTTP_400_BAD_REQUEST)
+            #     return Response(context, status.HTTP_400_BAD_REQUEST)
 
         token = request.GET.get(self.lookup_url_kwarg)
 

frontend/src/components/TradeBox.js

@@ -256,7 +256,7 @@ export default class TradeBox extends Component {
                 <ListItemIcon>
                   <SmartToyIcon/>
                 </ListItemIcon>
-                <ListItemText primary={999} secondary="Robots looking at the book"/>
+                <ListItemText primary={'000 coming soon'} secondary="Robots looking at the book"/>
               </ListItem>
 
             <Divider/>
@@ -272,7 +272,8 @@ export default class TradeBox extends Component {
               <ListItemIcon>
                 <PercentIcon/>
               </ListItemIcon>
-                <ListItemText primary="33%" secondary="Premium percentile" />
+                <ListItemText primary={"Premium rank " + this.props.data.premiumPercentile*100+"%"} 
+                  secondary={"Among public " + this.props.data.currencyCode + " orders (higher is cheaper)"} />
               </ListItem>
             <Divider/>