Make payment_hash the primary key of LNpayment model

api/admin.py

@@ -22,6 +22,7 @@ class EUserAdmin(UserAdmin):
     def avatar_tag(self, obj):
         return obj.profile.avatar_tag()
 
+
 @admin.register(Order)
 class OrderAdmin(AdminChangeLinksMixin, admin.ModelAdmin):
     list_display = ('id','type','maker_link','taker_link','status','amount','currency_link','t0_satoshis','is_disputed','is_fiat_sent','created_at','expires_at', 'buyer_invoice_link','maker_bond_link','taker_bond_link','trade_escrow_link')
@@ -31,8 +32,8 @@ class OrderAdmin(AdminChangeLinksMixin, admin.ModelAdmin):
 
 @admin.register(LNPayment)
 class LNPaymentAdmin(AdminChangeLinksMixin, admin.ModelAdmin):
-    list_display = ('id','concept','status','num_satoshis','type','expires_at','sender_link','receiver_link','order_made','order_taken','order_escrow','order_paid')
-    list_display_links = ('id','concept','order_made','order_taken','order_escrow','order_paid')
+    list_display = ('hash','concept','status','num_satoshis','type','expires_at','sender_link','receiver_link','order_made','order_taken','order_escrow','order_paid')
+    list_display_links = ('hash','concept','order_made','order_taken','order_escrow','order_paid')
     change_links = ('sender','receiver')
     list_filter = ('type','concept','status')
 

api/management/commands/follow_invoices.py

@@ -97,23 +97,31 @@ class Command(BaseCommand):
     def update_order_status(self, lnpayment):
         ''' Background process following LND hold invoices
         can catch LNpayments changing status. If they do,
-        the order status might have to change status too.'''
+        the order status might have to change too.'''
 
         # If the LNPayment goes to LOCKED (ACCEPTED)
         if lnpayment.status == LNPayment.Status.LOCKED:
 
-            # It is a maker bond => Publish order.
-            if not lnpayment.order_made == None:
-                Logics.publish_order(lnpayment.order_made)
-                return
-
-            # It is a taker bond => close contract.
-            elif not lnpayment.order_taken == None:
-                if lnpayment.order_taken.status == Order.Status.TAK:
-                    Logics.finalize_contract(lnpayment.order_taken)
+            try:
+                # It is a maker bond => Publish order.
+                if not lnpayment.order_made == None:
+                    Logics.publish_order(lnpayment.order_made)
                     return
 
-            # It is a trade escrow => move foward order status.
-            elif not lnpayment.order_escrow == None:
-                Logics.trade_escrow_received(lnpayment.order_escrow)
-                return
+                # It is a taker bond => close contract.
+                elif not lnpayment.order_taken == None:
+                    if lnpayment.order_taken.status == Order.Status.TAK:
+                        Logics.finalize_contract(lnpayment.order_taken)
+                        return
+
+                # It is a trade escrow => move foward order status.
+                elif not lnpayment.order_escrow == None:
+                    Logics.trade_escrow_received(lnpayment.order_escrow)
+                    return
+            except Exception as e:
+                self.stdout.write(str(e))
+
+        # TODO If an lnpayment goes from LOCKED to INVGED. Totally weird
+        # halt the order
+        if lnpayment.status == LNPayment.Status.LOCKED:
+            pass

api/models.py

@@ -2,6 +2,7 @@ from django.db import models
 from django.contrib.auth.models import User
 from django.core.validators import MaxValueValidator, MinValueValidator, validate_comma_separated_integer_list
 from django.db.models.signals import post_save, pre_delete
+from django.template.defaultfilters import truncatechars
 from django.dispatch import receiver
 from django.utils.html import mark_safe
 import uuid
@@ -59,15 +60,14 @@ class LNPayment(models.Model):
         
 
     # payment use details
-    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
     type = models.PositiveSmallIntegerField(choices=Types.choices, null=False, default=Types.HOLD)
     concept = models.PositiveSmallIntegerField(choices=Concepts.choices, null=False, default=Concepts.MAKEBOND)
     status = models.PositiveSmallIntegerField(choices=Status.choices, null=False, default=Status.INVGEN)
     routing_retries = models.PositiveSmallIntegerField(null=False, default=0)
     
     # payment info
+    payment_hash = models.CharField(max_length=100, unique=True, default=None, blank=True, primary_key=True)
     invoice = models.CharField(max_length=1200, unique=True, null=True, default=None, blank=True) # Some invoices with lots of routing hints might be long
-    payment_hash = models.CharField(max_length=100, unique=True, null=True, default=None, blank=True)
     preimage = models.CharField(max_length=64, unique=True, null=True, default=None, blank=True)
     description = models.CharField(max_length=500, unique=False, null=True, default=None, blank=True)
     num_satoshis = models.PositiveBigIntegerField(validators=[MinValueValidator(MIN_TRADE*BOND_SIZE), MaxValueValidator(MAX_TRADE*(1+BOND_SIZE+FEE))])
@@ -79,12 +79,19 @@ class LNPayment(models.Model):
     receiver = models.ForeignKey(User, related_name='receiver', on_delete=models.CASCADE, null=True, default=None)
 
     def __str__(self):
-        return (f'LN-{str(self.id)[:8]}: {self.Concepts(self.concept).label} - {self.Status(self.status).label}')
+        return (f'LN-{str(self.payment_hash)[:8]}: {self.Concepts(self.concept).label} - {self.Status(self.status).label}')
 
     class Meta:
         verbose_name = 'Lightning payment'
         verbose_name_plural = 'Lightning payments'
 
+    @property
+    def hash(self):
+        # Payment hash is the primary key of LNpayments
+        # However it is too long for the admin panel.
+        # We created a truncated property for display 'hash'
+        return truncatechars(self.payment_hash, 10)
+
 class Order(models.Model):
     
     class Types(models.IntegerChoices):
@@ -141,8 +148,8 @@ class Order(models.Model):
 
     # in dispute
     is_disputed = models.BooleanField(default=False, null=False)
-    maker_statement = models.TextField(max_length=5000, unique=True, null=True, default=None, blank=True)
-    taker_statement = models.TextField(max_length=5000, unique=True, null=True, default=None, blank=True)
+    maker_statement = models.TextField(max_length=5000, null=True, default=None, blank=True)
+    taker_statement = models.TextField(max_length=5000, null=True, default=None, blank=True)
 
     # LNpayments
     # Order collateral