Feature/binance chain integration

app/dashboard/management/commands/sync_pending_fulfillments.py

@@ -47,6 +47,11 @@ def handle(self, *args, **options):
             for fulfillment in polkadot_pending_fulfillments.all():
                 sync_payout(fulfillment)
 
+        # binance extension
+        binance_pending_fulfillments = pending_fulfillments.filter(payout_type='binance_ext')
+        if binance_pending_fulfillments:
+            for fulfillment in binance_pending_fulfillments.all():
+                sync_payout(fulfillment)
 
         # QR
         qr_pending_fulfillments = pending_fulfillments.filter(payout_type='qr')

app/dashboard/migrations/0157_auto_20201021_2319.py

@@ -0,0 +1,23 @@
+# Generated by Django 2.2.4 on 2020-10-21 23:19
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dashboard', '0156_auto_20201015_1742'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='bounty',
+            name='web3_type',
+            field=models.CharField(choices=[('legacy_gitcoin', 'Legacy Bounty'), ('bounties_network', 'Bounties Network'), ('qr', 'QR Code'), ('web3_modal', 'Web3 Modal'), ('polkadot_ext', 'Polkadot Ext'), ('binance_ext', 'Binance Ext'), ('fiat', 'Fiat'), ('manual', 'Manual')], default='bounties_network', max_length=50),
+        ),
+        migrations.AlterField(
+            model_name='bountyfulfillment',
+            name='payout_type',
+            field=models.CharField(blank=True, choices=[('bounties_network', 'bounties_network'), ('qr', 'qr'), ('fiat', 'fiat'), ('web3_modal', 'web3_modal'), ('polkadot_ext', 'polkadot_ext'), ('binance_ext', 'binance_ext'), ('manual', 'manual')], help_text='payment type used to make the payment', max_length=20, null=True),
+        ),
+    ]

app/dashboard/models.py

@@ -290,6 +290,7 @@ class Bounty(SuperModel):
         ('qr', 'QR Code'),
         ('web3_modal', 'Web3 Modal'),
         ('polkadot_ext', 'Polkadot Ext'),
+        ('binance_ext', 'Binance Ext'),
         ('fiat', 'Fiat'),
         ('manual', 'Manual')
     )
@@ -1399,6 +1400,7 @@ class BountyFulfillment(SuperModel):
         ('fiat', 'fiat'),
         ('web3_modal', 'web3_modal'),
         ('polkadot_ext', 'polkadot_ext'),
+        ('binance_ext', 'binance_ext'),
         ('manual', 'manual')
     ]
 

app/dashboard/sync/binance.py

@@ -0,0 +1,69 @@
+import logging
+
+from django.utils import timezone
+
+import requests
+from dashboard.sync.helpers import record_payout_activity
+
+logger = logging.getLogger(__name__)
+
+headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0. 2272.118 Safari/537.36.'}
+
+
+def get_binance_txn_status(fulfillment):
+
+    txnid = fulfillment.payout_tx_id
+    network = fulfillment.bounty.network if fulfillment.bounty.network else None
+
+    if not txnid:
+        return None
+
+    response = { 'status': 'pending' }
+
+    try:
+        if network == 'mainnet':
+            binance_url = f'https://bsc-dataseed.binance.org'
+        else:
+            binance_url = f'https://data-seed-prebsc-1-s1.binance.org:8545'
+
+        data = {
+            'jsonrpc': '2.0',
+            'method': 'eth_getTransactionReceipt',
+            'params': [ txnid ],
+            'id': 0
+        }
+
+        binance_response = requests.post(binance_url, json=data, headers=headers).json()
+
+        result = binance_response['result']
+
+        response = { 'status': 'pending' }
+
+        if result:
+            tx_status = int(result.get('status'), 16) # convert hex to decimal
+
+            if tx_status == '1':
+                response = { 'status': 'done' }
+            elif tx_status == '0':
+                response = { 'status': 'expired' }
+
+    except Exception as e:
+        logger.error(f'error: get_binance_txn_status - {e}')
+
+    finally:
+        return response
+
+
+def sync_binance_payout(fulfillment):
+    if fulfillment.payout_tx_id:
+        txn_status = get_binance_txn_status(fulfillment)
+        if txn_status:
+            if txn_status.get('status') == 'done':
+                fulfillment.payout_status = 'done'
+                fulfillment.accepted_on = timezone.now()
+                fulfillment.accepted = True
+                record_payout_activity(fulfillment)
+            elif txn_status.get('status') == 'expired':
+                fulfillment.payout_status = 'expired'
+
+        fulfillment.save()

app/dashboard/utils.py

@@ -37,6 +37,7 @@
 from dashboard.models import (
     Activity, BlockedUser, Bounty, BountyFulfillment, HackathonRegistration, Profile, UserAction,
 )
+from dashboard.sync.binance import sync_binance_payout
 from dashboard.sync.btc import sync_btc_payout
 from dashboard.sync.celo import sync_celo_payout
 from dashboard.sync.etc import sync_etc_payout
@@ -511,7 +512,10 @@ def sync_payout(fulfillment):
             sync_filecoin_payout(fulfillment)
 
     elif fulfillment.payout_type == 'polkadot_ext':
-         sync_polkadot_payout(fulfillment)
+        sync_polkadot_payout(fulfillment)
+
+    elif fulfillment.payout_type == 'binance_ext':
+        sync_binance_payout(fulfillment)
 
 
 def get_bounty_id(issue_url, network):