feat: update account when join invoce paid

tasks.py

@@ -0,0 +1,48 @@
+import asyncio
+import re
+
+from loguru import logger
+
+from lnbits.core.models import Payment
+from lnbits.extensions.nostrrelay.models import NostrAccount
+from lnbits.helpers import get_current_extension_name
+from lnbits.tasks import register_invoice_listener
+
+from .crud import create_account, get_account, update_account
+
+
+async def wait_for_paid_invoices():
+    invoice_queue = asyncio.Queue()
+    register_invoice_listener(invoice_queue, get_current_extension_name())
+
+    while True:
+        payment = await invoice_queue.get()
+        await on_invoice_paid(payment)
+
+
+async def on_invoice_paid(payment: Payment):
+    if payment.extra.get("tag") != "nostrrely":
+        return
+
+    relay_id = payment.extra.get("relay_id")
+    pubkey = payment.extra.get("pubkey")
+
+    if payment.extra.get("action") == "join":
+        await invoice_paid_to_join(relay_id, pubkey)
+        return
+
+async def invoice_paid_to_join(relay_id: str, pubkey: str):
+    try:
+        account = await get_account(relay_id, pubkey)
+        if not account:
+            await create_account(relay_id, NostrAccount(pubkey=pubkey, paid_to_join=True))
+            return
+        
+        if account.blocked or account.paid_to_join:
+            return
+
+        account.paid_to_join = True
+        await update_account(relay_id, account)
+
+    except Exception as ex:
+        logger.warning(ex)