fix: LNbits backend wallet

lnbits/wallets/lnbits.py

@@ -1,7 +1,9 @@
-from requests import get, post
 from os import getenv
+from requests import get, post
+
 from .base import InvoiceResponse, PaymentResponse, PaymentStatus, Wallet
 
+
 class LnbitsWallet(Wallet):
 
     def __init__(self):
@@ -22,6 +24,7 @@ class LnbitsWallet(Wallet):
             checking_id, payment_request = data["checking_id"], data["payment_request"]
         else:
             error_message = r.json()["message"]
+
         return InvoiceResponse(ok, checking_id, payment_request, error_message)
 
     def pay_invoice(self, bolt11: str) -> PaymentResponse:
@@ -37,12 +40,21 @@ class LnbitsWallet(Wallet):
             checking_id = data["checking_id"]
         else:
             error_message = r.json()["message"]
-        return InvoiceResponse(ok, checking_id, fee_msat, error_message)
+
+        return PaymentResponse(ok, checking_id, fee_msat, error_message)
 
     def get_invoice_status(self, checking_id: str) -> PaymentStatus:
         r = get(url=f"{self.endpoint}/api/v1/payments/{checking_id}", headers=self.auth_invoice)
-        return PaymentStatus(r['paid'])
+
+        if not r.ok:
+            return PaymentStatus(None)
+
+        return PaymentStatus(r.json()['paid'])
 
     def get_payment_status(self, checking_id: str) -> PaymentStatus:
         r = get(url=f"{self.endpoint}/api/v1/payments/{checking_id}", headers=self.auth_invoice)
-        return PaymentStatus(r['paid'])
+
+        if not r.ok:
+            return PaymentStatus(None)
+
+        return PaymentStatus(r.json()['paid'])