Add invoice_for_payment_hash query.

lightspark/lightspark_client.py

@@ -90,6 +90,7 @@
 from lightspark.scripts.incoming_payments_for_invoice import (
     INCOMING_PAYMENTS_FOR_INVOICE_QUERY,
 )
+from lightspark.scripts.invoice_for_payment_hash import INVOICE_FOR_PAYMENT_HASH_QUERY
 from lightspark.scripts.lightning_fee_estimate_for_invoice import (
     LIGHTNING_FEE_ESTIMATE_FOR_INVOICE_QUERY,
 )
@@ -781,6 +782,26 @@ def incoming_payments_for_invoice(
         )
         return output.payments
 
+    def invoice_for_payment_hash(
+        self,
+        payment_hash: str,
+    ) -> Optional[Invoice]:
+        """
+        Fetches the invoice (if any) which have been created with a given payment hash.
+        """
+
+        json = self._requester.execute_graphql(
+            INVOICE_FOR_PAYMENT_HASH_QUERY,
+            {"payment_hash": payment_hash},
+        )
+        if "invoice_for_payment_hash" not in json:
+            return None
+        if "invoice" not in json["invoice_for_payment_hash"]:
+            return None
+        return Invoice_from_json(
+            self._requester, json["invoice_for_payment_hash"]["invoice"]
+        )
+
     def create_uma_invitation(
         self,
         inviter_uma: str,

lightspark/scripts/invoice_for_payment_hash.py

@@ -0,0 +1,17 @@
+# Copyright ©, 2022-present, Lightspark Group, Inc. - All Rights Reserved
+
+from lightspark.objects.Invoice import FRAGMENT as InvoiceFragment
+
+INVOICE_FOR_PAYMENT_HASH_QUERY = f"""
+query InvoiceForPaymentHash($payment_hash: Hash32!) {{
+	invoice_for_payment_hash(input: {{
+		payment_hash: $payment_hash
+	}}) {{
+		invoice {{
+			...InvoiceFragment
+		}}
+	}}
+}}
+
+{InvoiceFragment}
+"""