Wallets/unhashed_description (#870)

* new argument: unhashed_description

* accept in api

* set unhashed_description for memo case

* bolt11.py: dont be like CLN, accept the hash

* send hash to lnd in b64

* fix cln

* skip descr_hash for cln

* skip

* format

tests/core/views/test_api.py

@@ -11,6 +11,7 @@ from lnbits.core.views.api import (
     api_payment,
     api_payments_create_invoice,
 )
+from lnbits.settings import wallet_class
 
 from ...helpers import get_random_invoice_data
 
@@ -192,11 +193,32 @@ async def test_api_payment_with_key(invoice, inkey_headers_from):
 
 
 # check POST /api/v1/payments: invoice creation with a description hash
+@pytest.mark.skipif(
+    wallet_class.__name__ in ["CoreLightningWallet"],
+    reason="wallet does not support description_hash",
+)
 @pytest.mark.asyncio
 async def test_create_invoice_with_description_hash(client, inkey_headers_to):
     data = await get_random_invoice_data()
     descr_hash = hashlib.sha256("asdasdasd".encode("utf-8")).hexdigest()
-    data["description_hash"] = "asdasdasd".encode("utf-8").hex()
+    data["description_hash"] = descr_hash
+
+    response = await client.post(
+        "/api/v1/payments", json=data, headers=inkey_headers_to
+    )
+    invoice = response.json()
+
+    invoice_bolt11 = bolt11.decode(invoice["payment_request"])
+    assert invoice_bolt11.description_hash == descr_hash
+    assert invoice_bolt11.description is None
+    return invoice
+
+
+@pytest.mark.asyncio
+async def test_create_invoice_with_unhashed_description(client, inkey_headers_to):
+    data = await get_random_invoice_data()
+    descr_hash = hashlib.sha256("asdasdasd".encode("utf-8")).hexdigest()
+    data["unhashed_description"] = "asdasdasd".encode("utf-8").hex()
 
     response = await client.post(
         "/api/v1/payments", json=data, headers=inkey_headers_to