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

lnbits/core/services.py

@@ -54,6 +54,7 @@ async def create_invoice(
     amount: int,  # in satoshis
     memo: str,
     description_hash: Optional[bytes] = None,
+    unhashed_description: Optional[bytes] = None,
     extra: Optional[Dict] = None,
     webhook: Optional[str] = None,
     internal: Optional[bool] = False,
@@ -65,7 +66,10 @@ async def create_invoice(
     wallet = FAKE_WALLET if internal else WALLET
 
     ok, checking_id, payment_request, error_message = await wallet.create_invoice(
-        amount=amount, memo=invoice_memo, description_hash=description_hash
+        amount=amount,
+        memo=invoice_memo,
+        description_hash=description_hash,
+        unhashed_description=unhashed_description,
     )
     if not ok:
         raise InvoiceFailure(error_message or "unexpected backend error.")

lnbits/core/views/api.py

@@ -141,6 +141,7 @@ class CreateInvoiceData(BaseModel):
     memo: Optional[str] = None
     unit: Optional[str] = "sat"
     description_hash: Optional[str] = None
+    unhashed_description: Optional[str] = None
     lnurl_callback: Optional[str] = None
     lnurl_balance_check: Optional[str] = None
     extra: Optional[dict] = None
@@ -152,9 +153,15 @@ class CreateInvoiceData(BaseModel):
 async def api_payments_create_invoice(data: CreateInvoiceData, wallet: Wallet):
     if data.description_hash:
         description_hash = unhexlify(data.description_hash)
+        unhashed_description = b""
+        memo = ""
+    elif data.unhashed_description:
+        unhashed_description = unhexlify(data.unhashed_description)
+        description_hash = b""
         memo = ""
     else:
         description_hash = b""
+        unhashed_description = b""
         memo = data.memo or LNBITS_SITE_TITLE
     if data.unit == "sat":
         amount = int(data.amount)
@@ -170,6 +177,7 @@ async def api_payments_create_invoice(data: CreateInvoiceData, wallet: Wallet):
                 amount=amount,
                 memo=memo,
                 description_hash=description_hash,
+                unhashed_description=unhashed_description,
                 extra=data.extra,
                 webhook=data.webhook,
                 internal=data.internal,