Core: add internal flag for invoice creation to use FakeWallet (#646)

* add internal flag for invoice creation to use FakeWallet

lnbits/core/services.py

@@ -14,7 +14,7 @@ from lnbits import bolt11
 from lnbits.db import Connection
 from lnbits.helpers import url_for, urlsafe_short_hash
 from lnbits.requestvars import g
-from lnbits.settings import WALLET
+from lnbits.settings import FAKE_WALLET, WALLET
 from lnbits.wallets.base import PaymentResponse, PaymentStatus
 
 from . import db
@@ -49,15 +49,19 @@ async def create_invoice(
     description_hash: Optional[bytes] = None,
     extra: Optional[Dict] = None,
     webhook: Optional[str] = None,
+    internal: Optional[bool] = False,
     conn: Optional[Connection] = None,
 ) -> Tuple[str, str]:
     invoice_memo = None if description_hash else memo
 
-    ok, checking_id, payment_request, error_message = await WALLET.create_invoice(
+    # use the fake wallet if the invoice is for internal use only
+    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
     )
     if not ok:
-        raise InvoiceFailure(error_message or "Unexpected backend error.")
+        raise InvoiceFailure(error_message or "unexpected backend error.")
 
     invoice = bolt11.decode(payment_request)
 

lnbits/core/templates/core/_api_docs.html

@@ -49,7 +49,8 @@
         <h5 class="text-caption q-mt-sm q-mb-none">Body (application/json)</h5>
         <code
           >{"out": false, "amount": &lt;int&gt;, "memo": &lt;string&gt;, "unit":
-          &lt;string&gt;, "webhook": &lt;url:string&gt;}</code
+          &lt;string&gt;, "webhook": &lt;url:string&gt;, "internal":
+          &lt;bool&gt;}</code
         >
         <h5 class="text-caption q-mt-sm q-mb-none">
           Returns 201 CREATED (application/json)

lnbits/core/views/api.py

@@ -147,6 +147,7 @@ class CreateInvoiceData(BaseModel):
     lnurl_balance_check: Optional[str] = None
     extra: Optional[dict] = None
     webhook: Optional[str] = None
+    internal: Optional[bool] = False
     bolt11: Optional[str] = None
 
 
@@ -173,6 +174,7 @@ async def api_payments_create_invoice(data: CreateInvoiceData, wallet: Wallet):
                 description_hash=description_hash,
                 extra=data.extra,
                 webhook=data.webhook,
+                internal=data.internal,
                 conn=conn,
             )
         except InvoiceFailure as e: