improvement: config to disable dm/invoice creation

While sending dms to users who are not signed up
but have attempted to publish events, it is now
disabled by default. This stops the creation of
extra invoices for pubkeys that may have no
intention of signing up for the relay. It also
reduced the number of dms that are created.

Signed-off-by: Greg Heartsfield <scsibug@imap.cc>

config.toml

@@ -206,7 +206,7 @@ reject_future_seconds = 1800
 #api_secret = "<ln bits api>"
 
 # Nostr direct message on signup
-#direct_message=true
+#direct_message=false
 
 # Terms of service
 #terms_message = """

src/config.rs

@@ -320,7 +320,7 @@ impl Default for Settings {
                 node_url: "".to_string(),
                 api_secret: "".to_string(),
                 sign_ups: false,
-                direct_message: true,
+                direct_message: false,
                 secret_key: None,
                 processor: Processor::LNBits,
             },

src/db.rs

@@ -261,7 +261,7 @@ pub async fn db_writer(
                     ) => {
                         // User does not exist
                         info!("Unregistered user");
-                        if settings.pay_to_relay.sign_ups {
+                        if settings.pay_to_relay.sign_ups && settings.pay_to_relay.direct_message {
                             payment_tx
                                 .send(PaymentMessage::NewAccount(event.pubkey))
                                 .ok();