From f2a1dc57d7ecdb70bbf12abeb15273dba7a3e2ad Mon Sep 17 00:00:00 2001
From: "nicolas.dorier" <nicolas.dorier@gmail.com>
Date: Tue, 21 Nov 2023 11:09:37 +0900
Subject: [PATCH] Add BTCPAY_LIGHTNING_HOST (Fix #845)

---
 Production/README.md | 1 +
 btcpay-setup.sh      | 2 ++
 helpers.sh           | 4 ++++
 3 files changed, 7 insertions(+)

diff --git a/Production/README.md b/Production/README.md
index 4b5ac40..01e269a 100644
--- a/Production/README.md
+++ b/Production/README.md
@@ -18,6 +18,7 @@ The relevant environment variables are:
 
 * `NBITCOIN_NETWORK`: The blockchain identifier used by NBitcoin (eg., `regtest`, `testnet`, `mainnet`)
 * `BTCPAY_HOST`: The external url used to access the NGINX server from internet. This domain name must point to this machine for Let's Encrypt to create your certificate. (typically with a CNAME or A record)
+* `BTCPAY_LIGHTNING_HOST`: The hostname announced for your node on the lightning network (by default, the `BTCPAY_HOST` will be used)
 * `BTCPAY_ROOTPATH`: The root path directory where BTCPay is accessed, more information below. (default: /)
 * `LETSENCRYPT_EMAIL`: The email Let's Encrypt will use to notify you about certificate expiration.
 * `ACME_CA_URI`: Let's encrypt API endpoint (`staging` for a staging certificate, `production` for a production one)
diff --git a/btcpay-setup.sh b/btcpay-setup.sh
index c3b008f..047c71d 100755
--- a/btcpay-setup.sh
+++ b/btcpay-setup.sh
@@ -81,6 +81,7 @@ Or, if you want to offload SSL because you have an existing web proxy, change RE
 
 Environment variables:
     BTCPAY_HOST: The hostname of your website (eg. btcpay.example.com)
+    BTCPAY_LIGHTNING_HOST: The hostname announced for your node on the lightning network (by default, the BTCPAY_HOST will be used)
     REVERSEPROXY_HTTP_PORT: The port the reverse proxy binds to for public HTTP requests. Default: 80
     REVERSEPROXY_HTTPS_PORT: The port the reverse proxy binds to for public HTTPS requests. Default: 443
     REVERSEPROXY_DEFAULT_HOST: Optional, if using a reverse proxy nginx, specify which website should be presented if the server is accessed by its IP.
@@ -282,6 +283,7 @@ echo "
 Parameters passed:
 BTCPAY_PROTOCOL:$BTCPAY_PROTOCOL
 BTCPAY_HOST:$BTCPAY_HOST
+BTCPAY_LIGHTNING_HOST: $BTCPAY_LIGHTNING_HOST
 BTCPAY_ADDITIONAL_HOSTS:$BTCPAY_ADDITIONAL_HOSTS
 REVERSEPROXY_HTTP_PORT:$REVERSEPROXY_HTTP_PORT
 REVERSEPROXY_HTTPS_PORT:$REVERSEPROXY_HTTPS_PORT
diff --git a/helpers.sh b/helpers.sh
index f73eaea..4eee80e 100755
--- a/helpers.sh
+++ b/helpers.sh
@@ -66,6 +66,9 @@ btcpay_expand_variables() {
     if [[ "$BTCPAY_HOST" != *.local ]] && [[ "$BTCPAY_HOST" != *.lan ]]; then
         BTCPAY_ANNOUNCEABLE_HOST="$BTCPAY_HOST"
     fi
+    if [[ "$BTCPAY_LIGHTNING_HOST" ]]; then
+        BTCPAY_ANNOUNCEABLE_HOST="$BTCPAY_LIGHTNING_HOST"
+    fi
 }
 
 # Set .env file
@@ -94,6 +97,7 @@ fi
 echo "
 BTCPAY_PROTOCOL=$BTCPAY_PROTOCOL
 BTCPAY_HOST=$BTCPAY_HOST
+BTCPAY_LIGHTNING_HOST=$BTCPAY_LIGHTNING_HOST
 BTCPAY_ADDITIONAL_HOSTS=$BTCPAY_ADDITIONAL_HOSTS
 BTCPAY_ANNOUNCEABLE_HOST=$BTCPAY_ANNOUNCEABLE_HOST
 REVERSEPROXY_HTTP_PORT=$REVERSEPROXY_HTTP_PORT