Dynamically set BLOCK_EXPLORER_URL based on Bitcoin Node network

ride-the-lightning/docker-compose.yml

@@ -7,7 +7,7 @@ services:
       APP_PORT: 3001
 
   web:
-    image: shahanafarooqui/rtl:v0.15.2@sha256:5473e45c18e86c479ac8e7485f06e7c31948d5dc0726306f3850cf8ee635cbcd
+    image: shahanafarooqui/rtl:v0.15.2@sha256:e2c40d04821a1a6e9bcb55b4276c428c6c416ab1c33b4efd256366430234ea6a
     user: "1000:1000"
     restart: on-failure
     stop_grace_period: 1m
@@ -24,7 +24,7 @@ services:
         RTL_CONFIG_PATH: "/data"
         CHANNEL_BACKUP_PATH: "/data/backup"
         LN_IMPLEMENTATION: "LND"
-        BLOCK_EXPLORER_URL: 'https://mempool.space'
+        BLOCK_EXPLORER_URL: "${APP_RTL_BLOCK_EXPLORER_URL}"
 
         # LND connection details
         LN_SERVER_URL: "https://$APP_LIGHTNING_NODE_IP:$APP_LIGHTNING_NODE_REST_PORT"

ride-the-lightning/exports.sh

@@ -0,0 +1,17 @@
+# Dynamically export the block explorer URL based on what network the Bitcoin node is running on
+
+BLOCK_EXPLORER_URL="https://mempool.space"
+
+# TODO: check for umbrelOS Mempool app and use local URL if installed
+# e.g., "${UMBREL_ROOT}/scripts/app" ls-installed | grep --quiet 'mempool'
+# RTL would need a way to dynamically construct the URL for the local Mempool app
+# e.g., localExplorerUrl = `${window.location.protocol}//${window.location.hostname}:${LOCAL_MEMPOOL_PORT}`;
+
+# Append APP_BITCOIN_NETWORK to the URL if it is not mainnet (e.g., https://mempool.space/testnet)
+if [[ "${APP_BITCOIN_NETWORK}" != "mainnet" ]]; then
+  echo "Bitcoin is running on ${APP_BITCOIN_NETWORK}. Appending ${APP_BITCOIN_NETWORK} to the block explorer URL."
+  BLOCK_EXPLORER_URL="${BLOCK_EXPLORER_URL}/${APP_BITCOIN_NETWORK}"
+  echo "BLOCK_EXPLORER_URL: ${BLOCK_EXPLORER_URL}"
+fi
+
+export APP_RTL_BLOCK_EXPLORER_URL="${BLOCK_EXPLORER_URL}"