From cfa8a9a7d6cd70f1e690b065a1c4353b89a18a19 Mon Sep 17 00:00:00 2001
From: Felipe Knorr Kuhn <100320+knorrium@users.noreply.github.com>
Date: Sat, 15 Oct 2022 19:46:30 -0700
Subject: [PATCH] Update the Docker frontend startup script to read and replace
 runtime config values

---
 docker/frontend/entrypoint.sh | 56 +++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/docker/frontend/entrypoint.sh b/docker/frontend/entrypoint.sh
index 7ebe5632c..29064a396 100644
--- a/docker/frontend/entrypoint.sh
+++ b/docker/frontend/entrypoint.sh
@@ -10,4 +10,60 @@ cp /etc/nginx/nginx.conf /patch/nginx.conf
 sed -i "s/__MEMPOOL_FRONTEND_HTTP_PORT__/${__MEMPOOL_FRONTEND_HTTP_PORT__}/g" /patch/nginx.conf
 cat /patch/nginx.conf > /etc/nginx/nginx.conf
 
+# Runtime overrides - read env vars defined in docker compose
+
+__TESTNET_ENABLED__=${TESTNET_ENABLED:=false}
+__SIGNET_ENABLED__=${SIGNET_ENABLED:=false}
+__LIQUID_ENABLED__=${LIQUID_EANBLED:=false}
+__LIQUID_TESTNET_ENABLED__=${LIQUID_TESTNET_ENABLED:=false}
+__BISQ_ENABLED__=${BISQ_ENABLED:=false}
+__BISQ_SEPARATE_BACKEND__=${BISQ_SEPARATE_BACKEND:=false}
+__ITEMS_PER_PAGE__=${ITEMS_PER_PAGE:=10}
+__KEEP_BLOCKS_AMOUNT__=${KEEP_BLOCKS_AMOUNT:=8}
+__NGINX_PROTOCOL__=${NGINX_PROTOCOL:=http}
+__NGINX_HOSTNAME__=${NGINX_HOSTNAME:=localhost}
+__NGINX_PORT__=${NGINX_PORT:=8999}
+__BLOCK_WEIGHT_UNITS__=${BLOCK_WEIGHT_UNITS:=4000000}
+__MEMPOOL_BLOCKS_AMOUNT__=${MEMPOOL_BLOCKS_AMOUNT:=8}
+__BASE_MODULE__=${BASE_MODULE:=mempool}
+__MEMPOOL_WEBSITE_URL__=${MEMPOOL_WEBSITE_URL:=https://mempool.space}
+__LIQUID_WEBSITE_URL__=${LIQUID_WEBSITE_URL:=https://liquid.network}
+__BISQ_WEBSITE_URL__=${BISQ_WEBSITE_URL:=https://bisq.markets}
+__MINING_DASHBOARD__=${MINING_DASHBOARD:=true}
+__LIGHTNING__=${LIGHTNING:=false}
+
+# Export as environment variables to be used by envsubst
+export __TESTNET_ENABLED__
+export __SIGNET_ENABLED__
+export __LIQUID_ENABLED__
+export __LIQUID_TESTNET_ENABLED__
+export __BISQ_ENABLED__
+export __BISQ_SEPARATE_BACKEND__
+export __ITEMS_PER_PAGE__
+export __KEEP_BLOCKS_AMOUNT__
+export __NGINX_PROTOCOL__
+export __NGINX_HOSTNAME__
+export __NGINX_PORT__
+export __BLOCK_WEIGHT_UNITS__
+export __MEMPOOL_BLOCKS_AMOUNT__
+export __BASE_MODULE__
+export __MEMPOOL_WEBSITE_URL__
+export __LIQUID_WEBSITE_URL__
+export __BISQ_WEBSITE_URL__
+export __MINING_DASHBOARD__
+export __LIGHTNING__
+
+# This is not an array right now but that might change in the future
+files=()
+while IFS=  read -r -d $'\0'; do
+    files+=("$REPLY")
+done < <(find /var/www/mempool -name "config.js" -print0)
+
+for file in "${files[@]}"
+do
+  folder=$(dirname ${file})
+  echo ${folder}
+  envsubst < ${folder}/config.template.js > ${folder}/config.js
+done
+
 exec "$@"