From 281646dcae306de2f67f241fe55bad8fffe6452b Mon Sep 17 00:00:00 2001
From: Gerrit Gogel <gerrit@gogel.me>
Date: Mon, 25 Jan 2021 00:53:43 +0100
Subject: [PATCH] add swam-dns.sh

---
 seafile-caddy/scripts/swarm-dns.sh | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 seafile-caddy/scripts/swarm-dns.sh

diff --git a/seafile-caddy/scripts/swarm-dns.sh b/seafile-caddy/scripts/swarm-dns.sh
new file mode 100644
index 0000000..c24b221
--- /dev/null
+++ b/seafile-caddy/scripts/swarm-dns.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+if [ "$SWARM_DNS" = true ]; then
+    
+    cp /etc/caddy/Caddyfile /etc/caddy/Caddyfile.default
+    
+    while true; do 
+
+        SEAHUB_IPS=$(dig +short seahub | sed -e 's/$/:8000/' | tr ' ' '\n' | sort | tr '\n' ' ')
+        SEAHUB_MEDIA_IPS=$(dig +short seahub-media | sed -e 's/$/:80/' | tr ' ' '\n' | sort | tr '\n' ' ')
+
+        cp /etc/caddy/Caddyfile.default /etc/caddy/Caddyfile.tmp
+
+        sed -i "s/seahub:8000/$(echo $SEAHUB_IPS)/g" /etc/caddy/Caddyfile.tmp
+        sed -i "s/seahub-media:80/$(echo $SEAHUB_MEDIA_IPS)/g" /etc/caddy/Caddyfile.tmp
+
+        if ! diff -q "/etc/caddy/Caddyfile" "/etc/caddy/Caddyfile.tmp"; then
+            rm -f /etc/caddy/Caddyfile
+            mv /etc/caddy/Caddyfile.tmp /etc/caddy/Caddyfile
+            echo "Applying new Caddyfile:"
+            cat /etc/caddy/Caddyfile
+            caddy reload --config /etc/caddy/Caddyfile
+        fi
+
+        sleep 10
+
+    done
+fi