update randomize vpn script to get IP from endpoint

network/wg-randomize.sh

@@ -1,2 +1,29 @@
 #!/bin/bash
-ln -sf "$(find /etc/wireguard -maxdepth 1 -name '*.conf' ! -name 'wg0.conf' | shuf -n1)" /etc/wireguard/wg0.conf
+set -euo pipefail
+
+CONF_DIR="${1:?Usage: $0 <conf-directory>}"
+
+# Pick a random .conf except wg0.conf
+random_conf=$(find "$CONF_DIR" -maxdepth 1 -type f -name "*.conf" ! -name "wg0.conf" | shuf -n1)
+
+echo "Selected: $random_conf"
+
+# Copy to wg0.conf in current directory
+cp "$random_conf" ./wg0.conf
+
+# Resolve hostname in Endpoint to IP
+endpoint=$(grep '^Endpoint' wg0.conf | awk '{print $3}')
+host=${endpoint%:*}
+port=${endpoint##*:}
+
+ip=$(getent ahostsv4 "$host" | awk '{print $1; exit}')
+
+if [[ -z "$ip" ]]; then
+    echo "Failed to resolve $host"
+    exit 1
+fi
+
+sed -i "s|^Endpoint = .*|Endpoint = $ip:$port|" wg0.conf
+
+echo "Updated Endpoint:"
+grep '^Endpoint' wg0.conf