#!/usr/bin/env bash
# Update the self-hosted NetBird server stack (Docker Compose).
# Backs up config files and the netbird_data volume before upgrading.
set -euo pipefail

STACK_DIR=/var/limonia/netbird
DATA_VOLUME=netbird_netbird_data
BACKUP_DIR="$HOME/netbird-backups/$(date +%F_%H%M%S)"

cd "$STACK_DIR"
mkdir -p "$BACKUP_DIR"

echo "Current images:"
docker compose images

# Pull first so downtime is only the backup + restart
docker compose pull

echo "Backing up config to $BACKUP_DIR"
tar czf "$BACKUP_DIR/config.tgz" -C "$STACK_DIR" .

# Stop the server so the data store is copied consistently
docker compose stop netbird-server
echo "Backing up volume $DATA_VOLUME"
docker run --rm -v "$DATA_VOLUME":/data:ro -v "$BACKUP_DIR":/backup alpine \
  tar czf /backup/netbird_data.tgz -C /data .

docker compose up -d
sleep 5

echo "Updated images:"
docker compose images
docker compose ps
docker compose logs --tail 30 netbird-server

echo "Backup saved in $BACKUP_DIR"