#!/bin/sh
# Restore a Cordn coordinator backup into the cordn-data volume.
# Usage: ./restore.sh backups/cordn-YYYYMMDD-HHMMSS.tgz
set -eu
cd "$(dirname "$0")"
[ "$#" -eq 1 ] || { echo "usage: $0 backups/cordn-YYYYMMDD-HHMMSS.tgz" >&2; exit 1; }
archive="$1"
[ -f "$archive" ] || { echo "no such backup: $archive" >&2; exit 1; }
printf 'This replaces the current coordinator volume. Type "restore" to continue: '
read -r answer
[ "$answer" = restore ] || { echo "aborted" >&2; exit 1; }
docker run --rm \
  -v cordn_cordn-data:/data \
  -v "$(cd "$(dirname "$archive")" && pwd)":/backup:ro \
  alpine:3.20 \
  sh -c "rm -rf /data/* /data/.[!.]* /data/..?* 2>/dev/null || true; tar xzf /backup/$(basename "$archive") -C /data"
echo "Restored $(basename "$archive")."