#!/usr/bin/env sh
set -eu
image="${1:?Usage: restore.sh IMAGE VOLUME BACKUP_FILE}"
volume="${2:?VOLUME required}"
backup="${3:?BACKUP_FILE required}"
[ -f "$backup" ] || { echo 'Backup file missing' >&2; exit 1; }
backup="$(cd "$(dirname "$backup")" && pwd)/$(basename "$backup")"
# Named volumes only. All users must remain stopped for the whole operation.
docker volume inspect "$volume" >/dev/null
[ -z "$(docker ps -q --filter "volume=$volume")" ] || { echo 'Stop every container using the volume before restore' >&2; exit 1; }
docker run --rm --network none --mount "type=volume,src=$volume,dst=/data" \
  --mount "type=bind,src=$backup,dst=/backup.db,readonly" --entrypoint node \
  "$image" tools/sqlite-backup.mjs restore /backup.db /data/app.db --offline