#!/usr/bin/env bash
# Snapshot Verae data dirs into $BACKUP_ROOT/<utc-stamp>.tgz
set -euo pipefail
ROOT="$(cd "$(dirname "$0")/.." && pwd)"
# shellcheck disable=SC1091
. "$ROOT/paths.env"
STAMP="$(date -u +%Y%m%dT%H%M%SZ)"
DEST="$BACKUP_ROOT/$STAMP"
mkdir -p "$DEST"
copy_if() {
  local src="$1" name="$2"
  if [[ -e "$src" ]]; then
    mkdir -p "$DEST/$name"
    cp -a "$src" "$DEST/$name/" 2>/dev/null || sudo cp -a "$src" "$DEST/$name/"
    echo "copied $src"
  else
    echo "skip missing $src"
  fi
}
copy_if "$ZAPPIER_DB" sqlite
copy_if "$IAM_DATA" iam
copy_if "$KEEP_DATA" keep
copy_if "$FLEET_RUNTIME" fleet-runtime
copy_if "$FLEET_PKG_DATA" fleet-pkg
copy_if "$NATS_STORE" nats
if [[ -n "${NATS_DOCKER_VOL:-}" ]]; then copy_if "$NATS_DOCKER_VOL" nats-docker; fi
tar -C "$BACKUP_ROOT" -czf "$BACKUP_ROOT/$STAMP.tgz" "$STAMP"
rm -rf "$DEST"
# retain
ls -1dt "$BACKUP_ROOT"/*.tgz 2>/dev/null | tail -n +$((KEEP + 1)) | while read -r old; do
  rm -f "$old"
done
echo "backup $BACKUP_ROOT/$STAMP.tgz"
echo "$BACKUP_ROOT/$STAMP.tgz"