#!/usr/bin/env bash
set -euo pipefail

# ----------------------------------------------------------
# Weekly full backup of all Kubernetes PV data
# ----------------------------------------------------------

SOURCE_DIR="/k8s_storage"
TMP_DIR="/tmp/mist-backups"
BUCKET="mist-backups"

DATE="$(date -u +%Y-%m-%d)"
TIMESTAMP="$(date -u +%Y-%m-%d_%H-%M-%S)"
HOST="$(hostname)"

ARCHIVE_NAME="k8s_storage_${HOST}_${TIMESTAMP}.tar.gz"
ARCHIVE_PATH="${TMP_DIR}/${ARCHIVE_NAME}"

echo "=== Mist weekly PV backup ==="
echo "Source:   ${SOURCE_DIR}"
echo "Archive:  ${ARCHIVE_PATH}"
echo "Bucket:   s3://${BUCKET}/${DATE}/"

mkdir -p "${TMP_DIR}"

echo "→ Creating tarball"
tar \
  --numeric-owner \
  --xattrs \
  --acls \
  -czf "${ARCHIVE_PATH}" \
  -C "${SOURCE_DIR}" .

echo "→ Uploading to S3"
aws s3 cp \
  "${ARCHIVE_PATH}" \
  "s3://${BUCKET}/${DATE}/${ARCHIVE_NAME}"

echo "→ Cleaning up local temp"
rm -f "${ARCHIVE_PATH}"

echo "✅ Backup complete"