#!/usr/bin/env bash
# Run the backup once on the Kvitt Pi (SPEC §10.9) and wait for it:   /opt/kvitt/backup-now.sh
# Succeeds only when backup.sh succeeded and /backups/last-success changed: the snapshot passed integrity_check,
# both files are confirmed on Drive and their local copies are deleted (D-002). Lists the newest files on Drive.
set -euo pipefail
here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# shellcheck source=lib.sh
. "$here/lib.sh"

before=$(compose exec -T backup cat /backups/last-success 2>/dev/null || true)
compose exec -T backup /backup.sh || die "backup.sh failed (lines above)"
after=$(compose exec -T backup cat /backups/last-success 2>/dev/null || true)
[[ -n "$after" && "$after" != "$before" ]] || die "last-success did not change (was '${before:-none}', is '${after:-none}')"
say "last-success: $after"
remote=$(env_value RCLONE_REMOTE); folder=$(env_value RCLONE_FOLDER_ID)
say "Newest files in the Drive folder:"
# shellcheck disable=SC2016  # the script runs inside the backup container, with its own \$1 and \$2
compose exec -T backup sh -c 'c=$(mktemp); cp /config/rclone/rclone.conf "$c"; RCLONE_CONFIG=$c rclone lsf "$1" --drive-root-folder-id "$2" --files-only --log-level ERROR; s=$?; rm -f "$c"; exit $s' \
  sh "${remote:-gdrive:}" "$folder" | sort | tail -n 4