#!/usr/bin/env bash

if [ "$EUID" -ne 0 ]; then
  echo "This script must be run by the root user" >&2
  exit 1
fi

if docker compose run --rm init sh -c '[ ! -L /backups/latest ]'; then
   # There is no latest backup, nothing to do
   exit 0
fi

if docker compose run --rm init sh -c '[ -e /backups/daily ]'; then
    # Daily marker exists, update it
    docker compose run --rm init sh -c '
        rm /backups/daily &&
        cp -P /backups/latest /backups/daily
    ' || exit 1
else
    # Daily marker does not exist, create it
    docker compose run --rm init cp -P /backups/latest /backups/daily || exit 1
fi