#!/bin/bash


set -euo pipefail

readonly MOUNT_DIR="${1:-/mnt/disks/ssd}"

if [[ -d "${MOUNT_DIR}" ]]; then
  echo "Mount directory ${MOUNT_DIR} already exists, skipping"
  exit 0
fi

for SSD_DISK in $(realpath "$(find /dev/disk/by-id/ | grep google-local)")
do
  # Check if the disk is already formatted
  if ! blkid -o value -s TYPE "${SSD_DISK}" > /dev/null 2>&1; then
    echo "Disk ${SSD_DISK} is not formatted, format it."
    mkfs.ext4 -m 0 -E lazy_itable_init=0,lazy_journal_init=0,discard "${SSD_DISK}" || continue
  fi

  # Check if the disk is already mounted
  if grep -qs "^/dev/nvme0n1 " /proc/mounts; then
    grep -s "^/dev/nvme0n1 " /proc/mounts
    echo "Disk ${SSD_DISK} is already mounted, skip it."
    continue
  fi

  # Disk is not mounted, mount it
  echo "Mounting ${SSD_DISK} to ${MOUNT_DIR}"
  mkdir -p "${MOUNT_DIR}"
  chmod -R 777 "${MOUNT_DIR}"
  mount "${SSD_DISK}" "${MOUNT_DIR}"
  break
done

if [[ ! -d "${MOUNT_DIR}" ]]; then
  echo "No unmounted SSD disks found"
  exit 1
fi