#!/bin/bash
# depends on sshfs  fuse for ssh
module_load filesystem # mounted
module_load net-utils  # host_reachable
module_load ssh

function smount() {

  local HOST
  local PORT
  local config
  HOST=$(sed 's/.*@\(.*\):.*/\1/' <<<"$1")
  # TODO sed search for -p and extract port, below assumes 3 and 4 position
  PORT=$([[ $3 = "-p" ]] && echo $4 || echo 22)
  [[ ! $(host_reachable $HOST $PORT) ]] && echo host $HOST not reachable, aborting mount && return 1
  if [[ $(mounted $2) ]]; then
    echo "aborting mount: $1 already mounted at $2"
  else
    echo "SSHFS: mounting $1 at $2"
    mkdir -p $2
    # can add any options after mount point directory like -o default_permissions
    if [[ $SSH_CONFIG ]]; then
      [[ ! -f "$SSH_CONFIG" ]] && ssh_config "$SSH_CONFIG"
      config=$([[ -f $SSH_CONFIG ]] && echo "-F $SSH_CONFIG")
    fi
    # echo sshfs "$*" "$config" 
    sshfs $* $config
  fi
}

function usmount() {
  if [[ $(mounted $1) ]]; then
    echo "unmounting remote file system at $1"
    fusermount -u $1
  else
    echo "nothing mounted at $1, aborting unmount"
  fi
}

function mntBackup() {
  smount root@$1:/backup /backup/remote -p 22 -o allow_other
}

function umntBackup() {
  usmount /backup/remote
}