#!/bin/sh

set -x

setglobal MOUNTPOINT = $1

test -z $MOUNTPOINT && echo "No mountpoint specified" && exit 1

mkdir -p $MOUNTPOINT

proc mount_drive
{
	# TODO fix for multiple disks, cdroms etc
	setglobal DEVS = $[find /dev -maxdepth 1 -type b ! -name 'loop*' ! -name 'nbd*' | grep -v '[0-9]$' | sed 's@.*/dev/@@' | sort]

	for DEV in [$DEVS]
	{
		setglobal DRIVE = ""/dev/$(DEV)""

		# see if it has a partition table
		if sfdisk -d $(DRIVE) >/dev/null !2 >/dev/null
		{
			# 83 is Linux partition identifier
			setglobal DATA = $[sfdisk -J $DRIVE | jq -e -r '.partitiontable.partitions | map(select(.type=="83")) | .[0].node]
			if test $Status -eq 0
			{
				mount $DATA $MOUNTPOINT && return
			}
		}
	}

	echo "WARNING: Failed to mount a persistent volume (is there one?)"
}

mount_drive