#!/bin/bash

DIR="."
PROGRAM_NAME="$0"

. "${DIR}/error.sh"
. "${DIR}/parse-arguments.sh"
. "${DIR}/conversion.sh"
. "${DIR}/check-device.sh"

if [ ${EUID} -ne 0 ]; then
    fatal $NOROOT_E "must be root to run this program"
fi

parse_arguments $@

# removing lvm and other filesystem signatures
if [ $LVM == 1 ]; then
	vgchange -an $(vgs --noheadings --select pv_name=~"${DEVICE}" -o vg_name) >${PROGRAM_OUTPUT} 2>&1 
fi

# Erase all disk signatures form the device and - if they exist - from all its partitions
echo "Erasing disk signatures..." >${SCRIPT_OUTPUT}
if [ -e ${DEVICE}1 ]; then
	wipefs -a ${DEVICE}[[:digit:]]* >${PROGRAM_OUTPUT} 2>&1 || fatal ${PROG_E} "wipefs returned $?"
fi
wipefs -a ${DEVICE} >${PROGRAM_OUTPUT} 2>&1 || fatal ${PROG_E} "wipefs returned $%"

# Partition the disk creating a gpt and a single partition occupying the whole remaining disk space
echo "Partitioning the disk..." >${SCRIPT_OUTPUT}
sfdisk "${DEVICE}" <<-sfdisk-script-end >${PROGRAM_OUTPUT} 2>&1 || fatal ${PROG_E} "sfdisk returned $?"
	# Create a new partition table on the specified disk, and create a new Linux LVM partition
	#
	# partition table info
	label: gpt
	#
	# partitions info
	#start	size	type	bootable
		,	,31	,
sfdisk-script-end

# Create physical volume on device and then volume group localDisk
echo "Creating physical volume ${DEVICE}1..." >${SCRIPT_OUTPUT}
pvcreate "${DEVICE}1" >${PROGRAM_OUTPUT} 2>&1 || fatal ${PROG_E} "pvcreate returned $?"
echo "Creating volume group localDisk..." >${SCRIPT_OUTPUT}
vgcreate localDisk "${DEVICE}1" >${PROGRAM_OUTPUT} 2>&1 || fatal ${PROG_E} "vgcreate returned $?"

# Create local volumes and partition them.
# If the specified size is 0, it means that the volume must not be created
if [ "${SWAP_SIZE}" != 0 ] ; then
	echo "Creating logical volume swap..." >${SCRIPT_OUTPUT}
	lvcreate -W n -C y --size "${SWAP_SIZE}S" localDisk -n swap >${PROGRAM_OUTPUT} 2>&1 || fatal ${PROG_E} "lvcreate returned $? for swap lv"
	echo "Formatting swap lv..." >${SCRIPT_OUTPUT}
	mkswap /dev/localDisk/swap >${PROGRAM_OUTPUT} 2>&1 || fatal ${PROG_E} "mkswap returned $?"
fi
if [ "${CONDOR_SIZE}" != 0 ] ; then
	echo "Creating logical volume condor..." >${SCRIPT_OUTPUT}
	lvcreate -W n --size "${CONDOR_SIZE}S" localDisk -n condor >${PROGRAM_OUTPUT} 2>&1 || fatal ${PROG_E} "lvcreate returned $? for condor lv"
	echo "Formatting condor lv..." >${SCRIPT_OUTPUT}
	mkfs.ext4 /dev/localDisk/condor >${PROGRAM_OUTPUT} 2>&1 || fatal ${PROG_E} "mkfs returned $? for condor lv"
fi
if [ "${TEMP_SIZE}" != 0 ] ; then
	echo "Creating logical volume tempdir..." >${SCRIPT_OUTPUT}
	lvcreate -W n --size "${TEMP_SIZE}S" localDisk -n tempdir >${PROGRAM_OUTPUT} 2>&1|| fatal ${PROG_E} "lvcreate returned $? for tempdir lv"
	echo "Formatting tempdir lv..." >${SCRIPT_OUTPUT}
	mkfs.ext4 /dev/localDisk/tempdir >${PROGRAM_OUTPUT} 2>&1|| fatal ${PROG_E} "mkfs returned $? for tempdir lv"
fi
if [ "${VM_SIZE}" != 0 ] ; then
	echo "Creating logical volume calcolo..." >${SCRIPT_OUTPUT}
	lvcreate -W n --size "${VM_SIZE}S" localDisk -n calcolo >${PROGRAM_OUTPUT} 2>&1 || fatal ${PROG_E} "lvcreate returned $? for vm lv"
	# The vm logical volume is not partitioned
fi