#!/bin/bash

RDX_DEVICE="/dev/sdb"
RDX_PART="/dev/sdb1"
BPC_DATAS_DIR="/var/lib/BackupPC"
BPC_FILES="/root/RDX_BackupPC/rdx_init.tar.gz"

init_rdx()
{
	echo -e "[*] Unmounting RDX "
	/bin/umount $RDX_PART 2>&1 || echo -e "[x] Error unmounting RDX partition"

	echo -e "[*] Creating /dev/sdb1..."
	(echo o; echo n; echo p; echo 1; echo ; echo; echo w) | fdisk $RDX_DEVICE 2>&1 || echo -e "[x] Error during parted"

	echo -e "[*] Creating ext4 filesystem... (this can take severals minutes)"
	/sbin/mkfs.ext4 $RDX_PART 2>&1 || echo -e "[x] Error during mkfs.ext4"

	/sbin/partprobe $RDX_DEVICE
	check_rdx

}

check_rdx()
{
	
	rdx_present=$(smartctl -A $RDX_DEVICE | grep "Current Drive Temperature" | cut -d ":" -f2 | sed -e "s/\ //g")
	if [ "$rdx_present" = "<notavailable>" ]; then
		echo -e "[x] RDX SMART <notavailable>, maybe the disk is ejected?"
		echo -e "[x] force unmount of $BPC_DATAS_DIR"
		/bin/umount -f $BPC_DATAS_DIR

	
	else
		/sbin/partprobe $RDX_DEVICE
		echo "[*] RDX SMART OK, mouting BackupPC filesystem"
	
		fs_detect=$(file -s $RDX_PART | grep "ext4" 2>&1 || echo "non")	
		if [ "$fs_detect" = "non" ]; then
                        echo -e "[x] Device $RDX_PART not found, maybe no parted?"
                        echo -e "[*] RDX Initialisation..."
			init_rdx
		else
			echo -e "Good filesystem..."
		fi

		if [ -e $RDX_PART ]; then
			echo -e "[*] fsck $RDX_PART"
#			/sbin/fsck.ext4 -f -y $RDX_PART 2>&1 || echo -e "[x] Error during fsck"
			echo -e "[*] Mount $RDX_PART in $BPC_DATAS_DIR"
			/bin/mount $RDX_PART $BPC_DATAS_DIR 2>&1 || echo -e "[x] Error during mount"
			/bin/chown -R backuppc:root $BPC_DATAS_DIR 2>&1 || echo -e "[x] Error during chown"

			if [ -d "$BPC_DATAS_DIR/pool" ]; then
				echo -e "[*] RDX is already initilised, all is done :)"
				/etc/init.d/backuppc restart
				exit 1
			else
				echo -e "[x] RDX is steal empty"
				/bin/tar xvf $BPC_FILES -C $BPC_DATAS_DIR 2>&1 || echo -e "[x] Error during extract, check if $BPC_FILES exists"
			fi
		fi
	
	fi
}


if [ -e $BPC_DATAS_DIR/pool ]; then
	echo -e "[*] Rien à faire"
	exit 1

else
	/etc/init.d/crond stop
	check_rdx
	/etc/init.d/crond start
fi