#!/bin/ksh -a

# MUST BE RUN FROM THE MOUNTROOT OF THE FS
# for example : from /nfsint1/export02

# USERS must be in the subdirectory users
# for example : /nfsint1/export02/users

V_TEMPFILE=/tmp/quotaset

DEFS_QUOTA=50000
DEFH_QUOTA=55000
DEFS_INODE=5000
DEFH_INODE=5500
V_DATE=$(date +"%d-%m-%Y_%Hh%Mm%S")

if [ -f "$1" ]
	then
		# Important
		cp /dev/null ${V_TEMPFILE}

		function fct_quotaset {
			echo "INFO: working on user $u_user"

			while read a FS b c d SQ e f HQ g h i SI j k HI
			do
				[ "$FS" != "$(pwd)" ] && {
					echo "$a $FS $b $c $d $SQ $e $f $HQ $g $h $i $SI $j $k $HI" >>${V_TEMPFILE}
					continue
				}

				softquota=$(echo $SQ |cut -d"," -f1)
				if [ "$softquota" = "0" ]
					then
						realuse=$(du -ks users/${u_user} |awk '{print $1}')
						if [ "$realuse" -le "$DEFS_QUOTA" ]
							then
								echo "INFO: ${u_user} uses ${realuse}ko space"
								cp $1 quota-bck/${u_user}.${V_DATE}
								softquota=$DEFS_QUOTA
							else
								echo "WARNING: ${u_user} exceeds the default QUOTA, can't set IT (${realuse}ko)"
						fi
				elif [ "$softquota" -gt "$DEFS_QUOTA" ]
					then
						echo "WARNING: the quota defined for $u_user exceeds the standard ($softquota > $DEFS_QUOTA)"
				fi
				hardquota=$(echo $HQ |cut -d")" -f1)
				[ "$hardquota" = "0" ] && {
					[ "$realuse" -le "$DEFS_QUOTA" ] && {
						hardquota=$DEFH_QUOTA
					}
				}

				softinode=$(echo $SI |cut -d"," -f1)
				[ "$softinode" = "0" ] && {
					softinode=$DEFS_INODE
				}
				hardinode=$(echo $HI |cut -d")" -f1)
				[ "$hardinode" = "0" ] && {
					hardinode=$DEFH_INODE
				}

				echo "$a $FS $b $c $d ${softquota}, $e $f ${hardquota}) $g $h $i ${softinode}, $j $k ${hardinode})" >>${V_TEMPFILE}
			done < $1

			cat ${V_TEMPFILE} > quota-bck/${u_user}.new
			cat ${V_TEMPFILE} > $1
		}

		fct_quotaset $1
	else
		# WANT a backup
		[ ! -d "quota-bck" ] && {
			mkdir quota-bck
		}

		[ ! -f "quotas" ] && {
			echo "ERROR: no quotas file found !"
			exit 1
		}

		[ ! -d "users" ] && {
			echo "ERROR: no 'users' dir found !"
			exit 1
		}

		for v_user in users/*
		do
			[ ! -d "$v_user" ] && continue
			u_user="${v_user##*/}"

			[ "$u_user" = "TT_DB" ] && continue

			id ${u_user} >/dev/null 2>&1
			[ "$?" -ne "0" ] && {
				echo "ERROR: user $u_user does not exists in this system, you should maybe delete the '$v_user' directory"
				continue
			}

			EDITOR="${0}" edquota $u_user
		done
fi