#!/bin/sh

. /etc/wmde-rp.conf

#exec > >(tee /dev/null) 2>&1

USER=`whoami`
PAM_USER=$USER
PAM_TYPE=open_session
exec >> /tmp/mys-$USER.txt 2>&1
set -x

. $PREFIX/wmde-rp-check-pam-user.sh

#echo `who am i` > /tmp/usersync-session.txt


HOMEDIR=$(getent passwd "$PAM_USER" | cut -d: -f6) 
SSHARGS="-o UserKnownHostsFile=$HOMEDIR/.wmdesync/known_hosts" 

. $PREFIX/wmde-rp-common.sh

mkdir -p $HOMEDIR/.wmdesync 
LASTERROR=$?  
if [ $LASTERROR -ne 0 ]; then 
	echo $$ > $CONFIGSYNC
	echo $$ > $FULLSYNC
	exit $LASTERROR 
fi


#LOGFILE=$HOMEDIR/.wmdesync/usersync.log
#PIDFILE=$HOMEDIR/.wmdesync/usersync.pid
#FIRSTSYNC=$HOMEDIR/.wmdesync/firstsync-done
#FULLSYNC=$HOMEDIR/.wmdesync/fullsync-done
#CONFIGSYNC=$HOMEDIR/.wmdesync/configsync-done

. $PREFIX/wmde-rp-common.sh

if [ -f "$PIDFILE" ]; then
	OLD_PID=`cat "$PIDFILE"`
	if kill -0 "$OLD_PID" 2> /dev/null; then
		echo "Usersync already running." >> $LOGFILE
		exit 0
	fi
fi

echo 0 > $CONFIGSYNC
echo 0 > $FULLSYNC
echo 0 > $SMALLFILESSYNC
echo $$ > $PIDFILE




KNOWNHOSTS=`$PREFIX/wmde-rp-generate-known-hosts.sh`
LASTERROR=$? 
if [ $LASTERROR -ne 0 ]; then 
	echo $$ > $CONFIGSYNC
	echo $$ > $FULLSYNC
	exit $LASTERROR 
fi




echo $KNOWNHOSTS > "$HOMEDIR/.wmdesync/known_hosts"
LASTERROR=$?  
if [ $LASTERROR -ne 0 ]; then 
	echo $$ > $CONFIGSYNC
	echo $$ > $FULLSYNC
	exit $LASTERROR 
fi

# The following creates users home directory on the nfs server if not already exists 
ssh $SSHARGS $PAM_USER@$NFSSERVER /usr/bin/true
LASTERROR=$?  
if [ $LASTERROR -ne 0 ]; then 
	echo $$ > $CONFIGSYNC
	echo $$ > $FULLSYNC
	exit $LASTERROR 
fi




IGNORES="-ignore 'Path .wmdesync'"
OTHERARGS="-auto -log -prefer newer  -maxerrors 500000 -fastcheck"

export UNISONLOCALHOSTNAME=`hostname`
export UNISON=$HOMEDIR/.wmdesync/unison-$UNISONLOCALHOSTNAME
WMDE_UNISON_PRF=/etc/wmde-rp-full.prf
WMDE_UNISON_CFG_PRF=/etc/wmde-rp-config.prf

SERVERCMD="UNISONLOCALHOSTNAME=$UNISONLOCALHOSTNAME UNISON=$UNISON unison"

# Arbeits-Directory für Unison erstellen
mkdir -p $UNISON
LASTERROR=$?  
if [ $LASTERROR -ne 0 ]; then 
	echo $$ > $CONFIGSYNC
	echo $$ > $FULLSYNC
	exit $LASTERROR 
fi

# Arbeits-Directory auch auf dem SSH-Server erstellen
ssh $SSHARGS $NFSSERVER "mkdir -p $UNISON"
LASTERROR=$?  
if [ $LASTERROR -ne 0 ]; then 
	echo $$ > $CONFIGSYNC
	echo $$ > $FULLSYNC
	exit $LASTERROR 
fi



# Lokal und remote eventuell vorhandene Lock- oder Cache-Dateien von Unison entfernen
rm -f $LOCALDIR/lk*
rm -f $LOCALDIR/fp*
ssh $SSHARGS $PAM_USER@$NFSSERVER rm -f $REMOTEDIR/lk*
ssh $SSHARGS $PAM_USER@$NFSSERVER rm -f $REMOTEDIR/fp*


# Lokal und remote eine Liste aller Unison-Archive erstellen
REMOTEDIR="$UNISON"
LOCALDIR="$UNISON"
REMOTEFILES=$(ssh $SSHARGS $PAM_USER@$NFSSERVER find "$REMOTEDIR" -maxdepth 1 -type f -name 'ar*' -printf '%f\\n' | sort)
LOCALFILES=$(find "$LOCALDIR" -maxdepth 1 -type f -name 'ar*' -printf '%f\n' | sort)


# Archive löschen, wenn sie sich lokal und remote unterscheiden
if [ "$REMOTEFILES" = "$LOCALFILES" ]; then
	echo "ok" > /dev/null
else
#	echo "Unison archives differ, removing them " 
	rm -f $LOCALDIR/ar*
	ssh $SSHARGS $PAM_USER@$NFSSERVER rm -f $REMOTEDIR/ar*
fi


for file in $LOCALDIR/ar*; do
    [ -e "$file" ] || continue  # Falls kein Match, "ar*" bleibt als String erhalten
    if [ ! -s "$file" ]; then
        rm -f "$file"
	ssh $SSHARGS $PAM_USER@$NFSSERVER rm -f "$file"
    fi
done

# Hilfsfunktion, um ein Unison-Profile zu erstellen
generate_profile() {
	PROFILE="$UNISON/$1.prf"
	echo "root = $HOMEDIR" > $PROFILE
	echo "root = ssh://$NFSSERVER/$HOMEDIR" >> $PROFILE
	cat /etc/wmde-rp-$1.prf >> $PROFILE
}

generate_profile full
generate_profile config

#cp "$WMDE_UNISON_PRF" "$UNISON/full.prf"; 
#cp "$WMDE_UNISON_CFG_PRF" "$UNISON/config.prf"; 


# Sync config
	
for item in $CONFIGDIRS; do
	CONFIGDIRSARGS="$CONFIGDIRSARGS -path $item"
done
	
unison config -times -sshargs "$SSHARGS" -servercmd "$SERVERCMD" $OTHERARGS -batch -ignore 'Path .wmdesync' $CONFIGDIRSARGS  
echo "$$" > $CONFIGSYNC


echo "$$" > $SMALLFILESSYNC

# Sync all
yes | unison full -times -sshargs "$SSHARGS" -servercmd "$SERVERCMD" $OTHERARGS -batch -ignore 'Path .wmdesync' 
echo "$$" > $FULLSYNC
echo "$$" > $FIRSTSYNC

# Sync all & repeat
yes | unison full -times -sshargs "$SSHARGS" -servercmd "$SERVERCMD" $OTHERARGS -batch -ignore 'Path .wmdesync' -repeat watch+60 


exit 0