#! /bin/bash

## Read the information from /share/apps/configrepo/users_data/syncusers.dat (CASE 1,2,3,4) and implement the necessary corrections for an user in a node.

#CASE 3: users are properly synced 
declare -a u2a=($(cat /share/apps/configrepo/users_data/syncusers.dat | grep 'CASE 3' | awk '{print $4}'))
declare -a id=($(cat /share/apps/configrepo/users_data/syncusers.dat | grep 'CASE 3' | awk '{print $13}'))
declare -a n2a=($(cat /share/apps/configrepo/users_data/syncusers.dat | grep 'CASE 3' | awk '{print $21}'))

alen=${#u2a[@]}
if [ $alen -eq 0 ]; then
    echo "No CASE 3"
else
	echo 'CASE 3: The following users are synced in the local nodes. Will do nothing.'
	echo 'alen=' $alen
	for (( i=1; i<${alen}+1; i++ ));
	do
		echo 'i=' $i ${u2a[$i-1]} ${id[$i-1]} ${n2a[$i-1]}
	done
	echo ' '     
fi

#CASE 2: To modify uid of user in local nodes
declare -a u2a=($(cat /share/apps/configrepo/users_data/syncusers.dat | grep 'CASE 2' | awk '{print $4}'))
declare -a id=($(cat /share/apps/configrepo/users_data/syncusers.dat | grep 'CASE 2' | awk '{print $13}'))
declare -a id2m=($(cat /share/apps/configrepo/users_data/syncusers.dat | grep 'CASE 2' | awk '{print $18}'))
declare -a n2a=($(cat /share/apps/configrepo/users_data/syncusers.dat | grep 'CASE 2' | awk '{print $20}'))
alen=${#u2a[@]}
if [ $alen -eq 0 ]; then
    echo "No CASE 2" 
    nc2='true'
else
	echo 'CASE 2: To modify the uid of users in local nodees'
	echo 'alen=' $alen
	for (( i=1; i<${alen}+1; i++ ));
	do	
		echo 'i=' i 'The uid' ${id2m[$i-1]} 'of user' ${u2a[$i-1]} 'in' ${n2a[$i-1]} 'is to be changed to' ${id[$i-1]}
		echo '0000' ${u2a[$i-1]} ${id[$i-1]} mockpasswd > /share/apps/configrepo/users_data/newuser.dat
		ssh -X -Y -oStrictHostKeyChecking=no ${n2a[$i-1]} "/share/apps/local/bin/coc-usermod_uid_local"
	done    
	echo ' ' 
fi
#		{print "}

#CASE 4: To add user to compute node
declare -a u2a=($(cat /share/apps/configrepo/users_data/syncusers.dat | grep 'CASE 4' | awk '{print $4}'))
declare -a id2a=($(cat /share/apps/configrepo/users_data/syncusers.dat | grep 'CASE 4' | awk '{print $7}'))
declare -a n2a=($(cat /share/apps/configrepo/users_data/syncusers.dat | grep 'CASE 4' | awk '{print $12}'))
alen=${#u2a[@]}

if [ $alen -eq 0 ]; then
    echo "No CASE 4"
    nc4='true'
else
	echo 'CASE 4: To add the following users in local nodes'
	echo 'alen=' $alen
	for (( i=1; i<${alen}+1; i++ ));
	do
	#######################################
	### to abstract the password of ${u2a[$i-1]} from /share/apps/configrepo/users_data/userpass.xx.dat
	usr=${u2a[$i-1]}
	number=$(ls /share/apps/configrepo/users_data/userpass.* | awk -F "." '{print $2}' | sort | awk 'END {print}')
	taf=/share/apps/configrepo/users_data/userpass.$number.dat
	#echo $taf
	passw=$(cat $taf | grep "${u2a[$i-1]}" | awk '{print $4}')
#	echo "${u2a[$i-1]}" "$passw"
	#######################################
		echo 'i=' $i To add user ${u2a[$i-1]} with uid  ${id2a[$i-1]} with passwd "$passw" in ${n2a[$i-1]}
#		echo 'i=' $i ${u2a[$i-1]}  ${n2a[$i-1]}
		echo '0000' ${u2a[$i-1]} ${id2a[$i-1]} "$passw" > /share/apps/configrepo/users_data/newuser.dat
		ssh -X -Y -oStrictHostKeyChecking=no ${n2a[$i-1]} "/share/apps/local/bin/coc-adduser_local"
	done    
	echo ' ' 
fi

#CASE 1: A common uid is associated with distinct users in the frontend and the nodes. The uid of the user in the nodes will be modified.
declare -a uf=($(cat /share/apps/configrepo/users_data/syncusers.dat | grep 'CASE 1' | awk '{print $4}'))
declare -a un=($(cat /share/apps/configrepo/users_data/syncusers.dat | grep 'CASE 1' | awk '{print $9}'))
declare -a id=($(cat /share/apps/configrepo/users_data/syncusers.dat | grep 'CASE 1' | awk '{print $12}'))
declare -a n2a=($(cat /share/apps/configrepo/users_data/syncusers.dat | grep 'CASE 1' | awk '{print $20}'))
alen=${#n2a[@]}


if [ $alen -eq 0 ]; then
    echo "No CASE 1"
    	nc1='true'
else
	echo 'CASE 1: To modify the uid of an user in a node that shares a common uid with another user in the frontend'
	echo 'alen=' $alen
	for (( i=1; i<${alen}+1; i++ ));
	do	
		echo 'i=' $i 'The uid' ${id[$i-1]} 'is the same for user' ${uf[$i-1]} 'in the frontend and user' ${un[$i-1]} 'in the node' ${n2a[$i-1]} 
	
	######### to generate global userid
	coc-sshreachable
	hosts=$(cat /share/tmp/ssh-reachable.dat)

	rm -rf luid.dat
	for rn in $hosts
	do
	ssh $rn -oStrictHostKeyChecking=no "/share/apps/local/bin/coc-uid" >> luid.dat
	done
	userid=$(cat luid.dat | awk '{print $6}' | sort | uniq | awk 'END {print}')
	echo last userid from all nodes is $userid
	userid=$(( $userid + 1 ))
	rm -rf luid.dat
	######### end of to generate global userid

	echo 'To change the uid' ${id[$i-1]} for user ${un[$i-1]} 'in the node' ${n2a[$i-1]} to $userid
	echo '0000' ${un[$i-1]} $userid  mockpasswd > /share/apps/configrepo/users_data/newuser.dat
	ssh -X -Y -oStrictHostKeyChecking=no ${n2a[$i-1]} "/share/apps/local/bin/coc-usermod_uid_local"
	done    
	echo ' ' 
fi

if [ "$nc2" = 'true' ] && [ "$nc4" = 'true' ] && [ "$nc1" = 'true' ]
then
	echo 'all users are synced'
fi