#!/bin/bash

#DEFINE ENV VARIABLES AND REMOVE OLD LOGS

SOURCE=/mnt/smb/online/
TARGET=/mnt/storage/
RSYNCLIST=/root/nas/logs/rsynclist.txt
RSYNCLOGFILE=/root/nas/logs/rsynclogfile.txt
LOGS=/root/nas/logs/
/usr/bin/cat /dev/null > $LOGS/mailfile.txt
/usr/bin/cat /dev/null > $LOGS/sender_worklog.txt
/usr/bin/cat /dev/null > $RSYNCLIST
/usr/bin/cat /dev/null > $RSYNCLOGFILE
/usr/bin/cat /dev/null > $LOGS/old_files_removed.txt

function clear_maillogs {
/usr/bin/cat /dev/null > $LOGS/mailfile.txt
/usr/bin/cat /dev/null > $LOGS/worklog.txt

}
function fill_sender_recipients {

	/usr/bin/echo "From: sender01@ppl33-35.net" 2>&1 | /usr/bin/tee -a $LOGS/mailfile.txt
        /usr/bin/echo "To: fys@ppl33-35.net" 2>&1 | /usr/bin/tee -a $LOGS/mailfile.txt
        /usr/bin/echo "Subject: rsync copy log" 2>&1 | /usr/bin/tee -a $LOGS/mailfile.txt
        /usr/bin/echo "" 2>&1 | /usr/bin/tee -a $LOGS/mailfile.txt
}

function fill_checker_recipients {
	/usr/bin/echo "From: checker01@ppl33-35.net" 2>&1 | /usr/bin/tee -a $LOGS/mailfile.txt
        /usr/bin/echo "To: fys@ppl33-35.net" 2>&1 | /usr/bin/tee -a $LOGS/mailfile.txt
        /usr/bin/echo "Subject: checker log" 2>&1 | /usr/bin/tee -a $LOGS/mailfile.txt
        /usr/bin/echo "" 2>&1 | /usr/bin/tee -a $LOGS/mailfile.txt
}

function sender {

	/usr/bin/cat /dev/null > $LOGS/mailfile.txt
	/usr/bin/cat /dev/null > $LOGS/sender_worklog.txt
	/usr/bin/cat /dev/null > $RSYNCLIST
	/usr/bin/cat /dev/null > $RSYNCLOGFILE
	/usr/bin/cat /dev/null > $LOGS/old_files_removed.txt
	fill_sender_recipients
	/usr/bin/echo "Backup started at `/usr/bin/date`" 2>&1 | /usr/bin/tee -a $LOGS/sender_worklog.txt
	/usr/bin/echo "" 2>&1 | /usr/bin/tee -a $LOGS/sender_worklog.txt
	cd $SOURCE
	/usr/bin/find . -mtime -2 -print | /usr/bin/tee -a $RSYNCLIST
	/usr/bin/rsync -av --ignore-existing --size-only --log-file=/root/nas/logs/rsynclogfile.txt --files-from=/root/nas/logs/rsynclist.txt /mnt/smb/online/ /mnt/storage/

	### DEBUG STARTED HERE ###

	MOUNTSTATUS=`/usr/bin/systemctl is-active mnt-smb.mount`
	if [ "$MOUNTSTATUS" == "active" ]; then
		/usr/bin/echo "" 2>&1 | /usr/bin/tee -a $LOGS/debug.log
		/usr/bin/echo "Debug mode enabled: smb is up" 2>&1 | /usr/bin/tee -a $LOGS/debug.log
        	/usr/bin/echo "" 2>&1 | /usr/bin/tee -a $LOGS/debug.log
	else [ "$MOUNTSTATUS" == "inactive" ];
        	/usr/bin/echo "Debug mode enabled: smb is down" 2>&1 | /usr/bin/tee -a $LOGS/debug.log
        	/usr/bin/echo "" 2>&1 | /usr/bin/tee -a $LOGS/debug.log
	fi

	### DEBUG ENDED HERE ###

	/usr/bin/find $TARGET -maxdepth 1 -mtime +14 -print -exec /usr/bin/rm -rf {} \; > $LOGS/old_files_removed.txt
	/usr/bin/cat $RSYNCLOGFILE >> $LOGS/sender_worklog.txt
	/usr/bin/echo "" 2>&1 | /usr/bin/tee -a $LOGS/sender_worklog.txt
	/usr/bin/echo "Files below was removed due to expiration date (15 days keep)" 2>&1 | /usr/bin/tee -a $LOGS/sender_worklog.txt
	/usr/bin/cat $LOGS/old_files_removed.txt 2>&1 | /usr/bin/tee -a $LOGS/sender_worklog.txt
	/usr/bin/echo "" 2>&1 | /usr/bin/tee -a $LOGS/sender_worklog.txt
	/usr/bin/echo "Backup ended at `/usr/bin/date`" 2>&1 | /usr/bin/tee -a $LOGS/sender_worklog.txt
	/usr/bin/cat $LOGS/sender_worklog.txt >> $LOGS/mailfile.txt && /usr/bin/cat $LOGS/mailfile.txt | /usr/sbin/sendmail -t

}

LOGS=/root/nas/logs/
clear_maillogs
MOUNTSTATUS=`/usr/bin/systemctl is-active mnt-smb.mount`

/usr/bin/echo "checker started at `/usr/bin/date` and uptime is `uptime -p`" 2>&1 | /usr/bin/tee -a $LOGS/worklog.txt
fill_checker_recipients

if [ "$MOUNTSTATUS" == "active" ]; then
	/usr/bin/echo "" 2>&1 | /usr/bin/tee -a $LOGS/worklog.txt
	/usr/bin/echo "SMB Share seems UP: bypassing control to copy script" 2>&1 | /usr/bin/tee -a $LOGS/worklog.txt
        /usr/bin/echo "" 2>&1 | /usr/bin/tee -a $LOGS/worklog.txt
	/usr/bin/cat $LOGS/worklog.txt >> $LOGS/mailfile.txt && /usr/bin/cat $LOGS/mailfile.txt | /usr/sbin/sendmail -t
	#call sender function
	sender
	CURRENTDAY=`/usr/bin/date +%A`
	#clear logs before sending email
        clear_maillogs && fill_checker_recipients
	if [ "$CURRENTDAY" == "Tuesday" ]; then
		/usr/bin/echo "Backup done, bypassing control at 11:00 tomorrow" 2>&1 | /usr/bin/tee -a $LOGS/worklog.txt
		/usr/bin/cat $LOGS/worklog.txt >> $LOGS/mailfile.txt && /usr/bin/cat $LOGS/mailfile.txt | /usr/sbin/sendmail -t
		/usr/bin/at -f /root/nas/waker.sh 11:00 tomorrow
	else
		/usr/bin/echo "Backup done, bypassing control at 22:00 today" 2>&1 | /usr/bin/tee -a $LOGS/worklog.txt
		/usr/bin/cat $LOGS/worklog.txt >> $LOGS/mailfile.txt && /usr/bin/cat $LOGS/mailfile.txt | /usr/sbin/sendmail -t
                /usr/bin/at -f /root/nas/waker.sh 22:00 today
	fi

else [ "$MOUNTSTATUS" == "inactive" ];
	/usr/bin/echo "SMB Share is unmounted, check it manually" 2>&1 | /usr/bin/tee -a $LOGS/worklog.txt
	/usr/bin/echo "" 2>&1 | /usr/bin/tee -a $LOGS/worklog.txt
	clear_maillogs && fill_checker_recipients
	/usr/bin/cat $LOGS/worklog.txt >> $LOGS/mailfile.txt && /usr/bin/cat $LOGS/mailfile.txt | /usr/sbin/sendmail -t
fi