#!/bin/bash
#process that uses this system backup script
# - myth_mtc.py
# - supplemental web, process.py  backup

MYTH_RUN_STATUS="1"
. /etc/profile
. /etc/systemconfig
BACKUPDIR=/data/storage/disk0/backup/system_backups
DELETE_DAYS=21
DATE=`date +%F_%H-%M`
#
function backup(){
    echo "#######################################"
    echo "Starting  backup	"
    mkdir -p $BACKUPDIR/$DATE

    #backup db
    pacman -Q mysql 2>/dev/null
    if [ $? = 0 ]
    then
        mysqldump mythconverg > $BACKUPDIR/$DATE/mythconverg
        mysqldump ncid > $BACKUPDIR/$DATE/ncid
    fi

    #backup etc
    cp -rp /etc  $BACKUPDIR/$DATE/etc
    cp -rp /var/lib/oss $BACKUPDIR/$DATE/oss

    #backup func keys
    cp -rp /etc/pki $BACKUPDIR/$DATA/pki


    #make_zip file
    cd $BACKUPDIR
    tar -zcvf $BACKUPDIR/backup.$DATE.tgz  $DATE

    if [ -d $BACKUPDIR/$DATE ]
    then
        rm -rf $BACKUPDIR/$DATE
    fi

    if [ -f /home/xymon/server/ext/hbnotes.py ]
    then
        /home/xymon/server/ext/hbnotes.py
        chown nobody:nobody /data/srv/httpd/htdocs/hobbit/notes/* 2> /dev/null >/dev/null
    fi
    echo
    echo "Created file:"
    echo "    $BACKUPDIR/backup.$DATE.tgz"
    echo "########################################"
}

function remove_old_backups(){
    #remove old backups
    find $BACKUPDIR/backup*.tgz -type f -mtime +$DELETE_DAYS -delete
}


function remote_backup(){
    #Remote copy
    if [ x$RemoteBackup = x1 ]
    then
        localRemoteCheck=`echo $RemoteBackupDir | cut -d: -f1`
        if [  x$localRemoteCheck =  xdir ]
        then
            localRemotedir=`echo $RemoteBackupDir | cut -d: -f2`
            echo "copying $BACKUPDIR/backup.$DATE.tgz to  $localRemotedir  "
            cp $BACKUPDIR/backup.$DATE.tgz  $localRemotedir
        else
            /usr/bin/func  ${RemoteBackupDir}  ping| grep -q "FAILED"
            rc=$?
            if [ $rc = 0 ]
            then
                #this is here to mark failed copy of the backup.
                #There is a cron.hourly job that will attempt to retransfer the file
                echo "Remote backup failed to ${RemoteBackupDir}"
                echo backup.$DATE.tgz >> $BACKUPDIR/remote_backup_failed.txt
            else
                echo "copying $BACKUPDIR/backup.$DATE.tgz to  ${RemoteBackupDir}:$BACKUPDIR/MBE_$DATE.tgz"
                /usr/bin/func  ${RemoteBackupDir} copyfile  -f  $BACKUPDIR/backup.$DATE.tgz  --remotepath $BACKUPDIR/MBE_$DATE.tgz
            fi
        fi
    fi
}

function remote_transfer(){
    transfer_file=${1}
    echo $transfer_file
    /usr/bin/func  ${RemoteBackupDir}  ping| grep -q "FAILED"
    rc=$?
    if [ $rc = 0 ]
    then
        #this is here to mark failed copy of the backup.
        #There is a cron.hourly job that will attempt to retransfer the file
        echo "Remote backup failed to ${RemoteBackupDir}"
        echo $transfer_file >> $BACKUPDIR/remote_backup_failed.txt
    else
        echo "copying $BACKUPDIR/$transfer_file to  ${RemoteBackupDir}:$BACKUPDIR/MBE_$transfer_file"
        /usr/bin/func  ${RemoteBackupDir} copyfile  -f  $BACKUPDIR/$transfer_file  --remotepath $BACKUPDIR/MBE_$transfer_file
    fi
}

function add_link(){
    if [ -f $BACKUPDIR/remote_backup_failed.txt ]
    then
        RETRYFILE="/etc/cron.hourly/lh_backup_retry.sh"
        echo "#!/bin/bash" > $RETRYFILE
        echo "#This file was autogenerated and removed by lh_system_backup_job" >> $RETRYFILE
        echo "MYTH_RUN_STATUS=1">> $RETRYFILE
        echo ". /etc/profile">> $RETRYFILE
        echo "lh_system_backup_job retry">> $RETRYFILE
        chmod 755 $RETRYFILE
    fi
}

function remove_link(){
    RETRYFILE="/etc/cron.hourly/lh_backup_retry.sh"
    if [ ! -f $BACKUPDIR/remote_backup_failed.txt ]
    then
        rm -f $RETRYFILE
    fi
}
#------------------------------------
if [ "x$1" = "x" ]
then
    remove_old_backups
    backup
    remote_backup
    add_link
else
    #this is where we attempt to transfer again as part of the cronjob
    if [ -f $BACKUPDIR/remote_backup_failed.txt ]
    then
        mv -f $BACKUPDIR/remote_backup_failed.txt /tmp
        while read line
        do
            echo $line
            remote_transfer $line
        done < /tmp/remote_backup_failed.txt
        rm -f /tmp/remote_backup_failed.txt
    fi
    remove_link
fi