#!/bin/bash
# ---------------------------------------------------------------------
# Web hosts backup script
# prochor666@gmail.com
# Full backup few days (7 is default)
# This script is licensed under GNU GPL version 2.0 or above
# ---------------------------------------------------------------------

clear

# Setup
BACKUPROOT="/var/webserver-backup"
MYSQLBACKUPROOT="$BACKUPROOT/mysql"
WEBBACKUPROOT="$BACKUPROOT/webhosts"
WEBROOT="/var/www"
MUSER="root"
MPASS="mysqlpassword"
MHOST="localhost"
MYSQL="$(which mysql)"
MYSQLDUMP="$(which mysqldump)"
GZIP="$(which gzip)"
TAR="$(which tar)"
LOGFILE="$BACKUPROOT/webserver-backup.log"

_cleanup () {
    find $MYSQLBACKUPROOT -type f -mtime +$1 -print | xargs -I {} rm {}
    find $WEBBACKUPROOT -type f -mtime +$1 -print | xargs -I {} rm {}
}

_get_date_suffix () {
    V=`date +"%Y-%m-%d"`
    echo "$V"
}

_get_dir_size () {
    echo `du -hs $1 | cut -f1`
}

_log_reset () {
    echo "" > $LOGFILE
}

_log () {
    T=`date +"%d.%m.%Y %T"`
    echo "$T $1" >> $LOGFILE
}

# Check dirs
if [ ! -d $MYSQLBACKUPROOT ]; then
    mkdir -p $MYSQLBACKUPROOT
fi

if [ ! -d $WEBBACKUPROOT ]; then
    mkdir -p $WEBBACKUPROOT
fi

# Reset log
_log_reset
_log "Backup job begin"

# First, check old files and delete all files older then $1 days
_cleanup 7


# MySQL backup
DBS="$($MYSQL -u $MUSER -h $MHOST -p$MPASS -Bse 'show databases')"

for DB in $DBS
do
    if [ $DB != "information_schema" ] && [ $DB != "performance_schema" ] && [ $DB != "mysql" ]; then
        DFILE="$MYSQLBACKUPROOT/$DB-$(_get_date_suffix).gz"
        _log "Backup database $DB to $DFILE"
        $MYSQLDUMP -u $MUSER -h $MHOST -p$MPASS $DB | $GZIP -9 > $DFILE
    fi
done

_log "MySQL backup completed, directory size: $(_get_dir_size $MYSQLBACKUPROOT)"


# Webhosts ackup
for DIR in $WEBROOT/*
do
    if [ -d $DIR ] && [ ${DIR##*/} != "html" ]; then
        WFILE="$WEBBACKUPROOT/${DIR##*/}-$(_get_date_suffix).gz"
        _log "Backup directory $DIR to $WFILE"
        $TAR -zcf $WFILE $DIR
    fi
done

_log "Webhosts backup completed, directory size: $(_get_dir_size $WEBBACKUPROOT)"