#!/bin/bash

#
# This script will backup a project supplied in the
# first arguement to the scp path in the second
#
# Example:
#   ./backup.sh "projectname" "/project/path" "user@host:/backup/dir"
#
# IMPORTANT NOTE
#  You must setup your two machines to allow for passwordless
#  SSH connections. Instructions can be found at:
#    http://fedoranews.org/ghenry/rdiff/
#

PNAME=$1
PROJ=$2
SCPPATH=$3
DATE=`date +"%y-%m-%d"`

# test our directory structure
if [ ! -d $PROJ ] ; then
        echo "ERROR: Project path does not exist: " $PROJ
        exit 10;
fi

if [ ! -d $PROJ/svn_repo ] ; then
    echo "ERROR: Project svn repo (/svn_repo) does not exist: " $PROJ
    exit 11;
fi

if [ ! -d $PROJ/trac ] ; then
    echo "ERROR: Project trac (/trac) does not exist: " $PROJ
    exit 12;
fi


# remove any previous working files, jic
rm -Rf /tmp/$PNAME-$DATE.tar.gz /tmp/$PNAME-$DATE.svn.dump /tmp/$PNAME-$DATE.trac.hotcopy


# do the svn dump
svnadmin dump $PROJ/svn_repo/ >> /tmp/$PNAME-$DATE.svn.dump

if [ "$?" != 0 ] ; then
        echo "ERROR: SVNDump failed"
        exit 13
fi


# cool, now lets hotcopy the trac install
trac-admin $PROJ/trac/ hotcopy /tmp/$PNAME-$DATE.trac.hotcopy

if [ "$?" != 0 ] ; then
    echo "ERROR: Trac hotcopy failed"
    exit 14
fi


# now that we have the trac and svn dumped, tar them up
cd /tmp
tar -zcvf /tmp/$PNAME-$DATE.tar.gz $PNAME-$DATE.svn.dump $PNAME-$DATE.trac.hotcopy

if [ "$?" != 0 ] ; then
    echo "ERROR: Tar compression failed"
    exit 15
fi

# now we have a backup file ready to sync out, do the SCP
scp -B /tmp/$PNAME-$DATE.tar.gz $SCPPATH/$PNAME-$DATE.tar.gz

if [ "$?" != 0 ] ; then
    echo "ERROR: The server to server copy failed. Make sure SSH shared auths are setup right."
    exit 16
fi


# remove the working files
rm -Rf /tmp/$PNAME-$DATE.tar.gz /tmp/$PNAME-$DATE.svn.dump /tmp/$PNAME-$DATE.trac.hotcopy

echo "Backup $PNAME for $DATE finished"