#!/usr/bin/perl
# (c) Dieter Odeurs
# This script starts rsync for a back-up job

use strict;
use warnings;
use Getopt::Long;

my $path = "";
my $destination;
my $help;

#Show usage
sub showUsage{
print <<EOF;
    ----------------------------
    -- Usage for rsync script --
    ----------------------------
    Required:
    --path :
		The source directory, this is the directory you want to back-up
		Example --path='/path/to/source'
    --destination
		This is the destination, where you want to put the back-up
		Example --destination='/path/to/destination'
    Optional:";
    --exclude
		Use this option if you want to exclude some directories
		Without this option the script will exclude only .etc and lost+found
		Example: --exclude='test' --exclude='demo'
EOF
exit;
}

#Without exclude options the script automatically exclude .etc and lost+found
my @exclude = (
        ".etc",
        "lost+found"
        );

#You must specify a path, destination and if you want to exclude some extra files it's possible with exclude
showUsage() if (!GetOptions ( 'path=s' => \$path,
                'exclude=s' => \@exclude,
                'destination=s' => \$destination,
                'help|?' => \$help,
                '<>' => \&showUsage ) or defined $help );

# Check if the path exist otherwise exit the program and give an error

if(defined $path){
        if (-d $path){
                print $path . " is a correct path \n";
        }else{
                print $path . " is a incorrect path \n";
                exit;
        }
}else{
        showUsage();
}

# Check if a destination is defined
unless (defined $destination) {   
    showUsage ();
}

print "exclude : @exclude \n";

# Create the command to start rsync with all the excludes and options
my $cmd =  "rsync -av --iconv=iso88591,utf8 --stats";
foreach my $exclude (@exclude) {
        $cmd = $cmd . " --exclude '$exclude'";
}
$cmd .= " $path $destination";
print $cmd . "\n";

# Run the program and show the output
my @result;
@result = `$cmd 2>&1`;
foreach my $result (@result) {
        print $result;
        chomp $result;
}

#exit the program
exit;