#!/bin/perl

use warnings;
use strict;
use File::Find;
use Archive::Tar;

# Directory to begin search files
our $directoriesToSearch = '/internal/';

# Directory to hold backups
our $backupLocation = '/ipbackups/';

# Calculate current date for use in archive filename
my ($day,$month,$year) = (localtime(time))[3,4,5];
$year += 1900;
$month++;

# Archive filename
our $backupFilename = "backup_$month-$day-$year.tar.gz";

# Array to hold files to be backed up
our @filesToBackup;

# Array holding directories to be skipped
our @directoriesToSkip = qw{
    /internal/scripts/chatlog
    /internal/scripts/schedule
};

# Array holding extensions to backup
our @extensionsToBackup = qw{cgi pl dat txt log};

# Let the user know what we're doing and begin finding files.
print "Find files for backup...";
find(\&actOnFiles,($directoriesToSearch));

# Notify the user that the find process is done and that we're
# creating the archive.  Then, create the archive.
print "Done!\nCreating archive $backupFilename...";
Archive::Tar->create_archive ("$backupLocation$backupFilename", 9, 

@filesToBackup);

# Notify the user and exit.
print "Done!\n";


sub actOnFiles()
{
    # Check if the file is in a skipped directory and, if so,
    # return without action
    foreach my $dir (@directoriesToSkip){
	return if ($File::Find::dir =~ m/$dir/);
    }

    # Check if the file has an appropriate extension.  If not,
    # return without action
    my $test = join('|',@extensionsToBackup);
    return unless ($_ =~ m/.($test)$/i);

    # Fail-safe check to make sure a directory hasn't slipped through
    return if (-d $File::Find::name);

    # Assuming the file has survived this long, push it into the
    # list of files to backup.
    push(@filesToBackup,$File::Find::name);
}