#!/usr/bin/perl -w

use strict;
use DBI;
use Getopt::Std;
use POSIX qw(
    ceil
    floor
);
my %options = ();
getopts("c:",\%options);
my $configFile = $options{c};
if (!$configFile || ! -f $configFile) {
    print "Usage: $0 -c CONFIG_FILE\n";
    exit 1;
}

my $config = loadConfig($configFile);
my $dbh = makeConnection($config);
END {
    if ($dbh) {
        $dbh->disconnect();
    }
}

$| = 1;
# fix -- update barcodes
my $sth = $dbh->prepare(<<_SQL_);
select rid 
from opl_marcRecord 
_SQL_

    $sth->execute;
    my $dir;
    while (my ($rid) = $sth->fetchrow_array) {
        if($rid){
            updateRecHoldings_xml($dbh,$rid);
        }
    }
    
    $sth->finish;


############################################################
sub updateRecHoldings_xml{
    my($dbh,$rid) =@_;
    my $zRoot   = $config->{'zRoot'};
    my $zPort   = $config->{'zPort'};
    my $zDatabase = $config->{'zDatabase'};
    my $dir     = "$zRoot/$zPort/record/$zDatabase/" . ceil($rid/1000);

    my $sth_item        =$dbh->prepare("update opl_item set barcode=? where barcode=?");
    my $sth_itemstatus  =$dbh->prepare("update opl_itemstatus set barcode=? where barcode=?");
    my $sth_loan        =$dbh->prepare("update opl_loan set barcode=? where barcode=?");
    unless (-d $dir) {
            mkdir $dir, 0770;
    }        
     
    if (-f "$dir/$rid.xml") {
            my $xml = '';
            open  RECORD, "<$dir/$rid.xml";
            my $line;
            while (<RECORD>) {
                $line = $_;
                if ($line !~ m/<subfield code="-"/) {
                    $xml .= $line;
                }
            }
            my $newSubFields="";
            my $found=0;
            while ($xml =~ s/([\s]*<datafield tag="852" ind1="[\d ]" ind2="[\d ]">([\s]*<subfield code="[\w\-]">.*<\/subfield>)+[\s]*<\/datafield>)//) {
                my $tmp852 =$1;
                if ($tmp852 =~ m/<subfield code="p">(.*)<\/subfield>/) {
                    my $oldBc=$1;
                    my $tmpOldBc=$1;                    
                    my $bc=fixBc($1);
                    $tmpOldBc =~ s/\*/\\\*/g;
                    $tmpOldBc =~ s/\[/\\\[/g;

                    $tmp852 =~ s/<subfield code=\"p\">$tmpOldBc<\/subfield>/<subfield code=\"p\">$bc<\/subfield>/g;
                    $sth_item->execute($bc,$oldBc);
                    $sth_itemstatus->execute($bc,$oldBc);
                    $sth_loan->execute($bc,$oldBc);
                
                }
                $newSubFields .= $tmp852;
            
            }
            $xml =~ s/[\s]*<\/record>/$newSubFields\n<\/record>/;
            close RECORD;
            open  RECORD, ">$dir/$rid.xml";
            print RECORD $xml;
            close RECORD;
            

    }
}

############################################################
sub fixBc{
    my($bc)=@_;
    $bc =~ s/^\*+|\*+$//g;
    return $bc;
}


############################################################
sub makeConnection {
    my ($config) = @_;
    if (!$config) {
        return;
    }
    my ($db_driver, $db_name, $db_host, $db_port, $db_user, $db_password);

    $db_driver   = $config->{'db_driver'} || 'mysql';
    $db_name     = $config->{'db_name'};
    $db_host     = $config->{'db_host'};
    $db_port     = $config->{'db_port'}   || '3306';
    $db_user     = $config->{'db_user'};
    $db_password = $config->{'db_password'};

    my $dsn = "dbi:$db_driver:$db_name:$db_host:$db_port";

    return DBI->connect($dsn, $db_user, $db_password);
}


############################################################
sub loadConfig {
    my ($configFile) = @_;
#    print "Enter the config filename of Opals: ";
#    $configFile = <STDIN>;
    my $config = {};

    open CONF, $configFile || die "Cannot open file $configFile";
    while (<CONF>) {
        chomp;
        s/#.*//;                # remove comments
        next if /^\s*$/;        # ignore blank lines

        if (/^\s*(\w+)\s*=\s*(.*?)\s*$/) {
            $config->{$1} = $2;
        }
    }
    close CONF;
    
    return $config;
}
############################################################


exit 0;