#!/usr/bin/perl

use strict;
use warnings;

use DBI;
use DBD::mysql;

#this is my config module
use DBase::MySQL::Config qw(DB_CUSTOMER_CATALOG DB_USER DB_PW);

my $dbh = DBI->connect(DB_CUSTOMER_CATALOG, DB_USER, DB_PW);

my $catalog_u = $dbh->prepare(q{UPDATE catalog SET name=?, address=?, notes=? WHERE phone_number=?});
my $catalog_i = $dbh->prepare(q{INSERT INTO catalog SET phone_number=?, name=?, address=?, notes=?});
my $catalog_c = $dbh->prepare(q{SELECT COUNT(*) FROM catalog WHERE phone_number=?});
my $change_i = $dbh->prepare(q{INSERT INTO change_log SET timestamp=NOW(), number_record=?, action=?});

while(<DATA>) {
	chomp;
	my ($phone, $name, $address, $notes) = split "\t";
	
	my $catalog_c->execute($phone) or die $dbh->errstr;
	my ($exists) = $catalog_c->fetchrow_array;
	
	if ($exists) {
		my $changed = $catalog_u->execute($name, $address, $notes, $phone) or die $dbh->errstr;
		if ($changed) {
			$change_i->execute($phone, 'update') or die $dbh->errstr;
		}
	} else {
		$catalog_i->execute($phone, $name, $address, $notes) or die $dbh->errstr;
		$change_i->execute($phone, 'insert') or die $dbh->errstr;
	}
}

$catalog_u->finish;
$catalog_i->finish;
$catalog_c->finish;
$change_i->finish;

$dbh->disconnect();

__END__