#!/usr/bin/perl -w

use strict;
use Data::Dumper;
use diagnostics -verbose;

use constant PART => 0;
use constant REV  => 1;

#This is where the user will enter the Part Number and Revision Level

print "Enter the Part Number you wish to search for: ";
my $part = <STDIN>;
chomp $part;


while (!$part){ # while $PartNumber is empty keep asking
	
       print "PartNumber? ";
       $part = <STDIN>;
       chomp($part);

}

print "Enter the Revision for ($part): ";
my $rev = <STDIN>;
chomp $rev;

while (!$rev){ # while $rev is empty keep asking
	
       print "Revision? ";
       $rev = <STDIN>;
       chomp($rev);

}

my $searchresult = search( part     => $part,
			   rev      => $rev,
			   filename => './file.db',
			   );

print ref  $searchresult
  ? "Located Part Number: @{[join ':', @$searchresult ]}\n" # print the part number and the records
  : "Your Part Number ($part) Rev ($rev) could not be found....\n"; #print if part number or rev is invalid


# subroutine that takes the arguments from my $searchresult and checks
# the text file for a matching part number and revision level
sub search  {
	my %args = @_;
	my $retval;


	local *PARTS_DB;
	open PARTS_DB, $args{filename} or die  "Cannot open file $args{filename}: $!";
	while (my $record = <PARTS_DB>)  {
		chomp $record;
		my @record = split /\|/, $record;
		next unless $record[PART] eq $args{part}
		and $record[REV] eq $args{rev};

		close PARTS_DB or die  "Can't close PARTS_DB $args{filename}: $!";
		return \ @record;
	}
}