#!/usr/bin/perl -W

use strict;
use warnings;
use POSIX;
use Fcntl;
use SDBM_File;

my %dbm;
my $test = "game.dbm";
my $win  = 0;
my ( $total, $wonpercent, $lostpercent );

tie( %dbm, 'SDBM_File', $test, O_CREAT | O_RDWR, 0644 )
  || die "Died tying database\nReason: $!";

unless ( exists $dbm{win} )  { $dbm{win}  = 0 }
unless ( exists $dbm{lost} ) { $dbm{lost} = 0 }

# max = maximum number to randomize
# tries = # of tries not to exceed $allowed
# allowed = max number of tries allowed

my $tries = 0;
my $guess;
my $allowed = 5;

print "What's the highest number you want to try?\n";
chomp( my $max = <STDIN> );
my $answer = int( rand($max) ) + 1;

while ( $tries < $allowed ) {

    print "  Your guess:  ";
    chomp( $guess = <STDIN> );
    $tries++;

    if ( $guess eq $answer ) {
        last;
    }
    elsif ( $guess > $answer ) {
        print "                 $guess is too high!\n";
    }
    elsif ( $guess < $answer ) {
        print "                 $guess is too low!\n";
    }
}

if ( $guess eq $answer ) {
    print "\nYou got it right!\n";
    print "It only took you $tries tries!\n";

    $dbm{won}++;
    $dbm{total}++;    # for stats
}
else {
    print "\n You lose!  You're only allowed $allowed guesses :(\n";
    print "Answer was: $answer\n";

    $dbm{lost}++;
    $dbm{total}++;    # for stats

}

print "-----------------------------------------\n";

print "Total games played: $dbm{total}\n";
$wonpercent  = ( $dbm{won} / $dbm{total} ) * 100;
$lostpercent = ( $dbm{lost} / $dbm{total} ) * 100;

print "Games won: $dbm{won}\n";
print "Games lost: $dbm{lost}\n";

printf( "Percent won: %.0f\n",  $wonpercent );
printf( "Percent lost: %.0f\n", $lostpercent );

print "-----------------------------------------\n";