#!/usr/bin/perl

use strict;
use warnings;

use SiteSummary;
use Getopt::Std;

my %hostclasses;
my %hostmap;
my %opts;

sub usage {
    my $retval = shift;
    print <<EOF;
Usage: $0 [-l]
   -l   list hosts with the host class version
EOF
    exit $retval;
}

getopt("l", \%opts) || usage(1);

for_all_hosts(\&handle_host);

print_summary();

sub handle_host {
    my $hostid = shift;
    #print "$hostid\n";
    for my $hostclass (get_hostclass($hostid)) {
        $hostclass = "" unless defined $hostclass;
        $hostclasses{$hostclass}++;
        $hostmap{$hostclass} = [] unless exists $hostmap{$hostclass};
        push @{$hostmap{$hostclass}}, $hostid ;
    }
}

sub print_summary {
    printf("  %-20s %5s\n", "hostclass", "count");
    for my $hostclass (sort keys %hostclasses) {
        printf("  %-20s %5d\n", $hostclass, $hostclasses{$hostclass});
        if (exists $opts{l}) {
            for my $hostid (sort @{$hostmap{$hostclass}}) {
                my $hostname = get_hostname($hostid);
                printf "    %s %s %s\n", $hostname, $hostclass, $hostid;
            }
        }
    }
}