#!/usr/bin/perl -w

use strict;
use warnings;
use JSON;
use Getopt::Long;
use File::Which;
use Sys::Hostname;

my $what = 'nodes';
my $pretty = 0;

GetOptions(
  'what=s' => \$what,
  'pretty' => \$pretty
);

my $pvesh = which('pvesh');
my $json = {};
@{$json->{data}} = ();

unless($pvesh){
  print to_json($json) . "\n";
  exit 0;
}

# Are we using the new pvesh for which we have to specify the output format ?
my $pvesh_opt = (system("$pvesh get /version --output-format=json >/dev/null 2>&1") == 0) ? '--output-format=json' : '';

if ($what eq 'nodes'){
  my $cluster_status = from_json(qx($pvesh get /cluster/status $pvesh_opt 2>/dev/null));
  foreach my $item (@{$cluster_status}){
    next if ($item->{type} ne 'node');
    push @{$json->{data}}, {
      '{#PVE_NODE_NAME}'  => $item->{name},
      '{#PVE_NODE_IP}'    => $item->{ip},
      '{#PVE_NODE_ID}'    => $item->{nodeid},
      '{#PVE_NODE_LOCAL}' => $item->{local}
    };
  }
} elsif ($what eq 'guests'){
  my $guests = from_json(qx($pvesh get /cluster/resources --type=vm $pvesh_opt 2>/dev/null));
  foreach my $guest (@{$guests}){
    push @{$json->{data}}, {
      '{#PVE_GUEST_ID}'       => $guest->{vmid},
      '{#PVE_GUEST_NODE}'     => $guest->{node},
      '{#PVE_GUEST_TYPE}'     => $guest->{type},
      '{#PVE_GUEST_NAME}'     => $guest->{name},
      '{#PVE_GUEST_TEMPLATE}' => $guest->{template}
    };
  }
} elsif ($what eq 'storage'){
  my $stores = from_json(qx($pvesh get /storage $pvesh_opt 2>/dev/null));
  foreach my $store (@{$stores}){
    push @{$json->{data}}, {
      '{#PVE_STOR_ID}'      => $store->{storage},
      '{#PVE_STOR_TYPE}'    => $store->{type},
      '{#PVE_STOR_STATUS}'  => (($store->{disable}) ? 0 : 1),
      '{#PVE_STOR_SHARED}'  => ($store->{shared} || 0),
      '{#PVE_STOR_CONTENT}' => $store->{content}
    };
  }
} elsif ($what eq 'pools'){
  my $pools = from_json(qx($pvesh get /pools $pvesh_opt 2>/dev/null));
  foreach my $pool (@{$pools}){
    push @{$json->{data}}, {
      '{#PVE_POOL_ID}'   => $pool->{poolid},
      '{#PVE_POOL_DESC}' => $pool->{comment}
    };
  }
}

print to_json($json, { pretty => $pretty }) . "\n";