#!/usr/bin/env perl
use strictures 1;

use Getopt::Long;
use Pod::Usage;
use System::Introspector::State;
use File::Tree::Snapshot;
use System::Introspector::Config;

GetOptions(
    'c|config=s'    => \my $config_file,
    's|storage=s'   => \my $storage_dir,
    'a|all'         => \my $update_all,
    'g|group=s'     => \my @update_groups,
    'h|help'        => sub { pod2usage(0) },
) or pod2usage(2);

die "Requires --storage\n"
    unless defined $storage_dir;

die "Requires --config\n"
    unless defined $config_file;

die "Requires --all or --group option\n"
    unless $update_all or @update_groups;

my $config = System::Introspector::Config->new(
    config_file => (defined($config_file)
                    ? $config_file
                    : "$storage_dir/main.conf"),
);

$config->has_group($_) or die "Unknown group '$_'\n"
    for @update_groups;

@update_groups = $config->groups
    if $update_all;

my $state = System::Introspector::State->new(
    config => $config,
    root   => $storage_dir,
);

$state->gather(@update_groups);

__END__

=head1 NAME

system-introspector - Generate System Introspection Data

=head1 SYNOPSIS

    system-introspector --storage <path> [OPTIONS]

=head1 OPTIONS

=head2 -s <path>, --storage <path>

Path to storage. Always required.

=head2 -c <file>, --config <file>

Path to the configuration file.

=head2 -a, --all

Fetch all groups.

=head2 -g <group>, --group <group>

Fetch the specified group. Can be used multiple times.

=head2 -h, --help

Display help.

=cut