module DpkgInv

# File lib/dpkginv/base.rb, line 14
def self.inventory
    o = Ohai::System.new

    # ohai has dozens of plugins; let's only load the ones we need...
    o.require_plugin('linux/lsb')
    o.require_plugin('linux/hostname')
    o.require_plugin('kernel')
    o.require_plugin('dpkg')

    json = {
        :fqdn   =>  o[:fqdn],
        :lsb     =>  {
            :id             =>  o[:lsb][:id],
            :release        =>  o[:lsb][:release],
            :codename       =>  o[:lsb][:codename],
            :description    =>  o[:lsb][:description]
        },
        :kernel =>  {
            :release    =>  o[:kernel][:release],
            :machine    =>  o[:kernel][:machine]
        },
        :dpkg   =>  o[:dpkg],
        :created_at => Time.now.iso8601
    }

    #
    # load system_id from external file,  but it's not required if you
    # just want a JSON representation of your packages.  it can be set by
    # config management, etc.
    #
    config_file = '/etc/dpkginv.conf'
    if File.exists?(config_file)
        config = YAML.load_file(config_file)
        unless config == false || config['system_id'].nil?
            json[:system_id] = config['system_id']
        end
    end

    return json
end

# File lib/dpkginv/base.rb, line 10
def self.run
    puts JSON.pretty_generate(inventory)
end