Ohai.plugin(:ZeroTier) do
    provides 'zerotier'

    def zerotier_command (subcommand)
        return "<%= @zerotier_binary %> <% unless @zerotier_binary.end_with?('-cli') %>-q<% end %> #{subcommand} -p<%= @control_port %> -D<%= @data_dir %>"
    end

    def linux_get_networks
        networks = Mash.new
        cmd = zerotier_command('listnetworks')
        Ohai::Log.info(cmd)
        so = shell_out(cmd)
        first_line = true
        so.stdout.lines do |line|
            if first_line
                # skip the header line
                first_line = false
                next
            end

            data = line.strip.split(/\s+/)

            cur_network = Mash.new
            cur_network[:network_name] = data[3]
            cur_network[:mac] = data[4]
            cur_network[:status] = data[5]
            cur_network[:type] = data[6]
            cur_network[:interface] = data[7]
            cur_network[:addresses] = []

            data[8].split(',').each do |addr|
                cur_network[:addresses].push(addr)
            end

            networks[data[2]] = cur_network
        end
        return networks
    end

    def linux_get_node_id
        node_id = ''

        if ::File.exists?("<%= @data_dir %>/identity.public")
            node_id = ::File.read("<%= @data_dir %>/identity.public")
            node_id = node_id[0..9]
            Ohai
        else
            Ohai::Log.warn("<%= @data_dir %>/identity.public' does not exist")
        end

        return node_id unless node_id.empty?
    end

    def get_version
        so = shell_out("<%= @zerotier_binary %> -v 2>&1")
        version = so.stdout.strip
        return version unless version.empty?
    end

    collect_data(:linux) do
        if ::File.exists?("<%= @zerotier_binary %>")
            zerotier Mash.new
            zerotier[:version]    = get_version
            zerotier[:node_id]    = linux_get_node_id
            zerotier[:networks]   = linux_get_networks
        else
            Ohai::Log.warn("Cannot find zerotier binary")
        end
    end
end