# encoding: utf-8
# author: Christoph Hartmann
# author: Dominik Richter

require 'utils/simpleconfig'

class Mount < Inspec.resource(1)
  name 'mount'
  desc 'Use the mount InSpec audit resource to test if mount points.'
  example "
    describe mount('/') do
      it { should be_mounted }
      its(:count) { should eq 1 }
      its('device') { should eq  '/dev/mapper/VolGroup-lv_root' }
      its('type') { should eq  'ext4' }
      its('options') { should eq ['rw', 'mode=620'] }
    end
  "
  include MountParser

  attr_reader :file

  def initialize(path)
    @path = path
    return skip_resource 'The `mount` resource is not supported on your OS yet.' if !inspec.os.linux?
    @file = inspec.backend.file(@path)
  end

  def mounted?
    file.mounted?
  end

  def count
    mounted = file.mounted

    if !mounted.nil? && !mounted.stdout.nil? && !mounted.stdout.lines.nil?
      mounted.stdout.lines.count
    else
      nil
    end
  end

  def method_missing(name)
    return nil if !file.mounted?

    mounted = file.mounted
    return nil if mounted.nil? || mounted.stdout.nil?

    line = mounted.stdout
    # if we got multiple lines, only use the last entry
    line = mounted.stdout.lines.last if mounted.stdout.lines.count > 1

    # parse content if we are on linux
    @mount_options ||= parse_mount_options(line)
    @mount_options[name]
  end

  def to_s
    "Mount #{@path}"
  end
end