#!/usr/bin/env ruby

begin
  require 'tms'
rescue LoadError
  require 'rubygems'
  require 'tms'
end

require 'optparse'

ids, options = ARGV.partition{ |arg| arg =~ /^-?\d+$/ }
OptionParser.new do |op|
  op.banner = <<-BANNER
Usege:
  List:                #{op.program_name} [options]
  Diff:                #{op.program_name} [options] id1 id2
  Diff with previous:  #{op.program_name} [options] id
  BANNER

  op.on('-d', '--directory DIRECTORY', 'Use backup directory') do |dir|
    Tms::Backup.backups_dir = dir
  end

  op.on('-f', '--filter DIRECTORY', 'Show diff starting from directory') do |dir|
    Tms::Backup.filter_dir = dir
  end

  op.on('-p', '--progress', 'Show backups in progress') do
    Tms::Backup.show_in_progress = true
  end
end.parse!(options)

ids = ids.map(&:to_i)
case ids.length
when 0
  Tms.list
when 1
  Tms.diff(ids[0] - 1, ids[0])
when 2
  Tms.diff(ids[0], ids[1])
end