どどんとふの「削除可能」な部屋の一覧を表示するスクリプト

display_old_rooms.rb

#!/usr/bin/env ruby

require 'optparse'
require 'json'

PlayRoom = Struct.new(:num, :name, :updated)

def pad(s, width)
  char_lengths = s.each_char.map { |c| c.ord >= 8192 ? 2 : 1 }
  length = char_lengths.reduce(0, &:+)
  length < width ? "#{s}#{' ' * (width - length)}" : s
end

options = {}
opts = OptionParser.new
opts.on('-d', '--days DAYS', OptionParser::DecimalInteger,
        '経過日数。無指定の場合はすべてを表示する。') do |d|
  options[:days] = d
end

opts.parse!(ARGV)

dirs = Dir.glob('data_*/')
rooms = dirs.map do |dir|
  num = dir.match(/\d+/) { |m| m[0].to_i }
  updated = File.mtime(File.join(dir, 'chatLongLines.txt'))

  json = File.read(File.join(dir, 'playRoomInfo.json'))
  states = JSON.parse(json)
  name = states['playRoomName']

  PlayRoom.new(num, name, updated)
end

abandoned_rooms = rooms.
  select { |r| r.name.include?('削除可能') }.
  sort_by(&:num)
old_abandoned_rooms =
  if d = options[:days]
    sec = 24 * 60 * 60 * d
    now = Time.now
    abandoned_rooms.select { |r| (now - r.updated) >= sec }
  else
    abandoned_rooms
  end

old_abandoned_rooms.each do |r|
  puts('%4d    %s    %s' % [r.num, pad(r.name, 36), r.updated.strftime('%F %T')])
end