Method: Doing::Util::Backup#select_redo

Defined in:
lib/doing/util_backup.rb

#select_redo(filename = nil) ⇒ Object

Select from recent undos. If a filename is provided, only backups of that filename will be used.

Parameters:

  • filename (defaults to: nil) —

    The filename to restore

Raises:

  • (DoingRuntimeError) 


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# File 'lib/doing/util_backup.rb', line 117

def select_redo(filename = nil)
  filename ||= Doing.config.settings['doing_file']

  undones = Dir.glob("undone*#{File.basename(filename)}", base: backup_dir).sort

  raise DoingRuntimeError, 'End of redo history' if undones.empty?

  total = undones.count
  options = undones.each_with_object([]) do |file, arr|
    d, _base = date_of_backup(file)
    next if d.nil?

    arr.push("#{d.time_ago}\t#{File.join(backup_dir, file)}")
  end

  raise DoingRuntimeError, 'No backup files to load' if options.empty?

  backup_file = show_menu(options, filename)
  idx = undones.index(File.basename(backup_file))
  skipped = undones.slice!(idx, undones.count - idx)
  undone = skipped.shift

  redo_file = File.join(backup_dir, undone)

  FileUtils.move(redo_file, filename)

  skipped.each do |f|
    FileUtils.mv(File.join(backup_dir, f), File.join(backup_dir, f.sub(/^undone/, '')))
  end

  Doing.logger.warn('File update:', "restored undo step #{idx}/#{total}")
  Doing.logger.debug('Backup:', "#{total - skipped.count - 1} redos remaining")
end