class RuboCop::Cop::Lint::UnneededCopEnableDirective

def all_or_name(name)
  name == 'all' ? 'all cops' : name
end

def autocorrect(comment_and_name)
  lambda do |corrector|
    corrector.remove(range_with_comma(*comment_and_name))
  end
end

def comment_start(comment)
  comment.loc.expression.begin_pos
end

def cop_name_indention(comment, name)
  comment.text.index(name)
end

def investigate(processed_source)
  return if processed_source.blank?
  offenses = processed_source.comment_config.extra_enabled_comments
  offenses.each do |comment, name|
    add_offense(
      [comment, name],
      location: range_of_offense(comment, name),
      message: format(MSG, cop: all_or_name(name))
    )
  end
end

def range_of_offense(comment, name)
  start_pos = comment_start(comment) + cop_name_indention(comment, name)
  range_between(start_pos, start_pos + name.size)
end

def range_to_remove(begin_pos, end_pos, comma_pos, comment)
  start = comment_start(comment)
  buffer = processed_source.buffer
  range_class = Parser::Source::Range
  case comma_pos
  when :before
    range_class.new(buffer, start + begin_pos - 1, start + end_pos)
  when :after
    range_class.new(buffer, start + begin_pos, start + end_pos + 1)
  else
    range_class.new(buffer, start, comment.loc.expression.end_pos)
  end
end

def range_with_comma(comment, name)
  source = comment.loc.expression.source
  begin_pos = cop_name_indention(comment, name)
  end_pos = begin_pos + name.size
  begin_pos = reposition(source, begin_pos, -1)
  end_pos = reposition(source, end_pos, 1)
  comma_pos =
    if source[begin_pos - 1] == ','
      :before
    elsif source[end_pos] == ','
      :after
    else
      :none
    end
  range_to_remove(begin_pos, end_pos, comma_pos, comment)
end