class RuboCop::Cop::HashAlignmentStyles::KeyAlignment

def checkable_layout?(_node)
  true
end

def deltas(first_pair, current_pair)
  if Util.begins_its_line?(current_pair.source_range)
    key_delta = first_pair.key_delta(current_pair)
    separator_delta = separator_delta(current_pair)
    value_delta = value_delta(current_pair)
    { key: key_delta, separator: separator_delta, value: value_delta }
  else
    {}
  end
end

def deltas_for_first_pair(first_pair)
  {
    separator: separator_delta(first_pair),
    value: value_delta(first_pair)
  }
end

def separator_delta(pair)
  if pair.hash_rocket?
    correct_separator_column = pair.key.source_range.end.column + 1
    actual_separator_column = pair.loc.operator.column
    correct_separator_column - actual_separator_column
  else
    0
  end
end

def value_delta(pair)
  return 0 if pair.value_on_new_line? || pair.value_omission?
  correct_value_column = pair.loc.operator.end.column + 1
  actual_value_column = pair.value.loc.column
  correct_value_column - actual_value_column
end