// @flow

import * as React from 'react';
import styled, { css } from 'styled-components';

const LabelElement = styled.span`
  position: relative;
  font-size: 0.866rem;
  color: ${({ theme }) => theme.labelColor};
  line-height: 1.8;
  display: inline-block;
  text-align: ${props => props.align};

  ${({ required, theme }) =>
    required &&
    css`
      :before {
        content: '';
        display: inline-block;
        background-color: ${theme.alarm};
        margin: -0.133rem 0.533rem 0 0;
        vertical-align: middle;
        height: 0.266rem;
        width: 0.266rem;
        border-radius: 50%;
        position: absolute;
        left: -0.666rem;
        top: 0.666rem;
      }
    `};

  ${props =>
    props.inline &&
    css`
      overflow: hidden;
      white-space: nowrap;
      text-overflow: ellipsis;
      width: 1%;
      min-width: 8rem;
      padding-right: 1.2rem;
      line-height: 1;
      vertical-align: top;
      padding-top: calc(0.46633rem + 2px);
    `};
`;

type Props = {
  /** text of the label */
  text: string,
  /** is required? */
  required?: boolean,
  /** label display inline */
  inline?: boolean,
  /** align `left` or `right` */
  align?: 'left' | 'right',
};

const Label = ({ text, required, inline, align }: Props) => (
  <LabelElement inline={inline} align={align} required={required}>
    {text}
  </LabelElement>
);

Label.defaultProps = {
  required: false,
  align: 'left',
  inline: false,
};

export default Label;