src/components/button.js


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import React from 'react'
import { css } from '@emotion/core'
import { Link } from 'gatsby'

import { margins, radius, transitions, colours } from './globals'

const makeButtonStyle = p =>
  css`
    font-size: ${p.fontSize || '1em'};
    font-weight: ${p.fontWeight || '500'};
    margin: 0;
    padding: ${margins.md}px ${margins.md}px;
    border: 0.5px solid #ffffff;
    border-radius: ${radius.sm}px;
    display: block;
    transition: ${transitions.hover};
    text-decoration: none;
    background: ${p.background || 'none'};
    &:hover {
      background: ${p.hoverBackground || 'none'};
      border-color: ${p.background || 'none'};
      color: ${p.hoverColour || 'initial'};
    }
  `

export const Button = p => {
  const buttonStyle = makeButtonStyle(p)
  return (
    <Link to={p.to} css={buttonStyle} role="button">
      {p.children}
    </Link>
  )
}

export const DefaultButton = p => (
  <Button
    {...p}
    background={colours.background}
    hoverBackground={colours.main}
    hoverColour={colours.background}
  />
)