overleaf/services/web/frontend/js/shared/components/notification.tsx

import classNames from 'classnames'
import React, { ReactElement, useState } from 'react'
import { useTranslation } from 'react-i18next'
import MaterialIcon from './material-icon'

type NotificationType = 'info' | 'success' | 'warning' | 'error'

type NotificationProps = {
  action?: React.ReactElement
  ariaLive?: 'polite' | 'off' | 'assertive'
  content: React.ReactElement
  customIcon?: React.ReactElement
  isDismissible?: boolean
  isActionBelowContent?: boolean
  onDismiss?: () => void
  title?: string
  type: NotificationType
}

function NotificationIcon({
  notificationType,
  customIcon,
}: {
  notificationType: NotificationType
  customIcon?: ReactElement
}) {
  let icon = <MaterialIcon type="info" />

  if (customIcon) {
    icon = customIcon
  } else if (notificationType === 'success') {
    icon = <MaterialIcon type="check_circle" />
  } else if (notificationType === 'warning') {
    icon = <MaterialIcon type="warning" />
  } else if (notificationType === 'error') {
    icon = <MaterialIcon type="error" />
  }

  return <div className="notification-icon">{icon}</div>
}

function Notification({
  action,
  ariaLive,
  content,
  customIcon,
  isActionBelowContent,
  isDismissible,
  onDismiss,
  title,
  type,
}: NotificationProps) {
  type = type || 'info'
  const { t } = useTranslation()
  const [show, setShow] = useState(true)

  const notificationClassName = classNames(
    'notification',
    `notification-type-${type}`,
    isDismissible ? 'notification-dismissible' : '',
    isActionBelowContent ? 'notification-cta-below-content' : ''
  )

  const handleDismiss = () => {
    setShow(false)
    if (onDismiss) onDismiss()
  }

  if (!show) {
    return null
  }

  return (
    <div
      className={notificationClassName}
      aria-live={ariaLive || 'off'}
      role="alert"
    >
      <NotificationIcon notificationType={type} customIcon={customIcon} />

      <div className="notification-content-and-cta">
        <div className="notification-content">
          {title && (
            <p>
              <b>{title}</b>
            </p>
          )}
          {content}
        </div>
        {action && <div className="notification-cta">{action}</div>}
      </div>

      {isDismissible && (
        <div className="notification-close-btn">
          <button aria-label={t('close')} onClick={handleDismiss}>
            <MaterialIcon type="close" />
          </button>
        </div>
      )}
    </div>
  )
}

export default Notification