import React , { useState , useRef , useCallback } from "react" ; import styled from "styled-components" ; import colors from "shared/lib/designSystem/colors" ; import theme from "shared/lib/designSystem/theme" ; import { BellIcon } from "shared/lib/assets/icons/icons" ; import useOutsideAlerter from "shared/lib/hooks/useOutsideAlerter" ; import NotificationView from "./NotificationView" ; import useScreenSize from "shared/lib/hooks/useScreenSize" ; import sizes from "shared/lib/designSystem/sizes" ; import useNotifications from "shared/lib/hooks/useNotifications" ; const ButtonContainer = styled . div `
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: ${ theme . border . radius };
  background: ${ colors . background . two };
  height: 48px;
  width: 48px;

  &:hover {
    svg {
      path {
        opacity: ${ theme . hover . opacity };
      }
    }
  }
` ; const UnreadIndicator = styled . div `
  position: absolute;
  top: 13px;
  right: 13px;
  width: 6px;
  height: 6px;
  border-radius: 3px;
  background: ${ colors . red };
` ; const NotificationButton = ( ) => { const desktopMenuRef = useRef ( null ) ; const [ show , setShow ] = useState ( false ) ; const { width } = useScreenSize ( ) ; const { notifications , lastReadTimestamp , updateLastReadTimestamp } = useNotifications ( ) ; const handleCloseMenu = useCallback ( ( ) => { setShow ( false ) ; updateLastReadTimestamp ( ) ; } , [ updateLastReadTimestamp ] ) ; useOutsideAlerter ( desktopMenuRef , ( ) => { if ( width > sizes . md && show ) handleCloseMenu ( ) ; } ) ; return ( < div className = "d-flex position-relative" ref = { desktopMenuRef } > < ButtonContainer role = "button" onClick = { ( ) => ( show ? handleCloseMenu ( ) : setShow ( true ) ) } > < BellIcon height = { 16 } width = { 16 } / > { notifications . find ( ( notification ) => lastReadTimestamp && lastReadTimestamp <= notification . date . valueOf ( ) ) && < UnreadIndicator />} < /ButtonContainer> < NotificationView show = { show } onClose = { handleCloseMenu } / > < /div>); } ; export default NotificationButton ;