ghost-portal/packages/react-components/src/Tabs/Tab.tsx

// Copyright 2017-2023 @polkadot/react-components authors & contributors
// SPDX-License-Identifier: Apache-2.0

import type { TabItem } from './types';

import React from 'react';
import { NavLink } from 'react-router-dom';

import Badge from '../Badge';
import { styled } from '../styled';

interface Props extends TabItem {
  basePath: string;
  className?: string;
  count?: number;
  index: number;
}

function Tab ({ basePath, className = '', count, hasParams, index, isExact, isRoot, name, text }: Props): React.ReactElement<Props> {
  const to = isRoot
    ? basePath
    : `${basePath}/${name}`;

  // only do exact matching when not the fallback (first position tab),
  // params are problematic for dynamic hidden such as app-accounts
  const tabIsExact = isExact || !hasParams || index === 0;

  return (
    <StyledNavLink
      activeClassName='tabLinkActive'
      className={`${className} ui--Tab`}
      exact={tabIsExact}
      strict={tabIsExact}
      to={to}
    >
      <div className='tabLinkText'>
        {text}
      </div>
      {!!count && (
        <Badge
          className='tabCounter'
          color='counter'
          info={count}
        />
      )}
    </StyledNavLink>
  );
}

const StyledNavLink = styled(NavLink)`
  align-items: center;
  display: flex;
  color: #8B8B8B;
  height: 100%;
  padding: 0 1.5rem;
  position: relative;

  &:hover {
    color: #8B8B8B;

    .tabLinkText::after {
      background-color: #8B8B8B;
    }
  }

  &:hover .tabLinkText::after,
  &.tabLinkActive .tabLinkText::after {
    content: '';
    position: absolute;
    width: 3.14rem;
    height: 2px;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
  }

  &.tabLinkActive {
    color: var(--color-text) !important;
    font-weight: var(--font-weight-normal);

    &:hover {
      cursor: default;
    }
  }

  .tabLinkText {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
  }

  .tabCounter {
    margin: -1rem 0 -1rem 0.75rem;
  }

  .tabIcon {
    margin-left: 0.75rem;
  }
`;

export default React.memo(Tab);