import React, { useCallback, useContext, useEffect, useMemo, useRef, useState } from 'react';
import { FormattedMessage, useIntl } from 'dumi';
import classNames from 'classnames';
import { Button, Col, Modal, Popover, Row, Select } from 'antd';
import { MenuOutlined } from '@ant-design/icons';
import canUseDom from 'rc-util/lib/Dom/canUseDom';
import type { DirectionType } from 'antd/es/config-provider';
import * as utils from '../../utils';
import { getThemeConfig, ping } from '../../utils';
import packageJson from '../../../../package.json';
import Logo from './Logo';
import SearchBar from './SearchBar';
import More from './More';
import Navigation from './Navigation';
import Github from './Github';
import type { SiteContextProps } from '../SiteContext';
import SiteContext from '../SiteContext';
import { AlgoliaConfig } from './algolia-config';
import { useLocation, useNavigate } from 'dumi';
import { ClassNames, css } from '@emotion/react';
import useSiteToken from '../../../hooks/useSiteToken';
import useLocale from '../../../hooks/useLocale';

const RESPONSIVE_XS = 1120;
const RESPONSIVE_SM = 1200;

const { Option } = Select;

const antdVersion: string = packageJson.version;

const useStyle = () => {
  const { token } = useSiteToken();

  return {
    header: css`
      position: relative;
      z-index: 10;
      max-width: 100%;
      background: ${token.colorBgContainer};
      box-shadow: ${token.boxShadow};

      @media only screen and (max-width: ${token.mobileMaxWidth}px) {
        text-align: center;
      }
    `,
    menuRow: css`
      display: flex;
      align-items: center;
      margin: 0;

      > * {
        flex: none;
        margin: 0 12px 0 0;

        &:last-child {
          margin-right: 40px;
        }
      }

      ${token.antCls}-row-rtl & {
        > * {
          &:last-child {
            margin-right: 12px;
            margin-left: 40px;
          }
        }
      }
    `,
    headerButton: css`
      color: ${token.colorText};
      border-color: ${token.colorBorder};
    `,
    popoverMenu: {
      width: 300,

      [`${token.antCls}-popover-inner-content`]: {
        padding: 0,
      },
    },
  };
};

export interface HeaderProps {
  changeDirection: (direction: DirectionType) => void;
}

let docsearch: any;
const triggerDocSearchImport = () => {
  if (docsearch) {
    return Promise.resolve();
  }

  // @ts-ignore
  return import('docsearch.js').then(ds => {
    docsearch = ds.default;
  });
};

function initDocSearch({ isZhCN, navigate }: { isZhCN: boolean; navigate: any }) {
  if (!canUseDom()) {
    return;
  }

  triggerDocSearchImport().then(() => {
    docsearch({
      appId: AlgoliaConfig.appId,
      apiKey: AlgoliaConfig.apiKey,
      indexName: AlgoliaConfig.indexName,
      inputSelector: '#search-box input',
      algoliaOptions: AlgoliaConfig.getSearchParams(isZhCN),
      transformData: AlgoliaConfig.transformData,
      debug: AlgoliaConfig.debug,
      // https://docsearch.algolia.com/docs/behavior#handleselected
      handleSelected(input: any, _$1: unknown, suggestion: any) {
        navigate(suggestion.url);
        setTimeout(() => {
          input.setVal('');
        });
      },
    });
  });
}

const SHOULD_OPEN_ANT_DESIGN_MIRROR_MODAL = 'ANT_DESIGN_DO_NOT_OPEN_MIRROR_MODAL';

function disableAntdMirrorModal() {
  window.localStorage.setItem(SHOULD_OPEN_ANT_DESIGN_MIRROR_MODAL, 'true');
}

function shouldOpenAntdMirrorModal() {
  return !window.localStorage.getItem(SHOULD_OPEN_ANT_DESIGN_MIRROR_MODAL);
}

interface HeaderState {
  menuVisible: boolean;
  windowWidth: number;
  searching: boolean;
  showTechUIButton: boolean;
}

const Header: React.FC<HeaderProps> = props => {
  const intl = useIntl();
  const { changeDirection } = props;
  const [, lang] = useLocale();
  const [isClient, setIsClient] = React.useState(false);

  const themeConfig = getThemeConfig();
  const [headerState, setHeaderState] = useState<HeaderState>({
    menuVisible: false,
    windowWidth: 1400,
    searching: false,
    showTechUIButton: false,
  });
  const { direction, isMobile } = useContext<SiteContextProps>(SiteContext);
  const pingTimer = useRef<NodeJS.Timeout | null>(null);
  const location = useLocation();
  const { pathname, search } = location;
  const navigate = useNavigate();

  const style = useStyle();

  const handleHideMenu = useCallback(() => {
    setHeaderState(prev => ({ ...prev, menuVisible: false }));
  }, []);
  const onWindowResize = useCallback(() => {
    setHeaderState(prev => ({ ...prev, windowWidth: window.innerWidth }));
  }, []);
  const onTriggerSearching = useCallback((searching: boolean) => {
    setHeaderState(prev => ({ ...prev, searching }));
  }, []);
  const handleShowMenu = useCallback(() => {
    setHeaderState(prev => ({ ...prev, menuVisible: true }));
  }, []);
  const onMenuVisibleChange = useCallback((visible: boolean) => {
    setHeaderState(prev => ({ ...prev, menuVisible: visible }));
  }, []);
  const onDirectionChange = useCallback(() => {
    changeDirection?.(direction !== 'rtl' ? 'rtl' : 'ltr');
  }, [direction]);

  useEffect(() => {
    handleHideMenu();
  }, [location]);

  useEffect(() => {
    setIsClient(typeof window !== 'undefined');
    initDocSearch({ isZhCN: lang === 'cn', navigate });
    onWindowResize();
    window.addEventListener('resize', onWindowResize);
    pingTimer.current = ping(status => {
      if (status !== 'timeout' && status !== 'error') {
        setHeaderState(prev => ({ ...prev, showTechUIButton: true }));
        if (
          process.env.NODE_ENV === 'production' &&
          window.location.host !== 'ant-design.antgroup.com' &&
          shouldOpenAntdMirrorModal()
        ) {
          Modal.confirm({
            title: '提示',
            content: '内网用户推荐访问国内镜像以获得极速体验～',
            okText: '🚀 立刻前往',
            cancelText: '不再弹出',
            closable: true,
            onOk() {
              window.open('https://ant-design.antgroup.com', '_self');
              disableAntdMirrorModal();
            },
            onCancel() {
              disableAntdMirrorModal();
            },
          });
        }
      }
    });
    return () => {
      window.removeEventListener('resize', onWindowResize);
      if (pingTimer.current) {
        clearTimeout(pingTimer.current);
      }
    };
  }, []);

  // eslint-disable-next-line class-methods-use-this
  const handleVersionChange = useCallback((url: string) => {
    const currentUrl = window.location.href;
    const currentPathname = window.location.pathname;
    if (/overview/.test(currentPathname) && /0?[1-39][0-3]?x/.test(url)) {
      window.location.href = currentUrl
        .replace(window.location.origin, url)
        .replace(/\/components\/overview/, `/docs${/0(9|10)x/.test(url) ? '' : '/react'}/introduce`)
        .replace(/\/$/, '');
      return;
    }
    window.location.href = currentUrl.replace(window.location.origin, url);
  }, []);

  const onLangChange = useCallback(() => {
    const currentProtocol = `${window.location.protocol}//`;
    const currentHref = window.location.href.slice(currentProtocol.length);

    if (utils.isLocalStorageNameSupported()) {
      localStorage.setItem('locale', utils.isZhCN(pathname) ? 'en-US' : 'zh-CN');
    }
    window.location.href =
      currentProtocol +
      currentHref.replace(
        window.location.pathname,
        utils.getLocalizedPathname(pathname, !utils.isZhCN(pathname), search).pathname,
      );
  }, [location]);

  const nextDirectionText = useMemo<string>(
    () => (direction !== 'rtl' ? 'RTL' : 'LTR'),
    [direction],
  );

  const getDropdownStyle = useMemo<React.CSSProperties>(
    () => (direction === 'rtl' ? { direction: 'ltr', textAlign: 'right' } : {}),
    [direction],
  );

  const { menuVisible, windowWidth, searching, showTechUIButton } = headerState;
  const docVersions: Record<string, string> = {
    [antdVersion]: antdVersion,
    ...themeConfig?.docVersions,
  };
  const versionOptions = Object.keys(docVersions).map(version => (
    <Option value={docVersions[version]} key={version}>
      {version}
    </Option>
  ));

  const isHome = ['', 'index', 'index-cn'].includes(pathname);

  const isZhCN = lang === 'cn';
  const isRTL = direction === 'rtl';
  let responsive: null | 'narrow' | 'crowded' = null;
  if (windowWidth < RESPONSIVE_XS) {
    responsive = 'crowded';
  } else if (windowWidth < RESPONSIVE_SM) {
    responsive = 'narrow';
  }

  const headerClassName = classNames({
    clearfix: true,
    'home-header': isHome,
  });

  const sharedProps = {
    isZhCN,
    isRTL,
    isClient,
  };

  const navigationNode = (
    <Navigation
      key="nav"
      {...sharedProps}
      responsive={responsive}
      isMobile={isMobile}
      showTechUIButton={showTechUIButton}
      directionText={nextDirectionText}
      onLangChange={onLangChange}
      onDirectionChange={onDirectionChange}
    />
  );

  let menu: (React.ReactElement | null)[] = [
    navigationNode,
    <Select
      key="version"
      className="version"
      size="small"
      defaultValue={antdVersion}
      onChange={handleVersionChange}
      dropdownStyle={getDropdownStyle}
      getPopupContainer={trigger => trigger.parentNode}
    >
      {versionOptions}
    </Select>,
    <Button size="small" onClick={onLangChange} css={style.headerButton} key="lang-button">
      <FormattedMessage id="app.header.lang" />
    </Button>,
    <Button
      size="small"
      onClick={onDirectionChange}
      css={style.headerButton}
      key="direction-button"
    >
      {nextDirectionText}
    </Button>,
    <More key="more" {...sharedProps} />,
    <Github key="github" responsive={responsive} />,
  ];

  if (windowWidth < RESPONSIVE_XS) {
    menu = searching ? [] : [navigationNode];
  } else if (windowWidth < RESPONSIVE_SM) {
    menu = searching ? [] : menu;
  }

  const colProps = isHome
    ? [{ flex: 'none' }, { flex: 'auto' }]
    : [
        { xxl: 4, xl: 5, lg: 6, md: 6, sm: 24, xs: 24 },
        { xxl: 20, xl: 19, lg: 18, md: 18, sm: 0, xs: 0 },
      ];

  return (
    <header css={style.header} className={headerClassName}>
      {isMobile && (
        <ClassNames>
          {({ css }) => (
            <Popover
              overlayClassName={css(style.popoverMenu)}
              placement="bottomRight"
              content={menu}
              trigger="click"
              open={menuVisible}
              arrowPointAtCenter
              onOpenChange={onMenuVisibleChange}
            >
              <MenuOutlined className="nav-phone-icon" onClick={handleShowMenu} />
            </Popover>
          )}
        </ClassNames>
      )}
      <Row style={{ flexFlow: 'nowrap', height: 64 }}>
        <Col {...colProps[0]}>
          <Logo {...sharedProps} location={location} />
        </Col>
        <Col {...colProps[1]} css={style.menuRow}>
          <SearchBar
            key="search"
            {...sharedProps}
            algoliaConfig={AlgoliaConfig}
            responsive={responsive}
            onTriggerFocus={onTriggerSearching}
          />
          {!isMobile && menu}
        </Col>
      </Row>
    </header>
  );
};

export default Header;