import {
  IconButton,
  List,
  ListItem,
  ListItemText,
  Menu,
  MenuItem,
  SwipeableDrawer,
} from '@material-ui/core';
import {BugReport, Menu as MenuIcon, Settings} from '@material-ui/icons';
import LogOutButton from 'material-ui/svg-icons/action/power-settings-new';
import {Toolbar, ToolbarGroup} from 'material-ui/Toolbar';
import PropTypes from 'prop-types';
import React, {useCallback, useState, useRef} from 'react';
import {useSelector} from 'react-redux';
import {Link} from 'react-router-dom';
import styled from 'styled-components';

import {GITHUB_REPO} from '../../config';
import AppLogo from '../App/AppLogo';
import constants from '../constants';

const REPORT_BUG_PATH = `//github.com/${GITHUB_REPO}/issues`;

// create styling for each major subcomponent of Header
const VerticalAlignToolbar = styled(ToolbarGroup)`
  display: flex;
  align-items: center;
  justify-content: center;
`;

const VerticalAlignDiv = styled.div`
  display: flex;
  align-items: center;
  justify-content: center;
`;

const TabContainer = styled.div`
  display: flex;
  flex-direction: column;
  font-weight: ${constants.fontWeightNormal};
  height: 100%;
  justify-content: center;
  margin: 0 12px;
  text-align: center;
  position: relative;
`;

const AppLogoWrapper = styled.div`
  // for small screens, remove the applogo from the navigation
  @media screen and (max-width: 800px) {
    display: none;
  }
`;

const DropdownMenu = styled(Menu)`
  & .MuiMenu-paper {
    background: ${constants.primarySurfaceColor};
  }
`;

const DropdownMenuItem = styled(MenuItem)`
  color: ${constants.primaryTextColor} !important;
  padding-bottom: 12px !important;
  padding-top: 12px !important;
`;

const ToolbarHeader = styled(Toolbar)`
  backdrop-filter: blur(16px);
  background-color: ${constants.defaultPrimaryColorSolid} !important;
  height: 56px;
  left: 0;
  padding: 8px 16px !important;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100%;

  & a {
    color: ${constants.primaryTextColor};

    &:hover {
      color: ${constants.primaryTextColor};
      opacity: 0.6;
    }
  }
`;

const MenuContent = styled.div`
  background: ${constants.primarySurfaceColor};
  max-width: 300px;
  height: 100%;
  overflow: auto;
  min-width: 220px;
`;

const MenuLogoWrapper = styled.div`
  align-items: center;
  display: flex;
  justify-content: center;
  padding: 24px 0;
`;

const DrawerLink = styled(Link)`
  color: ${constants.textColorPrimary};
`;

const LinkGroup = ({navbarPages}) => (
  <VerticalAlignToolbar>
    {navbarPages.map((page) => (
      <TabContainer key={page.key}>
        <Link to={page.to}>{page.label}</Link>
        {Boolean(page.feature) && (
          <div
            style={{
              position: 'absolute',
              textTransform: 'uppercase',
              fontSize: '10px',
              top: '-10px',
              right: '0',
              color: 'lightblue',
            }}
          >
            {page.feature}
          </div>
        )}
      </TabContainer>
    ))}
  </VerticalAlignToolbar>
);

LinkGroup.propTypes = {
  navbarPages: PropTypes.shape([{}]),
};

const SettingsGroup = ({ children }) => {
  const [anchorEl, setAnchorEl] = useState(null); // setanchorel hook
  const buttonRef = useRef(); // ref for anchorEl

  // init the handleclose callback: clear setanchorel
  const handleClose = useCallback(() => {
    setAnchorEl(undefined);
  }, [setAnchorEl]);

  return (
    <>
      <IconButton
        ref={buttonRef}
        color="inherit"
        onClick={(e) => setAnchorEl(e.currentTarget)}
      >
        <Settings />
      </IconButton>
      {buttonRef.current && (
        <DropdownMenu
          anchorEl={buttonRef.current}
          open={Boolean(anchorEl)}
          onClose={handleClose}
          PaperProps={{ style: { maxHeight: 600 }}}
        >
          {children}
        </DropdownMenu>
      )}
    </>
  );
};

const MenuButtonWrapper = styled.div`
  margin-right: 12px;
`;

const LogoGroup = ({ onMenuClick }) => (
  <div style={{ marginRight: 16 }}>
    <VerticalAlignToolbar>
      <MenuButtonWrapper>
        <IconButton edge="start" color="inherit" onClick={onMenuClick}>
          <MenuIcon />
        </IconButton>
      </MenuButtonWrapper>
      <AppLogoWrapper>
        <AppLogo />
      </AppLogoWrapper>
    </VerticalAlignToolbar>
  </div>
);

LogoGroup.propTypes = {
  onMenuClick: PropTypes.func,
};

const ReportBug = ({ strings }) => (
  <DropdownMenuItem
    component="a"
    href={REPORT_BUG_PATH}
    target="_blank" // open in new tab
    rel="noopener noreferrer" // security for opening in new tab
  >
    <BugReport style={{ marginRight: 32, width: 24, height: 24 }} />
    {strings.app_report_bug}
  </DropdownMenuItem>
);

ReportBug.propTypes = {
  strings: PropTypes.shape({}),
};

const LogOut = ({ strings }) => (
  <DropdownMenuItem
    component="a"
    href={`${process.env.REACT_APP_API_HOST}/logout`}
    rel="noopener noreferrer"
  >
    <LogOutButton style={{ marginRight: 32, width: 24, height: 24 }} />
    {strings.app_logout}
  </DropdownMenuItem>
);

LogOut.propTypes = {
  strings: PropTypes.shape({}),
};

const Header = ({ location, disableSearch }) => {
  // set hooks
  const [menuIsOpen, setMenuState] = useState(false);

  // state selectors
  const small = useSelector((state) => state.browser.greaterThan.small);
  const user = useSelector((state) => state.app.metadata.data.user);
  const strings = useSelector((state) => state.app.strings);

  // data encoding navbar
  const navbarPages = [
    {
      key: 'header_matches',
      to: '/matches',
      label: strings.header_matches,
    },
    {
      key: 'header_heroes',
      to: '/heroes',
      label: strings.header_heroes,
    },
    {
      key: 'header_explorer',
      to: '/explorer',
      label: strings.header_explorer,
    },
    {
      key: 'header_combos',
      to: '/combos',
      label: strings.combos,
      feature: '2020 BP',
    },
    {
      key: 'header_api',
      to: '/api-keys',
      label: strings.header_api,
    },
  ];

  // add some pages revealed by drawer
  const drawerPages = [
    ...navbarPages,
    {
      key: 'header_distributions',
      to: '/distributions',
      label: strings.header_distributions,
    },
    {
      key: 'header_records',
      to: '/records',
      label: strings.header_records,
    },
    {
      key: 'header_meta',
      to: '/meta',
      label: strings.header_meta,
    },
    {
      key: 'header_scenarios',
      to: '/scenarios',
      label: strings.header_scenarios,
    },
  ];

  return (
    <>
      <ToolbarHeader>
        {/* logo/settings groups */}
        <VerticalAlignDiv>
          <LogoGroup onMenuClick={() => setMenuState(true)} />
          {small && <LinkGroup navbarPages={navbarPages} />}
        </VerticalAlignDiv>
        <VerticalAlignDiv style={{ marginLeft: '16px' }}>
          <SettingsGroup>
            <ReportBug strings={strings} />
            {user ? <LogOut strings={strings} /> : null}
          </SettingsGroup>
        </VerticalAlignDiv>
        {/* drawer */}
        <SwipeableDrawer
          onOpen={() => setMenuState(true)}
          onClose = {() => setMenuState(false)}
          open = {menuIsOpen}
        >
          <MenuContent>
            <MenuLogoWrapper>
              <div>
                <AppLogo onClick={() => setMenuState(false)} />
              </div>
            </MenuLogoWrapper>
            {/* render the drawer links */}
            <List>
              {drawerPages.map((page) => (
                <DrawerLink key={`drawer__${page.to}`} to={page.to}>
                  <ListItem
                    button
                    key={`drawer__${page.to}`}
                    onClick={() => setMenuState(false)}
                  >
                    <ListItemText primary={page.label} />
                  </ListItem>
                </DrawerLink>
              ))}
            </List>
            {/* render user links/login links */}
            <List>
              {user ? (
                <>
                  <DrawerLink to={`/players/${user.account_id}`}>
                    <ListItem button onClick={() => setMenuState(false)}>
                      <ListItemText primary={strings.app_my_profile} />
                    </ListItem>
                  </DrawerLink>
                  <DrawerLink
                    as="a"
                    href={`${process.env.REACT_APP_API_HOST}/logout`}
                  >
                    <ListItem button onClick={() => setMenuState(false)}>
                      <ListItemText primary={strings.app_logout} />
                    </ListItem>
                  </DrawerLink>
                </>
              ) : (
                <>
                  <DrawerLink
                    as="a"
                    href={`${process.env.REACT_APP_API_HOST}/login`}
                  >
                    <ListItem button onClick={() => setMenuState(false)}>
                      <ListItemText primary={strings.app_login} />
                    </ListItem>
                  </DrawerLink>
                </>
              )}
            </List>
          </MenuContent>
        </SwipeableDrawer>
      </ToolbarHeader>
    </>
  );
};

export default Header;