import {
  AppShell,
  Burger,
  Group,
  Tooltip,
  UnstyledButton,
  Title,
  useMantineTheme,
} from '@mantine/core';
import { useDisclosure, useMediaQuery } from '@mantine/hooks';
import { useEffect, useMemo, useRef, useState } from 'react';
import { Link, useLocation, useNavigate } from 'react-router-dom';

import { default as LogoIcon } from '../../assets/icons/favicon';
import { mainLinksdata } from '../../data/navigationsLinks_1';
import { submenuLinks } from '../../data/submenuLinks_1';

import classes from './Appshell.module.css';

type AppShellWithMenuProps = {
  children?: React.ReactNode;
};

// Persistencia en localStorage
const STORAGE_KEY = 'lastSubmenuRoutes';

function getLastSubmenuRoute(section: string): string | null {
  try {
    const raw = localStorage.getItem(STORAGE_KEY);
    const parsed = raw ? JSON.parse(raw) : {};
    return parsed[section] ?? null;
  } catch {
    return null;
  }
}

function setLastSubmenuRoute(section: string, route: string) {
  try {
    const raw = localStorage.getItem(STORAGE_KEY);
    const parsed = raw ? JSON.parse(raw) : {};
    parsed[section] = route;
    localStorage.setItem(STORAGE_KEY, JSON.stringify(parsed));
  } catch {
    // fallback silencioso
  }
}

export function AppShellWithMenu({ children }: AppShellWithMenuProps) {
  const theme = useMantineTheme();
  const location = useLocation();
  const navigate = useNavigate();

  const isMobile = useMediaQuery('(max-width: 768px)');
  const [mobileOpened, { toggle: toggleMobile, close: closeMobile }] = useDisclosure(false);
  const [desktopOpened, { toggle: toggleDesktop, open: openDesktop }] = useDisclosure(true);

  const isCollapsed = useMemo(
    () => (isMobile ? !mobileOpened : !desktopOpened),
    [isMobile, mobileOpened, desktopOpened]
  );

  // Estado para el main link activo
  const [activeMain, setActiveMain] = useState<string>('Home');

  // Ref para saber si el usuario ha hecho clic manualmente en el main link
  const userClickedMainRef = useRef(false);

  useEffect(() => {
    const currentPath = location.pathname.toLowerCase().replace(/\/$/, '');

    let matchedMain: string | null = null;
    let maxMatchLength = 0;

    Object.entries(submenuLinks).forEach(([main, items]) => {
      items.forEach((item) => {
        const itemPath = item.to.toLowerCase().replace(/\/$/, '');
        if (
          currentPath === itemPath ||
          currentPath.startsWith(itemPath + '/')
        ) {
          if (itemPath.length > maxMatchLength) {
            matchedMain = main;
            maxMatchLength = itemPath.length;
          }
        }
      });
    });

    if (matchedMain) {
      setActiveMain(matchedMain);
    }
  }, [location.pathname]);

  const activeLink =
    submenuLinks[activeMain as keyof typeof submenuLinks]?.find(
      (item) => item.to === location.pathname
    )?.label ?? '';

  const mainLinks = mainLinksdata.map((link) => (
    <Tooltip
      label={link.label}
      position="right"
      withArrow
      transitionProps={{ duration: 0 }}
      key={link.label}
    >
      <UnstyledButton
        onClick={() => {
          userClickedMainRef.current = true;
          setActiveMain(link.label);

          const remembered = getLastSubmenuRoute(link.label);
          const fallback = submenuLinks[link.label as keyof typeof submenuLinks]?.[0]?.to;

          if (isCollapsed && (remembered || fallback)) {
            navigate(remembered ?? fallback);
          }
        }}
        className={classes.mainLink}
        data-active={link.label === activeMain || undefined}
      >
        <link.icon />
      </UnstyledButton>
    </Tooltip>
  ));

  const links = (submenuLinks[activeMain as keyof typeof submenuLinks] || []).map((item) => (
    <Link
      className={classes.link}
      data-active={activeLink === item.label || undefined}
      to={item.to}
      key={item.label}
      style={{ display: isCollapsed ? 'none' : 'block' }}
      onClick={() => {
        setLastSubmenuRoute(activeMain, item.to);
        if (isMobile) closeMobile();
      }}
    >
      {item.label}
    </Link>
  ));

  useEffect(() => {
    if (!isMobile) openDesktop();
  }, [isMobile, openDesktop]);

  return (
    <AppShell
      header={{ height: 60 }}
      navbar={{
        width: isCollapsed ? 60 : 300,
        breakpoint: 'sm',
        collapsed: { mobile: !mobileOpened, desktop: !desktopOpened },
      }}
      padding="md"
    >
      {/* Header */}
      <AppShell.Header>
        <Group h="100%" px="sm">
          <Burger opened={mobileOpened} onClick={toggleMobile} hiddenFrom="sm" size="sm" />
          <Burger opened={desktopOpened} onClick={toggleDesktop} visibleFrom="sm" size="sm" />
          <LogoIcon
            style={{ width: 30, height: 30 }}
            circleFill={theme.colors.brand[9]}
            pathFill={theme.colors.secondary[2]}
          />
        </Group>
      </AppShell.Header>

      {/* Navbar */}
      <AppShell.Navbar>
        <div className={classes.wrapper}>
          <div className={classes.aside}>
            <div className={classes.topSection}>{mainLinks}</div>
          </div>
          <div className={classes.main}>
            {!isCollapsed && (
              <Title order={4} className={classes.title}>
                {activeMain}
              </Title>
            )}
            {links}
          </div>
        </div>
      </AppShell.Navbar>

      {/* Main Content */}
      <AppShell.Main>{children}</AppShell.Main>
    </AppShell>
  );
}