Getting Started with VUI

'use client';

import React, { createContext, useContext, useEffect, useState } from 'react';

type Theme = 'light' | 'dark' | 'system';

interface ThemeContextType {
  theme: Theme;
  setTheme: (theme: Theme) => void;
  resolvedTheme: 'light' | 'dark';
}

const ThemeContext = createContext<ThemeContextType | undefined>(undefined);

export function ThemeProvider({ children }: { children: React.ReactNode }) {
  const [theme, setTheme] = useState<Theme>('system');
  const [resolvedTheme, setResolvedTheme] = useState<'light' | 'dark'>('light');

  useEffect(() => {
    const root = window.document.documentElement;
    const isDark = theme === 'dark' ||
      (theme === 'system' && window.matchMedia('(prefers-color-scheme: dark)').matches);

    root.classList.toggle('dark', isDark);
    setResolvedTheme(isDark ? 'dark' : 'light');
  }, [theme]);

  return (
    <ThemeContext.Provider value={{ theme, setTheme, resolvedTheme }}>
      {children}
    </ThemeContext.Provider>
  );
}

export const useTheme = () => {
  const context = useContext(ThemeContext);
  if (!context) throw new Error('useTheme must be used within ThemeProvider');
  return context;
};

import { useTheme, Button, Switch } from '@vui/material';
import { Sun, Moon } from 'lucide-react';

export default function ThemeToggle() {
  const { theme, setMode } = useTheme();

  return (
    <div>
      {/* Simple Toggle */}
      <Switch
        checked={theme.mode === 'dark'}
        onChange={() => setMode(theme.mode === 'dark' ? 'light' : 'dark')}
        label="Dark Mode"
      />

      {/* Button Toggle */}
      <Button
        variant="outlined"
        onClick={() => setMode(theme.mode === 'dark' ? 'light' : 'dark')}
      >
        {theme.mode === 'dark' ? <Sun /> : <Moon />}
      </Button>
    </div>
  );
}

<Card className="bg-white dark:bg-neutral-900">
  <CardBody>
    <h3 className="text-neutral-900 dark:text-white">
      This text adapts to theme
    </h3>
    <p className="text-neutral-600 dark:text-neutral-400">
      So does this description
    </p>
  </CardBody>
</Card>