📦 RightNow-AI / RightNow-Tile

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64'use client';

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

type Theme = 'light' | 'dark';

interface ThemeContextType {
  theme: Theme;
  toggleTheme: () => void;
  isDark: boolean;
}

const ThemeContext = createContext<ThemeContextType>({
  theme: 'light',
  toggleTheme: () => {},
  isDark: false,
});

export function ThemeProvider({ children }: { children: ReactNode }) {
  const [theme, setTheme] = useState<Theme>('light');
  const [mounted, setMounted] = useState(false);

  useEffect(() => {
    setMounted(true);
    // Check for saved preference or system preference
    const saved = localStorage.getItem('theme') as Theme | null;
    if (saved) {
      setTheme(saved);
    } else if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
      setTheme('dark');
    }
  }, []);

  useEffect(() => {
    if (mounted) {
      localStorage.setItem('theme', theme);
      document.documentElement.setAttribute('data-theme', theme);
    }
  }, [theme, mounted]);

  const toggleTheme = () => {
    setTheme(prev => prev === 'light' ? 'dark' : 'light');
  };

  // Prevent flash of wrong theme during hydration
  if (!mounted) {
    return (
      <ThemeContext.Provider value={{ theme: 'light', toggleTheme: () => {}, isDark: false }}>
        <div style={{ visibility: 'hidden' }}>{children}</div>
      </ThemeContext.Provider>
    );
  }

  return (
    <ThemeContext.Provider value={{ theme, toggleTheme, isDark: theme === 'dark' }}>
      {children}
    </ThemeContext.Provider>
  );
}

export function useTheme() {
  return useContext(ThemeContext);
}