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

const ThemeContext = createContext();

// Light theme only — the site no longer supports a dark mode.
export const ThemeProvider = ({ children }) => {
  useEffect(() => {
    const root = window.document.documentElement;
    root.classList.remove('dark');
    root.classList.add('light');
    // Clear any previously persisted dark preference.
    localStorage.removeItem('theme-preference');
  }, []);

  // Kept for backward compatibility with consumers that still call useTheme.
  // toggleTheme is a no-op now.
  return (
    <ThemeContext.Provider value={{ theme: 'light', toggleTheme: () => {} }}>
      {children}
    </ThemeContext.Provider>
  );
};

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