lib/ThemeContext.tsx

'use client';

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

type Theme = 'obsidian' | 'classic' | 'soft-gray' | 'warm-linen' | 'midnight' | 'cyberpunk' | 'atlantic' | 'slate' | 'crimson' | 'sapphire' | 'mint' | 'orange' | 'rose';

interface ThemeContextType {
    theme: Theme;
    setTheme: (theme: Theme) => void;
}

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

export function ThemeProvider({ children }: { children: React.ReactNode }) {
    const [theme, setThemeState] = useState<Theme>('obsidian');

    useEffect(() => {
        const savedTheme = localStorage.getItem('app-theme') as Theme;
        if (savedTheme) {
            setThemeState(savedTheme);
            document.documentElement.setAttribute('data-theme', savedTheme);
        } else {
            // Default to obsidian if no theme saved
            document.documentElement.setAttribute('data-theme', 'obsidian');
        }
    }, []);

    const setTheme = (newTheme: Theme) => {
        setThemeState(newTheme);
        localStorage.setItem('app-theme', newTheme);
        document.documentElement.setAttribute('data-theme', newTheme);
    };

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

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