portfolio/app/components/ThemeProvider.tsx

"use client";

import { createContext, useContext, useEffect, useState } from "react";

type Theme = "dark" | "light";

const ThemeContext = createContext<{
  theme: Theme;
  toggleTheme: () => void;
}>({
  theme: "dark",
  toggleTheme: () => {},
});

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

export default function ThemeProvider({
  children,
}: {
  children: React.ReactNode;
}) {
  const [theme, setTheme] = useState<Theme>("dark");
  const [mounted, setMounted] = useState(false);

  useEffect(() => {
    const stored =
      (document.documentElement.getAttribute("data-theme") as Theme) || "dark";
    setTheme(stored);
    setMounted(true);
  }, []);

  const toggleTheme = () => {
    const next = theme === "dark" ? "light" : "dark";
    setTheme(next);
    localStorage.setItem("theme", next);
    document.documentElement.setAttribute("data-theme", next);
  };

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