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geradoresfe/src/context/ThemeContext.tsx

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+"use client";
+
+import type React from "react";
+import { createContext, useState, useContext, useEffect } from "react";
+
+type Theme = "light" | "dark";
+
+type ThemeContextType = {
+  theme: Theme;
+  toggleTheme: () => void;
+};
+
+const ThemeContext = createContext<ThemeContextType | undefined>(undefined);
+
+export const ThemeProvider: React.FC<{ children: React.ReactNode }> = ({
+  children,
+}) => {
+  const [theme, setTheme] = useState<Theme>("light");
+  const [isInitialized, setIsInitialized] = useState(false);
+
+  useEffect(() => {
+    // This code will only run on the client side
+    const savedTheme = localStorage.getItem("theme") as Theme | null;
+    const initialTheme = savedTheme || "light"; // Default to light theme
+
+    setTheme(initialTheme);
+    setIsInitialized(true);
+  }, []);
+
+  useEffect(() => {
+    if (isInitialized) {
+      localStorage.setItem("theme", theme);
+      if (theme === "dark") {
+        document.documentElement.classList.add("dark");
+      } else {
+        document.documentElement.classList.remove("dark");
+      }
+    }
+  }, [theme, isInitialized]);
+
+  const toggleTheme = () => {
+    setTheme((prevTheme) => (prevTheme === "light" ? "dark" : "light"));
+  };
+
+  return (
+    <ThemeContext.Provider value={{ theme, 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;
+};