middleware.js

import { NextResponse } from "next/server";
import { getToken } from "next-auth/jwt";

export async function middleware(req) {
  const session = await getToken({
    req,
    secret: process.env.NEXTAUTH_SECRET,
    secureCookie: process.env.NODE_ENV === "production",
  });

  const { pathname } = req.nextUrl;

  // Check if the pathname starts with "/dashboard" and the user is not authenticated
  if (pathname.startsWith("/dashboard") && !session) {
    return NextResponse.redirect(new URL("/login-user", req.url));
  }

  // Check if the pathname starts with "/admin-dashboard"
  if (pathname.startsWith("/admin-dashboard")) {
    const user = session?.user;
    // If the user is not authenticated or not an admin, redirect to the dashboard
    if (!user || !user.isAdmin) {
      return NextResponse.redirect(new URL("/dashboard", req.url));
    }
  }

  // Redirect authenticated users from login and landing routes
  if (session) {
    if (
      [
        "/login-user",
        "/admin-login",
        "/",
        "/contact",
        "/about",
        "/price",
      ].includes(pathname)
    ) {
      const user = session.user;
      const redirectUrl = user.isAdmin ? "/admin-dashboard" : "/dashboard";
      return NextResponse.redirect(new URL(redirectUrl, req.url));
    }
  }

  // Check if the user is authenticated
  if (!session) {
    // Redirect unauthenticated users to the login page
    if (["/admin-dashboard", "/dashboard"].includes(pathname)) {
      return NextResponse.redirect(new URL("/login-user", req.url));
    }
    return NextResponse.next();
  }

  // Get the user object from the session
  const user = session.user;

  // Check if the user is an admin
  if (!user.isAdmin) {
    // Redirect non-admin users from admin routes
    if (["/admin-dashboard", "/admin-login"].includes(pathname)) {
      return NextResponse.redirect(new URL("/dashboard", req.url));
    }
    return NextResponse.next();
  }

  // Redirect admin users from non-admin routes
  if (["/login-user", "/dashboard"].includes(pathname)) {
    return NextResponse.redirect(new URL("/admin-dashboard", req.url));
  }

  return NextResponse.next();
}

export const config = {
  matcher: [
    "/admin-dashboard/:path*",
    "/dashboard/:path*",
    "/login-user",
    "/admin-login",
    "/",
    "/contact",
    "/about",
    "/price",
  ],
};