import { NextResponse } from "next/server";
import { jwtVerify } from "jose";

const SECRET = new TextEncoder().encode(
  process.env.JWT_SECRET || "9router-default-secret-change-me"
);

export async function middleware(request) {
  const { pathname } = request.nextUrl;

  // Protect all dashboard routes
  if (pathname.startsWith("/dashboard")) {
    const token = request.cookies.get("auth_token")?.value;

    if (!token) {
      return NextResponse.redirect(new URL("/login", request.url));
    }

    try {
      await jwtVerify(token, SECRET);
      return NextResponse.next();
    } catch (err) {
      return NextResponse.redirect(new URL("/login", request.url));
    }
  }

  // Redirect / to /dashboard if logged in, or /dashboard if it's the root
  if (pathname === "/") {
    return NextResponse.redirect(new URL("/dashboard", request.url));
  }

  return NextResponse.next();
}

export const config = {
  matcher: ["/", "/dashboard/:path*"],
};