import { NextResponse } from 'next/server';
import type { NextRequest } from 'next/server';

export function middleware(request: NextRequest) {
  const { pathname } = request.nextUrl;
  const adminSession = request.cookies.get('admin_session');

  // Allow requests to /login and static assets
  if (
    pathname.startsWith('/login') ||
    pathname.startsWith('/_next') ||
    pathname.startsWith('/api') ||
    pathname === '/favicon.ico'
  ) {
    // If already logged in and trying to access login page, redirect to home
    if (pathname.startsWith('/login') && adminSession) {
      return NextResponse.redirect(new URL('/', request.url));
    }
    return NextResponse.next();
  }

  // Redirect to /login if no session exists
  if (!adminSession) {
    return NextResponse.redirect(new URL('/login', request.url));
  }

  return NextResponse.next();
}

export const config = {
  matcher: ['/((?!api|_next/static|_next/image|favicon.ico).*)'],
};