middleware.ts

import { createServerClient } from '@supabase/ssr';
import { NextResponse } from 'next/server';
import type { NextRequest } from 'next/server';

export async function middleware(req: NextRequest) {
  const res = NextResponse.next();
  
  const supabase = createServerClient(
    process.env.NEXT_PUBLIC_SUPABASE_URL!,
    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
    {
      cookies: {
        get(name: string) {
          return req.cookies.get(name)?.value;
        },
        set(name: string, value: string, options: any) {
          res.cookies.set({
            name,
            value,
            ...options,
          });
        },
        remove(name: string, options: any) {
          res.cookies.set({
            name,
            value: '',
            ...options,
          });
        },
      },
    }
  );

  const {
    data: { user },
  } = await supabase.auth.getUser();

  // Protect admin routes
  if (req.nextUrl.pathname.startsWith('/admin')) {
    if (!user) {
      return NextResponse.redirect(new URL('/auth/login', req.url));
    }

    // Check if user is admin (simple email check)
    if (user.email !== '24cs058@charusat.edu.in') {
      return NextResponse.redirect(new URL('/dashboard', req.url));
    }
  }

  return res;
}

export const config = {
  matcher: [
    /*
     * Match all request paths except for the ones starting with:
     * - _next/static (static files)
     * - _next/image (image optimization files)
     * - favicon.ico (favicon file)
     * - public folder
     */
    '/((?!_next/static|_next/image|favicon.ico|public).*)',
  ],
};