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

/**
 * Auth Check Route Handler
 *
 * Purpose:
 * - Check if user is authenticated (HttpOnly cookie validation)
 * - Prevent browser back button cache issues
 * - Real-time authentication validation
 */
export async function GET(request: NextRequest) {
  try {
    // Get token from HttpOnly cookie
    const token = request.cookies.get('user_token')?.value;

    if (!token) {
      return NextResponse.json(
        { error: 'Not authenticated', authenticated: false },
        { status: 401 }
      );
    }

    // Optional: Verify token with PHP backend
    // (현재는 토큰 존재 여부만 확인, 필요시 PHP API 호출 추가 가능)

    return NextResponse.json(
      { authenticated: true },
      { status: 200 }
    );

  } catch (error) {
    console.error('Auth check error:', error);
    return NextResponse.json(
      { error: 'Internal server error', authenticated: false },
      { status: 500 }
    );
  }
}