/api/auth/session (dashboard)

export async function GET(request: NextRequest): Promise<NextResponse> {
  // Rate limit: 60 session checks per minute per IP
  const clientIp = getClientIp(request);
  if (!checkRateLimit(clientIp, 'session')) {
    return NextResponse.json(
      { error: 'rate_limited', error_description: 'Too many requests. Please try again later.' },
      { status: 429 }
    );
  }

  const cookieStore = await cookies();
  const accessToken = cookieStore.get('l1fe_access_token')?.value;

  if (!accessToken) {
    return NextResponse.json({ authenticated: false }, { status: 401 });
  }

  // Fetch user info from Auth v4's userinfo endpoint (server-to-server)
  try {
    const userInfoResponse = await fetch(`${SSO_URL}/v4/oauth/userinfo`, {
      headers: { Authorization: `Bearer ${accessToken}` },
    });

    if (!userInfoResponse.ok) {
      // Token is invalid or expired — clear cookies
      const response = NextResponse.json(
        { authenticated: false, reason: 'token_invalid' },
        { status: 401 }
      );
      response.cookies.delete('l1fe_access_token');
      response.cookies.delete('l1fe_refresh_token');
      response.cookies.delete('l1fe_id_token');
      return response;
    }

    const userInfo = await userInfoResponse.json();

    return NextResponse.json({
      authenticated: true,
      user: {
        id: userInfo.sub,
        email: userInfo.email,
        name: userInfo.name,
        picture: userInfo.picture,
        emailVerified: userInfo.email_verified,
      },
      // Expose only non-sensitive session metadata to the client
      expiresAt: cookieStore.get('l1fe_expires_at')?.value || null,
    });
  } catch (err) {
    console.error('Session check failed:', err);
    return NextResponse.json(
      { authenticated: false, reason: 'session_check_failed' },
      { status: 500 }
    );
  }
}

NextResponse.json(
      { error: 'rate_limited', error_description: 'Too many requests. Please try again later.' },
      { status: 429 }
    )

NextResponse.json({ authenticated: false }, { status: 401 })

NextResponse.json(
        { authenticated: false, reason: 'token_invalid' },
        { status: 401 }
      )

userInfoResponse.json()

NextResponse.json({
      authenticated: true,
      user: {
        id: userInfo.sub,
        email: userInfo.email,
        name: userInfo.name,
        picture: userInfo.picture,
        emailVerified: userInfo.email_verified,
      },
      // Expose only non-sensitive session metadata to the client
      expiresAt: cookieStore.get('l1fe_expires_at')?.value || null,
    })

NextResponse.json(
      { authenticated: false, reason: 'session_check_failed' },
      { status: 500 }
    )