import axios from 'axios';

export function isUnauthorizedError(error: unknown) {
  return axios.isAxiosError(error) && error.response?.status === 401;
}

export function extractErrorMessage(error: unknown, fallback: string) {
  if (axios.isAxiosError(error)) {
    const apiMessage =
      typeof error.response?.data === 'object' && error.response?.data && 'message' in error.response.data
        ? error.response.data.message
        : undefined;

    if (Array.isArray(apiMessage)) {
      return apiMessage.join(', ');
    }

    if (typeof apiMessage === 'string' && apiMessage.trim()) {
      return apiMessage;
    }
  }

  if (error instanceof Error && error.message.trim()) {
    return error.message;
  }

  return fallback;
}