import type { ApolloError } from '@apollo/client';
import type { GraphQLErrors } from '@apollo/client/errors';

const NOT_FOUND = 'NotFound';

const isApolloGraphQLError = (
  error: ApolloError | Error | undefined
): error is ApolloError => {
  return !!error && !!(error as ApolloError).graphQLErrors;
};

export const isNotFoundGraphQLError = (
  error: Error | ApolloError | undefined,
  path?: string[]
) => {
  return (
    isApolloGraphQLError(error) &&
    hasNotFoundGraphQLErrors(error.graphQLErrors, path)
  );
};

const hasNotFoundGraphQLErrors = (errors: GraphQLErrors, path?: string[]) => {
  return errors.some(
    (e) =>
      e.extensions &&
      e.extensions['type'] === NOT_FOUND &&
      (!path || path.every((item, i) => item === e?.path?.[i]))
  );
};

export const marketDataErrorPolicyGuard = (errors: GraphQLErrors) =>
  errors.every(
    (e) =>
      e.message.match(/no market data for market:/i) ||
      e.message.match(/Conditions list is empty/)
  );