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import useSWR from 'swr';
import { convertWPTopicToTopic, fetchTopic } from '../../../services/graphql';
import type { Maybe, Topic, WPTopic } from '../../../types';
export type UseTopicReturn<T extends Maybe<WPTopic>> = {
isError: boolean;
isLoading: boolean;
isValidating: boolean;
topic: T extends undefined ? Maybe<Topic> : Topic;
};
export const useTopic = <T extends Maybe<WPTopic>>(
slug: string,
fallback?: T
): UseTopicReturn<T> => {
const { data, error, isLoading, isValidating } = useSWR(slug, fetchTopic, {
fallbackData: fallback,
});
if (error) console.error(error);
return {
isError: !!error,
isLoading: isLoading && !data,
isValidating,
topic: data ? convertWPTopicToTopic(data) : undefined,
} as UseTopicReturn<T>;
};
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