import { RenderErrorPage } from 'vite-plugin-ssr/RenderErrorPage';
import { fetchShelf } from '../../src/shelves';
import { fetchPost } from '../../src/posts';
import { fetchPostComments } from '../../src/comments';

async function getPageData(pageContext) {
	const [shelf, post, comments] = await Promise.all([
		fetchShelf(pageContext.routeParams.id),
		fetchPost(pageContext.routeParams.postId),
		fetchPostComments(pageContext.routeParams.postId),
	]);

	if (!shelf) {
		throw RenderErrorPage({
			pageContext: {
				pageProps: {
					errorInfo: 'This shelf does not exist',
				},
			},
		});
	}

	if (!post) {
		throw RenderErrorPage({
			pageContext: {
				pageProps: {
					errorInfo: 'This post does not exist',
				},
			},
		});
	}

	return {
		shelf,
		post,
		comments,
	};
}

export { getPageData };