65 lines
1.7 KiB
TypeScript
65 lines
1.7 KiB
TypeScript
import fs from "fs/promises";
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import path from "path";
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import matter from "gray-matter";
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import { serialize } from "next-mdx-remote/serialize";
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const BASE_PATH = "content";
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const ORDER_FILE = "ORDER.json";
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export async function getSectionNamesForPage(page: string) {
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const sectionDir = path.join(BASE_PATH, page);
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return (await fs.readdir(sectionDir))
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.filter((name) => name.endsWith(".md"))
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.map((name) => name.slice(0, -".md".length));
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}
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export async function getSectionsForPage(page: string) {
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const names = await getSectionNamesForPage(page);
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const order = await getSectionOrder(page);
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if (!isEquivalent(new Set(names), new Set(order))) {
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throw new Error(
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`${ORDER_FILE} must contain all sections defined for page ${page}`
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);
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}
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const sections = names
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.sort((a, b) => order.indexOf(a) - order.indexOf(b))
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.map(async (name) => ({
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name,
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data: await getSectionForPage(page, name),
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}));
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return await Promise.all(sections);
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}
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async function getSectionForPage(page: string, section: string) {
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const raw = await fs.readFile(
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path.join(BASE_PATH, page, `${section}.md`),
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"utf-8"
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);
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const { content, data } = matter(raw);
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return {
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content: await serialize(content),
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title: data.title as string,
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};
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}
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async function getSectionOrder(page: string) {
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const raw = await fs.readFile(
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path.join(BASE_PATH, page, ORDER_FILE),
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"utf-8"
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);
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return JSON.parse(raw) as string[];
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}
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function isEquivalent<T>(setA: Set<T>, setB: Set<T>): boolean {
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const aContainsB = [...setB].every((b) => setA.has(b));
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const bContainsA = [...setA].every((a) => setB.has(a));
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return aContainsB && bContainsA;
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}
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