109 lines
2.8 KiB
TypeScript
109 lines
2.8 KiB
TypeScript
import fs from "fs/promises";
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import path from "path";
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import { parse } from "date-fns";
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import matter from "gray-matter";
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import { MDXRemoteSerializeResult } from "next-mdx-remote";
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import { serialize } from "next-mdx-remote/serialize";
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import { isTerm, Term, TERMS } from "@/utils";
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import { DATE_FORMAT, getLocalDateFromEST } from "./events";
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export const NEWS_PATH = path.join("content", "news");
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export interface Metadata {
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author: string;
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date: string;
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}
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export interface News {
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content: MDXRemoteSerializeResult;
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metadata: Metadata;
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}
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export async function getNewsYears(): Promise<string[]> {
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return (await fs.readdir(NEWS_PATH, { withFileTypes: true }))
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.filter((dirent) => dirent.isDirectory())
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.map((dirent) => dirent.name)
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.sort();
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}
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export async function getNewsTermsByYear(year: string): Promise<Term[]> {
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return (
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await fs.readdir(path.join(NEWS_PATH, year), {
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withFileTypes: true,
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})
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)
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.filter((dirent) => dirent.isDirectory() && isTerm(dirent.name))
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.map((dirent) => dirent.name as Term)
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.sort((a, b) => TERMS.indexOf(a) - TERMS.indexOf(b));
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}
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export async function getNewsByTerm(
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year: string,
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term: Term
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): Promise<string[]> {
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return (
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await fs.readdir(path.join(NEWS_PATH, year, term), {
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withFileTypes: true,
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})
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)
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.filter((dirent) => dirent.isFile() && dirent.name.endsWith(".md"))
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.map((dirent) => dirent.name.slice(0, -".md".length));
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}
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export async function getNewsBySlug(
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year: string,
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term: Term,
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slug: string
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): Promise<News> {
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const raw = await fs.readFile(
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path.join(NEWS_PATH, year, term, `${slug}.md`),
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"utf-8"
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);
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const { content, data: metadata } = matter(raw);
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return {
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content: await serialize(content),
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metadata: {
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...metadata,
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date: getLocalDateFromEST(
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parse(metadata.date, DATE_FORMAT, new Date())
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).toString(),
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} as Metadata,
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};
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}
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export async function getRecentNews(): Promise<News[]> {
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const today = new Date();
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const currentYear = today.getFullYear();
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const currentTerm = Math.trunc(today.getMonth() / 4);
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const prevYear = currentTerm > 0 ? currentYear : currentYear - 1;
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const prevTerm = (currentTerm - 1 + 3) % 3;
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const news: News[] = (
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await Promise.all(
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[
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{ year: currentYear.toString(), term: currentTerm },
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{ year: prevYear.toString(), term: prevTerm },
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].map(async ({ year, term }) => {
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try {
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const newsInTerm = await getNewsByTerm(year, TERMS[term]);
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return await Promise.all(
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newsInTerm.map((slug) => getNewsBySlug(year, TERMS[term], slug))
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);
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} catch (error) {
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return [];
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}
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})
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)
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).flat();
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return news.sort((a, b) => {
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return (
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new Date(b.metadata.date).getTime() - new Date(a.metadata.date).getTime()
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);
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});
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}
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