106 lines
3.3 KiB
TypeScript
106 lines
3.3 KiB
TypeScript
import { PostsRootDirectory } from "@/consts/consts";
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import { TFrontmatter } from "@/types/frontmatter.type";
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import { TPostListItem, TPostsByTag } from "@/types/post-list";
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import fs from "fs";
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import { serialize } from "next-mdx-remote/serialize";
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import path from "path";
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import { isEmptyString, nullifyEmptyArray, nullifyEmptyString } from "./utils";
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async function extractFrontmatters(filepath: string): Promise<TFrontmatter> {
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const source = fs.readFileSync(filepath, "utf-8");
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const mdxSource = await serialize(source, {
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parseFrontmatter: true,
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mdxOptions: { format: "md" },
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});
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const frontmatter = mdxSource.frontmatter as TFrontmatter;
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const normalizedTags = frontmatter.tags
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?.filter((tagname) => !isEmptyString(tagname))
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.map((tagname) => tagname.toUpperCase());
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const normalizedResult: TFrontmatter = {
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title: frontmatter.title,
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subtitle: nullifyEmptyString(frontmatter.subtitle),
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coverURL: nullifyEmptyString(frontmatter.coverURL),
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tags: nullifyEmptyArray(normalizedTags),
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summary: nullifyEmptyString(frontmatter.summary),
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time: frontmatter.time,
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pin: frontmatter.pin ?? false,
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noPrompt: frontmatter.noPrompt ?? false,
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allowShare: frontmatter.allowShare ?? true,
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closed: frontmatter.closed ?? false,
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};
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return normalizedResult;
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}
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function readPostsDirectory(): string[] {
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const result: string[] = [];
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fs.readdirSync(PostsRootDirectory).forEach((fileName) => {
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const filePath = path.join(PostsRootDirectory, fileName);
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const fileStat = fs.statSync(filePath);
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if (fileStat.isFile() && fileName.endsWith(".md")) {
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result.push(filePath);
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}
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});
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return result;
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}
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export const getPostFileContent = (postId: string): string | null => {
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const filePath = path.join(PostsRootDirectory, `${postId}.md`);
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if (!fs.existsSync(filePath)) return null;
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const content = fs.readFileSync(filePath, "utf-8");
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return content;
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};
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const sortOutPosts = async (): Promise<{
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allPostList: TPostListItem[];
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pinnedPostList: TPostListItem[];
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postsByTag: TPostsByTag;
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}> => {
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const allPostList: TPostListItem[] = [];
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const pinnedPostList: TPostListItem[] = [];
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const postsByTag: TPostsByTag = {};
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const postFilePaths: string[] = readPostsDirectory();
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for (let i = 0; i < postFilePaths.length; i++) {
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const frontmatter = await extractFrontmatters(postFilePaths[i]);
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const postId = path.parse(postFilePaths[i]).name;
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const currentPostListItem: TPostListItem = {
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id: postId,
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frontMatter: frontmatter,
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};
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if (!currentPostListItem.frontMatter.closed) {
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allPostList.push(currentPostListItem);
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if (currentPostListItem.frontMatter.pin) {
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pinnedPostList.push(currentPostListItem);
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}
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}
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}
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pinnedPostList.sort((a, b) => {
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return a.frontMatter.time > b.frontMatter.time ? -1 : 1;
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});
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allPostList.sort((a, b) => {
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return a.frontMatter.time > b.frontMatter.time ? -1 : 1;
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});
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allPostList.forEach((item) => {
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item.frontMatter.tags?.forEach((tagName) => {
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if (postsByTag[tagName] == null) {
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postsByTag[tagName] = [];
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}
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postsByTag[tagName].push(item);
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});
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});
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return { allPostList: allPostList, postsByTag: postsByTag, pinnedPostList: pinnedPostList };
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};
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export const sortedPosts = await sortOutPosts();
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