+++ /dev/null
-'use strict';
-
-const { access, mkdir, readdir, readFile, rmdir, writeFile } = require('fs/promises');
-const { ncp } = require('ncp');
-const { join } = require('path');
-const Marked = require('marked');
-const { debuglog, promisify } = require('util');
-
-const StaticGenerator = require('./generators/static');
-const HTMLGenerator = require('./generators/html');
-const RSSGenerator = require('./generators/rss');
-const TXTGenerator = require('./generators/txt');
-
-const internals = {
-
- // Promisified functions
- ncp: promisify(ncp),
-
- debuglog: debuglog('blog'),
-
- // constants
-
- kFileNotFoundError: 'ENOENT',
- kMarkdownRe: /\.md$/i,
- kMetadataFilename: 'metadata.json',
-
- // Strings
-
- strings: {
- markdownNotFound: 'Markdown file was not found in blog directory. Please update.'
- }
-};
-
-/**
- * The Blog class is the blog generator, it's in charge of adding and
- * updating posts, and handling the publishing.
- *
- * @class Blog
- * @param {Blog.tConfiguration} config the initialization options to
- * extend the instance
- */
-module.exports = class Blog {
-
- constructor(config) {
-
- Object.assign(this, config);
- }
-
- /**
- * Shifts the blog posts, adds the passed path to slot 0, and
- * generates files.
- *
- * @function add
- * @memberof Blog
- * @param {string} postLocation the path to the directory containing
- * the post structure
- * @return {Promise<undefined>} empty promise, returns no value
- * @instance
- */
- async add(postLocation) {
-
- await this._ensurePostsDirectoryExists();
- await this._shift();
- await this.update(postLocation);
- }
-
- /**
- * Adds the passed path to slot 0, and generates files.
- *
- * @function update
- * @memberof Blog
- * @param {string} postLocation the path to the directory containing
- * the post structure
- * @return {Promise<undefined>} empty promise, returns no value
- * @instance
- */
- async update(postLocation) {
-
- const metadata = await this._getMetadata();
- await this._ensurePostsDirectoryExists();
- await this._copyPost(postLocation);
- await this._writeMetadata(metadata);
-
- await this.generate();
- }
-
- /**
- * Publishes the files to a static host.
- *
- * @function publish
- * @memberof Blog
- * @return {Promise<undefined>} empty promise, returns no value
- * @instance
- */
- publish() {
-
- console.error('Publishing not yet implemented');
- return Promise.resolve();
- }
-
- // Parses markdown for each page, copies assets and generates index.
-
- async generate() {
-
- internals.debuglog('Generating output');
-
- const posts = await this._readPosts(this.postsDirectory);
-
- await StaticGenerator(this.postsDirectory, this.staticDirectory, posts);
- await HTMLGenerator(this.templatesDirectory, this.staticDirectory, posts);
- await RSSGenerator(this.templatesDirectory, this.staticDirectory, posts);
- await TXTGenerator(this.templatesDirectory, this.staticDirectory, posts);
- }
-
- // Reads the posts into an array
-
- async _readPosts(source) {
-
- internals.debuglog('Reading posts');
- const posts = [];
-
- for (let i = 0; i < this.maxPosts; ++i) {
- const postSourcePath = join(source, `${i}`);
-
- internals.debuglog(`Reading ${postSourcePath} into posts array`);
-
- try {
- await access(postSourcePath);
-
- const metadata = await this._getMetadata(i);
-
- const postContentPath = await this._findBlogContent(postSourcePath);
- internals.debuglog(`Reading ${postContentPath}`);
- const postContent = await readFile(postContentPath, { encoding: 'utf8' });
-
- internals.debuglog('Parsing markdown');
- posts.push({
- ...metadata,
- index: i,
- html: Marked(postContent),
- raw: postContent
- });
- }
- catch (error) {
- if (error.code === internals.kFileNotFoundError) {
- internals.debuglog(`Skipping ${i}`);
- continue;
- }
-
- throw error;
- }
- }
-
- return posts;
- }
-
- // Shift the posts, delete any remainder.
-
- async _shift() {
-
-
- for (let i = this.maxPosts - 1; i >= 0; --i) {
- const targetPath = join(this.postsDirectory, `${i}`);
- const sourcePath = join(this.postsDirectory, `${i - 1}`);
-
- try {
- internals.debuglog(`Removing ${targetPath}`);
- await rmdir(targetPath, { recursive: true });
-
- await access(sourcePath); // check the source path
-
- internals.debuglog(`Shifting blog post ${sourcePath} to ${targetPath}`);
- await internals.ncp(sourcePath, targetPath);
- }
- catch (error) {
- if (error.code === internals.kFileNotFoundError) {
- internals.debuglog(`Skipping ${sourcePath}: Does not exist.`);
- continue;
- }
-
- throw error;
- }
- }
- }
-
- // Attempts to read existing metadata. Otherwise generates new set.
-
- async _getMetadata(index = 0) {
-
- const metadataTarget = join(this.postsDirectory, String(index), internals.kMetadataFilename);
-
- try {
- internals.debuglog(`Looking for metadata at ${metadataTarget}`);
- return JSON.parse(await readFile(metadataTarget, { encoding: 'utf8' }));
- }
- catch (e) {
- internals.debuglog(`Metadata not found or unreadable. Generating new set.`);
- const createdOn = Date.now();
- const metadata = {
- id: String(createdOn),
- createdOn
- };
-
- return metadata;
- }
- }
-
- // Writes metadata. Assumes post 0 since it only gets written
- // on create
-
- async _writeMetadata(metadata) {
-
- const metadataTarget = join(this.postsDirectory, '0', internals.kMetadataFilename);
- internals.debuglog(`Writing ${metadataTarget}`);
- await writeFile(metadataTarget, JSON.stringify(metadata, null, 2));
- }
-
- // Copies a post directory to the latest slot.
-
- async _copyPost(postLocation) {
-
- const targetPath = join(this.postsDirectory, '0');
-
- internals.debuglog(`Removing ${targetPath}`);
- await rmdir(targetPath, { recursive: true });
-
- internals.debuglog(`Adding ${postLocation} to ${targetPath}`);
- await internals.ncp(postLocation, targetPath);
- }
-
- // Ensures the posts directory exists.
-
- async _ensurePostsDirectoryExists() {
-
- internals.debuglog(`Checking if ${this.postsDirectory} exists.`);
- try {
- await access(this.postsDirectory);
- }
- catch (error) {
- if (error.code === internals.kFileNotFoundError) {
- internals.debuglog('Creating posts directory');
- await mkdir(this.postsDirectory);
- return;
- }
-
- throw error;
- }
- }
-
- // Looks for a `.md` file in the blog directory, and returns the path
-
- async _findBlogContent(directory) {
-
- const entries = await readdir(directory);
-
- const markdownEntries = entries
- .filter((entry) => internals.kMarkdownRe.test(entry))
- .map((entry) => join(directory, entry));
-
- if (markdownEntries.length > 0) {
- internals.debuglog(`Found markdown file: ${markdownEntries[0]}`);
- return markdownEntries[0];
- }
-
- throw new Error(internals.strings.markdownNotFound);
- }
-};
git.r.bdr.sh / rbdr / blog / blobdiff