'use strict';
-const Fs = require('fs');
-const Markdown = require('markdown');
-const Mustache = require('mustache');
-const Ncp = require('ncp');
-const Path = require('path');
-const Rimraf = require('rimraf');
-const Util = require('util');
+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),
- fs: {
- access: Util.promisify(Fs.access),
- mkdir: Util.promisify(Fs.mkdir),
- readdir: Util.promisify(Fs.readdir),
- readFile: Util.promisify(Fs.readFile),
- writeFile: Util.promisify(Fs.writeFile)
- },
- ncp: Util.promisify(Ncp.ncp),
- rimraf: Util.promisify(Rimraf),
- debuglog: Util.debuglog('blog'),
+ debuglog: debuglog('blog'),
// constants
- kAssetsDirectoryName: 'assets',
- kIndexName: 'index.html',
kFileNotFoundError: 'ENOENT',
kMarkdownRe: /\.md$/i,
+ kMetadataFilename: 'metadata.json',
// Strings
* updating posts, and handling the publishing.
*
* @class Blog
- * @param {Potluck.tConfiguration} config the initialization options to
+ * @param {Blog.tConfiguration} config the initialization options to
* extend the instance
*/
module.exports = class Blog {
*/
async add(postLocation) {
+ await this._ensurePostsDirectoryExists();
await this._shift();
await this.update(postLocation);
}
*/
async update(postLocation) {
+ const metadata = await this._getMetadata();
+ await this._ensurePostsDirectoryExists();
await this._copyPost(postLocation);
+ await this._writeMetadata(metadata);
+
await this._generate();
}
* @return {Promise<undefined>} empty promise, returns no value
* @instance
*/
- async publish() {
+ publish() {
console.error('Publishing not yet implemented');
+ return Promise.resolve();
}
// Parses markdown for each page, copies assets and generates index.
async _generate() {
- const assetsTarget = Path.join(this.staticDirectory, internals.kAssetsDirectoryName);
- const indexTarget = Path.join(this.staticDirectory, internals.kIndexName);
- const indexLocation = Path.join(this.templatesDirectory, internals.kIndexName);
- const posts = [];
+ 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(`Removing ${assetsTarget}`);
- await internals.rimraf(assetsTarget);
+ internals.debuglog('Reading posts');
+ const posts = [];
for (let i = 0; i < this.maxPosts; ++i) {
- const sourcePath = Path.join(this.postsDirectory, `${i}`);
- const assetsSource = Path.join(sourcePath, internals.kAssetsDirectoryName);
- const postContentPath = await this._findBlogContent(sourcePath);
+ const postSourcePath = join(source, `${i}`);
- internals.debuglog(`Copying ${assetsSource} to ${assetsTarget}`);
- await internals.ncp(assetsSource, assetsTarget);
+ internals.debuglog(`Reading ${postSourcePath} into posts array`);
- internals.debuglog(`Reading ${postContentPath}`);
- const postContent = await internals.fs.readFile(postContentPath, { encoding: 'utf8' });
+ try {
+ await access(postSourcePath);
- internals.debuglog('Parsing markdown');
- posts.push({
- html: Markdown.markdown.toHTML(postContent),
- id: i + 1
- });
- }
+ 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,
+ html: Marked(postContent),
+ raw: postContent
+ });
+ }
+ catch (error) {
+ if (error.code === internals.kFileNotFoundError) {
+ internals.debuglog(`Skipping ${i}`);
+ continue;
+ }
- internals.debuglog(`Reading ${indexLocation}`);
- const indexTemplate = await internals.fs.readFile(indexLocation, { encoding: 'utf8' });
+ throw error;
+ }
+ }
- internals.debuglog('Generating HTML');
- const indexHtml = Mustache.render(indexTemplate, { posts });
- await internals.fs.writeFile(indexTarget, indexHtml);
+ return posts;
}
// Shift the posts, delete any remainder.
async _shift() {
- await this._ensurePostsDirectoryExists();
- for (let i = this.maxPosts - 1; i > 0; --i) {
- const targetPath = Path.join(this.postsDirectory, `${i}`);
- const sourcePath = Path.join(this.postsDirectory, `${i - 1}`);
+ for (let i = this.maxPosts - 1; i >= 0; --i) {
+ const targetPath = join(this.postsDirectory, `${i}`);
+ const sourcePath = join(this.postsDirectory, `${i - 1}`);
try {
- await internals.fs.access(sourcePath);
-
internals.debuglog(`Removing ${targetPath}`);
- await internals.rimraf(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);
}
}
+ // 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) {
- await this._ensurePostsDirectoryExists();
-
- const targetPath = Path.join(this.postsDirectory, '0');
+ const targetPath = join(this.postsDirectory, '0');
internals.debuglog(`Removing ${targetPath}`);
- await internals.rimraf(targetPath);
+ await rmdir(targetPath, { recursive: true });
internals.debuglog(`Adding ${postLocation} to ${targetPath}`);
await internals.ncp(postLocation, targetPath);
internals.debuglog(`Checking if ${this.postsDirectory} exists.`);
try {
- await internals.fs.access(this.postsDirectory);
+ await access(this.postsDirectory);
}
catch (error) {
if (error.code === internals.kFileNotFoundError) {
internals.debuglog('Creating posts directory');
- await internals.fs.mkdir(this.postsDirectory);
+ await mkdir(this.postsDirectory);
return;
}
async _findBlogContent(directory) {
- const entries = await internals.fs.readdir(directory);
+ const entries = await readdir(directory);
const markdownEntries = entries
.filter((entry) => internals.kMarkdownRe.test(entry))
- .map((entry) => Path.join(directory, entry));
+ .map((entry) => join(directory, entry));
if (markdownEntries.length > 0) {
internals.debuglog(`Found markdown file: ${markdownEntries[0]}`);
git.r.bdr.sh / rbdr / blog / blobdiff