git.r.bdr.sh - rbdr/blog/blob - lib/archivers/gemlog.js

   1 const { cp, mkdir, readdir, writeFile } = require('fs/promises');
   2 const { debuglog } = require('util');
   3 const { resolve, join } = require('path');
   4 const { rmIfExists } = require('../utils');
   5
   6 const internals = {
   7   kArchiveName: resolve(join(__dirname, '../..', '.gemlog')),
   8   kIndexName: 'index.gmi',
   9   kGeminiRe: /\.gmi$/i,
  10
  11   debuglog: debuglog('blog'),
  12
  13   buildUrl(id, slug) {
  14     return `./${id}/${slug}`;
  15   },
  16
  17   buildTitle (id, slug) {
  18     const date = new Date(Number(id));
  19     const shortDate = date.toISOString().split('T')[0]
  20     const title = slug.split('-').join(' ');
  21     return `${shortDate} ${title}`
  22   },
  23
  24   buildLink(id, slug) {
  25     return `=> ${internals.buildUrl(id,slug)} ${internals.buildTitle(id,slug)}`;
  26   }
  27 };
  28
  29 module.exports = async function(archiveDirectory) {
  30   internals.debuglog(`Reading archive ${archiveDirectory}`);
  31   const postIds = (await readdir(archiveDirectory))
  32     .sort((a, b) => Number(b) - Number(a));
  33   const posts = [];
  34   for (const id of postIds) {
  35     const postDirectory = join(archiveDirectory, id);
  36     const slug = (await readdir(postDirectory))
  37         .filter((entry) => internals.kGeminiRe.test(entry))[0];
  38
  39       posts.push({ id, slug })
  40   };
  41
  42   internals.debuglog(`Read ${posts.length} posts`);
  43
  44   const index = [
  45     '# Unlimited Pizza Gemlog Archive', '',
  46     '=> https://blog.unlimited.pizza/feed.xml 📰 RSS Feed',
  47     '=> https://blog.unlimited.pizza/index.txt 📑 http text version (latest 3 posts)',
  48     '',
  49     ...posts.map((post) => internals.buildLink(post.id, post.slug)),
  50     '', '=> ../ 🪴 Back to main page'
  51   ].join('\n');
  52
  53   try {
  54     internals.debuglog('Removing index');
  55     await rmIfExists(internals.kArchiveName);
  56   }
  57   finally {
  58     internals.debuglog('Creating index');
  59     await mkdir(internals.kArchiveName);
  60     const indexFile = join(internals.kArchiveName, internals.kIndexName);
  61     await writeFile(indexFile, index);
  62
  63     internals.debuglog('Copying posts to archive');
  64     await cp(archiveDirectory, internals.kArchiveName, { recursive: true });
  65   }
  66 };