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

   1 const { mkdir, readdir, rm, writeFile } = require('fs/promises');
   2 const { debuglog, promisify } = require('util');
   3 const { ncp } = require('ncp');
   4 const { resolve, join } = require('path');
   5
   6 const internals = {
   7   kArchiveName: resolve(join(__dirname, '../..', '.gemlog')),
   8   kIndexName: 'index.gmi',
   9   kGeminiRe: /\.gmi$/i,
  10
  11   ncp: promisify(ncp),
  12   debuglog: debuglog('blog'),
  13
  14   buildUrl(id, slug) {
  15     return `./${id}/${slug}`;
  16   },
  17
  18   buildTitle (id, slug) {
  19     const date = new Date(Number(id));
  20     const shortDate = date.toISOString().split('T')[0]
  21     const title = slug.split('-').join(' ');
  22     return `${shortDate} ${title}`
  23   },
  24
  25   buildLink(id, slug) {
  26     return `=> ${internals.buildUrl(id,slug)} ${internals.buildTitle(id,slug)}`;
  27   }
  28 };
  29
  30 module.exports = async function(archiveDirectory) {
  31   internals.debuglog(`Reading archive ${archiveDirectory}`);
  32   const postIds = (await readdir(archiveDirectory))
  33     .sort((a, b) => Number(b) - Number(a));
  34   const posts = [];
  35   for (const id of postIds) {
  36     const postDirectory = join(archiveDirectory, id);
  37     const slug = (await readdir(postDirectory))
  38         .filter((entry) => internals.kGeminiRe.test(entry))[0];
  39
  40       posts.push({ id, slug })
  41   };
  42
  43   internals.debuglog(`Read ${posts.length} posts`);
  44
  45   const index = [
  46     '# Unlimited Pizza Gemlog Archive', '',
  47     '=> https://blog.unlimited.pizza/feed.xml 📰 RSS Feed',
  48     '=> https://blog.unlimited.pizza/index.txt 📑 http text version (latest 3 posts)',
  49     '',
  50     ...posts.map((post) => internals.buildLink(post.id, post.slug)),
  51     '', '=> ../ 🪴 Back to main page'
  52   ].join('\n');
  53
  54   try {
  55     internals.debuglog('Removing index');
  56     await rm(internals.kArchiveName, { recursive: true });
  57   }
  58   finally {
  59     internals.debuglog('Creating index');
  60     await mkdir(internals.kArchiveName);
  61     const indexFile = join(internals.kArchiveName, internals.kIndexName);
  62     await writeFile(indexFile, index);
  63
  64     internals.debuglog('Copying posts to archive');
  65     await internals.ncp(archiveDirectory, internals.kArchiveName);
  66   }
  67 };