const fs = require('fs') const posts_dir = 'posts/' const routes = new Map(); if (!fs.existsSync(posts_dir)) throw Error(`Missing ${posts_dir}`) let posts = readPosts(); setInterval(() => posts = readPosts(), 1000 * 60 * 60) function readPosts() { console.warn("reading all posts") const files = fs.readdirSync(posts_dir) if (files.length === 0) throw Error(`Could not find posts in ${posts_dir}`) return files.filter(file_name => file_name.endsWith('.json')) .map(file_name => `${posts_dir}${file_name}`) .map(readJSONAsObject) } function readJSONAsObject(filename) { return JSON.parse(fs.readFileSync(filename, 'utf8')) } function notFoundResponse(res) { res.status(404).send('Sorry, can not find that') } routes.set('', async (req, res) => { if (req.query.sort === '-1' || req.query.sort === '1') { const posts_sorted = posts.sort((a, b) => { return new Date(a.date).getTime() - new Date(b.date).getTime() }) if (req.query.sort === '1') res.send(posts_sorted) else res.send(posts_sorted.reverse()) return } // Default response when there are no interesting queries res.send(posts) }) routes.set('/:id', async (req, res) => { const re = /[0-9A-Fa-f]{24}/g if (!re.test(req.params.id)) { notFoundResponse(res) return } const results = posts.filter(post => post._id === req.params.id) if (!results.length) notFoundResponse(res) else res.send(results[0]) }) // Dynamic RSS feed routes.set('/rss.xml', async (req, res) => { const re = /(\/api\/)?(.*)\/rss/g const result = [...req.raw.originalUrl.matchAll(re)] if (!result) { notFoundResponse(res) return } const endpoint = result [1] ? result[1][2] : result[0][2] // Assumes https const BASE_URL = 'https://' + req.raw.hostname + endpoint const ITEMS = posts.map(post => `\r\n ${post.title} https://${req.raw.hostname}/posts?post=${post._id} https://${req.raw.hostname}/posts?post=${post._id} ${post.content} ` ).join("\n") const xml = `\n Posts https://${req.raw.hostname} Personal blog en-us ${ITEMS} \n` res.header('Content-Type', 'application/xml') res.status(200).send(xml) }) module.exports = routes