init: add project files

src/app/feed.xml/route.ts

@@ -0,0 +1,70 @@
+import assert from 'assert'
+import * as cheerio from 'cheerio'
+import { Feed } from 'feed'
+
+export async function GET(req: Request) {
+  let siteUrl = process.env.NEXT_PUBLIC_SITE_URL
+
+  if (!siteUrl) {
+    throw Error('Missing NEXT_PUBLIC_SITE_URL environment variable')
+  }
+
+  let author = {
+    name: 'Spencer Sharp',
+    email: 'spencer@planetaria.tech',
+  }
+
+  let feed = new Feed({
+    title: author.name,
+    description: 'Your blog description',
+    author,
+    id: siteUrl,
+    link: siteUrl,
+    image: `${siteUrl}/favicon.ico`,
+    favicon: `${siteUrl}/favicon.ico`,
+    copyright: `All rights reserved ${new Date().getFullYear()}`,
+    feedLinks: {
+      rss2: `${siteUrl}/feed.xml`,
+    },
+  })
+
+  let articleIds = require
+    .context('../articles', true, /\/page\.mdx$/)
+    .keys()
+    .filter((key) => key.startsWith('./'))
+    .map((key) => key.slice(2).replace(/\/page\.mdx$/, ''))
+
+  for (let id of articleIds) {
+    let url = String(new URL(`/articles/${id}`, req.url))
+    let html = await (await fetch(url)).text()
+    let $ = cheerio.load(html)
+
+    let publicUrl = `${siteUrl}/articles/${id}`
+    let article = $('article').first()
+    let title = article.find('h1').first().text()
+    let date = article.find('time').first().attr('datetime')
+    let content = article.find('[data-mdx-content]').first().html()
+
+    assert(typeof title === 'string')
+    assert(typeof date === 'string')
+    assert(typeof content === 'string')
+
+    feed.addItem({
+      title,
+      id: publicUrl,
+      link: publicUrl,
+      content,
+      author: [author],
+      contributor: [author],
+      date: new Date(date),
+    })
+  }
+
+  return new Response(feed.rss2(), {
+    status: 200,
+    headers: {
+      'content-type': 'application/xml',
+      'cache-control': 's-maxage=31556952',
+    },
+  })
+}