feat: exclude scheduled posts and links

feat: automatically deploy scheduled posts or links

scripts/scheduled-publishing.js

@@ -0,0 +1,98 @@
+#!/usr/bin/env node
+
+'use strict'
+
+/**
+ * Scheduled Publishing of posts and links.
+ * This script checks for any blog posts and links that are scheduled to
+ * be published, but are to be published today. If there is at least
+ * one found, a build is trigged in fleek, updating the website
+ * with the latest data.
+ */
+
+const fs = require('fs')
+const path = require('path')
+
+const pMap = require('p-map')
+const matter = require('gray-matter')
+const dayjs = require('dayjs')
+
+const isBetween = require('dayjs/plugin/isBetween')
+dayjs.extend(isBetween)
+
+async function main() {
+  // read files contents concurrently, 10 at a time
+  const contentDir = path.resolve(__dirname, '../src/_blog')
+  const files = await pMap(
+    await fs.promises.readdir(contentDir),
+    (filename) => {
+      if (!filename.endsWith('.md')) {
+        return null
+      }
+
+      return fs.promises.readFile(path.resolve(contentDir, filename), 'utf8')
+    },
+    { concurrency: 10 }
+  )
+
+  const output = files
+    // exclude possible nulls
+    .filter((result) => !!result)
+    // process files into publishable items (posts or links)
+    .reduce((items, fileContent) => {
+      const metadata = matter(fileContent).data
+
+      if (metadata.type && metadata.data) {
+        // links
+        items.push(...metadata.data)
+      } else {
+        items.push(metadata)
+      }
+
+      return items
+    }, [])
+    // check if there is at least one publish date in the future
+    .some((item) => {
+      let publishDate
+
+      // blog post
+      if (item.permalink) {
+        publishDate = item.date
+      }
+
+      // links
+      if (item.url && item.publish_date) {
+        publishDate = item.publish_date
+      }
+
+      if (!publishDate) {
+        return false
+      }
+
+      // we trim to the hour to avoid counting the initial delays on triggering
+      // the job, which could cause the time calculations to exclude specific
+      // scheduled dates and times.
+      const now = dayjs(new Date()).startOf('hour')
+      const timeMatch = dayjs(new Date(publishDate)).isBetween(
+        now.subtract(12, 'hour'),
+        now
+      )
+
+      // using stderr since stdout is used for GH workflow output
+      if (timeMatch) {
+        console.error(`Found post/link to publish: "${item.title}"`)
+      }
+
+      return timeMatch
+    })
+
+  if (!output) {
+    console.error('Nothing found to publish.')
+  }
+
+  // output true or false: should trigger publish or not
+  // GH Workflow step reads from stdout
+  console.log(output)
+}
+
+main()