Add script to generate JSONFeed

.github/workflows/generate-jsonfeed.yml

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+---
+name: Generate BellSoft Blog Feed
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+  schedule:
+    - cron: "1 0 * * *"
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+jobs:
+  generate-feed:
+    name: Generate JSON Feed
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Setup Pages
+      uses: actions/configure-pages@v4
+    - name: Generate RSS
+      run: ./feed.bash
+    - name: Upload artifact
+      uses: actions/upload-pages-artifact@v2
+    - name: Deploy to GitHub Pages
+      id: deployment
+      uses: actions/deploy-pages@v3

feed.bash

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+#!/usr/bin/env bash
+set -e -u -o pipefail
+
+curl -fsSO 'https://bell-sw.com/page-data/blog/page-data.json'
+mkdir _site
+jq -f filter.jq page-data.json > _site/feed.json

filter.jq

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+.result.pageContext | {
+  "version": "https://jsonfeed.org/version/1.1",
+  "title": .title,
+  "home_page_url": "https://bell-sw.com/",
+  "feed_url": "https://example.org/feed.json",
+  "favicon": "https://bell-sw.com/assets/images/favicon.png",
+  items: [
+    .nodes[] | {
+      "id": .postData.jsonId,
+      "title": .postData.data.title.iv,
+      "summary": .postData.data.seo.iv.description,
+      "image": ("https://bell-sw.com" + .postCover.images.fallback.src),
+      "date_published": .postData.data.publishedAt.iv,
+      "date_modified": .postData.data.updatedAt.iv,
+      "authors": [{
+        "name": .postAuthorsData[].authorData.name.iv,
+        "avatar": ("https://bell-sw.com" + .postAuthorsData[].authorGatsbyImageData.images.fallback.src)
+      }],
+      "tags": .postData.data.category.iv,
+      "url": ("https://bell-sw.com" + .postData.data.relativeUrl.iv)
+    }]
+}