From d429ea31f279fe9d02d5feb416eba859d1d1c76e Mon Sep 17 00:00:00 2001
From: Jochen Schalanda <jochen@schalanda.name>
Date: Wed, 20 Dec 2023 18:45:22 +0100
Subject: [PATCH] Add script to generate JSONFeed

---
 .github/workflows/generate-jsonfeed.yml | 35 +++++++++++++++++++++++++
 feed.bash                               |  6 +++++
 filter.jq                               | 22 ++++++++++++++++
 3 files changed, 63 insertions(+)
 create mode 100644 .github/workflows/generate-jsonfeed.yml
 create mode 100755 feed.bash
 create mode 100644 filter.jq

diff --git a/.github/workflows/generate-jsonfeed.yml b/.github/workflows/generate-jsonfeed.yml
new file mode 100644
index 0000000..9ca781a
--- /dev/null
+++ b/.github/workflows/generate-jsonfeed.yml
@@ -0,0 +1,35 @@
+---
+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
diff --git a/feed.bash b/feed.bash
new file mode 100755
index 0000000..1269c4e
--- /dev/null
+++ b/feed.bash
@@ -0,0 +1,6 @@
+#!/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
diff --git a/filter.jq b/filter.jq
new file mode 100644
index 0000000..c603a44
--- /dev/null
+++ b/filter.jq
@@ -0,0 +1,22 @@
+.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)
+    }]
+}