From 3203a45ad2b6e7fb353f6985d425a65c7998d7a3 Mon Sep 17 00:00:00 2001
From: Marco Lecheler <marco.lecheler@mercedes-benz.com>
Date: Fri, 6 Nov 2026 23:40:13 +0100
Subject: [PATCH] feat(ci): add artifacthub changes to github release notes

---
 .github/workflows/release.yaml | 12 ++++++++++++
 scripts/release-notes.sh       | 35 ++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100755 scripts/release-notes.sh

diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index d765703..82c9e01 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -45,6 +45,18 @@ jobs:
           mark_as_latest: false
           skip_existing: true
 
+      - name: Add changelog to release notes
+        if: steps.cr.outputs.changed_charts != ''
+        env:
+          GH_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+          GH_REPO: "${{ github.repository }}"
+          CHANGED_CHARTS: "${{ steps.cr.outputs.changed_charts }}"
+        run: |
+          IFS=',' read -ra charts <<< "$CHANGED_CHARTS"
+          for chart in "${charts[@]}"; do
+            ./scripts/release-notes.sh "$chart"
+          done
+
       # Mirror main's README onto gh-pages, then inject the chart table from
       # index.yaml into its start/end markers. main is the single source of
       # truth for the static content (title, badges, usage); gh-pages never
diff --git a/scripts/release-notes.sh b/scripts/release-notes.sh
new file mode 100755
index 0000000..b34b4e3
--- /dev/null
+++ b/scripts/release-notes.sh
@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+# Writes the artifacthub.io/changes annotation of a chart as GitHub release notes.
+# Usage: release-notes.sh <chart-dir>   (needs yq, gh, GH_REPO and GITHUB_SHA)
+set -euo pipefail
+
+chart_dir="${1:?usage: release-notes.sh <chart-dir>}"
+chart_file="${chart_dir}/Chart.yaml"
+
+name="$(yq -r '.name' "${chart_file}")"
+version="$(yq -r '.version' "${chart_file}")"
+tag="${name}-${version}"
+
+changes="$(yq -r '.annotations["artifacthub.io/changes"] // ""' "${chart_file}")"
+if [[ -z "${changes}" ]]; then
+  echo "${tag}: no artifacthub.io/changes annotation, leaving release notes untouched"
+  exit 0
+fi
+
+if ! gh release view "${tag}" >/dev/null 2>&1; then
+  echo "${tag}: release does not exist, skipping"
+  exit 0
+fi
+
+entries="$(printf '%s\n' "${changes}" | yq -r '.[] | "- **" + .kind + "**: " + .description')"
+
+pull_requests="$(gh api "repos/${GH_REPO}/commits/${GITHUB_SHA}/pulls" \
+  --jq '.[] | "- #" + (.number | tostring) + " " + .title' 2>/dev/null || true)"
+
+notes="## Changes"$'\n\n'"${entries}"
+if [[ -n "${pull_requests}" ]]; then
+  notes+=$'\n\n'"## Pull requests"$'\n\n'"${pull_requests}"
+fi
+
+gh release edit "${tag}" --notes "${notes}"
+echo "${tag}: release notes updated"