From 633dda9bde71199c1d76056a2bdbdfefc18d342a Mon Sep 17 00:00:00 2001
From: Ahmed AbouZaid <6760103+aabouzaid@users.noreply.github.com>
Date: Tue, 11 Jun 2024 23:46:05 +0200
Subject: [PATCH] chore: update generate-release-notes.sh to work with multi
 version

Signed-off-by: Ahmed AbouZaid <6760103+aabouzaid@users.noreply.github.com>
---
 .tool-versions                    | 14 ++++++------
 scripts/generate-release-notes.sh | 36 +++++++++++++++++++++----------
 2 files changed, 31 insertions(+), 19 deletions(-)

diff --git a/.tool-versions b/.tool-versions
index 441adc5480..52f8b3d5b2 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,11 +1,9 @@
-helm 3.15.1
-# The kubectl version depends on the K8s CI cluster version
-kubectl 1.27.14
-kustomize 5.4.2
+git-chglog 0.15.4
 golang 1.22.4
-# Task is mainly used to run tests locally or in the CI pipeline.
-task 3.30.1
 gomplate v3.11.8
-git-chglog 0.15.4
-yq 4.44.1
+helm 3.15.1
+kubectl 1.27.14 # The kubectl version depends on the K8s CI cluster version
+kustomize 5.4.2
+task 3.30.1 # Task is mainly used to run tests locally or in the CI pipeline.
 yamllint 1.35.1
+yq 4.44.1
diff --git a/scripts/generate-release-notes.sh b/scripts/generate-release-notes.sh
index 3bad44c872..0c12b11891 100644
--- a/scripts/generate-release-notes.sh
+++ b/scripts/generate-release-notes.sh
@@ -2,13 +2,22 @@
 set -euo pipefail
 
 main () {
-    chart_files_to_release="${1:-"charts/*/Chart.yaml"}"
+    chart_files_to_release="${1:-"charts/camunda-platform*/Chart.yaml"}"
 
     for chart_file in ${chart_files_to_release}; do
-        chart_name=$(grep -Po "(?<=^name: ).+" ${chart_file})
-        chart_version=$(grep -Po "(?<=^version: ).+" ${chart_file})
+        chart_path="$(dirname ${chart_file})"
+        chart_name="$(yq '.name' ${chart_file})"
+        chart_version="$(yq '.version' ${chart_file})"
+        chart_version_previous="$(git show main:${chart_file} | yq '.version')"
         chart_tag="${chart_name}-${chart_version}"
-        chart_path="charts/${chart_name}"
+        chart_tag_previous="${chart_name}-${chart_version_previous}"
+
+        #
+        # Early exit if the tag already exists.
+        git tag -l | grep -q "${chart_tag}" && {
+            echo "[WARN] The tag ${chart_tag} already exists, nothing to do...";
+            continue
+        }
 
         #
         # Set Helm CLI version.
@@ -17,11 +26,11 @@ main () {
 
         #
         # Generate RELEASE-NOTES.md file (used for Github release notes and ArtifactHub "changes" annotation).
-        git-chglog                                    \
-            --output "${chart_path}/RELEASE-NOTES.md" \
-            --tag-filter-pattern "${chart_tag%%.*}"   \
-            --next-tag "${chart_tag}"                 \
-            --path "${chart_path}" "${chart_tag}"
+        git-chglog                                      \
+            --output "${chart_path}/RELEASE-NOTES.md"   \
+            --next-tag "${chart_tag}"                   \
+            --path "${chart_path}"                      \
+            "${chart_tag_previous}".."${chart_tag}"
 
         #
         # Update ArtifactHub "changes" annotation in the Chart.yaml file.
@@ -36,6 +45,11 @@ main () {
             ["fix"]=fixed
         )
 
+        # Workaround to rest with empty literal block which is not possible in yq.
+        yq -i '.annotations."artifacthub.io/changes" = ""' "${chart_file}"
+        sed -i 's#artifacthub.io/changes: ""#artifacthub.io/changes: |#g' "${chart_file}"
+
+        # Generate temp file with changes to be merged with the Chart.yaml file.
         artifacthub_changes_tmp="/tmp/changes-for-artifacthub.yaml.tmp"
         echo -e 'annotations:\n  artifacthub.io/changes: |' > "${artifacthub_changes_tmp}"
 
@@ -59,9 +73,9 @@ main () {
         # Merge changes back to the Chart.yaml file.
         # https://mikefarah.gitbook.io/yq/operators/reduce#merge-all-yaml-files-together
         yq eval-all '. as $item ireduce ({}; . * $item )' \
-            ${chart_path}/Chart.yaml "${artifacthub_changes_tmp}" > \
+            "${chart_file}" "${artifacthub_changes_tmp}" > \
             /tmp/Chart-with-artifacthub-changes.yaml.tmp
-        cat /tmp/Chart-with-artifacthub-changes.yaml.tmp > ${chart_path}/Chart.yaml
+        cat /tmp/Chart-with-artifacthub-changes.yaml.tmp > "${chart_file}"
         rm "${artifacthub_changes_tmp}"
     done
 }