From dff777e6de9e9af98ef7c211385686c567c471e5 Mon Sep 17 00:00:00 2001
From: Markus Pesch <markus.pesch@cryptic.systems>
Date: Tue, 3 Jun 2025 20:02:15 +0200
Subject: [PATCH] feat: support Artifacthub annotations

---
 .gitea/scripts/add-annotations.sh | 103 ++++++++++++++++++++++++++++++
 .gitea/workflows/release.yaml     |  15 +++--
 Chart.yaml                        |   6 ++
 3 files changed, 120 insertions(+), 4 deletions(-)
 create mode 100755 .gitea/scripts/add-annotations.sh

diff --git a/.gitea/scripts/add-annotations.sh b/.gitea/scripts/add-annotations.sh
new file mode 100755
index 0000000..af3c261
--- /dev/null
+++ b/.gitea/scripts/add-annotations.sh
@@ -0,0 +1,103 @@
+#!/bin/bash
+
+set -e
+
+CHART_FILE="Chart.yaml"
+if [ ! -f "${CHART_FILE}" ]; then
+  echo "ERROR: ${CHART_FILE} not found!"
+  exit 1
+fi
+
+
+DEFAULT_NEW_TAG="$(git describe --abbrev=0)"
+DEFAULT_OLD_TAG="$(git describe --abbrev=0 --tags "$(git rev-list --tags --skip=1 --max-count=1)")"
+
+if [ -z "${1}" ]; then
+  read -p "Enter start tag [${DEFAULT_OLD_TAG}]: " OLD_TAG
+  if [ -z "${OLD_TAG}" ]; then
+    OLD_TAG="${DEFAULT_OLD_TAG}"
+  fi
+
+  while [ -z "$(git tag --list "${OLD_TAG}")" ]; do
+    echo "ERROR: Tag '${OLD_TAG}' not found!"
+    read -p "Enter start tag [${DEFAULT_OLD_TAG}]: " OLD_TAG
+    if [ -z "${OLD_TAG}" ]; then
+      OLD_TAG="${DEFAULT_OLD_TAG}"
+    fi
+  done
+else
+  OLD_TAG=${1}
+  if [ -z "$(git tag --list "${OLD_TAG}")" ]; then
+    echo "ERROR: Tag '${OLD_TAG}' not found!"
+    exit 1
+  fi
+fi
+
+if [ -z "${1}" ]; then
+  read -p "Enter end tag [${DEFAULT_NEW_TAG}]: " NEW_TAG
+  if [ -z "${NEW_TAG}" ]; then
+    NEW_TAG="${DEFAULT_NEW_TAG}"
+  fi
+
+  while [ -z "$(git tag --list "${NEW_TAG}")" ]; do
+    echo "ERROR: Tag '${NEW_TAG}' not found!"
+    read -p "Enter end tag [${DEFAULT_NEW_TAG}]: " NEW_TAG
+    if [ -z "${NEW_TAG}" ]; then
+      NEW_TAG="${DEFAULT_NEW_TAG}"
+    fi
+  done
+else
+  NEW_TAG=${1}
+
+  if [ -z "$(git tag --list "${NEW_TAG}")" ]; then
+    echo "ERROR: Tag '${NEW_TAG}' not found!"
+    exit 1
+  fi
+fi
+
+YAML_FILE=$(mktemp)
+
+function map_type_to_kind() {
+  case "${1}" in
+    feat)
+      echo "added"
+    ;;
+    fix)
+      echo "fixed"
+    ;;
+    chore|style|test|ci|docs|refac)
+      echo "changed"
+    ;;
+    revert)
+      echo "removed"
+    ;;
+    sec)
+      echo "security"
+    ;;
+    *)
+      echo "skip"
+    ;;
+  esac
+}
+
+COMMIT_TITLES=$(git log "${OLD_TAG}..${NEW_TAG}" --pretty=format:"%s")
+
+while IFS= read -r line; do
+  if [[ "${line}" =~ ^([a-zA-Z]+)(\([^\)]+\))?\:\ (.+)$ ]]; then
+    TYPE="${BASH_REMATCH[1]}"
+
+    if [ "${TYPE}" == "skip" ]; then
+      continue
+    fi
+
+    DESC="${BASH_REMATCH[3]}"
+    KIND=$(map_type_to_kind "${TYPE}")
+
+    yq --inplace ". += [ {\"kind\": \"${KIND}\", \"description\": \"${DESC}\"}]" "${YAML_FILE}"
+  fi
+done <<< "${COMMIT_TITLES}"
+
+yq --no-colors --inplace ".annotations.\"artifacthub.io/changes\" |= loadstr(\"${YAML_FILE}\") | sort_keys(.)" "${CHART_FILE}"
+yq --no-colors --inplace ".version = \"${NEW_TAG}\"" "${CHART_FILE}"
+
+rm "${YAML_FILE}"
\ No newline at end of file
diff --git a/.gitea/workflows/release.yaml b/.gitea/workflows/release.yaml
index 556c0c7..5d70917 100644
--- a/.gitea/workflows/release.yaml
+++ b/.gitea/workflows/release.yaml
@@ -14,12 +14,19 @@ jobs:
       - name: Install tooling
         run: |
           apk update
-          apk add git npm
+          apk add git npm yq
       - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Add Artifacthub.io annotations
+        run: |
+          NEW_TAG="$(git describe --abbrev=0)"
+          OLD_TAG="$(git describe --abbrev=0 --tags "$(git rev-list --tags --skip=1 --max-count=1)")"
+          .gitea/scripts/add-annotations.sh "${NEW_TAG}" "${OLD_TAG}"
+
       - name: Package chart
         env:
-          HELM_REPO_NAME: upload
-
           CHARTMUSEUM_PASSWORD: ${{ secrets.CHARTMUSEUM_PASSWORD }}
           CHARTMUSEUM_REPOSITORY: ${{ vars.CHARTMUSEUM_REPOSITORY }}
           CHARTMUSEUM_USERNAME: ${{ secrets.CHARTMUSEUM_USERNAME }}
@@ -43,4 +50,4 @@ jobs:
           # gitea
           helm repo add --username ${REPOSITORY_OWNER} --password ${GITEA_PACKAGE_REGISTRY_TOKEN} gitea ${GITEA_SERVER_URL}/api/packages/${REPOSITORY_OWNER}/helm
           helm cm-push ${REPOSITORY_NAME}-${PACKAGE_VERSION}.tgz gitea
-          helm repo remove gitea
\ No newline at end of file
+          helm repo remove gitea
diff --git a/Chart.yaml b/Chart.yaml
index cf5bc82..0383ad6 100644
--- a/Chart.yaml
+++ b/Chart.yaml
@@ -1,3 +1,9 @@
+annotations:
+  artifacthub.io/links: |
+    - name: Prometheus PostgreSQL exporter (binary)
+      url: https://github.com/prometheus-community/postgres_exporter
+    - name: support
+      url: https://git.cryptic.systems/volker.raschek/prometheus-postgres-exporter/issues
 apiVersion: v2
 name: prometheus-postgres-exporter
 description: Prometheus metric exporter for PostgreSQL