Add drone pipeline to release charts in gh-pages branch

.drone.yml

@@ -0,0 +1,90 @@
+kind: pipeline
+type: docker
+name: update-helm-charts
+
+steps:
+  # Step 1: Lint all Helm charts
+  - name: lint-charts
+    image: alpine/helm:latest
+    commands:
+      - find charts -maxdepth 1 -type d -not -path charts -exec helm lint {} \;
+
+  # Step 2: Package only changed Helm charts
+  - name: package-changed-charts
+    image: alpine/helm:latest
+    commands:
+      - mkdir -p charts/dist
+      # Detect changed chart directories and package them
+      - CHANGED_CHARTS=$(git diff --name-only $DRONE_PREV_COMMIT $DRONE_COMMIT | grep '^charts/' | sed 's|/[^/]*$||' | sort -u)
+      - if [ -n "$CHANGED_CHARTS" ]; then echo "$CHANGED_CHARTS" | xargs -I {} helm package {} --destination charts/dist; else echo "No charts changed"; fi
+    depends_on:
+      - lint-charts
+
+  # Step 3: Fetch the existing index.yaml from Gitea (if it exists)
+  - name: fetch-existing-index
+    image: curlimages/curl
+    commands:
+      - apk add jq
+      - LATEST_TAG=$(curl -s -H "Authorization: token $GITEA_API_KEY" https://git.interlegis.leg.br/api/v1/repos/seit/rancher-charts/releases?limit=1 | jq -r '.[0].tag_name')
+      - if [ -n "$LATEST_TAG" ]; then curl -L -o charts/dist/index.yaml https://git.interlegis.leg.br/seit/rancher-charts/releases/download/$LATEST_TAG/index.yaml || true; fi
+    environment:
+      GITEA_API_KEY:
+        from_secret: gitea_api_key
+    depends_on:
+      - package-changed-charts
+
+  # Step 4: Update index.yaml with changed charts (skip if no changes)
+  - name: update-index
+    image: alpine/helm:latest
+    commands:
+      - if [ -n "$(ls charts/dist/*.tgz 2>/dev/null)" ]; then helm repo index charts/dist --url https://git.interlegis.leg.br/seit/rancher-charts/raw/branch/gh-pages/ --merge charts/dist/index.yaml; else echo "No new charts to index"; fi
+    depends_on:
+      - fetch-existing-index
+
+  # Step 5: Push charts and index to gh-pages branch without credentials file
+  - name: push-to-branch
+    image: alpine/git
+    commands:
+      # Set up the gh-pages branch
+      - git fetch origin gh-pages || echo "gh-pages not found, will create it"
+      - git checkout gh-pages || git checkout -b gh-pages
+      # Copy new chart artifacts
+      - mkdir -p charts/dist
+      - cp -r $DRONE_WORKSPACE/charts/dist/* charts/dist/
+      # Commit changes
+      - git add charts/dist/*
+      - git commit -m "Update Helm charts from commit ${DRONE_COMMIT}" || echo "No changes to commit"
+      # Push with API key in URL and check for failure
+      - git push https://x:${GITEA_API_KEY}@git.interlegis.leg.br/seit/rancher-charts.git HEAD:gh-pages --force || { echo "Git push failed"; exit 1; }
+    environment:
+      GITEA_API_KEY:
+        from_secret: gitea_api_key
+    when:
+      condition: ls charts/dist/*.tgz 2>/dev/null  # Only run if there are new .tgz files
+    depends_on:
+      - update-index
+
+  # Step 6: Create or update Gitea release with changed artifacts
+  - name: release-to-gitea
+    image: plugins/gitea-release
+    settings:
+      api_key:
+        from_secret: gitea_api_key
+      base_url: https://git.interlegis.leg.br
+      files:
+        - charts/dist/*.tar.gz
+        - charts/dist/index.yaml
+      title: "Helm Charts Update - ${DRONE_COMMIT}"
+      note: "Updated Helm repository from commit ${DRONE_COMMIT}"
+      draft: false
+      prerelease: true
+    when:
+      condition: ls charts/dist/*.tgz 2>/dev/null  # Only run if there are new .tgz files
+    depends_on:
+      - push-to-branch
+
+trigger:
+  branch:
+    - main
+  event:
+    - push