helm-chart-dependency.yml

name: Check for Helm Chart Updates

on:
  schedule:
    - cron: '0 0 * * *'
  pull_request:
    types: [opened, edited, reopened, synchronize]
  workflow_dispatch:

jobs:
  check-helm-chart-update:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Setup Helm
        uses: yokawasa/action-setup-kube-tools@v0.11.1
        with:
          setup-tools: |
            helm
          helm: '3.14.3'

      - name: Add Prometheus Community Repo and Update
        run: |
          helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
          helm repo update

      - name: Get Latest Helm Chart Version
        id: latest_version
        run: |
          version=$(helm search repo prometheus-community/kube-prometheus-stack -o json | jq -r '.[0].version')
          echo "LATEST_VERSION=$version" >> $GITHUB_ENV

      - name: Check Current Version
        id: current_version
        run: |
          # Extract the entire block of lines related to the helm upgrade command
          block=$(awk '/helm upgrade --install kube-prometheus-stack prometheus-community\/kube-prometheus-stack/{flag=1; next} flag && /--version/{print; exit}' scripts/deploy.sh)

          # Print the extracted block for debugging
          echo "Extracted block: $block"
          current_version=$(echo "$block" | awk '{print $2}')
          echo "CURRENT_VERSION=$current_version" >> $GITHUB_ENV

      - name: Compare Versions and Update
        run: |
          echo "LATEST_VERSION=${{ env.LATEST_VERSION }}"
          echo "CURRENT_VERSION=${{ env.CURRENT_VERSION }}"

          if [ "${{ env.LATEST_VERSION }}" != "${{ env.CURRENT_VERSION }}" ]; then
            echo "Updating to version ${{ env.LATEST_VERSION }}"
            sed -i '/helm upgrade --install kube-prometheus-stack prometheus-community\/kube-prometheus-stack/{n; s/\(--version \)[^ ]*/\1${{ env.LATEST_VERSION }}/}' scripts/deploy.sh
            git config --global user.email "actions@github.com"
            git config --global user.name "GitHub Actions"
            git checkout -b update-helm-chart
            git status
            git add scripts/deploy.sh
            git commit -m "Update kube-prometheus-stack to version ${{ env.LATEST_VERSION }}"
            git push origin update-helm-chart --force
            echo ${{ secrets.GITHUB_TOKEN }} | gh auth login --with-token
            pr_url=$(gh pr list --base main --head update-helm-chart --json url -q '.[0].url')
            if [ -n "$pr_url" ]; then
             echo "Pull request already exists: $pr_url"
             gh pr edit "$pr_url" --title "Update kube-prometheus-stack to version ${{ env.LATEST_VERSION }}" --body "This PR updates the kube-prometheus-stack Helm chart to the latest version."
            else
             gh pr create --title "Update kube-prometheus-stack to version ${{ env.LATEST_VERSION }}" --body "This PR updates the kube-prometheus-stack Helm chart to the latest version."
            fi
          else
            echo "No updates available."
            echo ${{ secrets.GITHUB_TOKEN }} | gh auth login --with-token
            pr_url=$(gh pr list --base main --head update-helm-chart --json url -q '.[0].url')
            if [ -n "$pr_url" ]; then
              echo "Closing existing PR: $pr_url"
              gh pr close "$pr_url" --comment "Closing PR as the current version matches the latest version."
            fi
          fi