name: Pull Request Workflow for Helm Chart changes

on:
  pull_request:
    branches:
      - master
      - 'v**'      
    paths:
      - 'deployments/kubernetes/chart/reloader/**'

env:
  DOCKER_FILE_PATH: Dockerfile
  DOCKER_UBI_FILE_PATH: Dockerfile.ubi
  KUBERNETES_VERSION: "1.30.0"
  KIND_VERSION: "0.23.0"
  REGISTRY: ghcr.io

# Default to no GITHUB_TOKEN permissions; each job opts into the minimum it needs.
permissions: {}

jobs:

  helm-chart-validation:
    permissions:
      contents: read

    runs-on: ubuntu-latest
    name: Helm Chart Validation

    steps:

    - name: Check out code
      uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
      with:
        ref: ${{github.event.pull_request.head.sha}}
        fetch-depth: 0

    # Setting up helm binary
    - name: Set up Helm
      uses: azure/setup-helm@1a275c3b69536ee54be43f2070a358922e12c8d4 # v4
      with:
        version: v3.20.2

    - name: Helm chart unit tests
      uses: d3adb5/helm-unittest-action@850bc76597579183998069830d5fa8c3ef0ea34a # v2
      with:
        charts: deployments/kubernetes/chart/reloader
        helm-version: v3.20.2
        github-token: ${{ secrets.GITHUB_TOKEN }}

  helm-version-validation:
    needs: helm-chart-validation

    permissions:
      contents: read

    runs-on: ubuntu-latest
    name: Helm Version Validation
    if: ${{ contains(github.event.pull_request.labels.*.name, 'release/helm-chart') }}

    steps:

    - name: Check out code
      uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
      with:
        ref: ${{github.event.pull_request.head.sha}}
        fetch-depth: 0

    - name: Add Stakater Helm Repo
      run: |
        helm repo add stakater https://stakater.github.io/stakater-charts

    - name: Get version for chart from helm repo
      id: chart_eval
      run: |
        current_chart_version=$(helm search repo stakater/reloader-v2 | tail -n 1 | awk '{print $2}')
        echo "CURRENT_CHART_VERSION=$(echo ${current_chart_version})" >> $GITHUB_OUTPUT

    - name: Get Updated Chart version from Chart.yaml
      uses: mikefarah/yq@751d8ad57b84f1794661bc70c0afb92a22ad7b3c # v4.53.2
      id: new_chart_version
      with:
        cmd: yq e '.version' deployments/kubernetes/chart/reloader/Chart.yaml

    # Skip the version-increase gate on first publish, when no reloader-v2
    # chart exists yet in the repo (CURRENT_CHART_VERSION is empty).
    - name: Check Version
      if: steps.chart_eval.outputs.CURRENT_CHART_VERSION != ''
      uses: aleoyakas/check-semver-increased-action@415c9c60054c2442c03478b6dd96a195deac6695 # v1
      id: check-version
      with:
        current-version: ${{ steps.new_chart_version.outputs.result }}
        previous-version: ${{ steps.chart_eval.outputs.CURRENT_CHART_VERSION }}

    - name: Fail if Helm Chart version isnt updated
      if: steps.chart_eval.outputs.CURRENT_CHART_VERSION != '' && steps.check-version.outputs.is-version-increased != 'true'
      run: |
        echo "Helm Chart Version wasnt updated"
        exit 1