pre-release.yml

name: pre-release helm chart

on:
  pull_request:
    types:
      - closed

env:
  HELM_VERSION: v3.15.2

jobs:
  pre-release:
    if: github.event.pull_request.merged == true || github.ref == 'refs/heads/main'
    runs-on: ubuntu-latest

    steps:
      - name: checkout code
        uses: actions/checkout@v2

      - uses: azure/setup-helm@v4
        with:
          version: ${{ env.HELM_VERSION }}

      - name: determine version increment
        id: determine-version
        run: |
          PR_TITLE=$(echo "${{ github.event.pull_request.title }}" | tr '[:upper:]' '[:lower:]')
          if [[ "$PR_TITLE" =~ "major:" ]]; then
            echo "version_type=major" >> $GITHUB_ENV
          elif [[ "$PR_TITLE" =~ "minor:" ]]; then
            echo "version_type=minor" >> $GITHUB_ENV
          else
            echo "version_type=patch" >> $GITHUB_ENV
          fi
          echo "Version increment type: ${{ env.version_type }}"

      - name: install yq
        uses: mikefarah/yq@master

#      - name: Setup upterm session
#        uses: lhotari/action-upterm@v1

      - name: bump chart versions
        id: bump-version
        run: |
          cd helm-chart/eoapi
          VERSION_TYPE=${{ env.version_type }}

          CURRENT_VERSION=$(grep '^version:' Chart.yaml | awk '{print $2}')
          # strip double quotes
          CURRENT_VERSION=${CURRENT_VERSION#\"}
          CURRENT_VERSION=${CURRENT_VERSION%\"}

          CURRENT_APP_VERSION=$(grep '^appVersion:' Chart.yaml | awk '{print $2}')
          # strip double quotes
          CURRENT_APP_VERSION=${CURRENT_APP_VERSION#\"}
          CURRENT_APP_VERSION=${CURRENT_APP_VERSION%\"}

          IFS='.' read -r -a VERSION_PARTS <<< "$CURRENT_VERSION"
          IFS='.' read -r -a APP_VERSION_PARTS <<< "$CURRENT_APP_VERSION"

          if [[ "$VERSION_TYPE" == "major" ]]; then
            NEW_VERSION="$((VERSION_PARTS[0] + 1)).0.0"
            # appVersion does not need to follow semvar
            NEW_APP_VERSION="${APP_VERSION_PARTS[0]}.${APP_VERSION_PARTS[1]}.$((APP_VERSION_PARTS[2] + 1))"
          elif [[ "$VERSION_TYPE" == "minor" ]]; then
            NEW_VERSION="${VERSION_PARTS[0]}.$((VERSION_PARTS[1] + 1)).0"
            # appVersion does not need to follow semvar
            NEW_APP_VERSION="${APP_VERSION_PARTS[0]}.${APP_VERSION_PARTS[1]}.$((APP_VERSION_PARTS[2] + 1))"
          else
            NEW_VERSION="${VERSION_PARTS[0]}.${VERSION_PARTS[1]}.$((VERSION_PARTS[2] + 1))"
            # appVersion does not need to follow semvar
            NEW_APP_VERSION="${APP_VERSION_PARTS[0]}.${APP_VERSION_PARTS[1]}.$((APP_VERSION_PARTS[2] + 1))"
          fi

          yq -i '.version = strenv(NEW_VERSION)' Chart.yaml
          yq -i '.appVersion = strenv(NEW_APP_VERSION)' Chart.yaml

          echo "new_version=$NEW_VERSION" >> $GITHUB_ENV
          echo "New version: $NEW_VERSION"
          echo "New app version: $NEW_APP_VERSION"

      - name: commit and tag version bump
        run: |
          COMMIT_MSG="release version to ${{ env.new_version }}"
          TAG="v${{ env.new_version }}"

          git config --global user.email "actions@github.com"
          git config --global user.name "GitHub Actions"
          git commit -am $COMMIT_MSG
          git tag $TAG
          git push origin main --tags

      - name: create github release (triggers release)
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: "v${{ env.new_version }}"
          release_name: "v${{ env.new_version }}"
          body: |
            ## Changes in this Release
            - Auto-generated release based on PR merge.