release.yml

name: Release
on:
  workflow_dispatch:
    inputs:
      semver-type:
        description: 'Can be one of [major,minor,patch]. CAUTION: This will enforce a new release with the specified semantic version type bumped.'
        required: false
env:
  NODE_VERSION: 16
  KEPTN_BOT_NAME: "Keptn Bot"
  KEPTN_BOT_EMAIL: "keptn-bot <86361500+keptn-bot@users.noreply.github.com>"
  RELEASE_NOTES_FILE: "RELEASE-BODY.md"
defaults:
  run:
    shell: bash
jobs:
  prepare:
    name: Prepare release run
    runs-on: ubuntu-20.04
    outputs:
      next-version: ${{ steps.version_number.outputs.next-version }}
      branch: ${{ steps.current_branch.outputs.branch }}
    steps:
      - name: Check SemVer input
        env:
          SEMVER_TYPE: ${{ github.event.inputs.semver-type }}
        run: |
          if [[ ! -z "$SEMVER_TYPE" ]]; then
            echo "SemVer Type is defined. Checking for valid SemVer type..."
            if [[ "$SEMVER_TYPE" == "major" ]] || [[ "$SEMVER_TYPE" == "minor" ]] || [[ "$SEMVER_TYPE" == "patch" ]]; then
              echo "::notice::SemVer Type is correctly set to $SEMVER_TYPE! Continuing with this version bump..."
            else
              echo "::error::ERROR: Enforced SemVer does not match any of [major,minor,patch]!"
              echo "Exiting..."
              exit 1
            fi
          else
            echo "::notice::No SemVer type defined, continuing with auto generated version number..."
          fi

      - name: Checkout repo
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Find next version number
        id: version_number
        env:
          SEMVER_TYPE: ${{ github.event.inputs.semver-type }}
        run: |
          if [[ ! -z "$SEMVER_TYPE" ]]; then
            npx standard-version@^9.3.1 \
              --skip.commit \
              --skip.tag \
              --skip.changelog \
              --release-as "$SEMVER_TYPE"
          else
            npx standard-version@^9.3.1 \
              --skip.commit \
              --skip.tag \
              --skip.changelog
          fi

          NEXT_VERSION=$(cat VERSION.txt)
          echo "::set-output name=next-version::${NEXT_VERSION}"
          git checkout HEAD -- VERSION.txt

      - name: Find current branch
        id: current_branch
        run: |
          branch=${GITHUB_REF#refs/heads/}
          echo "::set-output name=branch::${branch}"
  test:
    needs: prepare
    strategy:
      matrix:
        go-version: [ 1.20.x ]
        platform: [ ubuntu-latest ]
    runs-on: ${{ matrix.platform }}
    env:
      GO111MODULE: "on"
      GOPROXY: "https://proxy.golang.org"
    steps:
      - name: Install Go
        uses: actions/setup-go@v4
        with:
          go-version: ${{ matrix.go-version }}
      - name: Checkout code
        uses: actions/checkout@v3
      - name: Test
        run: go test -race -v ./...
  release:
    name: "Release"
    runs-on: ubuntu-20.04
    needs: [ prepare, test ]
    steps:
      - name: Checkout repo
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
          token: ${{ secrets.KEPTN_BOT_TOKEN }}

      - name: Set up Node.js
        uses: actions/setup-node@v3
        with:
          node-version: ${{ env.NODE_VERSION }}

      - name: Configure Git
        env:
          KEPTN_BOT_NAME: ${{ env.KEPTN_BOT_NAME }}
          KEPTN_BOT_EMAIL: ${{ env.KEPTN_BOT_EMAIL }}
        run: |
          git config user.name "$KEPTN_BOT_NAME"
          git config user.email "$KEPTN_BOT_EMAIL"

      - name: Prepare GitHub Release Notes
        env:
          SEMVER_TYPE: ${{ github.event.inputs.semver-type }}
        run: |
          # Delete pre-release tags to be able to generate a changelog from last 'real' release
          # This is a workaround for a known limitation of standard-version
          # Reference: https://github.com/conventional-changelog/standard-version/issues/203#issuecomment-872415140
          git tag -l | grep -vE '^v(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)$' | xargs git tag -d

          if [[ ! -z "$SEMVER_TYPE" ]]; then
            npx standard-version@^9.3.1 \
              -i "${{ env.RELEASE_NOTES_FILE }}" \
              --skip.commit \
              --skip.tag \
              --header "" \
              --release-as "$SEMVER_TYPE"
          else
            npx standard-version@^9.3.1 \
              -i "${{ env.RELEASE_NOTES_FILE }}" \
              --skip.commit \
              --skip.tag \
              --header ""
          fi

      - name: Temporarily disable "include administrators" branch protection
        uses: benjefferies/branch-protection-bot@ab95ff5efbc98a970305f21549646164fc7c0556
        with:
          access_token: ${{ secrets.KEPTN_BOT_TOKEN }}
          branch: ${{ needs.prepare.outputs.branch }}
          enforce_admins: false

      - name: Create release package
        id: create-release-package
        env:
          SEMVER_TYPE: ${{ github.event.inputs.semver-type }}
          GITHUB_TOKEN: ${{ secrets.KEPTN_BOT_TOKEN }}
        run: |
          echo "🚀 Creating release package now..."

          if [[ ! -z "$SEMVER_TYPE" ]]; then
            npx standard-version@^9.3.1 \
              --release-as "$SEMVER_TYPE"
          else
            npx standard-version@^9.3.1
          fi

          echo "::set-output name=tag-name::$(git describe --tags --abbrev=0)"

          echo "Fetching previously deleted old tags..."
          git fetch origin --tags -f
          echo "⚡️ Pushing changes to remote repository..."
          git push --follow-tags

      - name: Enable "include administrators" branch protection
        uses: benjefferies/branch-protection-bot@ab95ff5efbc98a970305f21549646164fc7c0556
        if: always() # Force to always run this step to ensure "include administrators" is always turned back on
        with:
          access_token: ${{ secrets.KEPTN_BOT_TOKEN }}
          branch: ${{ needs.prepare.outputs.branch }}
          enforce_admins: true

      - name: Create GitHub Release
        env:
          GITHUB_TOKEN: ${{ secrets.KEPTN_BOT_TOKEN }}
          RELEASE_TAG: ${{ steps.create-release-package.outputs.tag-name }}
        run: |
          gh release create "$RELEASE_TAG" --draft --notes-file "${{ env.RELEASE_NOTES_FILE }}" --title "$RELEASE_TAG"