octopus_exporter/.github/workflows/release.yml

name: Release

on:
  push:
    branches: [main]

permissions:
  contents: write

jobs:
  release:
    runs-on: ubuntu-latest
    if: "!startsWith(github.event.head_commit.message, 'chore:')"
    steps:
      - uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Determine version
        id: version
        run: |
          LATEST_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "")
          echo "Latest tag: ${LATEST_TAG:-none}"

          if [ -z "$LATEST_TAG" ]; then
            COMMITS=$(git log HEAD --pretty=format:"%s")
          else
            COMMITS=$(git log ${LATEST_TAG}..HEAD --pretty=format:"%s")
          fi
          echo "Commits since last tag:"
          echo "$COMMITS"

          VERSION=${LATEST_TAG:-v0.0.0}
          VERSION=${VERSION#v}
          MAJOR=$(echo $VERSION | cut -d. -f1)
          MINOR=$(echo $VERSION | cut -d. -f2)
          PATCH=$(echo $VERSION | cut -d. -f3)

          if echo "$COMMITS" | grep -qE "^major:"; then
            MAJOR=$((MAJOR + 1)); MINOR=0; PATCH=0
          elif echo "$COMMITS" | grep -qE "^feat:"; then
            MINOR=$((MINOR + 1)); PATCH=0
          else
            PATCH=$((PATCH + 1))
          fi

          NEW_VERSION="v${MAJOR}.${MINOR}.${PATCH}"
          echo "New version: $NEW_VERSION"
          echo "version=$NEW_VERSION" >> $GITHUB_OUTPUT

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v4

      - name: Log in to DockerHub
        uses: docker/login-action@v4
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PAT }}

      - name: Build and push
        uses: docker/build-push-action@v7
        with:
          context: .
          push: true
          platforms: linux/amd64,linux/arm64
          build-args: |
            VERSION=${{ steps.version.outputs.version }}
            COMMIT=${{ github.sha }}
          tags: |
            rwejlgaard/octopus_exporter:${{ steps.version.outputs.version }}
            rwejlgaard/octopus_exporter:latest

      - name: Tag release
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git tag ${{ steps.version.outputs.version }}
          git push origin ${{ steps.version.outputs.version }}