main.yml

---
name: CI

"on":
  push:
    branches:
      - "main"
    tags:
      - "v*.*.*"
  pull_request:
    branches:
      - "main"

permissions:
  contents: read

env:
  DOCKER_PLATFORMS: "linux/amd64,linux/arm64,linux/386"

jobs:
  meta:
    name: Derive Build Metadata
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Derive version string
        id: bin_version
        run: echo "bin_version=$(./.version.sh)" >> "$GITHUB_OUTPUT"
      - name: bin_version
        run: "echo bin_version: ${{ steps.bin_version.outputs.bin_version }}"
      - name: Check if this is a running version tag update
        id: running_version_tag
        run: |
          if [ -z "${{ github.event.ref }}" ]; then
              echo "is_running_version_tag_update=false" >> "$GITHUB_OUTPUT"
          elif [[ "${{ github.event.ref }}" =~ ^refs/tags/v[0-9]+\.[0-9]+$ ]]; then
              echo "is_running_version_tag_update=true" >> "$GITHUB_OUTPUT"
          elif [[ "${{ github.event.ref }}" =~ ^refs/tags/v[0-9]+$ ]]; then
              echo "is_running_version_tag_update=true" >> "$GITHUB_OUTPUT"
          else
              echo "is_running_version_tag_update=false" >> "$GITHUB_OUTPUT"
          fi
      - name: is_running_version_tag
        run: "echo is_running_version_tag_update: ${{ steps.running_version_tag.outputs.is_running_version_tag_update }}"
    outputs:
      project_name: ${{ github.event.repository.name }}
      bin_version: ${{ steps.bin_version.outputs.bin_version }}
      dockerhub_owner: ${{ github.repository_owner }}
      ghcr_owner: ${{ github.repository_owner }}
      is_prerelease: >-
        ${{
          steps.running_version_tag.outputs.is_running_version_tag_update != 'true' &&
          startsWith(github.ref, 'refs/tags/v') &&
            (contains(github.ref, '-alpha.')
            || contains(github.ref, '-beta.')
            || contains(github.ref, '-rc.'))
        }}
      is_release: >-
        ${{
          steps.running_version_tag.outputs.is_running_version_tag_update != 'true' &&
          startsWith(github.ref, 'refs/tags/v') &&
            !(contains(github.ref, '-alpha.')
            || contains(github.ref, '-beta.')
            || contains(github.ref, '-rc.'))
        }}
      is_pull_request: ${{ github.event_name == 'pull_request' }}
      is_running_version_tag_update: ${{ steps.running_version_tag.outputs.is_running_version_tag_update }}

  lint:
    name: Lint
    runs-on: ubuntu-latest
    permissions:
      contents: write
      checks: write
      issues: write
      pull-requests: write
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Run MegaLinter
        uses: oxsecurity/megalinter@v7
        env:
          # See https://megalinter.io/configuration and .mega-linter.yml
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      - name: Archive MegaLinter artifacts
        if: ( !env.ACT && ( success() || failure() ) )
        uses: actions/upload-artifact@v3
        with:
          name: MegaLinter artifacts
          path: |
            megalinter-reports
            mega-linter.log

  docker:
    name: Docker Images
    needs: [lint, meta]
    if: needs.meta.outputs.is_running_version_tag_update != 'true'
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Login to GHCR
        if: needs.meta.outputs.is_pull_request != 'true'
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Login to Docker Hub
        if: needs.meta.outputs.is_pull_request != 'true'
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
        with:
          platforms: all

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v3

      - name: Available platforms
        run: echo ${{ steps.buildx.outputs.platforms }}

      - name: Docker meta
        id: docker_meta
        uses: docker/metadata-action@v5
        with:
          images: |
            ${{ needs.meta.outputs.dockerhub_owner }}/${{ needs.meta.outputs.project_name }}
            ghcr.io/${{ needs.meta.outputs.ghcr_owner }}/${{ needs.meta.outputs.project_name }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ./Dockerfile
          platforms: ${{ env.DOCKER_PLATFORMS }}
          builder: ${{ steps.buildx.outputs.name }}
          push: ${{ needs.meta.outputs.is_pull_request != 'true' }}
          tags: ${{ steps.docker_meta.outputs.tags }}
          labels: ${{ steps.docker_meta.outputs.labels }}
          build-args: |
            BIN_VERSION=${{ needs.meta.outputs.bin_version }}

      - name: Update Docker Hub description
        if: needs.meta.outputs.is_release == 'true'
        uses: peter-evans/dockerhub-description@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
          repository: ${{ needs.meta.outputs.dockerhub_owner }}/${{ needs.meta.outputs.project_name }}
          readme-filepath: ./README.md
          short-description: ${{ github.event.repository.description }}

  release:
    name: GitHub (Pre)Release
    needs: [meta, docker]
    if: >-
      needs.meta.outputs.is_release == 'true' ||
      needs.meta.outputs.is_prerelease == 'true'
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Create GitHub release
        uses: softprops/action-gh-release@v1
        with:
          prerelease: ${{ needs.meta.outputs.is_prerelease == 'true' }}
          generate_release_notes: true

  tags:
    name: Update Release Tags
    needs: [meta, release]
    if: needs.meta.outputs.is_release == 'true'
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Update running major/minor version tags
        uses: sersoft-gmbh/running-release-tags-action@v3
        with:
          fail-on-non-semver-tag: true
          create-release: false
          update-full-release: false