name: Publish consumable Docker images

on:
  push:
    tags: ['*.*.*']

jobs:
  compile:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        arch:
        - x86_64-unknown-linux-musl
        - x86_64-unknown-linux-gnu
    steps:
    - uses: actions/checkout@v1
    - run: cargo install cross
    - name: compile for specific target
      env: { arch: '${{ matrix.arch }}' }
      run: |
        cross build --target ${{ matrix.arch }} --release
        # leave only the executable file
        rm -rd target/${{ matrix.arch }}/release/{*/*,*.d,*.rlib,.fingerprint}
        find . -empty -delete
    - uses: actions/upload-artifact@master
      with:
        name: ${{ matrix.arch }}
        path: target/${{ matrix.arch }}/release

  docker:
    name: Build and publish docker images
    needs: compile
    runs-on: ubuntu-latest
    strategy:
      matrix:
        base-image: [debian, 'debian:stable-slim', alpine]
        include:
        - { tag: alpine, base-image: alpine,               arch: x86_64-unknown-linux-musl }
        - { tag: slim,   base-image: 'debian:stable-slim', arch: x86_64-unknown-linux-gnu  }
        - { tag: debian, base-image: debian,               arch: x86_64-unknown-linux-gnu  }
    steps:
    - uses: actions/checkout@v1
    - uses: actions/download-artifact@master
      with: { name: '${{ matrix.arch }}', path: target/release }
    - name: Build and publish exact version
      run: |
        REGISTRY=${REGISTRY,,}; export TAG=${GITHUB_REF##*/}-${{ matrix.tag }};

        echo ${{ secrets.DOCKER_REGISTRY }} | docker login docker.pkg.github.com -u ${{ github.actor }} --password-stdin
        docker-compose --file docker/docker-compose.package.yml build
        docker-compose --file docker/docker-compose.package.yml push              # exact version
      env:
        BASE_IMAGE: ${{ matrix.base-image }}
        REGISTRY: docker.pkg.github.com/${{ github.repository }}

    #region semantics tagging
    - name: Retag and push without suffixing version
      run: |
        VERSION=${GITHUB_REF##*/}
        docker tag ${REGISTRY,,}/nu:${VERSION}-${{ matrix.tag }} ${REGISTRY,,}/nu:${{ matrix.tag }}
        docker tag ${REGISTRY,,}/nu:${VERSION}-${{ matrix.tag }} ${REGISTRY,,}/nu:${VERSION%%.*}-${{ matrix.tag }}
        docker tag ${REGISTRY,,}/nu:${VERSION}-${{ matrix.tag }} ${REGISTRY,,}/nu:${VERSION%.*}-${{ matrix.tag }}
        docker push ${REGISTRY,,}/nu:${VERSION%.*}-${{ matrix.tag }}              # latest patch
        docker push ${REGISTRY,,}/nu:${VERSION%%.*}-${{ matrix.tag }}             # latest features
        docker push ${REGISTRY,,}/nu:${{ matrix.tag }}                            # latest version
      env: { REGISTRY: 'docker.pkg.github.com/${{ github.repository }}' }
    - name: Retag and push debian as latest
      if: matrix.tag == 'debian'
      run: |
        VERSION=${GITHUB_REF##*/}
        docker tag ${REGISTRY,,}/nu:${{ matrix.tag }} ${REGISTRY,,}/nu:latest
        docker tag ${REGISTRY,,}/nu:${VERSION}-${{ matrix.tag }} ${REGISTRY,,}/nu:${VERSION%.*}
        docker tag ${REGISTRY,,}/nu:${VERSION}-${{ matrix.tag }} ${REGISTRY,,}/nu:${VERSION%%.*}
        docker tag ${REGISTRY,,}/nu:${VERSION}-${{ matrix.tag }} ${REGISTRY,,}/nu:${VERSION}
        docker push ${REGISTRY,,}/nu:${VERSION}       # exact version
        docker push ${REGISTRY,,}/nu:${VERSION%%.*}   # latest features
        docker push ${REGISTRY,,}/nu:${VERSION%.*}    # latest patch
        docker push ${REGISTRY,,}/nu:latest           # latest version
      env: { REGISTRY: 'docker.pkg.github.com/${{ github.repository }}' }
    #endregion semantics tagging