# See: https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions

# Workflow name
name: Release

# Run on tag push
on:
 push:
  tags:
  - '**'

jobs:

  #
  # Build on AlmaLinux 8.5 using go-toolset
  #
  AlmaLinux-RPM-build:
    runs-on: ubuntu-latest
    # See: https://hub.docker.com/_/almalinux
    container: almalinux:8.5
    # The job outputs link to the outputs of the 'rpmrename' step
    # Only job outputs can be used in child jobs
    outputs:
      rpm : ${{steps.rpmrename.outputs.RPM}}
      srpm : ${{steps.rpmrename.outputs.SRPM}}
    steps:

    # Use dnf to install development packages
    - name: Install development packages
      run: dnf --assumeyes group install "Development Tools" "RPM Development Tools"

    # Checkout git repository and submodules
    # fetch-depth must be 0 to use git describe
    # See: https://github.com/marketplace/actions/checkout
    - name: Checkout
      uses: actions/checkout@v2
      with:
        submodules: recursive
        fetch-depth: 0

    # Use dnf to install build dependencies
    - name: Install build dependencies
      run: |
        dnf --assumeyes install 'dnf-command(builddep)'
        dnf --assumeyes install which
        dnf --assumeyes builddep scripts/cc-metric-collector.spec

    - name: RPM build MetricCollector
      id: rpmbuild
      run: make RPM

    # AlmaLinux 8.5 is a derivate of RedHat Enterprise Linux 8 (UBI8),
    # so the created RPM both contain the substring 'el8' in the RPM file names
    # This step replaces the substring 'el8' to 'alma85'. It uses the move operation
    # because it is unclear whether the default AlmaLinux 8.5 container contains the 
    # 'rename' command. This way we also get the new names for output.
    - name: Rename RPMs (s/el8/alma85/)
      id: rpmrename
      run: |
        OLD_RPM="${{steps.rpmbuild.outputs.RPM}}"
        OLD_SRPM="${{steps.rpmbuild.outputs.SRPM}}"
        NEW_RPM="${OLD_RPM/el8/alma85}"
        NEW_SRPM=${OLD_SRPM/el8/alma85}
        mv "${OLD_RPM}" "${NEW_RPM}"
        mv "${OLD_SRPM}" "${NEW_SRPM}"
        echo "::set-output name=SRPM::${NEW_SRPM}"
        echo "::set-output name=RPM::${NEW_RPM}"

    # See: https://github.com/actions/upload-artifact
    - name: Save RPM as artifact
      uses: actions/upload-artifact@v2
      with:
        name: cc-metric-collector RPM for AlmaLinux 8.5
        path: ${{ steps.rpmrename.outputs.RPM }}
    - name: Save SRPM as artifact
      uses: actions/upload-artifact@v2
      with:
        name: cc-metric-collector SRPM for AlmaLinux 8.5
        path: ${{ steps.rpmrename.outputs.SRPM }}

  #
  # Build on UBI 8 using go-toolset
  #
  UBI-8-RPM-build:
    runs-on: ubuntu-latest
    # See: https://catalog.redhat.com/software/containers/ubi8/ubi/5c359854d70cc534b3a3784e?container-tabs=gti
    container: registry.access.redhat.com/ubi8/ubi:8.5-226.1645809065
    # The job outputs link to the outputs of the 'rpmbuild' step
    outputs:
      rpm : ${{steps.rpmbuild.outputs.RPM}}
      srpm : ${{steps.rpmbuild.outputs.SRPM}}
    steps:

    # Use dnf to install development packages
    - name: Install development packages
      run: dnf --assumeyes --disableplugin=subscription-manager install rpm-build go-srpm-macros rpm-build-libs rpm-libs gcc make python38 git

    # Checkout git repository and submodules
    # fetch-depth must be 0 to use git describe
    # See: https://github.com/marketplace/actions/checkout
    - name: Checkout
      uses: actions/checkout@v2
      with:
        submodules: recursive
        fetch-depth: 0

    # Use dnf to install build dependencies
    - name: Install build dependencies
      run: dnf --assumeyes --disableplugin=subscription-manager builddep scripts/cc-metric-collector.spec

    - name: RPM build MetricCollector
      id: rpmbuild
      run: make RPM

    # See: https://github.com/actions/upload-artifact
    - name: Save RPM as artifact
      uses: actions/upload-artifact@v2
      with:
        name: cc-metric-collector RPM for UBI 8
        path: ${{ steps.rpmbuild.outputs.RPM }}
    - name: Save SRPM as artifact
      uses: actions/upload-artifact@v2
      with:
        name: cc-metric-collector SRPM for UBI 8
        path: ${{ steps.rpmbuild.outputs.SRPM }}

  #
  # Create release with fresh RPMs
  #
  Release:
    runs-on: ubuntu-latest
    # We need the RPMs, so add dependency
    needs: [AlmaLinux-RPM-build, UBI-8-RPM-build]

    steps:
    # See: https://github.com/actions/download-artifact
    - name: Download AlmaLinux 8.5 RPM
      uses: actions/download-artifact@v2
      with:
        name: cc-metric-collector RPM for AlmaLinux 8.5
    - name: Download AlmaLinux 8.5 SRPM
      uses: actions/download-artifact@v2
      with:
        name: cc-metric-collector SRPM for AlmaLinux 8.5
    
    - name: Download UBI 8 RPM
      uses: actions/download-artifact@v2
      with:
        name: cc-metric-collector RPM for UBI 8
    - name: Download UBI 8 SRPM
      uses: actions/download-artifact@v2
      with:
        name: cc-metric-collector SRPM for UBI 8

    # The download actions do not publish the name of the downloaded file,
    # so we re-use the job outputs of the parent jobs. The files are all
    # downloaded to the current folder.
    # The gh-release action afterwards does not accept file lists but all
    # files have to be listed at 'files'. The step creates one output per
    # RPM package (2 per distro)
    - name: Set RPM variables
      id: files
      run: |
        ALMA_85_RPM=$(basename "${{ needs.AlmaLinux-RPM-build.outputs.rpm}}")
        ALMA_85_SRPM=$(basename "${{ needs.AlmaLinux-RPM-build.outputs.srpm}}")
        UBI_8_RPM=$(basename "${{ needs.UBI-8-RPM-build.outputs.rpm}}")
        UBI_8_SRPM=$(basename "${{ needs.UBI-8-RPM-build.outputs.srpm}}")
        echo "ALMA_85_RPM::${ALMA_85_RPM}"
        echo "ALMA_85_SRPM::${ALMA_85_SRPM}"
        echo "UBI_8_RPM::${UBI_8_RPM}"
        echo "UBI_8_SRPM::${UBI_8_SRPM}"
        echo "::set-output name=ALMA_85_RPM::${ALMA_85_RPM}"
        echo "::set-output name=ALMA_85_SRPM::${ALMA_85_SRPM}"
        echo "::set-output name=UBI_8_RPM::${UBI_8_RPM}"
        echo "::set-output name=UBI_8_SRPM::${UBI_8_SRPM}"

    # See: https://github.com/softprops/action-gh-release
    - name: Release
      uses: softprops/action-gh-release@v1
      if: startsWith(github.ref, 'refs/tags/')
      with:
        name: cc-metric-collector-${{github.ref_name}}
        files: |
         ${{ steps.files.outputs.ALMA_85_RPM }}
         ${{ steps.files.outputs.ALMA_85_SRPM }}
         ${{ steps.files.outputs.UBI_8_RPM }}
         ${{ steps.files.outputs.UBI_8_SRPM }}