name: Build the boxes

"on":
  workflow_dispatch:
  release:
    types:
      - published
      - prereleased
  pull_request:

jobs:
  collect:
    name: Discover distros
    runs-on: ubuntu-22.04
    outputs:
      distros: ${{ steps.distros.outputs.distros }}
      build: ${{ steps.time.outputs.time }}
    steps:
      - uses: actions/checkout@v3
      - name: Discover boxes
        id: distros
        run: |-
          set -eo pipefail
          distros=$(ls distros/*.hcl{,.sh} | jq -cRs 'split("\n") | [ .[] | if length > 0 then . else empty end ]')
          echo "::set-output name=distros::${distros}"
      - name: Find timestamp for versioning
        id: time
        uses: nanzm/get-time-action@v1.1
        with:
          format: 'YYYY.MM.DD.HH'

  build:
    name: Build box
    runs-on: ${{ matrix.builder == 'virtualbox-iso.amd64' && 'macOS-12' || 'ubuntu-22.04' }}
    needs:
      - collect
    strategy:
      fail-fast: false
      matrix:
        builder:
          - virtualbox-iso.amd64
          - qemu.amd64
        distro: ${{ fromJson( needs.collect.outputs.distros ) }}
        needs_timeout:
          - distros/ubuntu-20.04-x86_64.pkrvars.hcl
    steps:
      - name: Checkout project
        uses: actions/checkout@v3
        with:
          submodules: recursive
      - name: Setup system dependnecies
        uses: ./.github/actions/setup
        with:
          ansible: true
      - name: Install Packer and related tools
        uses: ./.github/actions/install_packer
      - name: Clear disk space
        uses: greg-hellings/make-space@main
      - name: Modify build timeouts, if necessary
        if: contains(matrix.needs_timeout, matrix.distro)
        shell: bash
        run: ./modify_timeout.sh "${{ matrix.distro }}"
      - name: Run generator, if necessary
        if: endsWith(matrix.distro, '.sh')
        run: "${{ matrix.distro }}"
      - name: Build
        shell: bash
        run: |
          set -e
          # Strip .sh if it is a dynamic one
          file="$(printf "${{ matrix.distro }}" | sed -E -e 's/^(.*).sh$/\1/')"
          # Add a retry in case something bogus like a network failure happens
          packer build -only="${{ matrix.builder }}" -var-file="${file}" -var "qemu_accelerator=tcg" -var "build=${{ needs.collect.outputs.build }}" ${{ github.event_name != 'release' && '-except=upload' || '' }} sources
        env:
          VAGRANT_CLOUD_TOKEN: ${{ secrets.VAGRANT_CLOUD_TOKEN }}
          PACKER_LOG: ${{ contains(matrix.needs_timeout, matrix.distro) && '0' || '0' }}
      - name: Upload artifact
        if: ${{ failure() }}
        uses: actions/upload-artifact@v3
        with:
          name: serial-output
          path: serial-output*