name: VIB
on: # rebuild any PRs and main branch changes
  pull_request_target:
    types:
      - opened
      - reopened
      - synchronize
      - labeled
    branches:
      - main
      - bitnami:main
env:
  CSP_API_URL: https://console.cloud.vmware.com
  CSP_API_TOKEN: ${{ secrets.CSP_API_TOKEN }}
  VIB_PUBLIC_URL: https://cp.bromelia.vmware.com
jobs:
  get-container:
    runs-on: ubuntu-latest
    name: Get modified containers
    outputs:
      container: ${{ steps.get-container.outputs.container }}
      result: ${{ steps.get-container.outputs.result }}
      flavors: ${{ steps.get-container.outputs.flavors }}
    steps:
      - id: get-container
        name: Get modified containers
        run: |
          # Using the Github API to detect the files changed as git merge-base stops working when the branch is behind
          # and jitterbit/get-changed-files does not support pull_request_target
          URL="https://api.github.com/repos/${{ github.repository }}/pulls/${{ github.event.pull_request.number }}/files"
          files_changed_data=$(curl -s --header 'authorization: Bearer ${{ secrets.GITHUB_TOKEN }}' -X GET -G "$URL")
          files_changed="$(echo $files_changed_data | jq -r '.[] | .filename')"
          # Adding || true to avoid "Process exited with code 1" errors
          containers_dirs_changed="$(echo "$files_changed" | xargs dirname | grep -o "containers/[^/]*" | sort | uniq || true)"
          flavors=($(echo "$files_changed" | xargs dirname | grep -o "containers/.*/.*/[^/]*" | sort | uniq || true))
          flavors_json=$(printf "%s\n" "${flavors[@]}" | jq -R . | jq -cs .)
          # Using grep -c as a better alternative to wc -l when dealing with empty strings."
          num_containers_changed="$(echo "$containers_dirs_changed" | grep -c "containers" || true)"

          if [[ "$num_containers_changed" -eq "1" ]]; then
            # Changes done in only one container -> OK
            container_name=$(echo "$containers_dirs_changed" | sed "s|containers/||g")
            echo "::set-output name=result::ok"
            echo "::set-output name=container::${container_name}"
            echo "::set-output name=flavors::${flavors_json}"
          elif [[ "$num_containers_changed" -le "0" ]]; then
            # Changes done in the containers/ folder but not inside a container subfolder -> SKIP
            echo "::set-output name=error::No changes detected in containers. The rest of the tests will be skipped."
            echo "::set-output name=result::skip"
          else
            # Changes done in more than container -> SKIP
            echo -e "::set-output name=error::Changes detected in more than one container directory:\n${containers_dirs_changed}\nIt is strongly advised to change only one container in a PR. The rest of the tests will be skipped."
            echo "::set-output name=result::skip"
          fi
      # Using actions/github-scripts because using exit 1 in the script above would not provide any output
      # Source: https://github.community/t/no-output-on-process-completed-with-exit-code-1/123821/3
      - id: show-error
        name: Show error
        if: ${{ steps.get-container.outputs.result == 'fail' }}
        uses: actions/github-script@v3
        with:
          script: |
              core.setFailed('${{ steps.get-container.outputs.error }}')
  vib-verify:
    runs-on: ubuntu-latest
    needs: get-container
    if: ${{ needs.get-container.outputs.result == 'ok' && contains(github.event.pull_request.labels.*.name, 'verify') }}
    name: Verify
    strategy:
      fail-fast: false
      matrix:
        flavor:  ${{ fromJSON(needs.get-container.outputs.flavors) }}
    steps:
      - uses: actions/checkout@v2
        name: Checkout Repository
        with:
          ref: ${{ github.event.pull_request.head.ref }}
          repository: ${{ github.event.pull_request.head.repo.full_name }}
      - uses: vmware-labs/vmware-image-builder-action@main
        name: Verify ${{ needs.get-container.outputs.container }}
        with:
          pipeline: vib-verify.json
        env:
          # Path with docker resources
          VIB_ENV_PATH: ${{ matrix.flavor }}
          # Container name
          VIB_ENV_CONTAINER: ${{ needs.get-container.outputs.container }}
          # TODO: Retrieve version
          VIB_ENV_TAG: latest