snap.yml

name: Pebble snap

on:
  pull_request:
    branches: [master]
  release:
    types: [published]

env:
  SNAP_NAME: pebble

jobs:
  build:
    runs-on: ubuntu-latest
    outputs:
      pebble-snap: ${{ steps.build-pebble-snap.outputs.snap }}

    steps:
      - name: Checkout Pebble repo
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

      - name: Build Pebble Snap
        id: build-pebble-snap
        uses: snapcore/action-build@v1

      - name: Attach pebble snap to GH workflow execution
        uses: actions/upload-artifact@v2
        with:
          name: ${{ steps.build-pebble-snap.outputs.snap }}
          path: ${{ steps.build-pebble-snap.outputs.snap }}

  test:
    runs-on: ubuntu-latest
    needs: [build]
    outputs:
      pebble-version: ${{ steps.install-pebble.outputs.version }}

    steps:
      - uses: actions/download-artifact@v3
        with:
          name: ${{ needs.build.outputs.pebble-snap }}

      - name: Install the Pebble snap
        id: install-pebble
        run: |
          set -ex
          # Install the Pebble snap from the artifact built in the previous job
          sudo snap install --dangerous --classic ${{ needs.build.outputs.pebble-snap }}

          # Make sure Pebble is installed
          echo "version=$(pebble version --client)" >> "$GITHUB_OUTPUT"

      - name: Run smoke test
        run: pebble enter --create-dirs exec echo Hello | grep Hello

  promote:
    if: ${{ github.event_name == 'release' }}
    runs-on: ubuntu-latest
    needs: [test]
    strategy:
      fail-fast: false
      matrix:
        arch: [amd64, arm64, ppc64el, armhf, s390x]
    env:
      TRACK: latest
      DEFAULT_RISK: edge
      TO_RISK: candidate
    steps:
      - name: Install Snapcraft
        run: sudo snap install snapcraft --classic
      
      - name: Wait for ${{ needs.test.outputs.pebble-version }} to be released
        env:
          SNAPCRAFT_STORE_CREDENTIALS: ${{ secrets.SNAPCRAFT_STORE_CREDENTIALS }}
        run: |
          while ! `snapcraft status ${{ env.SNAP_NAME }} --track ${{ env.TRACK }} --arch ${{ matrix.arch }} \
              | grep "${{ env.DEFAULT_RISK }}" \
              | awk -F' ' '{print $2}' \
              | grep -Fxq "${{ needs.test.outputs.pebble-version }}"`; do
            echo "[${{ matrix.arch }}] Waiting for ${{ needs.test.outputs.pebble-version }} \
          to be released to ${{ env.TRACK }}/${{ env.DEFAULT_RISK }}..."
            sleep 10
          done

      # It would be easier to use `snapcraft promote`, but there's an error when trying
      # to avoid the prompt with the "--yes" option: 
      # > 'latest/edge' is not a valid set value for --from-channel when using --yes.
      - name: Promote ${{ needs.test.outputs.pebble-version }} (${{ matrix.arch }}) to ${{ env.TO_RISK }}
        env:
          SNAPCRAFT_STORE_CREDENTIALS: ${{ secrets.SNAPCRAFT_STORE_CREDENTIALS }}
        run: |
          revision="$(snapcraft status ${{ env.SNAP_NAME }} \
            --track ${{ env.TRACK }} --arch ${{ matrix.arch }} \
            | grep "${{ env.DEFAULT_RISK }}" | awk -F' ' '{print $3}')"

          snapcraft release ${{ env.SNAP_NAME }} \
            $revision \
            ${{ env.TRACK }}/${{ env.TO_RISK }}