name: Publish Canary Image

# Revert to https://github.com/actions-runner-controller/releases#releases
# for details on why we use this approach
on:
  push:
    branches:
      - master
    paths-ignore:
      - '**.md'
      - '.github/actions/**'
      - '.github/ISSUE_TEMPLATE/**'
      - '.github/workflows/e2e-test-dispatch-workflow.yaml'
      - '.github/workflows/e2e-test-linux-vm.yaml'
      - '.github/workflows/publish-arc.yaml'
      - '.github/workflows/publish-chart.yaml'
      - '.github/workflows/publish-runner-scale-set.yaml'
      - '.github/workflows/release-runners.yaml'
      - '.github/workflows/run-codeql.yaml'
      - '.github/workflows/run-first-interaction.yaml'
      - '.github/workflows/run-stale.yaml'
      - '.github/workflows/update-runners.yaml'
      - '.github/workflows/validate-arc.yaml'
      - '.github/workflows/validate-chart.yaml'
      - '.github/workflows/validate-gha-chart.yaml'
      - '.github/workflows/validate-runners.yaml'
      - '.github/dependabot.yml'
      - '.github/RELEASE_NOTE_TEMPLATE.md'
      - 'runner/**'
      - '.gitignore'
      - 'PROJECT'
      - 'LICENSE'
      - 'Makefile'

# https://docs.github.com/en/rest/overview/permissions-required-for-github-apps
permissions:
  contents: read
  packages: write

env:
  # Safeguard to prevent pushing images to registeries after build
  PUSH_TO_REGISTRIES: true

jobs:
  legacy-canary-build:
    name: Build and Publish Legacy Canary Image
    runs-on: ubuntu-latest
    env:
      DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
      TARGET_ORG: actions-runner-controller
      TARGET_REPO: actions-runner-controller
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Get Token
        id: get_workflow_token
        uses: peter-murray/workflow-application-token-action@8e1ba3bf1619726336414f1014e37f17fbadf1db
        with:
          application_id: ${{ secrets.ACTIONS_ACCESS_APP_ID }}
          application_private_key: ${{ secrets.ACTIONS_ACCESS_PK }}
          organization: ${{ env.TARGET_ORG }}

      - name: Trigger Build And Push Images To Registries
        run: |
          # Authenticate
          gh auth login --with-token <<< ${{ steps.get_workflow_token.outputs.token }}

          # Trigger the workflow run
          jq -n '{"event_type": "canary", "client_payload": {"sha": "${{ github.sha }}", "push_to_registries": ${{ env.PUSH_TO_REGISTRIES }}}}' \
            | gh api -X POST /repos/actions-runner-controller/releases/dispatches --input -

      - name: Job summary
        run: |
          echo "The [publish-canary](https://github.com/actions-runner-controller/releases/blob/main/.github/workflows/publish-canary.yaml) workflow has been triggered!" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Parameters:**" >> $GITHUB_STEP_SUMMARY
          echo "- sha: ${{ github.sha }}" >> $GITHUB_STEP_SUMMARY
          echo "- Push to registries: ${{ env.PUSH_TO_REGISTRIES }}" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Status:**" >> $GITHUB_STEP_SUMMARY
          echo "[https://github.com/actions-runner-controller/releases/actions/workflows/publish-canary.yaml](https://github.com/actions-runner-controller/releases/actions/workflows/publish-canary.yaml)" >> $GITHUB_STEP_SUMMARY

  canary-build:
    name: Build and Publish gha-runner-scale-set-controller Canary Image
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Normalization is needed because upper case characters are not allowed in the repository name
      # and the short sha is needed for image tagging
      - name: Resolve parameters 
        id: resolve_parameters
        run: |
          echo "INFO: Resolving short sha"
          echo "short_sha=$(git rev-parse --short ${{ github.ref }})" >> $GITHUB_OUTPUT
          echo "INFO: Normalizing repository name (lowercase)"
          echo "repository_owner=$(echo ${{ github.repository_owner }} | tr '[:upper:]' '[:lower:]')" >> $GITHUB_OUTPUT
      
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
        with:
          version: latest

      # Unstable builds - run at your own risk
      - name: Build and Push
        uses: docker/build-push-action@v3
        with:
          context: .
          file: ./Dockerfile
          platforms: linux/amd64,linux/arm64
          build-args: VERSION=canary-"${{ github.ref }}"
          push: ${{ env.PUSH_TO_REGISTRIES }}
          tags: |
            ghcr.io/${{ steps.resolve_parameters.outputs.repository_owner }}/gha-runner-scale-set-controller:canary
            ghcr.io/${{ steps.resolve_parameters.outputs.repository_owner }}/gha-runner-scale-set-controller:canary-${{ steps.resolve_parameters.outputs.short_sha }}
          cache-from: type=gha
          cache-to: type=gha,mode=max