name: Reload Act Runner Stack to clear cache for workflows

on:
  push:
    branches: [main]

jobs:
  diff:
    uses: https://gitea.chromart.cc/martin/chromart-gitea-actions/.gitea/workflows/diff-output.yaml@main
    with:
      files: .gitea/**

  reload-primary:
    needs: diff
    if: ${{ needs.diff.outputs.is_changed == 'true' }}
    uses: https://gitea.chromart.cc/martin/chromart-gitea-actions/.gitea/workflows/gitainer-deploy.yaml@main
    with:
      stack_name: gitea_act_runner
      # the secondary runner executes the primary restart webhook
      runs_on_label: runner-secondary
      # We use a detached webhook call so primary doesn't hang if the Gitainer stack takes 5 minutes to rebuild, and it avoids bridge network drop edge cases
      delayed_silent: true
      
  wait-for-primary-death:
    needs: [diff, reload-primary]
    if: ${{ needs.diff.outputs.is_changed == 'true' }}
    runs-on: runner-secondary
    steps:
      - name: Wait for Gitainer to kill the secondary runner
        run: |
          echo "The detached webhook container sleeps for 10s before firing."
          echo "We wait 30s here to guarantee the webhook fired and Gitainer destroyed the old secondary runner."
          sleep 30
      
  reload-secondary:
    needs: [diff, wait-for-primary-death]
    if: ${{ needs.diff.outputs.is_changed == 'true' }}
    # ensuring the primary actually survived and restarted successfully
    uses: https://gitea.chromart.cc/martin/chromart-gitea-actions/.gitea/workflows/gitainer-deploy.yaml@main
    with:
      stack_name: gitea_act_runner_secondary
      # the primary runner executes the secondary restart webhook
      runs_on_label: runner-primary
      # We use a detached webhook call so primary doesn't hang if the Gitainer stack takes 5 minutes to rebuild, and it avoids bridge network drop edge cases
      delayed_silent: true

  wait-for-secondary-death:
    needs: [diff, reload-secondary]
    if: ${{ needs.diff.outputs.is_changed == 'true' }}
    runs-on: runner-primary
    steps:
      - name: Wait for Gitainer to kill the secondary runner
        run: |
          echo "The detached webhook container sleeps for 10s before firing."
          echo "We wait 30s here to guarantee the webhook fired and Gitainer destroyed the old secondary runner."
          sleep 30

  pull-cache-secondary:
    needs: [diff, wait-for-secondary-death]
    if: ${{ needs.diff.outputs.is_changed == 'true' }}
    # Because the old secondary is dead, Gitea leaves this job in the queue until the NEW secondary runner boots up.
    uses: https://gitea.chromart.cc/martin/chromart-gitea-actions/.gitea/workflows/noop.yaml@main
    with:
      runs_on_label: runner-secondary