clear-cache.yml

name: Clear cache

on:
  workflow_dispatch:
  schedule:
    - cron: "*/15 2-4 * * *"
  pull_request:
    types:
      - closed

permissions:
  actions: write

jobs:
  # https://docs.github.com/en/actions/using-workflows/caching-dependencies-to-speed-up-workflows#force-deleting-cache-entries
  pr-cleanup:
    if: ${{ github.event_name == 'pull_request' && github.event.action == 'closed' }}
    runs-on: ubuntu-latest
    steps:
      - name: Closed PR Cleanup
        run: |
          gh extension install actions/gh-actions-cache

          echo "Fetching list of cache key"
          cacheKeysForPR=$(gh actions-cache list -R $REPO -B $BRANCH -L 100 | cut -f 1 )

          ## Setting this to not fail the workflow while deleting cache keys.
          set +e
          echo "Deleting caches..."
          for cacheKey in $cacheKeysForPR
          do
              gh actions-cache delete $cacheKey -R $REPO -B $BRANCH --confirm
          done
          echo "Done"
        env:
          GH_TOKEN: ${{ github.token }}
          REPO: ${{ github.repository }}
          BRANCH: refs/pull/${{ github.event.pull_request.number }}/merge

  scheduled-cleanup:
    if: ${{ github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' }}
    runs-on: ubuntu-latest
    steps:
      - name: Clear Cache
        uses: actions/github-script@v7
        with:
          script: |
            console.log("About to clear")
            const caches = await github.rest.actions.getActionsCacheList({
              owner: context.repo.owner,
              repo: context.repo.repo,
            })
            for (const cache of caches.data.actions_caches) {
              console.log(cache)
              github.rest.actions.deleteActionsCacheById({
                owner: context.repo.owner,
                repo: context.repo.repo,
                cache_id: cache.id,
              })
            }
            console.log("Clear completed")