name: Cache Cleanup
on:
  pull_request:
    types:
      - closed

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

permissions: {}

jobs:
  cleanup:
    name: Cleanup
    runs-on: ubuntu-latest
    permissions:
      contents: read
      actions: write
    steps:
      - name: Check out code
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
        with:
          persist-credentials: false

      - name: Cleanup
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          REF: ${{ github.ref }}
        run: |
          gh extension install actions/gh-actions-cache

          REPO=${{ github.repository }}

          echo "Fetching list of cache keys"
          cacheKeysForPR=$(gh actions-cache list -R $REPO -B ${REF} -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 "${REF}" --confirm
          done
          echo "Done"