cleanup_caches.yml

name: Cleanup caches by a branch

on:
  pull_request:
    types:
      - closed
  pull_request_target:
    types:
      - closed
    paths:
      - "**/*"
      - "!.github/**" # Important: Exclude PRs related to .github from auto-run
      - "!.github/workflows/**" # Important: Exclude PRs related to .github/workflows from auto-run
      - "!.github/actions/**" # Important: Exclude PRs related to .github/actions from auto-run

permissions:
  contents: read
  packages: read
  actions: write

jobs:
  check_paths:
    uses: ./.github/workflows/check_paths.yml

  cleanup:
    name: Delete caches when PR is closed
    needs: check_paths
    if: needs.check_paths.outputs.githubfolder != 'true'
    runs-on: ubuntu-24.04

    steps:
      - name: Cleanup
        run: |
          echo "Fetching list of cache key"
          cacheKeysForPR=$(gh cache list --repo $REPO --ref $BRANCH --limit 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 cache delete $cacheKey --repo $REPO
          done
          echo "Done"
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          REPO: ${{ github.repository }}
          BRANCH: refs/pull/${{ github.event.pull_request.number }}/merge