clean-up-cache.yml

name: Cleanup Caches by Branch
on:
  pull_request:
    types:
      - closed

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

jobs:
  cleanup:
    runs-on: ubuntu-latest
    steps:
      - name: Check out code
        uses: actions/checkout@v4
      - name: Setup GitHub CLI
        run: |
          # Ensure the latest version of GitHub CLI is installed
          sudo apt-get update && sudo apt-get install -y gh
          # Install the actions-cache extension
          gh extension install actions/gh-actions-cache || echo "Extension already installed"

      - name: Check Token Permissions
        run: gh auth status
        env:
          GH_TOKEN: ${{ secrets.PAT_TOKEN || secrets.GITHUB_TOKEN }}
          
      - name: Cleanup Caches
        run: |
          REPO=${{ github.repository }}
          # Adjust branch reference if necessary
          BRANCH="refs/pull/${{ github.event.pull_request.number }}/merge"

          echo "Fetching list of cache keys for branch: $BRANCH"
          cacheKeysForPR=$(gh actions-cache list -R $REPO -B $BRANCH --json key | jq -r '.[].key')

          if [ -z "$cacheKeysForPR" ]; then
            echo "No caches found for branch: $BRANCH"
            exit 0
          fi

          echo "Deleting caches..."
          for cacheKey in $cacheKeysForPR; do
            echo "Deleting cache: $cacheKey"
            gh actions-cache delete $cacheKey -R $REPO -B $BRANCH --confirm
          done
          echo "Cleanup completed."
        env:
          GH_TOKEN: ${{ secrets.PAT_TOKEN || secrets.GITHUB_TOKEN }}

      - name: Verify Remaining Caches
        run: |
          echo "Checking for remaining caches in branch: $BRANCH"
          remainingCaches=$(gh actions-cache list -R ${{ github.repository }} -B $BRANCH --json key | jq -r '.[].key')

          if [ -z "$remainingCaches" ]; then
            echo "All caches successfully cleared."
          else
            echo "Remaining caches detected:"
            echo "$remainingCaches"
            exit 1
          fi
        env:
          GH_TOKEN: ${{ secrets.PAT_TOKEN || secrets.GITHUB_TOKEN }}