Cleanup Caches by a branch.yml

# SPDX-License-Identifier: Apache-2.0
# Licensed to the Ed-Fi Alliance under one or more agreements.
# The Ed-Fi Alliance licenses this file to you under the Apache License, Version 2.0.
# See the LICENSE and NOTICES files in the project root for more information.

name: Cleanup Caches by a branch
on:
  pull_request:
    branches: [main, 'b-v*-patch*','feature-*']
    types: [ closed ]

permissions: read-all

jobs:
  cleanup:
    runs-on: ubuntu-24.04
    steps:
      - name: Check out code
        uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
      - name: Cleanup
        run: |
          gh extension install actions/gh-actions-cache
          
          REPO=${{ github.repository }}
          PULLREQUESTBRANCH="refs/pull/${{ github.event.pull_request.number }}/merge"
          cacheKeysForPR=$(gh actions-cache list -R $REPO -B $PULLREQUESTBRANCH | cut -f 1 )          
          ## Setting this to not fail the workflow while deleting cache keys. 
          set +e
          echo "Deleting caches for  PULLREQUESTBRANCH $PULLREQUESTBRANCH..."
          for cacheKey in $cacheKeysForPR
          do
              gh actions-cache delete $cacheKey -R $REPO -B $PULLREQUESTBRANCH --confirm
          done

          WORKINGBRANCH=${{ GITHUB.HEAD_REF }}         
          echo "HEAD_REF: " ${{ GITHUB.HEAD_REF }}
          echo "REF_NAME: " ${{ GITHUB.REF_NAME }}
          echo "Fetching list of cache key"
          cacheKeysForPR=$(gh actions-cache list -R $REPO -B $WORKINGBRANCH | cut -f 1 )
          set +e
          echo "Deleting caches for WORKINGBRANCH $WORKINGBRANCH..."
          for cacheKey in $cacheKeysForPR
          do
              gh actions-cache delete $cacheKey -R $REPO -B $WORKINGBRANCH --confirm
          done          
          echo "Done"
        env:
          GH_TOKEN: ${{ secrets.REPO_DISPATCH_TOKEN }}