clear_all_cache.yml

name: cleanup caches on main

# Configure Manual Trigger with workflow_dispatch
on:
  workflow_dispatch:

jobs:
  cleanup:
    runs-on: ubuntu-latest
    permissions:
      # `actions:write` permission is required to delete caches
      #   See also: https://docs.github.com/en/rest/actions/cache?apiVersion=2022-11-28#delete-a-github-actions-cache-for-a-repository-using-a-cache-id
      actions: write
      contents: read
    steps:
      - name: checkout
        uses: actions/checkout@v4

      - name: Cleanup
        run: |
          gh extension install actions/gh-actions-cache
          
          REPO=${{ github.repository }}
          printf "$REPO\n"
          BRANCH=main
          printf "$BRANCH\n"

          # loop until the list is empty, because it deletes only 30 per page
          has_items=true
          while [ "$has_items" = true ]
          do
            printf "\033[0;33m     Fetching list of cache key\n\033[0m\n"
            printf "\033[0;32m gh actions-cache list -R $REPO -B $BRANCH | cut -f 1 \n\033[0m\n"
            cache_keys=$(gh actions-cache list -R $REPO -B $BRANCH | cut -f 1 )
            # printf "$cache_keys\n"
            if [ -z "$cache_keys" ]; then 
              printf "\033[0;35m    gh actions-cache list returned nothing.\n\033[0m\n"
              has_items=false
            fi
            ## Setting this to not fail the workflow while deleting cache keys. 
            set +e
            for cacheKey in $cache_keys
            do
                # printf "\033[0;32m gh actions-cache delete $cacheKey -R $REPO -B $BRANCH --confirm\n\033[0m\n"
                gh actions-cache delete $cacheKey -R $REPO -B $BRANCH --confirm
            done
          done          
          printf "\033[0;33m    Done\n\033[0m\n"
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}