name: disk-prune
on:
  workflow_dispatch:
jobs:
  prune:
    runs-on: nixos
    steps:
      - name: prune gitea dumps, keep newest 2
        run: |
          set +e
          /run/current-system/sw/bin/docker run --rm -v /mnt/appdata:/a ubuntu:24.04 bash -c '
            cd /a/gitea/dump || exit 1
            echo "== before: file count"; ls -1 | wc -l
            echo "== oldest"; ls -t | tail -1
            echo "== newest"; ls -t | head -1
            echo "== total"; du -sh /a/gitea/dump
            echo "== newest 3 sizes"; for f in $(ls -t | head -3); do du -sh "$f"; done
            echo "== deleting all but newest 2"
            ls -t | tail -n +3 | tr "\n" "\0" | xargs -0 -r rm -rf --
            echo "== after: file count"; ls -1 | wc -l
            echo "== after total"; du -sh /a/gitea/dump
            echo "== df"; df -h /a
          '