name: 'Show Cache Folder Stats'
description: 'Display directory-level cache stats for ccache and Bazel'

runs:
  using: 'composite'
  steps:
    - name: Define cache summary helper
      shell: bash
      working-directory: ${{ github.workspace }}
      run: |
        set -euo pipefail
        cat > /tmp/cache_summary.sh <<'EOF'
        summarize_dir() {
          local path="$1"
          local top_n=${2:-10}
          local sub_n=${3:-5}
          if [ ! -e "$path" ]; then
            echo "Path $path not found"
            return
          fi
          echo "---------------"
          echo "Summary: $path"
          du -sh "$path" || true
          echo "Top ${top_n} entries at top level:"
          du -h --max-depth=1 "$path" 2>/dev/null | sort -hr | head -n "$top_n" || true
          echo "Showing up to ${sub_n} entries one level deeper for the largest top-level items:"
          while read -r line; do
            entry_path=$(echo "$line" | awk '{print $2}')
            [ -z "$entry_path" ] && continue
            if [ "$entry_path" = "$path" ]; then
              continue
            fi
            echo "-> $entry_path :"
            du -h --max-depth=1 "$entry_path" 2>/dev/null | sort -hr | head -n "$sub_n" || true
          done < <(du -h --max-depth=1 "$path" 2>/dev/null | sort -hr | head -n "$top_n")
          echo "---------------"
        }
        EOF

    - name: Show ccache folder Stats
      shell: bash
      working-directory: ${{ github.workspace }}
      run: |
        set -euo pipefail
        source /tmp/cache_summary.sh
        echo "==============="
        echo "=== .ccache ==="
        echo "==============="
        summarize_dir /home/runner/.ccache 10 5 || true

    - name: Show Bazel Cache folder Stats
      shell: bash
      working-directory: ${{ github.workspace }}
      run: |
        set -euo pipefail
        source /tmp/cache_summary.sh
        echo "===================="
        echo "=== .cache/bazel ==="
        echo "===================="
        summarize_dir /home/runner/.cache/bazel 10 5 || true