name: "Cleanup Extra Files"
description: "Remove leftover or outdated assets from repository"

inputs:
  all_skins:
    description: "Newline-delimited list of all skins"
    required: true

runs:
  using: "composite"
  steps:
    - name: Cleanup Extra Files
      shell: bash
      run: |
        set -euo pipefail
        echo "[Cleanup Extra Files Started]"

        readarray -t skins <<< "${{ inputs.all_skins }}"

        [ -f how-to-use.md ] && rm -f how-to-use.md
        [ -f src/replay.osr ] && rm -f src/replay.osr
        [ -d src/default-skin ] && rm -rf src/default-skin

        sanitize_filename() {
          echo "$1" | \
            tr -d '\000-\037' | \
            sed -e 's#[\\/:\*\?"<>|]#-#g' | \
            sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//'
        }

        prune_dir() {
          local root="$1"
          local skin="$2"
          local expected="$3"

          for f in "$root"/*; do
            [ -f "$f" ] || continue
            name="$(basename "$f")"
            if printf '%s\n' "${skins[@]}" | grep -Fxq -- "$name"; then
              continue
            fi
            echo " → Removing unexpected root file: $f"
            rm -f "$f"
          done

          dir="$root/$skin"
          [ -d "$dir" ] || return
          for f in "$dir"/*; do
            [ -e "$f" ] || continue
            if [[ "$(basename "$f")" != "$expected" ]]; then
              echo " → Removing unexpected file: $f"
              rm -f "$f"
            fi
          done
        }

        for root in "$REPO_SCREENSHOT_DIR" "$REPO_RANKING_PANEL_DIR" "$REPO_MOD_ICONS_DIR" "$REPO_THUMBNAIL_DIR" "$OSK_PATH" "$DOC_DIR"; do
          [ -d "$root" ] || continue
          for dir in "$root"/*; do
            [ -d "$dir" ] || continue
            name="$(basename "$dir")"
            if ! printf '%s\n' "${skins[@]}" | grep -Fxq -- "$name"; then
              echo " → Skin '$name' deleted—removing directory $dir"
              rm -rf "$dir"
            fi
          done
        done

        for skin in "${skins[@]}"; do
          header=$(sanitize_filename "$skin")
          ini=$(find "$DANSER_SKINS_DIR/$skin" -maxdepth 1 -type f -iname "skin.ini" -print -quit || true)
          if [[ -f "$ini" ]]; then
            raw=$(grep -i '^[[:space:]]*Name:' "$ini" | head -n1 || true)
            raw="${raw#*:}"
            raw="$(echo "$raw" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')"
            tmp_header=$(sanitize_filename "$raw")
            [[ -n "$tmp_header" ]] && header="$tmp_header"
          fi

          prune_dir "$REPO_SCREENSHOT_DIR"     "$skin" "$header.mp4"
          prune_dir "$REPO_RANKING_PANEL_DIR" "$skin" "$header.webp"
          prune_dir "$REPO_MOD_ICONS_DIR"     "$skin" "$header-mod-icons.webp"
          prune_dir "$REPO_THUMBNAIL_DIR"     "$skin" "$header.webp"
          prune_dir "$OSK_PATH"               "$skin" "$header.osk"
          prune_dir "$DOC_DIR"                "$skin" "$header.md"
        done

        echo "[Cleanup Extra Files Complete]"