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description: "Remove leftover or outdated assets from repository"

inputs:
  all_skins:
    description: "JSON array of all skins"
    required: true

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

        all_skins_file="/tmp/all_skins_shared.json"
        if [ ! -f "$all_skins_file" ]; then
          echo "Error: $all_skins_file not found"
          exit 1
        fi

        readarray -t skins < <(jq -r '.[]' "$all_skins_file")

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

        skins_raw=()
        skins_clean=()

        for s in "${skins[@]}"; do
          skins_raw+=("$s")
          skins_clean+=("$(sanitize_filename "$s")")
        done

        is_known_skin() {
          local name="$1"
          for i in "${!skins_raw[@]}"; do
            if [[ "$name" == "${skins_raw[$i]}" ]] || [[ "$name" == "${skins_clean[$i]}" ]]; then
              return 0
            fi
          done
          return 1
        }

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

          for f in "$root"/*; do
            [ -f "$f" ] || continue
            basename_f="$(basename "$f")"

            if printf '%s\n' "${skins_raw[@]}" | grep -Fxq -- "$basename_f"; then
              continue
            fi

            echo " → Removing unexpected root file: $f"
            rm -f -- "$f"
          done

          local folder="$root/$skin_raw"
          [ -d "$folder" ] || return

          for f in "$folder"/*; do
            [ -e "$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 ! is_known_skin "$name"; then
              echo " → Skin '$name' deleted—removing directory $dir"
              rm -rf -- "$dir" || true
            fi
          done
        done

        for idx in "${!skins_raw[@]}"; do
          skin="${skins_raw[$idx]}"
          header="${skins_clean[$idx]}"

          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="$(sanitize_filename "$raw")"
            [[ -n "$tmp" ]] && header="$tmp"
          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" "$header.webp"
          prune_dir "$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]"