/* global PuzzleState */

class StorageManager {
  static _key(roomCode) {
    return `ipuzzle_${roomCode}`;
  }

  static save(state) {
    try {
      localStorage.setItem(StorageManager._key(state.roomCode), JSON.stringify(state.serialize()));
    } catch (e) {
      console.warn('iPuzzle: localStorage save failed', e);
    }
  }

  static load(roomCode) {
    try {
      const raw = localStorage.getItem(StorageManager._key(roomCode));
      if (!raw) return null;
      return PuzzleState.deserialize(JSON.parse(raw));
    } catch (e) {
      console.warn('iPuzzle: localStorage load failed', e);
      return null;
    }
  }

  static remove(roomCode) {
    localStorage.removeItem(StorageManager._key(roomCode));
  }
}