enum class CacheFlag {
  SAVE_TO_DB,
  SAVE_TO_FILE
}

interface CacheInteractor {
  fun cacheItem(item: Any, cacheFlag: CacheFlag, key: String)
  fun resetItem(key: String)
  fun getItem(key: String): Any
}

class CacheInterctorImpl(dbHelper: DbHelper, fileHelper: FileHelper, cacheHelper: CacheHelper) : CacheInteractor {
  override fun cacheItem(item: Any, cacheFlag: CacheFlag, key: String) {
    when(cacheFlag) {
      SAVE_TO_DB -> {dbHelper.saveItem(item, key)},
      SAVE_TO_FILE -> {fileHelper.saveItem(item, key)},
    }
    cacheHelper.log(item, cacheFlag, key)
  }

  override getItem(key: String): Any {
    when(cacheHelper.getItemPlace(key)) {
      SAVE_TO_DB -> {return dbHelper.getItem(key)},
      SAVE_TO_FILE -> {return fileHelper.getItem(key)}
    }
  }

  override resetItem(key: String) {
    when(cacheHelper.getItemPlace(key)) {
      SAVE_TO_DB -> {return dbHelper.resetItem(key)},
      SAVE_TO_FILE -> {return fileHelper.resetItem(key)}
    }
  }
}