import Foundation

class RNAsyncStorage {
  private static let RCTStorageDirectory = "RCTAsyncLocalStorage_V1"

  private static let RCTManifestFileName = "manifest.json"

  private static func getStorageDirectory() -> URL? {
    return FileManager.default
      .urls(
        for: .documentDirectory,
        in: .userDomainMask
      )
      .first?
      .appendingPathComponent(RCTStorageDirectory)
  }

  private static func getManifestFilePath() -> URL? {
    return getStorageDirectory()?.appendingPathComponent(RCTManifestFileName)
  }

  static func getString() -> String? {
    guard
      let manifestFilePath = getManifestFilePath(),
      let result = try? String(contentsOf: manifestFilePath, encoding: .utf8)
      else {
        return nil
    }

    return result
  }
}