JSONIntitalizable

JSONIntitalizable

protocol JSONIntitalizable {
    init?( json: [String: Any])
}
extension JSONIntitalizable where Self: Decodable{
    init?( json: [String: Any]) {
        self = (try? JSONSerialization.data(withJSONObject: json, options: []))
               .flatMap{ try? JSONDecoder().decode(Self.self, from: $0) }!
    }
}

JSONRepresentable

protocol JSONRepresentable {
  init?(json: [String: Any])
  func json() -> [String: Any]?
}

extension JSONRepresentable where Self: Codable {
  init?(json: [String:Any]) {
    guard let value = (try? JSONSerialization.data(withJSONObject: json, options: []))
      .flatMap ({ try? JSONDecoder().decode(Self.self, from: $0) }) else {
        return nil
    }
    self = value
  }
  func json() -> [String:Any]? {
    return (try? JSONEncoder().encode(self))
      .flatMap { try? JSONSerialization.jsonObject(with: $0, options: []) } as? [String: Any]

  }
}