JSON+Extension.swift

extension String {
  func toArray() throws -> [Any] {
    guard let stringData = data(using: .utf16, allowLossyConversion: false) else { return [] }
    guard let array = try JSONSerialization.jsonObject(with: stringData, options: .mutableContainers) as? [Any] else {
      throw JSONError.notArray
    }
    
    return array
  }
  
  func toDictionary() throws -> [String: Any] {
    guard let binData = data(using: .utf16, allowLossyConversion: false) else { return [:] }
    guard let json = try JSONSerialization.jsonObject(with: binData, options: .allowFragments) as? [String: Any] else {
      throw JSONError.notNSDictionary
    }
    
    return json
  }
  
  func urlEncode() -> String? {
    return addingPercentEncoding(withAllowedCharacters: .allowedURLCharacterSet)
  }
}