Swift4JSON.swift

/*
{
    "name": "Archie",
    "email": "[email protected]",
    "status: "Active",
    "updated_time": "2017-09-20T00:00:00Z"
}
*/

enum UserStatus: String, Codable {
    case active = "Active"
    case disable = "Disable:"
}

struct User: Codable {
    var name: String
    var email: String
    var status: UserStatus
    var updatedTime: Date
    
    // if keys need to replace by others
    enum CodingKeys : String, CodingKey {
          case name
          case email 
          case status 
          case updatedTime = "updated_time"
    }
}

// encoder
let encoder = JSONEncoder()

// set date encoding strategy to iso8601
// default is TimeInterval
encoder.dateEncodingStrategy = .iso8601

// user convert to data
let data = try! encoder.encode(user)

// decoder
let decoder = JSONDecoder()

// data convert to user
let user = try! decoder.decode(User.self, from: data)