Property wrappers for Date

property-wrappers-date.swift

@propertyWrapper
struct DateFormatter: Codable, Equatable {
  var dateString: String?
  private let format: String?

  var wrappedValue: Date? {
    guard let date = dateString else { return nil }
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = format
    return dateFormatter.date(from: date)
  }

  init(_ format: String) {
    self.format = format
  }
}

@propertyWrapper
struct MultiDateFormatter: Codable, Equatable {
  var dateString: String?
  private let formats: [String]?

  var wrappedValue: Date? {
    formats?.compactMap({ format in
      guard let date = dateString else { return nil }
      let dateFormatter = DateFormatter()
      dateFormatter.dateFormat = format
      return dateFormatter.date(from: date)
    }).first
  }

  init(_ formats: [String]) {
    self.formats = formats
  }
}