Swift @propertyWrapper for Date

BeginEndDate.swift

extension Date {
    
    func add(_ component: Calendar.Component, value: Int) -> Date {
        return Calendar.current.date(byAdding: component, value: value, to: self)!
    }
}


@propertyWrapper
struct BeginEndDate {
    
    enum `Type` {
        case begin, end
    }
    
    private var date: Date = Date()
    private var type: Type = .begin
    
    var wrappedValue: Date {
        get {
            if type == .begin {
                return Calendar.current.startOfDay(for: date)
            } else {
                var newDate = date.add(.day, value: 1)
                newDate = Calendar.current.startOfDay(for: newDate)
                newDate = newDate.add(.second, value: -1)
                return newDate
            }
        }
        set { date = newValue }
    }
    
    init(date: Date, type: Type) {
        self.date = date
        self.type = type
    }
}