Date Extension for Swift iOS

Date Extension Swift

//MARK:-  DATE

extension Date {
    
    
    func toSString_ServerFormat() -> String {

        let dateFormatter = DateFormatter()
        dateFormatter.timeZone = .current
        dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss"
        let str = dateFormatter.string(from: self)
        return str
    }
    
    /// Returns the amount of days from another date
    func days() -> Int {
        return Calendar.current.dateComponents([.day], from: self, to: Date() ).day ?? 0
    }
    
    
    
        func adding(seconds: Int) -> Date {
            return Calendar.current.date(byAdding: .second, value: seconds, to: self)!
        }
    
    
    func adding(minutes: Int) -> Date {
        return Calendar.current.date(byAdding: .minute, value: minutes, to: self)!
    }

    func adding(hours: Int) -> Date {
        return Calendar.current.date(byAdding: .hour, value: hours, to: self)!
    }
    
    func adding(days: Int) -> Date {
        return Calendar.current.date(byAdding: .day, value: days, to: self)!
    }
    
    func adding(months: Int) -> Date {
        return Calendar.current.date(byAdding: .month, value: months, to: self)!
    }
    
    func adding(years: Int) -> Date {
        return Calendar.current.date(byAdding: .year, value: years, to: self)!
    }
    
    
    
    
    
    func minusSeconds(from date: Date) -> Int {
        return Calendar.current.dateComponents([.second], from: date, to: self).second ?? 0
        }
    
    
    
    
    
    struct Formatter {
        static let iso8601: DateFormatter = {
            let formatter = DateFormatter()
            formatter.calendar = Calendar(identifier: .iso8601)
            formatter.locale = Locale(identifier: "en_PK")  // en_US_POSIX
            
            formatter.timeZone = TimeZone(secondsFromGMT: 0)

            formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXXX"
            return formatter
        }()
    }

    var iso8601: String {
        return Formatter.iso8601.string(from: self)
    }

    
    

        static func -(recent: Date, previous: Date) -> (month: Int?, day: Int?, hour: Int?, minute: Int?, second: Int?) {
            let day = Calendar.current.dateComponents([.day], from: previous, to: recent).day
            let month = Calendar.current.dateComponents([.month], from: previous, to: recent).month
            let hour = Calendar.current.dateComponents([.hour], from: previous, to: recent).hour
            let minute = Calendar.current.dateComponents([.minute], from: previous, to: recent).minute
            let second = Calendar.current.dateComponents([.second], from: previous, to: recent).second

            return (month: month, day: day, hour: hour, minute: minute, second: second)
        }

    }