Pinning a UIView to the Home button side of its superview in Swift 3

HomeButtonPositioning.swift

import UIKit

extension UIView {
    
    public func constraintsForPinningToHomeButton(withSpacing spacing: CGFloat = 0.0) -> [NSLayoutConstraint] {
        
        guard let superview = superview else { return [] }
        
        switch (UIDevice.current().orientation, UIApplication.shared().statusBarOrientation) {
        case (.landscapeLeft, .landscapeRight):
            let centerConstraint = centerYAnchor.constraint(equalTo: superview.centerYAnchor)
            centerConstraint.isActive = true
            centerConstraint.identifier = "View centered vertically in superview"
            
            let rightConstraint = rightAnchor.constraint(equalTo: superview.rightAnchor, constant: -spacing)
            rightConstraint.isActive = true
            rightConstraint.identifier = "View anchored to right side of superview"
            
            return [centerConstraint, rightConstraint]
            
        case (.landscapeRight, .landscapeLeft):
            let centerConstraint = centerYAnchor.constraint(equalTo: superview.centerYAnchor)
            centerConstraint.isActive = true
            centerConstraint.identifier = "Vuew centered vertically in superview"
            
            let leftConstraint = leftAnchor.constraint(equalTo: superview.leftAnchor, constant: spacing)
            leftConstraint.isActive = true
            leftConstraint.identifier = "Take Picture button anchored to right side of view"
            
            return [centerConstraint, leftConstraint]
            
        default:
            let bottomConstraint = bottomAnchor.constraint(equalTo: superview.bottomAnchor, constant: -20)
            bottomConstraint.isActive = true
            bottomConstraint.identifier = "View anchored to bottom of superview"
            
            let centerConstraint = centerXAnchor.constraint(equalTo: superview.centerXAnchor)
            centerConstraint.isActive = true
            centerConstraint.identifier = "View centered horizontally in superview"
            
            return [bottomConstraint, centerConstraint]
        }

    }
    
}