How to create a playable rectangle in SpriteKit on iPhone X - swift

Question

I'm a newbie in Swift and SpriteKit. I'm trying to develop a simple 2D game for iPhone X, so I want to draw a playable area where I can put game's sprites. The problem is that when I draw the rectangle it fits the screen width, but not the screen height.
The GameScene size is 2048x1536, with anchor point in (0.5, 0.5).
The default screen orientation is landscape.
This is what I did at the moment:
GameViewController.swift
class GameViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
if let view = self.view as! SKView? {
// Load the SKScene from 'GameScene.sks'
if let scene = SKScene(fileNamed: "GameScene") {
// Set the scale mode to scale to fit the window
scene.scaleMode = .aspectFill
// Present the scene
view.presentScene(scene)
}
view.ignoresSiblingOrder = true
view.showsFPS = true
view.showsNodeCount = true
}
}
}
GameScene.swift
class GameScene: SKScene {
override func didMove(to view: SKView) {
let rectangle = SKShapeNode(rect: self.frame)
rectangle.strokeColor = .green
rectangle.lineWidth = 20
rectangle.zPosition = 1
addChild(rectangle)
}
}
When I run this code, the rectangle green borders fit the width of the screen (in landscape), so I can see them, but the top and bottom borders are off-screen.
My purpose is to have a playable rect as high as the phone screen, and his width should be screen width - left safe area insets (to exclude the notch from the playable area).
Thank you.