SpriteKit - Collision Off after HIT - sprite-kit

Question

I am writing a spritekit game and I have a problem, I would like the framework not to detect collisions after it is detected. For example, the player is dealt damage and becomes insensitive to attacks, e.g. for 20 seconds. Now when a collision is detected, it is detected all the time (e.g. 50 times)
Is there a way to temporarily disable collisions ??
Player code :
func createPlayer() {
var walkFrames: [SKTexture] = []
var walkFrames2: [SKTexture] = []
var walkFrames3: [SKTexture] = []
var walkFrames4: [SKTexture] = []
// let spaceShipTexture = SKTexture(imageNamed: "p2.png")
let playerAnimatedAtlas = SKTextureAtlas(named: "walk")
let playerAnimatedAtlas_idle = SKTextureAtlas(named: "idle")
let playerAnimatedAtlas_jump = SKTextureAtlas(named: "jump")
let playerAnimatedAtlas_attack = SKTextureAtlas(named: "attack")
var _: [SKTexture] = []
for i in 0...6 {
let playerTextureName = "1_entity_000_WALK_00\(i).png"
walkFrames.append(playerAnimatedAtlas.textureNamed(playerTextureName))
}
for z in 0...6 {
let playerTextureName_idle = "1_entity_000_IDLE_00\(z).png"
walkFrames2.append(playerAnimatedAtlas_idle.textureNamed(playerTextureName_idle))
}
for p in 0...6 {
let playerTextureName_jump = "1_entity_000_JUMP_00\(p).png"
walkFrames3.append(playerAnimatedAtlas_jump.textureNamed(playerTextureName_jump))
}
for k in 0...6 {
let playerTextureName_attack = "1_entity_000_ATTACK_00\(k).png"
walkFrames4.append(playerAnimatedAtlas_attack.textureNamed(playerTextureName_attack))
}
playerWalkingFrames = walkFrames
let firstFrameTexture = playerWalkingFrames[0]
player.position = CGPoint(x: -1050, y: -90 )
//player.setScale(0.090)
player.size = CGSize(width: 170, height: 120)
// player.physicsBody = SKPhysicsBody(rectangleOf:CGSize(width: 35, height: 100))
let spaceShipTexture = SKTexture(imageNamed: "p2.png")
let texturedSpaceShip = SKSpriteNode(texture: spaceShipTexture)
player.physicsBody = SKPhysicsBody(texture: spaceShipTexture , size: CGSize(width: player.size.width,
height: player.size.height));
player.physicsBody?.usesPreciseCollisionDetection = true
//player.physicsBody = SKPhysicsBody(texture: play, size: player.size)
player.physicsBody?.allowsRotation = false
player.physicsBody?.categoryBitMask = playerCategory
player.physicsBody?.collisionBitMask = enemy1Category
//player.physicsBody?.contactTestBitMask = enemy1Category
playerWalkingFrames_idle = walkFrames2
playerWalkingFrames_jump = walkFrames3
playerWalkingFrames_attack = walkFrames4
self.addChild(player)
}
collision code :
func didBegin(_ contact: SKPhysicsContact) {
let collison: UInt32 = contact.bodyA.categoryBitMask | contact.bodyB.categoryBitMask
if collison == playerCategory | enemy1Category{
print("COLLISION") }
else {
//print("Brak Kolizji" )
}
if collison == playermieczCategory | enemy1Category {
print("miecz")
}
if collison == playermieczCategory | piratkaCategory {
print("miecz_Piratka")
// health -= 0.2
// piratka.isHidden = true
}
if collison == playerCategory | piratkaCategory{
// if collison == nil {return}
player.physicsBody?.contactTestBitMask = 0
// czarny.physicsBody?.applyImpulse(CGVector(dx: 10, dy: 0))
// DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + .seconds(5)) {
// self.playerhealth -= 0.01
// print("nico")
print("HIT3")
// }
}