const Split = class {
	constructor(state = false, velocity = 1, temperature = 23, mode='TURBO'){
		this.state = state
		this.velocity = velocity
		this.temperature = temperature
		this.swing = false
	}

	onPower(){
		this.state = !this.state
	}

	changeTemperature(newValue) {
		if (this.state){
		if (this.temperature + newValue < 30 &&
						this.temperature + newValue > 16){
				this.temperature += newValue
				return true
			}
			return false
		}
	}

	upVelocity(){
		if ( this.velocity < 3 ){
			this.velocity++
		}
	}

	downVelocity(){
		if ( this.velocity > 1 ){
			this.velocity--
		}
	}

	pw_swing(){
		this.swing = !this.swing
	}

	display(){
		return `Split { state: ${this.state}, velocity: ${this.velocity}, temperature: ${this.temperature}, swing: ${this.swing} }`
	}

}

foo = new Split()
console.log(foo)
foo.onPower()
console.log(foo)
foo.changeTemperature(3)
console.log(foo)
foo.pw_swing()
console.log(foo)
foo.upVelocity()
foo.upVelocity()
console.log(foo)
foo.downVelocity()
console.log(foo)