package net.shadowfacts.asmr.ui

import net.shadowfacts.asmr.program.ProgramBlock
import net.shadowfacts.cacao.geometry.Point
import net.shadowfacts.cacao.util.Color
import net.shadowfacts.cacao.util.MouseButton
import net.shadowfacts.cacao.view.Label
import net.shadowfacts.cacao.view.View
import net.shadowfacts.kiwidsl.dsl
import no.birkett.kiwi.Constraint

/**
 * @author shadowfacts
 */
class ProgramBlockView(val block: ProgramBlock): View() {

	var xConstraint: Constraint? = null
	var yConstraint: Constraint? = null

	override fun wasAdded() {
		super.wasAdded()

		respondsToDragging = true

		backgroundColor = Color.BLACK
		zIndex = 5.0

		val title = addSubview(Label(block.javaClass.simpleName))

		solver.dsl {
			widthAnchor equalTo (title.widthAnchor + 8)
			heightAnchor equalTo (title.heightAnchor + 8)
			title.centerXAnchor equalTo centerXAnchor
			title.centerYAnchor equalTo centerYAnchor
		}

		updateDraggingConstraints()
	}

	override fun mouseDragged(startPoint: Point, delta: Point, mouseButton: MouseButton): Boolean {
		block.position += delta
		updateDraggingConstraints()
		return true
	}

	private fun updateDraggingConstraints() {
		if (xConstraint != null) solver.removeConstraint(xConstraint)
		if (yConstraint != null) solver.removeConstraint(yConstraint)
		solver.dsl {
			xConstraint = (leftAnchor equalTo superview!!.leftAnchor + block.position.x)
			yConstraint = (topAnchor equalTo superview!!.topAnchor + block.position.y)
		}
		window!!.layout()
	}

}