package net.shadowfacts.phycon.block.terminal

import net.minecraft.item.ItemStack
import net.minecraft.util.Identifier
import net.shadowfacts.cacao.util.KeyModifiers
import net.shadowfacts.cacao.util.texture.Texture
import net.shadowfacts.cacao.view.Label
import net.shadowfacts.cacao.view.TextureView
import net.shadowfacts.cacao.view.button.Button
import net.shadowfacts.cacao.view.textfield.NumberField
import net.shadowfacts.cacao.viewcontroller.ViewController
import net.shadowfacts.kiwidsl.dsl
import net.shadowfacts.phycon.PhysicalConnectivity
import org.lwjgl.glfw.GLFW
import kotlin.math.ceil
import kotlin.math.floor

/**
 * @author shadowfacts
 */
class TerminalRequestAmountViewController(
	val screen: AbstractTerminalScreen<*, *>,
	val stack: ItemStack,
): ViewController() {

	companion object {
		private val BACKGROUND = Texture(Identifier(PhysicalConnectivity.MODID, "textures/gui/terminal_amount.png"), 0, 0)
	}

	lateinit var field: NumberField
		private set

	override fun viewDidLoad() {
		super.viewDidLoad()

		val pane = view.addLayoutGuide()
		view.solver.dsl {
			pane.widthAnchor equalTo 158
			pane.heightAnchor equalTo 62
			pane.centerXAnchor equalTo view.centerXAnchor
			pane.centerYAnchor equalTo view.centerYAnchor
		}

		val background = view.addSubview(TextureView(BACKGROUND)).apply {
			zIndex = -1.0
		}

		field = view.addSubview(AmountField(this)).apply {
			drawBackground = false
		}
		field.becomeFirstResponder()

		val requestLabel = Label("Request", shadow = true)
		val request = view.addSubview(Button(requestLabel) {
			doRequest()
		})

		val plusOneLabel = Label("+1", shadow = true)
		val plusOne = view.addSubview(Button(plusOneLabel) {
			field.number = (field.number ?: 1) + 1
		})
		val plusTenLabel = Label("+10", shadow = true)
		val plusTen = view.addSubview(Button(plusTenLabel) {
			val old = field.number ?: 1
			field.number = ceil((old + 1) / 10.0).toInt() * 10
		})
		val plusHundredLabel = Label("+100", shadow = true)
		val plusHundred = view.addSubview(Button(plusHundredLabel) {
			val old = field.number ?: 1
			field.number = ceil((old + 1) / 100.0).toInt() * 100
		})

		val minusOneLabel = Label("-1", shadow = true)
		val minusOne = view.addSubview(Button(minusOneLabel) {
			field.number = (field.number ?: 1) - 1
		})
		val minusTenLabel = Label("-10", shadow = true)
		val minusTen = view.addSubview(Button(minusTenLabel) {
			val old = field.number ?: 1
			field.number = floor((old - 1) / 10.0).toInt() * 10
		})
		val minusHundredLabel = Label("-100", shadow = true)
		val minusHundred = view.addSubview(Button(minusHundredLabel) {
			val old = field.number ?: 1
			field.number = floor((old - 1) / 100.0).toInt() * 100
		})

		view.solver.dsl {
			background.leftAnchor equalTo pane.leftAnchor
			background.rightAnchor equalTo pane.rightAnchor
			background.topAnchor equalTo pane.topAnchor
			background.bottomAnchor equalTo pane.bottomAnchor

			field.leftAnchor equalTo (pane.leftAnchor + 8)
			field.topAnchor equalTo (pane.topAnchor + 27)
			field.widthAnchor equalTo 80
			field.heightAnchor equalTo 9

			request.leftAnchor equalTo (pane.leftAnchor + 101)
			request.centerYAnchor equalTo field.centerYAnchor
			request.widthAnchor equalTo 50
			request.heightAnchor equalTo 20

			plusOne.leftAnchor equalTo (pane.leftAnchor + 7)
			plusTen.leftAnchor equalTo (plusOne.rightAnchor + 3)
			plusHundred.leftAnchor equalTo (plusTen.rightAnchor + 3)
			plusHundred.rightAnchor equalTo (pane.leftAnchor + 97)
			plusOne.widthAnchor equalTo plusTen.widthAnchor
			plusOne.widthAnchor equalTo plusHundred.widthAnchor

			plusOne.topAnchor equalTo (pane.topAnchor + 7)
			plusTen.topAnchor equalTo (pane.topAnchor + 7)
			plusHundred.topAnchor equalTo (pane.topAnchor + 7)
			plusOne.heightAnchor equalTo 14
			plusTen.heightAnchor equalTo 14
			plusHundred.heightAnchor equalTo 14

			minusOne.leftAnchor equalTo (pane.leftAnchor + 7)
			minusTen.leftAnchor equalTo (minusOne.rightAnchor + 3)
			minusHundred.leftAnchor equalTo (minusTen.rightAnchor + 3)
			minusHundred.rightAnchor equalTo (pane.leftAnchor + 97)
			minusOne.widthAnchor equalTo minusTen.widthAnchor
			minusOne.widthAnchor equalTo minusHundred.widthAnchor

			minusOne.topAnchor equalTo (pane.topAnchor + 41)
			minusTen.topAnchor equalTo (pane.topAnchor + 41)
			minusHundred.topAnchor equalTo (pane.topAnchor + 41)
			minusOne.heightAnchor equalTo 14
			minusTen.heightAnchor equalTo 14
			minusHundred.heightAnchor equalTo 14
		}
	}

	private fun doRequest() {
		screen.requestItem(stack, field.number ?: 1)
		window!!.removeFromScreen()
		screen.amountVC = null
	}

	class AmountField(val vc: TerminalRequestAmountViewController): NumberField(1) {
		override fun keyPressed(keyCode: Int, modifiers: KeyModifiers): Boolean {
			return if (keyCode == GLFW.GLFW_KEY_ENTER) {
				vc.doRequest()
				true
			} else {
				super.keyPressed(keyCode, modifiers)
			}
		}
	}

}