package fr.username404.snowygui.gui

import com.mojang.blaze3d.vertex.BufferBuilder
import com.mojang.blaze3d.vertex.PoseStack
import com.mojang.blaze3d.vertex.Tesselator
import com.mojang.blaze3d.vertex.VertexConsumer

fun interface Renderable { fun render(poseStack: PoseStack?) }
abstract class Element(
    var x: Double, var y: Double,
    val width: Int, val height: Int
): Renderable {
    companion object Rendering {
        @JvmStatic protected val tessellator: Tesselator = Tesselator.getInstance()
        @JvmStatic protected val buffer: BufferBuilder = tessellator.builder
    }
    fun display(stack: PoseStack? = null) { if (!hidden) render(stack) }
    var hidden: Boolean = false
}

abstract class ColoredElement(x: Double, y: Double, width: Int, height: Int, val color: Int, val opacity: Float) : Element(x, y, width, height) {
    companion object {
        const val TransparentColor: Int = -0x1
        @JvmStatic protected fun VertexConsumer.colorIt(color: Int, opacity: Float = 1F): VertexConsumer {
            with(hextoRGB(color)) {
                return this@colorIt.color(get(0), get(1), get(2), opacity)
            }
        }
    }
    protected fun VertexConsumer.colorEnd() = colorIt(color, opacity).endVertex()
}

fun hextoRGB(hex: Int): MutableList<Float> {
    val returnedColorList = mutableListOf<Float>()
    for (i in 2 downTo 0) {
        returnedColorList.add(
            (hex shr (i * 8) and 255) / 255.0F
        )
    }
    return returnedColorList
}