package at.hannibal2.skyhanni.utils

import net.minecraft.client.Minecraft
import net.minecraft.client.gui.Gui
import net.minecraft.client.renderer.GlStateManager
import net.minecraft.client.renderer.Tessellator
import net.minecraft.client.renderer.vertex.DefaultVertexFormats
import net.minecraft.inventory.Slot
import net.minecraft.util.AxisAlignedBB
import net.minecraft.util.MathHelper
import net.minecraft.util.ResourceLocation
import net.minecraft.util.Vec3
import net.minecraftforge.client.event.RenderWorldLastEvent
import org.lwjgl.opengl.GL11
import java.awt.Color
import kotlin.math.cos
import kotlin.math.sin
import kotlin.math.sqrt

object RenderUtils {

    val beaconBeam = ResourceLocation("textures/entity/beacon_beam.png")

    infix fun Slot.highlight(color: LorenzColor) {
        highlight(color.toColor())
    }

    infix fun Slot.highlight(color: Color) {
        GlStateManager.pushMatrix()
        GlStateManager.translate(0f, 0f, 110 + Minecraft.getMinecraft().renderItem.zLevel)
        Gui.drawRect(
            this.xDisplayPosition,
            this.yDisplayPosition,
            this.xDisplayPosition + 16,
            this.yDisplayPosition + 16,
            color.rgb
        )
        GlStateManager.popMatrix()
    }

    fun RenderWorldLastEvent.drawColor(location: LorenzVec, color: LorenzColor, beacon: Boolean = false) {
        val (viewerX, viewerY, viewerZ) = getViewerPos(partialTicks)
        val x = location.x - viewerX
        val y = location.y - viewerY
        val z = location.z - viewerZ
        val distSq = x * x + y * y + z * z
        GlStateManager.disableDepth()
        GlStateManager.disableCull()
        drawFilledBoundingBox(
            AxisAlignedBB(x, y, z, x + 1, y + 1, z + 1).expandBlock(),
            color.toColor(),
            (0.1f + 0.005f * distSq.toFloat()).coerceAtLeast(0.2f)
        )
        GlStateManager.disableTexture2D()
        if (distSq > 5 * 5 && beacon) renderBeaconBeam(x, y + 1, z, color.toColor().rgb, 1.0f, partialTicks)
        GlStateManager.disableLighting()
        GlStateManager.enableTexture2D()
        GlStateManager.enableDepth()
        GlStateManager.enableCull()
    }


    fun getViewerPos(partialTicks: Float): LorenzVec {
        val viewer = Minecraft.getMinecraft().renderViewEntity
        val viewerX = viewer.lastTickPosX + (viewer.posX - viewer.lastTickPosX) * partialTicks
        val viewerY = viewer.lastTickPosY + (viewer.posY - viewer.lastTickPosY) * partialTicks
        val viewerZ = viewer.lastTickPosZ + (viewer.posZ - viewer.lastTickPosZ) * partialTicks
        return LorenzVec(viewerX, viewerY, viewerZ)
    }

    /**
     * Taken from NotEnoughUpdates under Creative Commons Attribution-NonCommercial 3.0
     * https://github.com/Moulberry/NotEnoughUpdates/blob/master/LICENSE
     * @author Moulberry
     * @author Mojang
     */
    private fun drawFilledBoundingBox(aabb: AxisAlignedBB, c: Color, alphaMultiplier: Float = 1f) {
        GlStateManager.enableBlend()
        GlStateManager.disableLighting()
        GlStateManager.tryBlendFuncSeparate(770, 771, 1, 0)
        GlStateManager.disableTexture2D()
        val tessellator = Tessellator.getInstance()
        val worldRenderer = tessellator.worldRenderer
        GlStateManager.color(c.red / 255f, c.green / 255f, c.blue / 255f, c.alpha / 255f * alphaMultiplier)

        //vertical
        worldRenderer.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION)
        worldRenderer.pos(aabb.minX, aabb.minY, aabb.minZ).endVertex()
        worldRenderer.pos(aabb.maxX, aabb.minY, aabb.minZ).endVertex()
        worldRenderer.pos(aabb.maxX, aabb.minY, aabb.maxZ).endVertex()
        worldRenderer.pos(aabb.minX, aabb.minY, aabb.maxZ).endVertex()
        tessellator.draw()
        worldRenderer.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION)
        worldRenderer.pos(aabb.minX, aabb.maxY, aabb.maxZ).endVertex()
        worldRenderer.pos(aabb.maxX, aabb.maxY, aabb.maxZ).endVertex()
        worldRenderer.pos(aabb.maxX, aabb.maxY, aabb.minZ).endVertex()
        worldRenderer.pos(aabb.minX, aabb.maxY, aabb.minZ).endVertex()
        tessellator.draw()
        GlStateManager.color(
            c.red / 255f * 0.8f,
            c.green / 255f * 0.8f,
            c.blue / 255f * 0.8f,
            c.alpha / 255f * alphaMultiplier
        )

        //x
        worldRenderer.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION)
        worldRenderer.pos(aabb.minX, aabb.minY, aabb.maxZ).endVertex()
        worldRenderer.pos(aabb.minX, aabb.maxY, aabb.maxZ).endVertex()
        worldRenderer.pos(aabb.minX, aabb.maxY, aabb.minZ).endVertex()
        worldRenderer.pos(aabb.minX, aabb.minY, aabb.minZ).endVertex()
        tessellator.draw()
        worldRenderer.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION)
        worldRenderer.pos(aabb.maxX, aabb.minY, aabb.minZ).endVertex()
        worldRenderer.pos(aabb.maxX, aabb.maxY, aabb.minZ).endVertex()
        worldRenderer.pos(aabb.maxX, aabb.maxY, aabb.maxZ).endVertex()
        worldRenderer.pos(aabb.maxX, aabb.minY, aabb.maxZ).endVertex()
        tessellator.draw()
        GlStateManager.color(
            c.red / 255f * 0.9f,
            c.green / 255f * 0.9f,
            c.blue / 255f * 0.9f,
            c.alpha / 255f * alphaMultiplier
        )
        //z
        worldRenderer.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION)
        worldRenderer.pos(aabb.minX, aabb.maxY, aabb.minZ).endVertex()
        worldRenderer.pos(aabb.maxX, aabb.maxY, aabb.minZ).endVertex()
        worldRenderer.pos(aabb.maxX, aabb.minY, aabb.minZ).endVertex()
        worldRenderer.pos(aabb.minX, aabb.minY, aabb.minZ).endVertex()
        tessellator.draw()
        worldRenderer.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION)
        worldRenderer.pos(aabb.minX, aabb.minY, aabb.maxZ).endVertex()
        worldRenderer.pos(aabb.maxX, aabb.minY, aabb.maxZ).endVertex()
        worldRenderer.pos(aabb.maxX, aabb.maxY, aabb.maxZ).endVertex()
        worldRenderer.pos(aabb.minX, aabb.maxY, aabb.maxZ).endVertex()
        tessellator.draw()
        GlStateManager.enableTexture2D()
        GlStateManager.disableBlend()
    }

    fun AxisAlignedBB.expandBlock() = expand(0.0020000000949949026, 0.0020000000949949026, 0.0020000000949949026)

    /**
     * Taken from NotEnoughUpdates under Creative Commons Attribution-NonCommercial 3.0
     * https://github.com/Moulberry/NotEnoughUpdates/blob/master/LICENSE
     * @author Moulberry
     * @author Mojang
     */
    fun renderBeaconBeam(x: Double, y: Double, z: Double, rgb: Int, alphaMultiplier: Float, partialTicks: Float) {
        val height = 300
        val bottomOffset = 0
        val topOffset = bottomOffset + height
        val tessellator = Tessellator.getInstance()
        val worldrenderer = tessellator.worldRenderer
        Minecraft.getMinecraft().textureManager.bindTexture(beaconBeam)
        GL11.glTexParameterf(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, 10497.0f)
        GL11.glTexParameterf(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_T, 10497.0f)
        GlStateManager.disableLighting()
        GlStateManager.enableCull()
        GlStateManager.enableTexture2D()
        GlStateManager.tryBlendFuncSeparate(770, 1, 1, 0)
        GlStateManager.enableBlend()
        GlStateManager.tryBlendFuncSeparate(770, 771, 1, 0)
        val time = Minecraft.getMinecraft().theWorld.totalWorldTime + partialTicks.toDouble()
        val d1 = MathHelper.func_181162_h(
            -time * 0.2 - MathHelper.floor_double(-time * 0.1)
                .toDouble()
        )
        val r = (rgb shr 16 and 0xFF) / 255f
        val g = (rgb shr 8 and 0xFF) / 255f
        val b = (rgb and 0xFF) / 255f
        val d2 = time * 0.025 * -1.5
        val d4 = 0.5 + cos(d2 + 2.356194490192345) * 0.2
        val d5 = 0.5 + sin(d2 + 2.356194490192345) * 0.2
        val d6 = 0.5 + cos(d2 + Math.PI / 4.0) * 0.2
        val d7 = 0.5 + sin(d2 + Math.PI / 4.0) * 0.2
        val d8 = 0.5 + cos(d2 + 3.9269908169872414) * 0.2
        val d9 = 0.5 + sin(d2 + 3.9269908169872414) * 0.2
        val d10 = 0.5 + cos(d2 + 5.497787143782138) * 0.2
        val d11 = 0.5 + sin(d2 + 5.497787143782138) * 0.2
        val d14 = -1.0 + d1
        val d15 = height.toDouble() * 2.5 + d14
        worldrenderer.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR)
        worldrenderer.pos(x + d4, y + topOffset, z + d5).tex(1.0, d15).color(r, g, b, 1.0f * alphaMultiplier)
            .endVertex()
        worldrenderer.pos(x + d4, y + bottomOffset, z + d5).tex(1.0, d14).color(r, g, b, 1.0f).endVertex()
        worldrenderer.pos(x + d6, y + bottomOffset, z + d7).tex(0.0, d14).color(r, g, b, 1.0f).endVertex()
        worldrenderer.pos(x + d6, y + topOffset, z + d7).tex(0.0, d15).color(r, g, b, 1.0f * alphaMultiplier)
            .endVertex()
        worldrenderer.pos(x + d10, y + topOffset, z + d11).tex(1.0, d15).color(r, g, b, 1.0f * alphaMultiplier)
            .endVertex()
        worldrenderer.pos(x + d10, y + bottomOffset, z + d11).tex(1.0, d14).color(r, g, b, 1.0f).endVertex()
        worldrenderer.pos(x + d8, y + bottomOffset, z + d9).tex(0.0, d14).color(r, g, b, 1.0f).endVertex()
        worldrenderer.pos(x + d8, y + topOffset, z + d9).tex(0.0, d15).color(r, g, b, 1.0f * alphaMultiplier)
            .endVertex()
        worldrenderer.pos(x + d6, y + topOffset, z + d7).tex(1.0, d15).color(r, g, b, 1.0f * alphaMultiplier)
            .endVertex()
        worldrenderer.pos(x + d6, y + bottomOffset, z + d7).tex(1.0, d14).color(r, g, b, 1.0f).endVertex()
        worldrenderer.pos(x + d10, y + bottomOffset, z + d11).tex(0.0, d14).color(r, g, b, 1.0f).endVertex()
        worldrenderer.pos(x + d10, y + topOffset, z + d11).tex(0.0, d15).color(r, g, b, 1.0f * alphaMultiplier)
            .endVertex()
        worldrenderer.pos(x + d8, y + topOffset, z + d9).tex(1.0, d15).color(r, g, b, 1.0f * alphaMultiplier)
            .endVertex()
        worldrenderer.pos(x + d8, y + bottomOffset, z + d9).tex(1.0, d14).color(r, g, b, 1.0f).endVertex()
        worldrenderer.pos(x + d4, y + bottomOffset, z + d5).tex(0.0, d14).color(r, g, b, 1.0f).endVertex()
        worldrenderer.pos(x + d4, y + topOffset, z + d5).tex(0.0, d15).color(r, g, b, 1.0f * alphaMultiplier)
            .endVertex()
        tessellator.draw()
        GlStateManager.disableCull()
        val d12 = -1.0 + d1
        val d13 = height + d12
        worldrenderer.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR)
        worldrenderer.pos(x + 0.2, y + topOffset, z + 0.2).tex(1.0, d13).color(r, g, b, 0.25f * alphaMultiplier)
            .endVertex()
        worldrenderer.pos(x + 0.2, y + bottomOffset, z + 0.2).tex(1.0, d12).color(r, g, b, 0.25f).endVertex()
        worldrenderer.pos(x + 0.8, y + bottomOffset, z + 0.2).tex(0.0, d12).color(r, g, b, 0.25f).endVertex()
        worldrenderer.pos(x + 0.8, y + topOffset, z + 0.2).tex(0.0, d13).color(r, g, b, 0.25f * alphaMultiplier)
            .endVertex()
        worldrenderer.pos(x + 0.8, y + topOffset, z + 0.8).tex(1.0, d13).color(r, g, b, 0.25f * alphaMultiplier)
            .endVertex()
        worldrenderer.pos(x + 0.8, y + bottomOffset, z + 0.8).tex(1.0, d12).color(r, g, b, 0.25f).endVertex()
        worldrenderer.pos(x + 0.2, y + bottomOffset, z + 0.8).tex(0.0, d12).color(r, g, b, 0.25f).endVertex()
        worldrenderer.pos(x + 0.2, y + topOffset, z + 0.8).tex(0.0, d13).color(r, g, b, 0.25f * alphaMultiplier)
            .endVertex()
        worldrenderer.pos(x + 0.8, y + topOffset, z + 0.2).tex(1.0, d13).color(r, g, b, 0.25f * alphaMultiplier)
            .endVertex()
        worldrenderer.pos(x + 0.8, y + bottomOffset, z + 0.2).tex(1.0, d12).color(r, g, b, 0.25f).endVertex()
        worldrenderer.pos(x + 0.8, y + bottomOffset, z + 0.8).tex(0.0, d12).color(r, g, b, 0.25f).endVertex()
        worldrenderer.pos(x + 0.8, y + topOffset, z + 0.8).tex(0.0, d13).color(r, g, b, 0.25f * alphaMultiplier)
            .endVertex()
        worldrenderer.pos(x + 0.2, y + topOffset, z + 0.8).tex(1.0, d13).color(r, g, b, 0.25f * alphaMultiplier)
            .endVertex()
        worldrenderer.pos(x + 0.2, y + bottomOffset, z + 0.8).tex(1.0, d12).color(r, g, b, 0.25f).endVertex()
        worldrenderer.pos(x + 0.2, y + bottomOffset, z + 0.2).tex(0.0, d12).color(r, g, b, 0.25f).endVertex()
        worldrenderer.pos(x + 0.2, y + topOffset, z + 0.2).tex(0.0, d13).color(r, g, b, 0.25f * alphaMultiplier)
            .endVertex()
        tessellator.draw()
    }

    fun RenderWorldLastEvent.drawString(location: LorenzVec, text: String, seeThroughBlocks: Boolean = false) {
        GlStateManager.alphaFunc(516, 0.1f)
        GlStateManager.pushMatrix()
        val viewer = Minecraft.getMinecraft().renderViewEntity
        val renderManager = Minecraft.getMinecraft().renderManager
        var x = location.x - renderManager.viewerPosX
        var y = location.y - renderManager.viewerPosY - viewer.eyeHeight
        var z = location.z - renderManager.viewerPosZ
        val distSq = x * x + y * y + z * z
        val dist = sqrt(distSq)
        if (distSq > 144) {
            x *= 12 / dist
            y *= 12 / dist
            z *= 12 / dist
        }

        if (seeThroughBlocks) {
            GlStateManager.disableDepth()
            GlStateManager.disableCull()
        }

        GlStateManager.translate(x, y, z)
        GlStateManager.translate(0f, viewer.eyeHeight, 0f)
        drawNametag(text)
        GlStateManager.rotate(-renderManager.playerViewY, 0.0f, 1.0f, 0.0f)
        GlStateManager.rotate(renderManager.playerViewX, 1.0f, 0.0f, 0.0f)
        GlStateManager.translate(0f, -0.25f, 0f)
        GlStateManager.rotate(-renderManager.playerViewX, 1.0f, 0.0f, 0.0f)
        GlStateManager.rotate(renderManager.playerViewY, 0.0f, 1.0f, 0.0f)
//    RenderUtil.drawNametag(EnumChatFormatting.YELLOW.toString() + dist.roundToInt() + "m")
        GlStateManager.popMatrix()
        GlStateManager.disableLighting()


        if (seeThroughBlocks) {
            GlStateManager.enableDepth()
            GlStateManager.enableCull()
        }
    }

    /**
     * @author Mojang
     */
    fun drawNametag(str: String?) {
        val fontRenderer = Minecraft.getMinecraft().fontRendererObj
        val f1 = 0.02666667f
        GlStateManager.pushMatrix()
        GL11.glNormal3f(0.0f, 1.0f, 0.0f)
        GlStateManager.rotate(-Minecraft.getMinecraft().renderManager.playerViewY, 0.0f, 1.0f, 0.0f)
        GlStateManager.rotate(
            Minecraft.getMinecraft().renderManager.playerViewX,
            1.0f,
            0.0f,
            0.0f
        )
        GlStateManager.scale(-f1, -f1, f1)
        GlStateManager.disableLighting()
        GlStateManager.depthMask(false)
        GlStateManager.enableBlend()
        GlStateManager.tryBlendFuncSeparate(770, 771, 1, 0)
        val tessellator = Tessellator.getInstance()
        val worldrenderer = tessellator.worldRenderer
        val i = 0
        val j = fontRenderer.getStringWidth(str) / 2
        GlStateManager.disableTexture2D()
        worldrenderer.begin(7, DefaultVertexFormats.POSITION_COLOR)
        worldrenderer.pos((-j - 1).toDouble(), (-1 + i).toDouble(), 0.0).color(0.0f, 0.0f, 0.0f, 0.25f).endVertex()
        worldrenderer.pos((-j - 1).toDouble(), (8 + i).toDouble(), 0.0).color(0.0f, 0.0f, 0.0f, 0.25f).endVertex()
        worldrenderer.pos((j + 1).toDouble(), (8 + i).toDouble(), 0.0).color(0.0f, 0.0f, 0.0f, 0.25f).endVertex()
        worldrenderer.pos((j + 1).toDouble(), (-1 + i).toDouble(), 0.0).color(0.0f, 0.0f, 0.0f, 0.25f).endVertex()
        tessellator.draw()
        GlStateManager.enableTexture2D()
        fontRenderer.drawString(str, -j, i, 553648127)
        GlStateManager.depthMask(true)
        fontRenderer.drawString(str, -j, i, -1)
        GlStateManager.enableBlend()
        GlStateManager.color(1.0f, 1.0f, 1.0f, 1.0f)
        GlStateManager.popMatrix()
    }

    /**
     * @author Mojang
     */
    fun drawLabel(
        pos: Vec3,
        text: String,
        color: Color,
        partialTicks: Float,
        shadow: Boolean = false,
        scale: Float = 1f
    ) {
        var mc = Minecraft.getMinecraft()
        val player = mc.thePlayer
        val x =
            pos.xCoord - player.lastTickPosX + (pos.xCoord - player.posX - (pos.xCoord - player.lastTickPosX)) * partialTicks
        val y =
            pos.yCoord - player.lastTickPosY + (pos.yCoord - player.posY - (pos.yCoord - player.lastTickPosY)) * partialTicks
        val z =
            pos.zCoord - player.lastTickPosZ + (pos.zCoord - player.posZ - (pos.zCoord - player.lastTickPosZ)) * partialTicks
        val renderManager = mc.renderManager
        val f1 = 0.0266666688
        val width = mc.fontRendererObj.getStringWidth(text) / 2
        GlStateManager.pushMatrix()
        GlStateManager.translate(x, y, z)
        GL11.glNormal3f(0f, 1f, 0f)
        GlStateManager.rotate(-renderManager.playerViewY, 0f, 1f, 0f)
        GlStateManager.rotate(renderManager.playerViewX, 1f, 0f, 0f)
        GlStateManager.scale(-f1, -f1, -f1)
        GlStateManager.scale(scale, scale, scale)
        GlStateManager.enableBlend()
        GlStateManager.disableLighting()
        GlStateManager.tryBlendFuncSeparate(770, 771, 1, 0)
        GlStateManager.enableTexture2D()
        mc.fontRendererObj.drawString(text, (-width).toFloat(), 0f, color.rgb, shadow)
        GlStateManager.disableBlend()
        GlStateManager.popMatrix()
    }

    fun interpolate(currentValue: Double, lastValue: Double, multiplier: Float): Double {
        return lastValue + (currentValue - lastValue) * multiplier
    }
}