package net.shadowfacts.phycon.client.model

import com.mojang.datafixers.util.Pair
import net.fabricmc.fabric.api.renderer.v1.RendererAccess
import net.fabricmc.fabric.api.renderer.v1.mesh.Mesh
import net.fabricmc.fabric.api.renderer.v1.mesh.MutableQuadView
import net.fabricmc.fabric.api.renderer.v1.mesh.QuadEmitter
import net.fabricmc.fabric.api.renderer.v1.model.FabricBakedModel
import net.fabricmc.fabric.api.renderer.v1.render.RenderContext
import net.minecraft.block.BlockState
import net.minecraft.client.render.model.*
import net.minecraft.client.texture.Sprite
import net.minecraft.client.texture.SpriteAtlasTexture
import net.minecraft.client.util.SpriteIdentifier
import net.minecraft.item.ItemStack
import net.minecraft.util.Identifier
import net.minecraft.util.math.BlockPos
import net.minecraft.util.math.Direction
import net.minecraft.world.BlockRenderView
import net.shadowfacts.phycon.PhysicalConnectivity
import net.shadowfacts.phycon.PhysicalConnectivityClient
import net.shadowfacts.phycon.block.terminal.AbstractTerminalBlock
import java.util.Random
import java.util.function.Function
import java.util.function.Supplier

/**
 * @author shadowfacts
 */
object TerminalModel: UnbakedModel, BakedModel, FabricBakedModel {

	private val TERMINAL = SpriteIdentifier(SpriteAtlasTexture.BLOCK_ATLAS_TEXTURE, Identifier(PhysicalConnectivity.MODID, "block/terminal"))
	private val CASING = SpriteIdentifier(SpriteAtlasTexture.BLOCK_ATLAS_TEXTURE, Identifier(PhysicalConnectivity.MODID, "block/casing"))

	private lateinit var meshes: Array<Mesh>
	private lateinit var terminalSprite: Sprite

	override fun getModelDependencies(): Collection<Identifier> {
		return listOf()
	}

	override fun getTextureDependencies(
		unbakedModelGetter: Function<Identifier, UnbakedModel>,
		unresolvedTextureDependencies: MutableSet<Pair<String, String>>
	): Collection<SpriteIdentifier> {
		return listOf(TERMINAL, CASING)
	}

	override fun bake(
		loader: ModelLoader,
		textureGetter: Function<SpriteIdentifier, Sprite>,
		rotationContainer: ModelBakeSettings,
		modelId: Identifier
	): BakedModel {

		terminalSprite = textureGetter.apply(TERMINAL)
		val casingSprite = textureGetter.apply(CASING)

		val renderer = RendererAccess.INSTANCE.renderer!!

		meshes = Array(6) { i ->
			val facing = Direction.values()[i]

			val builder = renderer.meshBuilder()
			val emitter = builder.emitter

			for (dir in Direction.values()) {
				if (dir == facing) {
					emitter.square(facing, 0f, 0f, 1f, 1f, QuadEmitter.CULL_FACE_EPSILON * 10)
					emitter.spriteBake(0, terminalSprite, MutableQuadView.BAKE_LOCK_UV)
					emitter.spriteColor(0, -1, -1, -1, -1)
					emitter.emit()

					emitter.material(PhysicalConnectivityClient.screenMaterial)
					emitter.square(facing, 3/16f, 2/16f, 13/16f, 3/16f, 0f)
					emitter.spriteBake(0, terminalSprite, MutableQuadView.BAKE_LOCK_UV)
					emitter.spriteColor(0, -1, -1, -1, -1)
					emitter.emit()

					emitter.material(PhysicalConnectivityClient.screenMaterial)
					emitter.square(facing, 2/16f, 3/16f, 14/16f, 13/16f, 0f)
					emitter.spriteBake(0, terminalSprite, MutableQuadView.BAKE_LOCK_UV)
					emitter.spriteColor(0, -1, -1, -1, -1)
					emitter.emit()

					emitter.material(PhysicalConnectivityClient.screenMaterial)
					emitter.square(facing, 3/16f, 13/16f, 13/16f, 14/16f, 0f)
					emitter.spriteBake(0, terminalSprite, MutableQuadView.BAKE_LOCK_UV)
					emitter.spriteColor(0, -1, -1, -1, -1)
					emitter.emit()
				} else {
					emitter.square(dir, 0f, 0f, 1f, 1f, 0f)
					emitter.spriteBake(0, casingSprite, MutableQuadView.BAKE_LOCK_UV)
					emitter.spriteColor(0, -1, -1, -1, -1)
					emitter.emit()
				}
			}

			builder.build()
		}


		return this
	}

	override fun isVanillaAdapter() = false

	override fun emitBlockQuads(
		blockView: BlockRenderView,
		state: BlockState,
		pos: BlockPos,
		randomSupplier: Supplier<Random>,
		context: RenderContext
	) {
		val mesh = meshes[state[AbstractTerminalBlock.FACING].ordinal]
		context.meshConsumer().accept(mesh)
	}

	override fun emitItemQuads(stack: ItemStack, randomSupplier: Supplier<Random>, context: RenderContext) {
	}

	override fun getQuads(state: BlockState?, face: Direction?, random: Random) = null

	override fun useAmbientOcclusion() = true

	override fun hasDepth() = false

	override fun isSideLit() = false

	override fun isBuiltin() = false

	override fun getSprite() = terminalSprite

	override fun getTransformation() = null

	override fun getOverrides() = null
}