package mods.betterfoliage.client.integration

import mods.betterfoliage.BetterFoliageMod
import mods.betterfoliage.client.Client
import mods.betterfoliage.client.config.Config
import mods.betterfoliage.client.render.*
import mods.betterfoliage.client.texture.ILeafRegistry
import mods.betterfoliage.client.texture.LeafInfo
import mods.betterfoliage.client.texture.LeafRegistry
import mods.betterfoliage.loader.Refs
import mods.octarinecore.client.resource.ModelProcessor
import mods.octarinecore.client.resource.ModelVariant
import mods.octarinecore.client.resource.registerSprite
import mods.octarinecore.getTileEntitySafe
import mods.octarinecore.isBlockLoaded
import mods.octarinecore.metaprog.ClassRef
import mods.octarinecore.metaprog.FieldRef
import mods.octarinecore.metaprog.MethodRef
import mods.octarinecore.metaprog.allAvailable
import mods.octarinecore.tryDefault
import net.minecraft.block.state.IBlockState
import net.minecraft.client.Minecraft
import net.minecraft.client.renderer.block.model.ModelResourceLocation
import net.minecraft.client.renderer.texture.TextureMap
import net.minecraft.util.EnumFacing
import net.minecraft.util.ResourceLocation
import net.minecraft.util.math.BlockPos
import net.minecraft.world.IBlockAccess
import net.minecraftforge.client.event.TextureStitchEvent
import net.minecraftforge.client.model.IModel
import net.minecraftforge.common.MinecraftForge
import net.minecraftforge.fml.common.Loader
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent
import net.minecraftforge.fml.relauncher.Side
import net.minecraftforge.fml.relauncher.SideOnly
import org.apache.logging.log4j.Level


@SideOnly(Side.CLIENT)
object ForestryIntegration {

    val TextureLeaves = ClassRef("forestry.arboriculture.models.TextureLeaves")
    val TeLleafTextures = FieldRef(TextureLeaves, "leafTextures", Refs.Map)
    val TeLplain = FieldRef(TextureLeaves, "plain", Refs.ResourceLocation)
    val TeLfancy = FieldRef(TextureLeaves, "fancy", Refs.ResourceLocation)
    val TeLpollplain = FieldRef(TextureLeaves, "pollinatedPlain", Refs.ResourceLocation)
    val TeLpollfancy = FieldRef(TextureLeaves, "pollinatedFancy", Refs.ResourceLocation)
    val TileLeaves = ClassRef("forestry.arboriculture.tiles.TileLeaves")
    val TiLgetLeaveSprite = MethodRef(TileLeaves, "getLeaveSprite", Refs.ResourceLocation, ClassRef.boolean)

    val PropertyWoodType = ClassRef("forestry.arboriculture.blocks.PropertyWoodType")
    val IWoodType = ClassRef("forestry.api.arboriculture.IWoodType")
    val barkTex = MethodRef(IWoodType, "getBarkTexture", Refs.String)
    val heartTex = MethodRef(IWoodType, "getHeartTexture", Refs.String)

    val PropertyTreeType = ClassRef("forestry.arboriculture.blocks.PropertyTreeType")
    val TreeDefinition = ClassRef("forestry.arboriculture.genetics.TreeDefinition")
    val IAlleleTreeSpecies = ClassRef("forestry.api.arboriculture.IAlleleTreeSpecies")
    val ILeafSpriteProvider = ClassRef("forestry.api.arboriculture.ILeafSpriteProvider")
    val TdSpecies = FieldRef(TreeDefinition, "species", IAlleleTreeSpecies)
    val getLeafSpriteProvider = MethodRef(IAlleleTreeSpecies, "getLeafSpriteProvider", ILeafSpriteProvider)
    val getSprite = MethodRef(ILeafSpriteProvider, "getSprite", Refs.ResourceLocation, ClassRef.boolean, ClassRef.boolean)

    init {
        if (Loader.isModLoaded("forestry") && allAvailable(TiLgetLeaveSprite, getLeafSpriteProvider, getSprite)) {
            Client.log(Level.INFO, "Forestry support initialized")
            LeafRegistry.subRegistries.add(ForestryLeavesSupport)
            LogRegistry.subRegistries.add(ForestryLogSupport)
        }
    }
}

@SideOnly(Side.CLIENT)
object ForestryLeavesSupport : ILeafRegistry {

    val textureToValue = mutableMapOf<ResourceLocation, LeafInfo>()

    init { MinecraftForge.EVENT_BUS.register(this) }

    @SubscribeEvent
    fun handlePreStitch(event: TextureStitchEvent.Pre) {
        textureToValue.clear()
        val allLeaves = ForestryIntegration.TeLleafTextures.getStatic() as Map<*, *>
        allLeaves.entries.forEach {
            Client.logDetail("ForestryLeavesSupport: base leaf type ${it.key.toString()}")
            listOf(
                ForestryIntegration.TeLplain.get(it.value) as ResourceLocation,
                ForestryIntegration.TeLfancy.get(it.value) as ResourceLocation,
                ForestryIntegration.TeLpollplain.get(it.value) as ResourceLocation,
                ForestryIntegration.TeLpollfancy.get(it.value) as ResourceLocation
            ).forEach { leafLocation ->
                registerLeaf(leafLocation, event.map)
            }
        }
    }

    fun registerLeaf(textureLocation: ResourceLocation, atlas: TextureMap) {
        val texture = atlas.registerSprite(textureLocation)
        val leafType = LeafRegistry.typeMappings.getType(texture) ?: "default"
        Client.logDetail("ForestryLeavesSupport:        texture ${texture.iconName}")
        Client.logDetail("ForestryLeavesSupport:        particle $leafType")
        val generated = atlas.registerSprite(
            Client.genLeaves.generatedResource(texture.iconName, "type" to leafType)
        )
        textureToValue[textureLocation] = LeafInfo(generated, LeafRegistry.getParticleType(texture, atlas))
    }

    override fun get(state: IBlockState, rand: Int) = null

    override fun get(state: IBlockState, world: IBlockAccess, pos: BlockPos, face: EnumFacing, rand: Int): LeafInfo? {
        // check variant property (used in decorative leaves)
        state.properties.entries.find {
            ForestryIntegration.PropertyTreeType.isInstance(it.key) && ForestryIntegration.TreeDefinition.isInstance(it.value)
        } ?.let {
            val species = ForestryIntegration.TdSpecies.get(it.value)
            val spriteProvider = ForestryIntegration.getLeafSpriteProvider.invoke(species!!)
            val textureLoc = ForestryIntegration.getSprite.invoke(spriteProvider!!, false, Minecraft.isFancyGraphicsEnabled())
            return textureToValue[textureLoc]
        }

        // extract leaf texture information from TileEntity
        val tile = world.getTileEntitySafe(pos) ?: return null
        if (!ForestryIntegration.TileLeaves.isInstance(tile)) return null
        val textureLoc = ForestryIntegration.TiLgetLeaveSprite.invoke(tile, Minecraft.isFancyGraphicsEnabled()) ?: return null
        return textureToValue[textureLoc]
    }
}

@SideOnly(Side.CLIENT)
object ForestryLogSupport : ModelProcessor<List<String>, IColumnTextureInfo>, IColumnRegistry {

    override var variants = mutableMapOf<IBlockState, MutableList<ModelVariant>>()
    override var variantToKey = mutableMapOf<ModelVariant, List<String>>()
    override var variantToValue = mapOf<ModelVariant, IColumnTextureInfo>()

    override val logger = BetterFoliageMod.logDetail

    init { MinecraftForge.EVENT_BUS.register(this) }

    override fun processModelLoad(state: IBlockState, modelLoc: ModelResourceLocation, model: IModel) {
        // respect class list to avoid triggering on fences, stairs, etc.
        if (!Config.blocks.logClasses.matchesClass(state.block)) return

        // find wood type property
        val woodType = state.properties.entries.find {
            ForestryIntegration.PropertyWoodType.isInstance(it.key) && ForestryIntegration.IWoodType.isInstance(it.value)
        } ?: return

        logger.log(Level.DEBUG, "ForestryLogSupport: block state ${state.toString()}")
        logger.log(Level.DEBUG, "ForestryLogSupport:     variant ${woodType.value.toString()}")

        // get texture names for wood type
        val bark = ForestryIntegration.barkTex.invoke(woodType.value) as String?
        val heart = ForestryIntegration.heartTex.invoke(woodType.value) as String?

        logger.log(Level.DEBUG, "ForestryLogSupport:    textures [heart=$heart, bark=$bark]")
        if (bark != null && heart != null) putKeySingle(state, listOf(heart, bark))
    }

    override fun processStitch(variant: ModelVariant, key: List<String>, atlas: TextureMap): IColumnTextureInfo? {
        val heart = atlas.registerSprite(key[0])
        val bark = atlas.registerSprite(key[1])
        return StaticColumnInfo(StandardLogSupport.getAxis(variant.state), heart, heart, listOf(bark))
    }

    override fun get(state: IBlockState, rand: Int) = variants[state]?.let { variantToValue[it[0]] }
}