package com.minelittlepony;

import com.google.common.base.MoreObjects;
import com.minelittlepony.ducks.IDownloadImageData;
import com.minelittlepony.model.PlayerModel;
import com.voxelmodpack.hdskins.DynamicTextureImage;
import com.voxelmodpack.hdskins.ThreadDownloadImageETag;
import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.texture.ITextureObject;
import net.minecraft.client.renderer.texture.TextureUtil;
import net.minecraft.client.resources.IResource;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.util.ResourceLocation;

import java.awt.image.BufferedImage;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.concurrent.atomic.AtomicInteger;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;

@Immutable
public class Pony {

    private static final AtomicInteger ponyCount = new AtomicInteger();

    private final int ponyId = ponyCount.getAndIncrement();

    private final ResourceLocation texture;
    private final IPonyData metadata;

    private final boolean smallArms;

    public Pony(ResourceLocation resource, boolean slim) {
        this.texture = resource;
        this.metadata = this.checkSkin(this.texture);
        this.smallArms = slim;
    }

    private IPonyData checkSkin(ResourceLocation textureResourceLocation) {
        IPonyData data = checkPonyMeta(textureResourceLocation);
        if (data != null) return data;

        BufferedImage skinImage = this.getBufferedImage(textureResourceLocation);
        return this.checkSkin(skinImage);
    }

    @Nullable
    private IPonyData checkPonyMeta(ResourceLocation location) {
        try {
            IResource res = Minecraft.getMinecraft().getResourceManager().getResource(location);
            if (res.hasMetadata()) {
                PonyData data = res.getMetadata(PonyDataSerialzier.NAME);
                if (data != null) {
                    return data;
                }
            }
        } catch (FileNotFoundException e) {
            // Ignore uploaded texture
        } catch (IOException e) {
            MineLittlePony.logger.warn("Unable to read {} metadata", location, e);
        }
        return null;
    }

    @Nullable
    private BufferedImage getBufferedImage(@Nonnull ResourceLocation resource) {
        try {
            IResource skin = Minecraft.getMinecraft().getResourceManager().getResource(resource);
            BufferedImage skinImage = TextureUtil.readBufferedImage(skin.getInputStream());
            MineLittlePony.logger.debug("Obtained skin from resource location {}", resource);

            return skinImage;
        } catch (IOException ignored) { }

        try {
            ITextureObject e2 = Minecraft.getMinecraft().getTextureManager().getTexture(resource);

            if (e2 instanceof IDownloadImageData) {
                return ((IDownloadImageData) e2).getBufferedImage();
            } else if (e2 instanceof ThreadDownloadImageETag) {
                return ((ThreadDownloadImageETag) e2).getBufferedImage();
            } else if (e2 instanceof DynamicTextureImage) {
                return ((DynamicTextureImage) e2).getImage();
            }
        } catch (Exception ignored) { }

        return null;
    }

    private IPonyData checkSkin(BufferedImage bufferedimage) {
        if (bufferedimage == null) return new PonyData();
        MineLittlePony.logger.debug("\tStart skin check for pony #{} with image {}.", this.ponyId, bufferedimage);
        return PonyData.parse(bufferedimage);
    }

    public boolean isPegasusFlying(EntityPlayer player) {
        //noinspection SimplifiableIfStatement
        if (!getRace(false).hasWings()) return false;

        return player.capabilities.isFlying || !(player.onGround || player.isRiding() || player.isOnLadder() || player.isInWater() || player.isElytraFlying());
    }

    public PlayerModel getModel(boolean ignorePony) {
        return getRace(ignorePony).getModel().getModel(smallArms);
    }

    public PonyRace getRace(boolean ignorePony) {
        return metadata.getRace().getEffectiveRace(MineLittlePony.getConfig().getPonyLevel(ignorePony));
    }

    public ResourceLocation getTexture() {
        return texture;
    }

    public IPonyData getMetadata() {
        return metadata;
    }

    @Override
    public String toString() {
        return MoreObjects.toStringHelper(this).add("texture", texture).add("metadata", metadata).toString();
    }
}