package net.minecraft.server;

import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonSyntaxException;
import javax.annotation.Nullable;

public class CriterionTriggerEnterBlock extends CriterionTriggerAbstract<CriterionTriggerEnterBlock.a> {

    private static final MinecraftKey a = new MinecraftKey("enter_block");

    public CriterionTriggerEnterBlock() {}

    @Override
    public MinecraftKey a() {
        return CriterionTriggerEnterBlock.a;
    }

    @Override
    public CriterionTriggerEnterBlock.a a(JsonObject jsonobject, JsonDeserializationContext jsondeserializationcontext) {
        Block block = a(jsonobject);
        CriterionTriggerProperties criteriontriggerproperties = CriterionTriggerProperties.a(jsonobject.get("state"));

        if (block != null) {
            criteriontriggerproperties.a(block.getStates(), (s) -> {
                throw new JsonSyntaxException("Block " + block + " has no property " + s);
            });
        }

        return new CriterionTriggerEnterBlock.a(block, criteriontriggerproperties);
    }

    @Nullable
    private static Block a(JsonObject jsonobject) {
        if (jsonobject.has("block")) {
            MinecraftKey minecraftkey = new MinecraftKey(ChatDeserializer.h(jsonobject, "block"));

            return (Block) IRegistry.BLOCK.getOptional(minecraftkey).orElseThrow(() -> {
                return new JsonSyntaxException("Unknown block type '" + minecraftkey + "'");
            });
        } else {
            return null;
        }
    }

    public void a(EntityPlayer entityplayer, IBlockData iblockdata) {
        this.a(entityplayer.getAdvancementData(), (criteriontriggerenterblock_a) -> {
            return criteriontriggerenterblock_a.a(iblockdata);
        });
    }

    public static class a extends CriterionInstanceAbstract {

        private final Block a;
        private final CriterionTriggerProperties b;

        public a(@Nullable Block block, CriterionTriggerProperties criteriontriggerproperties) {
            super(CriterionTriggerEnterBlock.a);
            this.a = block;
            this.b = criteriontriggerproperties;
        }

        public static CriterionTriggerEnterBlock.a a(Block block) {
            return new CriterionTriggerEnterBlock.a(block, CriterionTriggerProperties.a);
        }

        @Override
        public JsonElement b() {
            JsonObject jsonobject = new JsonObject();

            if (this.a != null) {
                jsonobject.addProperty("block", IRegistry.BLOCK.getKey(this.a).toString());
            }

            jsonobject.add("state", this.b.a());
            return jsonobject;
        }

        public boolean a(IBlockData iblockdata) {
            return this.a != null && iblockdata.getBlock() != this.a ? false : this.b.a(iblockdata);
        }
    }
}