minecraft-source/src/net/minecraft/advancements/critereon/BrewedPotionTrigger.java

package net.minecraft.advancements.critereon;

import java.util.Iterator;
import java.util.List;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
import java.util.Set;
import com.google.gson.JsonElement;
import javax.annotation.Nullable;
import net.minecraft.advancements.CriterionTriggerInstance;
import net.minecraft.server.level.ServerPlayer;
import com.google.gson.JsonSyntaxException;
import net.minecraft.core.Registry;
import net.minecraft.world.item.alchemy.Potion;
import net.minecraft.util.GsonHelper;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonObject;
import com.google.common.collect.Maps;
import net.minecraft.server.PlayerAdvancements;
import java.util.Map;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.advancements.CriterionTrigger;

public class BrewedPotionTrigger implements CriterionTrigger<TriggerInstance> {
    private static final ResourceLocation ID;
    private final Map<PlayerAdvancements, PlayerListeners> players;
    
    public BrewedPotionTrigger() {
        this.players = Maps.newHashMap();
    }
    
    @Override
    public ResourceLocation getId() {
        return BrewedPotionTrigger.ID;
    }
    
    @Override
    public void addPlayerListener(final PlayerAdvancements re, final Listener<TriggerInstance> a) {
        PlayerListeners a2 = this.players.get(re);
        if (a2 == null) {
            a2 = new PlayerListeners(re);
            this.players.put(re, a2);
        }
        a2.addListener(a);
    }
    
    @Override
    public void removePlayerListener(final PlayerAdvancements re, final Listener<TriggerInstance> a) {
        final PlayerListeners a2 = this.players.get(re);
        if (a2 != null) {
            a2.removeListener(a);
            if (a2.isEmpty()) {
                this.players.remove(re);
            }
        }
    }
    
    @Override
    public void removePlayerListeners(final PlayerAdvancements re) {
        this.players.remove(re);
    }
    
    @Override
    public TriggerInstance createInstance(final JsonObject jsonObject, final JsonDeserializationContext jsonDeserializationContext) {
        Potion bdy4 = null;
        if (jsonObject.has("potion")) {
            final ResourceLocation qv5 = new ResourceLocation(GsonHelper.getAsString(jsonObject, "potion"));
            final Object o;
            final Object obj;
            bdy4 = Registry.POTION.getOptional(qv5).<Throwable>orElseThrow(() -> {
                new JsonSyntaxException("Unknown potion '" + obj + "'");
                return o;
            });
        }
        return new TriggerInstance(bdy4);
    }
    
    public void trigger(final ServerPlayer vl, final Potion bdy) {
        final PlayerListeners a4 = this.players.get(vl.getAdvancements());
        if (a4 != null) {
            a4.trigger(bdy);
        }
    }
    
    static {
        ID = new ResourceLocation("brewed_potion");
    }
    
    public static class TriggerInstance extends AbstractCriterionTriggerInstance {
        private final Potion potion;
        
        public TriggerInstance(@Nullable final Potion bdy) {
            super(BrewedPotionTrigger.ID);
            this.potion = bdy;
        }
        
        public static TriggerInstance brewedPotion() {
            return new TriggerInstance((Potion)null);
        }
        
        public boolean matches(final Potion bdy) {
            return this.potion == null || this.potion == bdy;
        }
        
        @Override
        public JsonElement serializeToJson() {
            final JsonObject jsonObject2 = new JsonObject();
            if (this.potion != null) {
                jsonObject2.addProperty("potion", Registry.POTION.getKey(this.potion).toString());
            }
            return jsonObject2;
        }
    }
    
    static class PlayerListeners {
        private final PlayerAdvancements player;
        private final Set<Listener<TriggerInstance>> listeners;
        
        public PlayerListeners(final PlayerAdvancements re) {
            this.listeners = Sets.newHashSet();
            this.player = re;
        }
        
        public boolean isEmpty() {
            return this.listeners.isEmpty();
        }
        
        public void addListener(final Listener<TriggerInstance> a) {
            this.listeners.add(a);
        }
        
        public void removeListener(final Listener<TriggerInstance> a) {
            this.listeners.remove(a);
        }
        
        public void trigger(final Potion bdy) {
            List<Listener<TriggerInstance>> list3 = null;
            for (final Listener<TriggerInstance> a5 : this.listeners) {
                if (a5.getTriggerInstance().matches(bdy)) {
                    if (list3 == null) {
                        list3 = Lists.newArrayList();
                    }
                    list3.add(a5);
                }
            }
            if (list3 != null) {
                for (final Listener<TriggerInstance> a5 : list3) {
                    a5.run(this.player);
                }
            }
        }
    }
}