package net.minecraft.world.item.alchemy;

import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.mojang.datafixers.util.Pair;
import com.mojang.serialization.Codec;
import com.mojang.serialization.codecs.RecordCodecBuilder;
import java.util.List;
import java.util.Optional;
import java.util.OptionalInt;
import java.util.function.Consumer;
import net.minecraft.ChatFormatting;
import net.minecraft.Util;
import net.minecraft.core.Holder;
import net.minecraft.core.component.DataComponentGetter;
import net.minecraft.core.component.DataComponents;
import net.minecraft.network.RegistryFriendlyByteBuf;
import net.minecraft.network.chat.CommonComponents;
import net.minecraft.network.chat.Component;
import net.minecraft.network.chat.MutableComponent;
import net.minecraft.network.codec.ByteBufCodecs;
import net.minecraft.network.codec.StreamCodec;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.util.ARGB;
import net.minecraft.world.effect.MobEffect;
import net.minecraft.world.effect.MobEffectInstance;
import net.minecraft.world.effect.MobEffectUtil;
import net.minecraft.world.entity.LivingEntity;
import net.minecraft.world.entity.ai.attributes.Attribute;
import net.minecraft.world.entity.ai.attributes.AttributeModifier;
import net.minecraft.world.entity.player.Player;
import net.minecraft.world.item.Item;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.TooltipFlag;
import net.minecraft.world.item.component.Consumable;
import net.minecraft.world.item.component.ConsumableListener;
import net.minecraft.world.item.component.ItemAttributeModifiers;
import net.minecraft.world.item.component.TooltipProvider;
import net.minecraft.world.level.Level;

public record PotionContents(Optional<Holder<Potion>> potion, Optional<Integer> customColor, List<MobEffectInstance> customEffects, Optional<String> customName)
	implements ConsumableListener,
	TooltipProvider {
	public static final PotionContents EMPTY = new PotionContents(Optional.empty(), Optional.empty(), List.of(), Optional.empty());
	private static final Component NO_EFFECT = Component.translatable("effect.none").withStyle(ChatFormatting.GRAY);
	public static final int BASE_POTION_COLOR = -13083194;
	private static final Codec<PotionContents> FULL_CODEC = RecordCodecBuilder.create(
		instance -> instance.group(
				Potion.CODEC.optionalFieldOf("potion").forGetter(PotionContents::potion),
				Codec.INT.optionalFieldOf("custom_color").forGetter(PotionContents::customColor),
				MobEffectInstance.CODEC.listOf().optionalFieldOf("custom_effects", List.of()).forGetter(PotionContents::customEffects),
				Codec.STRING.optionalFieldOf("custom_name").forGetter(PotionContents::customName)
			)
			.apply(instance, PotionContents::new)
	);
	public static final Codec<PotionContents> CODEC = Codec.withAlternative(FULL_CODEC, Potion.CODEC, PotionContents::new);
	public static final StreamCodec<RegistryFriendlyByteBuf, PotionContents> STREAM_CODEC = StreamCodec.composite(
		Potion.STREAM_CODEC.apply(ByteBufCodecs::optional),
		PotionContents::potion,
		ByteBufCodecs.INT.apply(ByteBufCodecs::optional),
		PotionContents::customColor,
		MobEffectInstance.STREAM_CODEC.apply(ByteBufCodecs.list()),
		PotionContents::customEffects,
		ByteBufCodecs.STRING_UTF8.apply(ByteBufCodecs::optional),
		PotionContents::customName,
		PotionContents::new
	);

	public PotionContents(Holder<Potion> potion) {
		this(Optional.of(potion), Optional.empty(), List.of(), Optional.empty());
	}

	public static ItemStack createItemStack(Item item, Holder<Potion> potion) {
		ItemStack itemStack = new ItemStack(item);
		itemStack.set(DataComponents.POTION_CONTENTS, new PotionContents(potion));
		return itemStack;
	}

	public boolean is(Holder<Potion> potion) {
		return this.potion.isPresent() && ((Holder)this.potion.get()).is(potion) && this.customEffects.isEmpty();
	}

	public Iterable<MobEffectInstance> getAllEffects() {
		if (this.potion.isEmpty()) {
			return this.customEffects;
		} else {
			return (Iterable<MobEffectInstance>)(this.customEffects.isEmpty()
				? ((Potion)((Holder)this.potion.get()).value()).getEffects()
				: Iterables.concat(((Potion)((Holder)this.potion.get()).value()).getEffects(), this.customEffects));
		}
	}

	public void forEachEffect(Consumer<MobEffectInstance> action, float durationScale) {
		if (this.potion.isPresent()) {
			for (MobEffectInstance mobEffectInstance : ((Potion)((Holder)this.potion.get()).value()).getEffects()) {
				action.accept(mobEffectInstance.withScaledDuration(durationScale));
			}
		}

		for (MobEffectInstance mobEffectInstance : this.customEffects) {
			action.accept(mobEffectInstance.withScaledDuration(durationScale));
		}
	}

	public PotionContents withPotion(Holder<Potion> potion) {
		return new PotionContents(Optional.of(potion), this.customColor, this.customEffects, this.customName);
	}

	public PotionContents withEffectAdded(MobEffectInstance effect) {
		return new PotionContents(this.potion, this.customColor, Util.copyAndAdd(this.customEffects, effect), this.customName);
	}

	public int getColor() {
		return this.getColorOr(-13083194);
	}

	public int getColorOr(int defaultValue) {
		return this.customColor.isPresent() ? (Integer)this.customColor.get() : getColorOptional(this.getAllEffects()).orElse(defaultValue);
	}

	public Component getName(String name) {
		String string = (String)this.customName.or(() -> this.potion.map(holder -> ((Potion)holder.value()).name())).orElse("empty");
		return Component.translatable(name + string);
	}

	public static OptionalInt getColorOptional(Iterable<MobEffectInstance> effects) {
		int i = 0;
		int j = 0;
		int k = 0;
		int l = 0;

		for (MobEffectInstance mobEffectInstance : effects) {
			if (mobEffectInstance.isVisible()) {
				int m = mobEffectInstance.getEffect().value().getColor();
				int n = mobEffectInstance.getAmplifier() + 1;
				i += n * ARGB.red(m);
				j += n * ARGB.green(m);
				k += n * ARGB.blue(m);
				l += n;
			}
		}

		return l == 0 ? OptionalInt.empty() : OptionalInt.of(ARGB.color(i / l, j / l, k / l));
	}

	public boolean hasEffects() {
		return !this.customEffects.isEmpty() ? true : this.potion.isPresent() && !((Potion)((Holder)this.potion.get()).value()).getEffects().isEmpty();
	}

	public List<MobEffectInstance> customEffects() {
		return Lists.transform(this.customEffects, MobEffectInstance::new);
	}

	public void applyToLivingEntity(LivingEntity entity, float durationScale) {
		if (entity.level() instanceof ServerLevel serverLevel) {
			Player player2 = entity instanceof Player player ? player : null;
			this.forEachEffect(mobEffectInstance -> {
				if (mobEffectInstance.getEffect().value().isInstantenous()) {
					mobEffectInstance.getEffect().value().applyInstantenousEffect(serverLevel, player2, player2, entity, mobEffectInstance.getAmplifier(), 1.0);
				} else {
					entity.addEffect(mobEffectInstance);
				}
			}, durationScale);
		}
	}

	public static void addPotionTooltip(Iterable<MobEffectInstance> effects, Consumer<Component> tooltipAdder, float durationFactor, float ticksPerSecond) {
		List<Pair<Holder<Attribute>, AttributeModifier>> list = Lists.<Pair<Holder<Attribute>, AttributeModifier>>newArrayList();
		boolean bl = true;

		for (MobEffectInstance mobEffectInstance : effects) {
			bl = false;
			Holder<MobEffect> holder = mobEffectInstance.getEffect();
			int i = mobEffectInstance.getAmplifier();
			holder.value().createModifiers(i, (holderx, attributeModifierx) -> list.add(new Pair<>(holderx, attributeModifierx)));
			MutableComponent mutableComponent = getPotionDescription(holder, i);
			if (!mobEffectInstance.endsWithin(20)) {
				mutableComponent = Component.translatable(
					"potion.withDuration", mutableComponent, MobEffectUtil.formatDuration(mobEffectInstance, durationFactor, ticksPerSecond)
				);
			}

			tooltipAdder.accept(mutableComponent.withStyle(holder.value().getCategory().getTooltipFormatting()));
		}

		if (bl) {
			tooltipAdder.accept(NO_EFFECT);
		}

		if (!list.isEmpty()) {
			tooltipAdder.accept(CommonComponents.EMPTY);
			tooltipAdder.accept(Component.translatable("potion.whenDrank").withStyle(ChatFormatting.DARK_PURPLE));

			for (Pair<Holder<Attribute>, AttributeModifier> pair : list) {
				AttributeModifier attributeModifier = pair.getSecond();
				double d = attributeModifier.amount();
				double e;
				if (attributeModifier.operation() != AttributeModifier.Operation.ADD_MULTIPLIED_BASE
					&& attributeModifier.operation() != AttributeModifier.Operation.ADD_MULTIPLIED_TOTAL) {
					e = attributeModifier.amount();
				} else {
					e = attributeModifier.amount() * 100.0;
				}

				if (d > 0.0) {
					tooltipAdder.accept(
						Component.translatable(
								"attribute.modifier.plus." + attributeModifier.operation().id(),
								ItemAttributeModifiers.ATTRIBUTE_MODIFIER_FORMAT.format(e),
								Component.translatable(pair.getFirst().value().getDescriptionId())
							)
							.withStyle(ChatFormatting.BLUE)
					);
				} else if (d < 0.0) {
					e *= -1.0;
					tooltipAdder.accept(
						Component.translatable(
								"attribute.modifier.take." + attributeModifier.operation().id(),
								ItemAttributeModifiers.ATTRIBUTE_MODIFIER_FORMAT.format(e),
								Component.translatable(pair.getFirst().value().getDescriptionId())
							)
							.withStyle(ChatFormatting.RED)
					);
				}
			}
		}
	}

	public static MutableComponent getPotionDescription(Holder<MobEffect> effect, int level) {
		MutableComponent mutableComponent = Component.translatable(effect.value().getDescriptionId());
		return level > 0 ? Component.translatable("potion.withAmplifier", mutableComponent, Component.translatable("potion.potency." + level)) : mutableComponent;
	}

	@Override
	public void onConsume(Level level, LivingEntity entity, ItemStack stack, Consumable consumable) {
		this.applyToLivingEntity(entity, stack.getOrDefault(DataComponents.POTION_DURATION_SCALE, 1.0F));
	}

	@Override
	public void addToTooltip(Item.TooltipContext context, Consumer<Component> tooltipAdder, TooltipFlag flag, DataComponentGetter componentGetter) {
		addPotionTooltip(this.getAllEffects(), tooltipAdder, componentGetter.getOrDefault(DataComponents.POTION_DURATION_SCALE, 1.0F), context.tickRate());
	}
}