package net.minecraft.world.level.levelgen;

import net.minecraft.core.BlockPos;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.server.level.ServerPlayer;
import net.minecraft.stats.ServerStatsCounter;
import net.minecraft.stats.Stats;
import net.minecraft.util.Mth;
import net.minecraft.util.RandomSource;
import net.minecraft.world.DifficultyInstance;
import net.minecraft.world.entity.EntityType;
import net.minecraft.world.entity.MobSpawnType;
import net.minecraft.world.entity.SpawnGroupData;
import net.minecraft.world.entity.monster.Phantom;
import net.minecraft.world.level.CustomSpawner;
import net.minecraft.world.level.GameRules;
import net.minecraft.world.level.NaturalSpawner;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.level.material.FluidState;

public class PhantomSpawner implements CustomSpawner {
	private int nextTick;

	@Override
	public int tick(ServerLevel level, boolean spawnEnemies, boolean spawnFriendlies) {
		if (!spawnEnemies) {
			return 0;
		} else if (!level.getGameRules().getBoolean(GameRules.RULE_DOINSOMNIA)) {
			return 0;
		} else {
			RandomSource randomSource = level.random;
			this.nextTick--;
			if (this.nextTick > 0) {
				return 0;
			} else {
				this.nextTick = this.nextTick + (60 + randomSource.nextInt(60)) * 20;
				if (level.getSkyDarken() < 5 && level.dimensionType().hasSkyLight()) {
					return 0;
				} else {
					int i = 0;

					for (ServerPlayer serverPlayer : level.players()) {
						if (!serverPlayer.isSpectator()) {
							BlockPos blockPos = serverPlayer.blockPosition();
							if (!level.dimensionType().hasSkyLight() || blockPos.getY() >= level.getSeaLevel() && level.canSeeSky(blockPos)) {
								DifficultyInstance difficultyInstance = level.getCurrentDifficultyAt(blockPos);
								if (difficultyInstance.isHarderThan(randomSource.nextFloat() * 3.0F)) {
									ServerStatsCounter serverStatsCounter = serverPlayer.getStats();
									int j = Mth.clamp(serverStatsCounter.getValue(Stats.CUSTOM.get(Stats.TIME_SINCE_REST)), 1, Integer.MAX_VALUE);
									int k = 24000;
									if (randomSource.nextInt(j) >= 72000) {
										BlockPos blockPos2 = blockPos.above(20 + randomSource.nextInt(15)).east(-10 + randomSource.nextInt(21)).south(-10 + randomSource.nextInt(21));
										BlockState blockState = level.getBlockState(blockPos2);
										FluidState fluidState = level.getFluidState(blockPos2);
										if (NaturalSpawner.isValidEmptySpawnBlock(level, blockPos2, blockState, fluidState, EntityType.PHANTOM)) {
											SpawnGroupData spawnGroupData = null;
											int l = 1 + randomSource.nextInt(difficultyInstance.getDifficulty().getId() + 1);

											for (int m = 0; m < l; m++) {
												Phantom phantom = EntityType.PHANTOM.create(level);
												if (phantom != null) {
													phantom.moveTo(blockPos2, 0.0F, 0.0F);
													spawnGroupData = phantom.finalizeSpawn(level, difficultyInstance, MobSpawnType.NATURAL, spawnGroupData);
													level.addFreshEntityWithPassengers(phantom);
													i++;
												}
											}
										}
									}
								}
							}
						}
					}

					return i;
				}
			}
		}
	}
}