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.EntitySpawnReason;
import net.minecraft.world.entity.EntityType;
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 void tick(ServerLevel p_64576_, boolean p_64577_, boolean p_64578_) {
        if (p_64577_) {
            if (p_64576_.getGameRules().getBoolean(GameRules.RULE_DOINSOMNIA)) {
                RandomSource randomsource = p_64576_.random;
                this.nextTick--;
                if (this.nextTick <= 0) {
                    this.nextTick = this.nextTick + (60 + randomsource.nextInt(60)) * 20;
                    if (p_64576_.getSkyDarken() >= 5 || !p_64576_.dimensionType().hasSkyLight()) {
                        for (ServerPlayer serverplayer : p_64576_.players()) {
                            if (!serverplayer.isSpectator()) {
                                BlockPos blockpos = serverplayer.blockPosition();
                                if (!p_64576_.dimensionType().hasSkyLight() || blockpos.getY() >= p_64576_.getSeaLevel() && p_64576_.canSeeSky(blockpos)) {
                                    DifficultyInstance difficultyinstance = p_64576_.getCurrentDifficultyAt(blockpos);
                                    if (difficultyinstance.isHarderThan(randomsource.nextFloat() * 3.0F)) {
                                        ServerStatsCounter serverstatscounter = serverplayer.getStats();
                                        int i = Mth.clamp(serverstatscounter.getValue(Stats.CUSTOM.get(Stats.TIME_SINCE_REST)), 1, Integer.MAX_VALUE);
                                        int j = 24000;
                                        if (randomsource.nextInt(i) >= 72000) {
                                            BlockPos blockpos1 = blockpos.above(20 + randomsource.nextInt(15))
                                                .east(-10 + randomsource.nextInt(21))
                                                .south(-10 + randomsource.nextInt(21));
                                            BlockState blockstate = p_64576_.getBlockState(blockpos1);
                                            FluidState fluidstate = p_64576_.getFluidState(blockpos1);
                                            if (NaturalSpawner.isValidEmptySpawnBlock(p_64576_, blockpos1, blockstate, fluidstate, EntityType.PHANTOM)) {
                                                SpawnGroupData spawngroupdata = null;
                                                int k = 1 + randomsource.nextInt(difficultyinstance.getDifficulty().getId() + 1);

                                                for (int l = 0; l < k; l++) {
                                                    Phantom phantom = EntityType.PHANTOM.create(p_64576_, EntitySpawnReason.NATURAL);
                                                    if (phantom != null) {
                                                        phantom.snapTo(blockpos1, 0.0F, 0.0F);
                                                        spawngroupdata = phantom.finalizeSpawn(
                                                            p_64576_, difficultyinstance, EntitySpawnReason.NATURAL, spawngroupdata
                                                        );
                                                        p_64576_.addFreshEntityWithPassengers(phantom);
                                                    }
                                                }
                                            }
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}