src/Server.php

<?php
 
/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
 */
 
declare(strict_types=1);
 
namespace pocketmine;
 
use pocketmine\command\Command;
use pocketmine\command\CommandSender;
use pocketmine\command\SimpleCommandMap;
use pocketmine\console\ConsoleCommandSender;
use pocketmine\console\ConsoleReaderChildProcessDaemon;
use pocketmine\crafting\CraftingManager;
use pocketmine\crafting\CraftingManagerFromDataHelper;
use pocketmine\crash\CrashDump;
use pocketmine\crash\CrashDumpRenderer;
use pocketmine\data\bedrock\BedrockDataFiles;
use pocketmine\entity\EntityDataHelper;
use pocketmine\entity\Location;
use pocketmine\event\HandlerListManager;
use pocketmine\event\player\PlayerCreationEvent;
use pocketmine\event\player\PlayerDataSaveEvent;
use pocketmine\event\player\PlayerLoginEvent;
use pocketmine\event\server\CommandEvent;
use pocketmine\event\server\QueryRegenerateEvent;
use pocketmine\lang\KnownTranslationFactory;
use pocketmine\lang\Language;
use pocketmine\lang\LanguageNotFoundException;
use pocketmine\lang\Translatable;
use pocketmine\nbt\tag\CompoundTag;
use pocketmine\network\mcpe\auth\AuthKeyProvider;
use pocketmine\network\mcpe\compression\CompressBatchPromise;
use pocketmine\network\mcpe\compression\CompressBatchTask;
use pocketmine\network\mcpe\compression\Compressor;
use pocketmine\network\mcpe\compression\ZlibCompressor;
use pocketmine\network\mcpe\convert\TypeConverter;
use pocketmine\network\mcpe\encryption\EncryptionContext;
use pocketmine\network\mcpe\EntityEventBroadcaster;
use pocketmine\network\mcpe\NetworkSession;
use pocketmine\network\mcpe\PacketBroadcaster;
use pocketmine\network\mcpe\protocol\ProtocolInfo;
use pocketmine\network\mcpe\protocol\types\CompressionAlgorithm;
use pocketmine\network\mcpe\raklib\RakLibInterface;
use pocketmine\network\mcpe\StandardEntityEventBroadcaster;
use pocketmine\network\mcpe\StandardPacketBroadcaster;
use pocketmine\network\Network;
use pocketmine\network\NetworkInterfaceStartException;
use pocketmine\network\query\DedicatedQueryNetworkInterface;
use pocketmine\network\query\QueryHandler;
use pocketmine\network\query\QueryInfo;
use pocketmine\network\upnp\UPnPNetworkInterface;
use pocketmine\permission\BanList;
use pocketmine\permission\DefaultPermissions;
use pocketmine\player\DatFilePlayerDataProvider;
use pocketmine\player\GameMode;
use pocketmine\player\OfflinePlayer;
use pocketmine\player\Player;
use pocketmine\player\PlayerDataLoadException;
use pocketmine\player\PlayerDataProvider;
use pocketmine\player\PlayerDataSaveException;
use pocketmine\player\PlayerInfo;
use pocketmine\plugin\PharPluginLoader;
use pocketmine\plugin\PluginEnableOrder;
use pocketmine\plugin\PluginGraylist;
use pocketmine\plugin\PluginManager;
use pocketmine\plugin\PluginOwned;
use pocketmine\plugin\ScriptPluginLoader;
use pocketmine\promise\Promise;
use pocketmine\promise\PromiseResolver;
use pocketmine\resourcepacks\ResourcePackManager;
use pocketmine\scheduler\AsyncPool;
use pocketmine\scheduler\TimingsCollectionTask;
use pocketmine\scheduler\TimingsControlTask;
use pocketmine\snooze\SleeperHandler;
use pocketmine\stats\SendUsageTask;
use pocketmine\thread\log\AttachableThreadSafeLogger;
use pocketmine\thread\ThreadCrashException;
use pocketmine\thread\ThreadSafeClassLoader;
use pocketmine\timings\Timings;
use pocketmine\timings\TimingsHandler;
use pocketmine\updater\UpdateChecker;
use pocketmine\utils\AssumptionFailedError;
use pocketmine\utils\BroadcastLoggerForwarder;
use pocketmine\utils\Config;
use pocketmine\utils\Filesystem;
use pocketmine\utils\Internet;
use pocketmine\utils\MainLogger;
use pocketmine\utils\NotCloneable;
use pocketmine\utils\NotSerializable;
use pocketmine\utils\Process;
use pocketmine\utils\SignalHandler;
use pocketmine\utils\Terminal;
use pocketmine\utils\TextFormat;
use pocketmine\utils\Utils;
use pocketmine\world\format\io\WorldProviderManager;
use pocketmine\world\format\io\WritableWorldProviderManagerEntry;
use pocketmine\world\generator\Generator;
use pocketmine\world\generator\GeneratorManager;
use pocketmine\world\generator\InvalidGeneratorOptionsException;
use pocketmine\world\Position;
use pocketmine\world\World;
use pocketmine\world\WorldCreationOptions;
use pocketmine\world\WorldManager;
use pocketmine\YmlServerProperties as Yml;
use Ramsey\Uuid\UuidInterface;
use Symfony\Component\Filesystem\Path;
use function array_fill;
use function array_sum;
use function base64_encode;
use function chr;
use function cli_set_process_title;
use function copy;
use function count;
use function date;
use function fclose;
use function file_exists;
use function file_put_contents;
use function filemtime;
use function fopen;
use function get_class;
use function gettype;
use function ini_set;
use function is_array;
use function is_dir;
use function is_int;
use function is_object;
use function is_resource;
use function is_string;
use function json_decode;
use function max;
use function microtime;
use function min;
use function mkdir;
use function ob_end_flush;
use function preg_replace;
use function realpath;
use function register_shutdown_function;
use function rename;
use function round;
use function sleep;
use function spl_object_id;
use function sprintf;
use function str_repeat;
use function str_replace;
use function stripos;
use function strlen;
use function strrpos;
use function strtolower;
use function strval;
use function time;
use function touch;
use function trim;
use function yaml_parse;
use const DIRECTORY_SEPARATOR;
use const PHP_EOL;
use const PHP_INT_MAX;
 
class Server{
    use NotCloneable;
    use NotSerializable;
 
    public const BROADCAST_CHANNEL_ADMINISTRATIVE = "pocketmine.broadcast.admin";
    public const BROADCAST_CHANNEL_USERS = "pocketmine.broadcast.user";
 
    public const DEFAULT_SERVER_NAME = VersionInfo::NAME . " Server";
    public const DEFAULT_MAX_PLAYERS = 20;
    public const DEFAULT_PORT_IPV4 = 19132;
    public const DEFAULT_PORT_IPV6 = 19133;
    public const DEFAULT_MAX_VIEW_DISTANCE = 16;
 
    public const TARGET_TICKS_PER_SECOND = 20;
    public const TARGET_SECONDS_PER_TICK = 1 / self::TARGET_TICKS_PER_SECOND;
    public const TARGET_NANOSECONDS_PER_TICK = 1_000_000_000 / self::TARGET_TICKS_PER_SECOND;
 
    private const TPS_OVERLOAD_WARNING_THRESHOLD = self::TARGET_TICKS_PER_SECOND * 0.6;
 
    private const TICKS_PER_WORLD_CACHE_CLEAR = 5 * self::TARGET_TICKS_PER_SECOND;
    private const TICKS_PER_TPS_OVERLOAD_WARNING = 5 * self::TARGET_TICKS_PER_SECOND;
    private const TICKS_PER_STATS_REPORT = 300 * self::TARGET_TICKS_PER_SECOND;
 
    private const DEFAULT_ASYNC_COMPRESSION_THRESHOLD = 10_000;
 
    private static ?Server $instance = null;
 
    private TimeTrackingSleeperHandler $tickSleeper;
 
    private BanList $banByName;
 
    private BanList $banByIP;
 
    private Config $operators;
 
    private Config $whitelist;
 
    private bool $isRunning = true;
 
    private bool $hasStopped = false;
 
    private PluginManager $pluginManager;
 
    private float $profilingTickRate = self::TARGET_TICKS_PER_SECOND;
 
    private UpdateChecker $updater;
 
    private AsyncPool $asyncPool;
 
    private int $tickCounter = 0;
    private float $nextTick = 0;
    private array $tickAverage;
    private array $useAverage;
    private float $currentTPS = self::TARGET_TICKS_PER_SECOND;
    private float $currentUse = 0;
    private float $startTime;
 
    private bool $doTitleTick = true;
 
    private int $sendUsageTicker = 0;
 
    private MemoryManager $memoryManager;
 
    private ?ConsoleReaderChildProcessDaemon $console = null;
    private ?ConsoleCommandSender $consoleSender = null;
 
    private SimpleCommandMap $commandMap;
 
    private CraftingManager $craftingManager;
 
    private ResourcePackManager $resourceManager;
 
    private WorldManager $worldManager;
 
    private int $maxPlayers;
 
    private bool $onlineMode = true;
    private AuthKeyProvider $authKeyProvider;
 
    private Network $network;
    private bool $networkCompressionAsync = true;
    private int $networkCompressionAsyncThreshold = self::DEFAULT_ASYNC_COMPRESSION_THRESHOLD;
 
    private Language $language;
    private bool $forceLanguage = false;
 
    private UuidInterface $serverID;
 
    private string $dataPath;
    private string $pluginPath;
 
    private PlayerDataProvider $playerDataProvider;
 
    private array $uniquePlayers = [];
 
    private QueryInfo $queryInfo;
 
    private ServerConfigGroup $configGroup;
 
    private array $playerList = [];
 
    private SignalHandler $signalHandler;
 
    private array $broadcastSubscribers = [];
 
    public function getName() : string{
        return VersionInfo::NAME;
    }
 
    public function isRunning() : bool{
        return $this->isRunning;
    }
 
    public function getPocketMineVersion() : string{
        return VersionInfo::VERSION()->getFullVersion(true);
    }
 
    public function getVersion() : string{
        return ProtocolInfo::MINECRAFT_VERSION;
    }
 
    public function getApiVersion() : string{
        return VersionInfo::BASE_VERSION;
    }
 
    public function getFilePath() : string{
        return \pocketmine\PATH;
    }
 
    public function getResourcePath() : string{
        return \pocketmine\RESOURCE_PATH;
    }
 
    public function getDataPath() : string{
        return $this->dataPath;
    }
 
    public function getPluginPath() : string{
        return $this->pluginPath;
    }
 
    public function getMaxPlayers() : int{
        return $this->maxPlayers;
    }
 
    public function getOnlineMode() : bool{
        return $this->onlineMode;
    }
 
    public function requiresAuthentication() : bool{
        return $this->getOnlineMode();
    }
 
    public function getPort() : int{
        return $this->configGroup->getConfigInt(ServerProperties::SERVER_PORT_IPV4, self::DEFAULT_PORT_IPV4);
    }
 
    public function getPortV6() : int{
        return $this->configGroup->getConfigInt(ServerProperties::SERVER_PORT_IPV6, self::DEFAULT_PORT_IPV6);
    }
 
    public function getViewDistance() : int{
        return max(2, $this->configGroup->getConfigInt(ServerProperties::VIEW_DISTANCE, self::DEFAULT_MAX_VIEW_DISTANCE));
    }
 
    public function getAllowedViewDistance(int $distance) : int{
        return max(2, min($distance, $this->memoryManager->getViewDistance($this->getViewDistance())));
    }
 
    public function getIp() : string{
        $str = $this->configGroup->getConfigString(ServerProperties::SERVER_IPV4);
        return $str !== "" ? $str : "0.0.0.0";
    }
 
    public function getIpV6() : string{
        $str = $this->configGroup->getConfigString(ServerProperties::SERVER_IPV6);
        return $str !== "" ? $str : "::";
    }
 
    public function getServerUniqueId() : UuidInterface{
        return $this->serverID;
    }
 
    public function getGamemode() : GameMode{
        return GameMode::fromString($this->configGroup->getConfigString(ServerProperties::GAME_MODE)) ?? GameMode::SURVIVAL;
    }
 
    public function getForceGamemode() : bool{
        return $this->configGroup->getConfigBool(ServerProperties::FORCE_GAME_MODE, false);
    }
 
    public function getDifficulty() : int{
        return $this->configGroup->getConfigInt(ServerProperties::DIFFICULTY, World::DIFFICULTY_NORMAL);
    }
 
    public function hasWhitelist() : bool{
        return $this->configGroup->getConfigBool(ServerProperties::WHITELIST, false);
    }
 
    public function isHardcore() : bool{
        return $this->configGroup->getConfigBool(ServerProperties::HARDCORE, false);
    }
 
    public function getMotd() : string{
        return $this->configGroup->getConfigString(ServerProperties::MOTD, self::DEFAULT_SERVER_NAME);
    }
 
    public function getLoader() : ThreadSafeClassLoader{
        return $this->autoloader;
    }
 
    public function getLogger() : AttachableThreadSafeLogger{
        return $this->logger;
    }
 
    public function getUpdater() : UpdateChecker{
        return $this->updater;
    }
 
    public function getPluginManager() : PluginManager{
        return $this->pluginManager;
    }
 
    public function getCraftingManager() : CraftingManager{
        return $this->craftingManager;
    }
 
    public function getResourcePackManager() : ResourcePackManager{
        return $this->resourceManager;
    }
 
    public function getWorldManager() : WorldManager{
        return $this->worldManager;
    }
 
    public function getAsyncPool() : AsyncPool{
        return $this->asyncPool;
    }
 
    public function getTick() : int{
        return $this->tickCounter;
    }
 
    public function getTicksPerSecond() : float{
        return round($this->currentTPS, 2);
    }
 
    public function getTicksPerSecondAverage() : float{
        return round(array_sum($this->tickAverage) / count($this->tickAverage), 2);
    }
 
    public function getTickUsage() : float{
        return round($this->currentUse * 100, 2);
    }
 
    public function getTickUsageAverage() : float{
        return round((array_sum($this->useAverage) / count($this->useAverage)) * 100, 2);
    }
 
    public function getStartTime() : float{
        return $this->startTime;
    }
 
    public function getCommandMap() : SimpleCommandMap{
        return $this->commandMap;
    }
 
    public function getOnlinePlayers() : array{
        return $this->playerList;
    }
 
    public function shouldSavePlayerData() : bool{
        return $this->configGroup->getPropertyBool(Yml::PLAYER_SAVE_PLAYER_DATA, true);
    }
 
    public function getOfflinePlayer(string $name) : Player|OfflinePlayer|null{
        $name = strtolower($name);
        $result = $this->getPlayerExact($name);
 
        if($result === null){
            $result = new OfflinePlayer($name, $this->getOfflinePlayerData($name));
        }
 
        return $result;
    }
 
    public function hasOfflinePlayerData(string $name) : bool{
        return $this->playerDataProvider->hasData($name);
    }
 
    public function getOfflinePlayerData(string $name) : ?CompoundTag{
        return Timings::$syncPlayerDataLoad->time(function() use ($name) : ?CompoundTag{
            try{
                return $this->playerDataProvider->loadData($name);
            }catch(PlayerDataLoadException $e){
                $this->logger->debug("Failed to load player data for $name: " . $e->getMessage());
                $this->logger->error($this->language->translate(KnownTranslationFactory::pocketmine_data_playerCorrupted($name)));
                return null;
            }
        });
    }
 
    public function saveOfflinePlayerData(string $name, CompoundTag $nbtTag) : void{
        $ev = new PlayerDataSaveEvent($nbtTag, $name, $this->getPlayerExact($name));
        if(!$this->shouldSavePlayerData()){
            $ev->cancel();
        }
 
        $ev->call();
 
        if(!$ev->isCancelled()){
            Timings::$syncPlayerDataSave->time(function() use ($name, $ev) : void{
                try{
                    $this->playerDataProvider->saveData($name, $ev->getSaveData());
                }catch(PlayerDataSaveException $e){
                    $this->logger->critical($this->language->translate(KnownTranslationFactory::pocketmine_data_saveError($name, $e->getMessage())));
                    $this->logger->logException($e);
                }
            });
        }
    }
 
    public function createPlayer(NetworkSession $session, PlayerInfo $playerInfo, bool $authenticated, ?CompoundTag $offlinePlayerData) : Promise{
        $ev = new PlayerCreationEvent($session);
        $ev->call();
        $class = $ev->getPlayerClass();
 
        if($offlinePlayerData !== null && ($world = $this->worldManager->getWorldByName($offlinePlayerData->getString(Player::TAG_LEVEL, ""))) !== null){
            $playerPos = EntityDataHelper::parseLocation($offlinePlayerData, $world);
        }else{
            $world = $this->worldManager->getDefaultWorld();
            if($world === null){
                throw new AssumptionFailedError("Default world should always be loaded");
            }
            $playerPos = null;
        }
        $playerPromiseResolver = new PromiseResolver();
 
        $createPlayer = function(Location $location) use ($playerPromiseResolver, $class, $session, $playerInfo, $authenticated, $offlinePlayerData) : void{
            $player = new $class($this, $session, $playerInfo, $authenticated, $location, $offlinePlayerData);
            if(!$player->hasPlayedBefore()){
                $player->onGround = true; //TODO: this hack is needed for new players in-air ticks - they don't get detected as on-ground until they move
            }
            $playerPromiseResolver->resolve($player);
        };
 
        if($playerPos === null){ //new player or no valid position due to world not being loaded
            $world->requestSafeSpawn()->onCompletion(
                function(Position $spawn) use ($createPlayer, $playerPromiseResolver, $session, $world) : void{
                    if(!$session->isConnected()){
                        $playerPromiseResolver->reject();
                        return;
                    }
                    $createPlayer(Location::fromObject($spawn, $world));
                },
                function() use ($playerPromiseResolver, $session) : void{
                    if($session->isConnected()){
                        $session->disconnectWithError(KnownTranslationFactory::pocketmine_disconnect_error_respawn());
                    }
                    $playerPromiseResolver->reject();
                }
            );
        }else{ //returning player with a valid position - safe spawn not required
            $createPlayer($playerPos);
        }
 
        return $playerPromiseResolver->getPromise();
    }
 
    public function getPlayerByPrefix(string $name) : ?Player{
        $found = null;
        $name = strtolower($name);
        $delta = PHP_INT_MAX;
        foreach($this->getOnlinePlayers() as $player){
            if(stripos($player->getName(), $name) === 0){
                $curDelta = strlen($player->getName()) - strlen($name);
                if($curDelta < $delta){
                    $found = $player;
                    $delta = $curDelta;
                }
                if($curDelta === 0){
                    break;
                }
            }
        }
 
        return $found;
    }
 
    public function getPlayerExact(string $name) : ?Player{
        $name = strtolower($name);
        foreach($this->getOnlinePlayers() as $player){
            if(strtolower($player->getName()) === $name){
                return $player;
            }
        }
 
        return null;
    }
 
    public function getPlayerByRawUUID(string $rawUUID) : ?Player{
        return $this->playerList[$rawUUID] ?? null;
    }
 
    public function getPlayerByUUID(UuidInterface $uuid) : ?Player{
        return $this->getPlayerByRawUUID($uuid->getBytes());
    }
 
    public function getConfigGroup() : ServerConfigGroup{
        return $this->configGroup;
    }
 
    public function getPluginCommand(string $name){
        if(($command = $this->commandMap->getCommand($name)) instanceof PluginOwned){
            return $command;
        }else{
            return null;
        }
    }
 
    public function getNameBans() : BanList{
        return $this->banByName;
    }
 
    public function getIPBans() : BanList{
        return $this->banByIP;
    }
 
    public function addOp(string $name) : void{
        $this->operators->set(strtolower($name), true);
 
        if(($player = $this->getPlayerExact($name)) !== null){
            $player->setBasePermission(DefaultPermissions::ROOT_OPERATOR, true);
        }
        $this->operators->save();
    }
 
    public function removeOp(string $name) : void{
        $lowercaseName = strtolower($name);
        foreach(Utils::promoteKeys($this->operators->getAll()) as $operatorName => $_){
            $operatorName = (string) $operatorName;
            if($lowercaseName === strtolower($operatorName)){
                $this->operators->remove($operatorName);
            }
        }
 
        if(($player = $this->getPlayerExact($name)) !== null){
            $player->unsetBasePermission(DefaultPermissions::ROOT_OPERATOR);
        }
        $this->operators->save();
    }
 
    public function addWhitelist(string $name) : void{
        $this->whitelist->set(strtolower($name), true);
        $this->whitelist->save();
    }
 
    public function removeWhitelist(string $name) : void{
        $this->whitelist->remove(strtolower($name));
        $this->whitelist->save();
    }
 
    public function isWhitelisted(string $name) : bool{
        return !$this->hasWhitelist() || $this->operators->exists($name, true) || $this->whitelist->exists($name, true);
    }
 
    public function isOp(string $name) : bool{
        return $this->operators->exists($name, true);
    }
 
    public function getWhitelisted() : Config{
        return $this->whitelist;
    }
 
    public function getOps() : Config{
        return $this->operators;
    }
 
    public function getCommandAliases() : array{
        $section = $this->configGroup->getProperty(Yml::ALIASES);
        $result = [];
        if(is_array($section)){
            foreach(Utils::promoteKeys($section) as $key => $value){
                //TODO: more validation needed here
                //key might not be a string, value might not be list<string>
                $commands = [];
                if(is_array($value)){
                    $commands = $value;
                }else{
                    $commands[] = (string) $value;
                }
 
                $result[(string) $key] = $commands;
            }
        }
 
        return $result;
    }
 
    public static function getInstance() : Server{
        if(self::$instance === null){
            throw new \RuntimeException("Attempt to retrieve Server instance outside server thread");
        }
        return self::$instance;
    }
 
    public function __construct(
        private ThreadSafeClassLoader $autoloader,
        private AttachableThreadSafeLogger $logger,
        string $dataPath,
        string $pluginPath
    ){
        if(self::$instance !== null){
            throw new \LogicException("Only one server instance can exist at once");
        }
        self::$instance = $this;
        $this->startTime = microtime(true);
        $this->tickAverage = array_fill(0, self::TARGET_TICKS_PER_SECOND, self::TARGET_TICKS_PER_SECOND);
        $this->useAverage = array_fill(0, self::TARGET_TICKS_PER_SECOND, 0);
 
        Timings::init();
        $this->tickSleeper = new TimeTrackingSleeperHandler(Timings::$serverInterrupts);
 
        $this->signalHandler = new SignalHandler(function() : void{
            $this->logger->info("Received signal interrupt, stopping the server");
            $this->shutdown();
        });
 
        try{
            foreach([
                $dataPath,
                $pluginPath,
                Path::join($dataPath, "worlds"),
                Path::join($dataPath, "players")
            ] as $neededPath){
                if(!file_exists($neededPath)){
                    mkdir($neededPath, 0777);
                }
            }
 
            $this->dataPath = realpath($dataPath) . DIRECTORY_SEPARATOR;
            $this->pluginPath = realpath($pluginPath) . DIRECTORY_SEPARATOR;
 
            $this->logger->info("Loading server configuration");
            $pocketmineYmlPath = Path::join($this->dataPath, "pocketmine.yml");
            if(!file_exists($pocketmineYmlPath)){
                $content = Filesystem::fileGetContents(Path::join(\pocketmine\RESOURCE_PATH, "pocketmine.yml"));
                if(VersionInfo::IS_DEVELOPMENT_BUILD){
                    $content = str_replace("preferred-channel: stable", "preferred-channel: beta", $content);
                }
                @file_put_contents($pocketmineYmlPath, $content);
            }
 
            $this->configGroup = new ServerConfigGroup(
                new Config($pocketmineYmlPath, Config::YAML, []),
                new Config(Path::join($this->dataPath, "server.properties"), Config::PROPERTIES, [
                    ServerProperties::MOTD => self::DEFAULT_SERVER_NAME,
                    ServerProperties::SERVER_PORT_IPV4 => self::DEFAULT_PORT_IPV4,
                    ServerProperties::SERVER_PORT_IPV6 => self::DEFAULT_PORT_IPV6,
                    ServerProperties::ENABLE_IPV6 => true,
                    ServerProperties::WHITELIST => false,
                    ServerProperties::MAX_PLAYERS => self::DEFAULT_MAX_PLAYERS,
                    ServerProperties::GAME_MODE => GameMode::SURVIVAL->name, //TODO: this probably shouldn't use the enum name directly
                    ServerProperties::FORCE_GAME_MODE => false,
                    ServerProperties::HARDCORE => false,
                    ServerProperties::PVP => true,
                    ServerProperties::DIFFICULTY => World::DIFFICULTY_NORMAL,
                    ServerProperties::DEFAULT_WORLD_GENERATOR_SETTINGS => "",
                    ServerProperties::DEFAULT_WORLD_NAME => "world",
                    ServerProperties::DEFAULT_WORLD_SEED => "",
                    ServerProperties::DEFAULT_WORLD_GENERATOR => "DEFAULT",
                    ServerProperties::ENABLE_QUERY => true,
                    ServerProperties::AUTO_SAVE => true,
                    ServerProperties::VIEW_DISTANCE => self::DEFAULT_MAX_VIEW_DISTANCE,
                    ServerProperties::XBOX_AUTH => true,
                    ServerProperties::LANGUAGE => "eng"
                ])
            );
 
            $debugLogLevel = $this->configGroup->getPropertyInt(Yml::DEBUG_LEVEL, 1);
            if($this->logger instanceof MainLogger){
                $this->logger->setLogDebug($debugLogLevel > 1);
            }
 
            $this->forceLanguage = $this->configGroup->getPropertyBool(Yml::SETTINGS_FORCE_LANGUAGE, false);
            $selectedLang = $this->configGroup->getConfigString(ServerProperties::LANGUAGE, $this->configGroup->getPropertyString("settings.language", Language::FALLBACK_LANGUAGE));
            try{
                $this->language = new Language($selectedLang);
            }catch(LanguageNotFoundException $e){
                $this->logger->error($e->getMessage());
                try{
                    $this->language = new Language(Language::FALLBACK_LANGUAGE);
                }catch(LanguageNotFoundException $e){
                    $this->logger->emergency("Fallback language \"" . Language::FALLBACK_LANGUAGE . "\" not found");
                    return;
                }
            }
 
            $this->logger->info($this->language->translate(KnownTranslationFactory::language_selected($this->language->getName(), $this->language->getLang())));
 
            if(VersionInfo::IS_DEVELOPMENT_BUILD){
                if(!$this->configGroup->getPropertyBool(Yml::SETTINGS_ENABLE_DEV_BUILDS, false)){
                    $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_server_devBuild_error1(VersionInfo::NAME)));
                    $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_server_devBuild_error2()));
                    $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_server_devBuild_error3()));
                    $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_server_devBuild_error4(Yml::SETTINGS_ENABLE_DEV_BUILDS)));
                    $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_server_devBuild_error5(VersionInfo::GITHUB_URL . "/releases")));
                    $this->forceShutdownExit();
 
                    return;
                }
 
                $this->logger->warning(str_repeat("-", 40));
                $this->logger->warning($this->language->translate(KnownTranslationFactory::pocketmine_server_devBuild_warning1(VersionInfo::NAME)));
                $this->logger->warning($this->language->translate(KnownTranslationFactory::pocketmine_server_devBuild_warning2()));
                $this->logger->warning($this->language->translate(KnownTranslationFactory::pocketmine_server_devBuild_warning3()));
                $this->logger->warning(str_repeat("-", 40));
            }
 
            $this->memoryManager = new MemoryManager($this);
 
            $this->logger->info($this->language->translate(KnownTranslationFactory::pocketmine_server_start(TextFormat::AQUA . $this->getVersion() . TextFormat::RESET)));
 
            if(($poolSize = $this->configGroup->getPropertyString(Yml::SETTINGS_ASYNC_WORKERS, "auto")) === "auto"){
                $poolSize = 2;
                $processors = Utils::getCoreCount() - 2;
 
                if($processors > 0){
                    $poolSize = max(1, $processors);
                }
            }else{
                $poolSize = max(1, (int) $poolSize);
            }
 
            TimingsHandler::setEnabled($this->configGroup->getPropertyBool(Yml::SETTINGS_ENABLE_PROFILING, false));
            $this->profilingTickRate = $this->configGroup->getPropertyInt(Yml::SETTINGS_PROFILE_REPORT_TRIGGER, self::TARGET_TICKS_PER_SECOND);
 
            $this->asyncPool = new AsyncPool($poolSize, max(-1, $this->configGroup->getPropertyInt(Yml::MEMORY_ASYNC_WORKER_HARD_LIMIT, 256)), $this->autoloader, $this->logger, $this->tickSleeper);
            $this->asyncPool->addWorkerStartHook(function(int $i) : void{
                if(TimingsHandler::isEnabled()){
                    $this->asyncPool->submitTaskToWorker(TimingsControlTask::setEnabled(true), $i);
                }
            });
            TimingsHandler::getToggleCallbacks()->add(function(bool $enable) : void{
                foreach($this->asyncPool->getRunningWorkers() as $workerId){
                    $this->asyncPool->submitTaskToWorker(TimingsControlTask::setEnabled($enable), $workerId);
                }
            });
            TimingsHandler::getReloadCallbacks()->add(function() : void{
                foreach($this->asyncPool->getRunningWorkers() as $workerId){
                    $this->asyncPool->submitTaskToWorker(TimingsControlTask::reload(), $workerId);
                }
            });
            TimingsHandler::getCollectCallbacks()->add(function() : array{
                $promises = [];
                foreach($this->asyncPool->getRunningWorkers() as $workerId){
                    $resolver = new PromiseResolver();
                    $this->asyncPool->submitTaskToWorker(new TimingsCollectionTask($resolver), $workerId);
 
                    $promises[] = $resolver->getPromise();
                }
 
                return $promises;
            });
 
            $netCompressionThreshold = -1;
            if($this->configGroup->getPropertyInt(Yml::NETWORK_BATCH_THRESHOLD, 256) >= 0){
                $netCompressionThreshold = $this->configGroup->getPropertyInt(Yml::NETWORK_BATCH_THRESHOLD, 256);
            }
            if($netCompressionThreshold < 0){
                $netCompressionThreshold = null;
            }
 
            $netCompressionLevel = $this->configGroup->getPropertyInt(Yml::NETWORK_COMPRESSION_LEVEL, 6);
            if($netCompressionLevel < 1 || $netCompressionLevel > 9){
                $this->logger->warning("Invalid network compression level $netCompressionLevel set, setting to default 6");
                $netCompressionLevel = 6;
            }
            ZlibCompressor::setInstance(new ZlibCompressor($netCompressionLevel, $netCompressionThreshold, ZlibCompressor::DEFAULT_MAX_DECOMPRESSION_SIZE));
 
            $this->networkCompressionAsync = $this->configGroup->getPropertyBool(Yml::NETWORK_ASYNC_COMPRESSION, true);
            $this->networkCompressionAsyncThreshold = max(
                $this->configGroup->getPropertyInt(Yml::NETWORK_ASYNC_COMPRESSION_THRESHOLD, self::DEFAULT_ASYNC_COMPRESSION_THRESHOLD),
                $netCompressionThreshold ?? self::DEFAULT_ASYNC_COMPRESSION_THRESHOLD
            );
 
            EncryptionContext::$ENABLED = $this->configGroup->getPropertyBool(Yml::NETWORK_ENABLE_ENCRYPTION, true);
 
            $this->doTitleTick = $this->configGroup->getPropertyBool(Yml::CONSOLE_TITLE_TICK, true) && Terminal::hasFormattingCodes();
 
            $this->operators = new Config(Path::join($this->dataPath, "ops.txt"), Config::ENUM);
            $this->whitelist = new Config(Path::join($this->dataPath, "white-list.txt"), Config::ENUM);
 
            $bannedTxt = Path::join($this->dataPath, "banned.txt");
            $bannedPlayersTxt = Path::join($this->dataPath, "banned-players.txt");
            if(file_exists($bannedTxt) && !file_exists($bannedPlayersTxt)){
                @rename($bannedTxt, $bannedPlayersTxt);
            }
            @touch($bannedPlayersTxt);
            $this->banByName = new BanList($bannedPlayersTxt);
            $this->banByName->load();
            $bannedIpsTxt = Path::join($this->dataPath, "banned-ips.txt");
            @touch($bannedIpsTxt);
            $this->banByIP = new BanList($bannedIpsTxt);
            $this->banByIP->load();
 
            $this->maxPlayers = $this->configGroup->getConfigInt(ServerProperties::MAX_PLAYERS, self::DEFAULT_MAX_PLAYERS);
 
            $this->onlineMode = $this->configGroup->getConfigBool(ServerProperties::XBOX_AUTH, true);
            if($this->onlineMode){
                $this->logger->info($this->language->translate(KnownTranslationFactory::pocketmine_server_auth_enabled()));
            }else{
                $this->logger->warning($this->language->translate(KnownTranslationFactory::pocketmine_server_auth_disabled()));
                $this->logger->warning($this->language->translate(KnownTranslationFactory::pocketmine_server_authWarning()));
                $this->logger->warning($this->language->translate(KnownTranslationFactory::pocketmine_server_authProperty_disabled()));
            }
 
            $this->authKeyProvider = new AuthKeyProvider(new \PrefixedLogger($this->logger, "Minecraft Auth Key Provider"), $this->asyncPool);
 
            if($this->configGroup->getConfigBool(ServerProperties::HARDCORE, false) && $this->getDifficulty() < World::DIFFICULTY_HARD){
                $this->configGroup->setConfigInt(ServerProperties::DIFFICULTY, World::DIFFICULTY_HARD);
            }
 
            @cli_set_process_title($this->getName() . " " . $this->getPocketMineVersion());
 
            $this->serverID = Utils::getMachineUniqueId($this->getIp() . $this->getPort());
 
            $this->logger->debug("Server unique id: " . $this->getServerUniqueId());
            $this->logger->debug("Machine unique id: " . Utils::getMachineUniqueId());
 
            $this->network = new Network($this->logger);
            $this->network->setName($this->getMotd());
 
            $this->logger->info($this->language->translate(KnownTranslationFactory::pocketmine_server_info(
                $this->getName(),
                (VersionInfo::IS_DEVELOPMENT_BUILD ? TextFormat::YELLOW : "") . $this->getPocketMineVersion() . TextFormat::RESET
            )));
            $this->logger->info($this->language->translate(KnownTranslationFactory::pocketmine_server_license($this->getName())));
 
            DefaultPermissions::registerCorePermissions();
 
            $this->commandMap = new SimpleCommandMap($this);
 
            $this->craftingManager = CraftingManagerFromDataHelper::make(BedrockDataFiles::RECIPES);
 
            $this->resourceManager = new ResourcePackManager(Path::join($this->dataPath, "resource_packs"), $this->logger);
 
            $pluginGraylist = null;
            $graylistFile = Path::join($this->dataPath, "plugin_list.yml");
            if(!file_exists($graylistFile)){
                copy(Path::join(\pocketmine\RESOURCE_PATH, 'plugin_list.yml'), $graylistFile);
            }
            try{
                $array = yaml_parse(Filesystem::fileGetContents($graylistFile));
                if(!is_array($array)){
                    throw new \InvalidArgumentException("Expected array for root, but have " . gettype($array));
                }
                $pluginGraylist = PluginGraylist::fromArray($array);
            }catch(\InvalidArgumentException $e){
                $this->logger->emergency("Failed to load $graylistFile: " . $e->getMessage());
                $this->forceShutdownExit();
                return;
            }
            $this->pluginManager = new PluginManager($this, $this->configGroup->getPropertyBool(Yml::PLUGINS_LEGACY_DATA_DIR, true) ? null : Path::join($this->dataPath, "plugin_data"), $pluginGraylist);
            $this->pluginManager->registerInterface(new PharPluginLoader($this->autoloader));
            $this->pluginManager->registerInterface(new ScriptPluginLoader());
 
            $providerManager = new WorldProviderManager();
            if(
                ($format = $providerManager->getProviderByName($formatName = $this->configGroup->getPropertyString(Yml::LEVEL_SETTINGS_DEFAULT_FORMAT, ""))) !== null &&
                $format instanceof WritableWorldProviderManagerEntry
            ){
                $providerManager->setDefault($format);
            }elseif($formatName !== ""){
                $this->logger->warning($this->language->translate(KnownTranslationFactory::pocketmine_level_badDefaultFormat($formatName)));
            }
 
            $this->worldManager = new WorldManager($this, Path::join($this->dataPath, "worlds"), $providerManager);
            $this->worldManager->setAutoSave($this->configGroup->getConfigBool(ServerProperties::AUTO_SAVE, $this->worldManager->getAutoSave()));
            $this->worldManager->setAutoSaveInterval($this->configGroup->getPropertyInt(Yml::TICKS_PER_AUTOSAVE, $this->worldManager->getAutoSaveInterval()));
 
            $this->updater = new UpdateChecker($this, $this->configGroup->getPropertyString(Yml::AUTO_UPDATER_HOST, "update.pmmp.io"));
 
            $this->queryInfo = new QueryInfo($this);
 
            $this->playerDataProvider = new DatFilePlayerDataProvider(Path::join($this->dataPath, "players"));
 
            register_shutdown_function($this->crashDump(...));
 
            $loadErrorCount = 0;
            $this->pluginManager->loadPlugins($this->pluginPath, $loadErrorCount);
            if($loadErrorCount > 0){
                $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_plugin_someLoadErrors()));
                $this->forceShutdownExit();
                return;
            }
            if(!$this->enablePlugins(PluginEnableOrder::STARTUP)){
                $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_plugin_someEnableErrors()));
                $this->forceShutdownExit();
                return;
            }
 
            if(!$this->startupPrepareWorlds()){
                $this->forceShutdownExit();
                return;
            }
 
            if(!$this->enablePlugins(PluginEnableOrder::POSTWORLD)){
                $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_plugin_someEnableErrors()));
                $this->forceShutdownExit();
                return;
            }
 
            if(!$this->startupPrepareNetworkInterfaces()){
                $this->forceShutdownExit();
                return;
            }
 
            if($this->configGroup->getPropertyBool(Yml::ANONYMOUS_STATISTICS_ENABLED, true)){
                $this->sendUsageTicker = self::TICKS_PER_STATS_REPORT;
                $this->sendUsage(SendUsageTask::TYPE_OPEN);
            }
 
            $this->configGroup->save();
 
            $this->logger->info($this->language->translate(KnownTranslationFactory::pocketmine_server_defaultGameMode($this->getGamemode()->getTranslatableName())));
            $highlight = TextFormat::AQUA;
            $reset = TextFormat::RESET;
            $github = VersionInfo::GITHUB_URL;
            $splash = "\n\n";
            foreach([
                KnownTranslationFactory::pocketmine_server_url_discord("{$highlight}https://discord.pmmp.io{$reset}"),
                KnownTranslationFactory::pocketmine_server_url_docs("{$highlight}https://doc.pmmp.io{$reset}"),
                KnownTranslationFactory::pocketmine_server_url_sourceCode("{$highlight}{$github}{$reset}"),
                KnownTranslationFactory::pocketmine_server_url_freePlugins("{$highlight}https://poggit.pmmp.io/plugins{$reset}"),
                KnownTranslationFactory::pocketmine_server_url_donations("{$highlight}https://patreon.com/pocketminemp{$reset}"),
                KnownTranslationFactory::pocketmine_server_url_translations("{$highlight}https://translate.pocketmine.net{$reset}"),
                KnownTranslationFactory::pocketmine_server_url_bugReporting("{$highlight}{$github}/issues{$reset}")
            ] as $link){
                $splash .= "- " . $this->language->translate($link) . "\n";
            }
            $this->logger->info($splash);
 
            $this->logger->info($this->language->translate(KnownTranslationFactory::pocketmine_server_startFinished(strval(round(microtime(true) - $this->startTime, 3)))));
 
            $forwarder = new BroadcastLoggerForwarder($this, $this->logger, $this->language);
            $this->subscribeToBroadcastChannel(self::BROADCAST_CHANNEL_ADMINISTRATIVE, $forwarder);
            $this->subscribeToBroadcastChannel(self::BROADCAST_CHANNEL_USERS, $forwarder);
 
            //TODO: move console parts to a separate component
            if($this->configGroup->getPropertyBool(Yml::CONSOLE_ENABLE_INPUT, true)){
                $this->console = new ConsoleReaderChildProcessDaemon($this->logger);
            }
 
            $this->tickProcessor();
            $this->forceShutdown();
        }catch(\Throwable $e){
            $this->exceptionHandler($e);
        }
    }
 
    private function startupPrepareWorlds() : bool{
        $getGenerator = function(string $generatorName, string $generatorOptions, string $worldName) : ?string{
            $generatorEntry = GeneratorManager::getInstance()->getGenerator($generatorName);
            if($generatorEntry === null){
                $this->logger->error($this->language->translate(KnownTranslationFactory::pocketmine_level_generationError(
                    $worldName,
                    KnownTranslationFactory::pocketmine_level_unknownGenerator($generatorName)
                )));
                return null;
            }
            try{
                $generatorEntry->validateGeneratorOptions($generatorOptions);
            }catch(InvalidGeneratorOptionsException $e){
                $this->logger->error($this->language->translate(KnownTranslationFactory::pocketmine_level_generationError(
                    $worldName,
                    KnownTranslationFactory::pocketmine_level_invalidGeneratorOptions($generatorOptions, $generatorName, $e->getMessage())
                )));
                return null;
            }
            return $generatorEntry->getGeneratorClass();
        };
 
        $anyWorldFailedToLoad = false;
 
        foreach(Utils::promoteKeys((array) $this->configGroup->getProperty(Yml::WORLDS, [])) as $name => $options){
            if(!is_string($name)){
                //TODO: this probably should be an error
                continue;
            }
            if($options === null){
                $options = [];
            }elseif(!is_array($options)){
                //TODO: this probably should be an error
                continue;
            }
            if(!$this->worldManager->loadWorld($name, true)){
                if($this->worldManager->isWorldGenerated($name)){
                    //allow checking if other worlds are loadable, so the user gets all the errors in one go
                    $anyWorldFailedToLoad = true;
                    continue;
                }
                $creationOptions = WorldCreationOptions::create();
                //TODO: error checking
 
                $generatorName = $options["generator"] ?? "default";
                $generatorOptions = isset($options["preset"]) && is_string($options["preset"]) ? $options["preset"] : "";
 
                $generatorClass = $getGenerator($generatorName, $generatorOptions, $name);
                if($generatorClass === null){
                    $anyWorldFailedToLoad = true;
                    continue;
                }
                $creationOptions->setGeneratorClass($generatorClass);
                $creationOptions->setGeneratorOptions($generatorOptions);
 
                $creationOptions->setDifficulty($this->getDifficulty());
                if(isset($options["difficulty"]) && is_string($options["difficulty"])){
                    $creationOptions->setDifficulty(World::getDifficultyFromString($options["difficulty"]));
                }
 
                if(isset($options["seed"])){
                    $convertedSeed = Generator::convertSeed((string) ($options["seed"] ?? ""));
                    if($convertedSeed !== null){
                        $creationOptions->setSeed($convertedSeed);
                    }
                }
 
                $this->worldManager->generateWorld($name, $creationOptions);
            }
        }
 
        if($this->worldManager->getDefaultWorld() === null){
            $default = $this->configGroup->getConfigString(ServerProperties::DEFAULT_WORLD_NAME, "world");
            if(trim($default) === ""){
                $this->logger->warning("level-name cannot be null, using default");
                $default = "world";
                $this->configGroup->setConfigString(ServerProperties::DEFAULT_WORLD_NAME, "world");
            }
            if(!$this->worldManager->loadWorld($default, true)){
                if($this->worldManager->isWorldGenerated($default)){
                    $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_level_defaultError()));
 
                    return false;
                }
                $generatorName = $this->configGroup->getConfigString(ServerProperties::DEFAULT_WORLD_GENERATOR);
                $generatorOptions = $this->configGroup->getConfigString(ServerProperties::DEFAULT_WORLD_GENERATOR_SETTINGS);
                $generatorClass = $getGenerator($generatorName, $generatorOptions, $default);
 
                if($generatorClass === null){
                    $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_level_defaultError()));
                    return false;
                }
                $creationOptions = WorldCreationOptions::create()
                    ->setGeneratorClass($generatorClass)
                    ->setGeneratorOptions($generatorOptions);
                $convertedSeed = Generator::convertSeed($this->configGroup->getConfigString(ServerProperties::DEFAULT_WORLD_SEED));
                if($convertedSeed !== null){
                    $creationOptions->setSeed($convertedSeed);
                }
                $creationOptions->setDifficulty($this->getDifficulty());
                $this->worldManager->generateWorld($default, $creationOptions);
            }
 
            $world = $this->worldManager->getWorldByName($default);
            if($world === null){
                throw new AssumptionFailedError("We just loaded/generated the default world, so it must exist");
            }
            $this->worldManager->setDefaultWorld($world);
        }
 
        return !$anyWorldFailedToLoad;
    }
 
    private function startupPrepareConnectableNetworkInterfaces(
        string $ip,
        int $port,
        bool $ipV6,
        bool $useQuery,
        PacketBroadcaster $packetBroadcaster,
        EntityEventBroadcaster $entityEventBroadcaster,
        TypeConverter $typeConverter
    ) : bool{
        $prettyIp = $ipV6 ? "[$ip]" : $ip;
        try{
            $rakLibRegistered = $this->network->registerInterface(new RakLibInterface($this, $ip, $port, $ipV6, $packetBroadcaster, $entityEventBroadcaster, $typeConverter));
        }catch(NetworkInterfaceStartException $e){
            $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_server_networkStartFailed(
                $ip,
                (string) $port,
                $e->getMessage()
            )));
            return false;
        }
        if($rakLibRegistered){
            $this->logger->info($this->language->translate(KnownTranslationFactory::pocketmine_server_networkStart($prettyIp, (string) $port)));
        }
        if($useQuery){
            if(!$rakLibRegistered){
                //RakLib would normally handle the transport for Query packets
                //if it's not registered we need to make sure Query still works
                $this->network->registerInterface(new DedicatedQueryNetworkInterface($ip, $port, $ipV6, new \PrefixedLogger($this->logger, "Dedicated Query Interface")));
            }
            $this->logger->info($this->language->translate(KnownTranslationFactory::pocketmine_server_query_running($prettyIp, (string) $port)));
        }
        return true;
    }
 
    private function startupPrepareNetworkInterfaces() : bool{
        $useQuery = $this->configGroup->getConfigBool(ServerProperties::ENABLE_QUERY, true);
 
        $typeConverter = TypeConverter::getInstance();
        $packetBroadcaster = new StandardPacketBroadcaster($this);
        $entityEventBroadcaster = new StandardEntityEventBroadcaster($packetBroadcaster, $typeConverter);
 
        if(
            !$this->startupPrepareConnectableNetworkInterfaces($this->getIp(), $this->getPort(), false, $useQuery, $packetBroadcaster, $entityEventBroadcaster, $typeConverter) ||
            (
                $this->configGroup->getConfigBool(ServerProperties::ENABLE_IPV6, true) &&
                !$this->startupPrepareConnectableNetworkInterfaces($this->getIpV6(), $this->getPortV6(), true, $useQuery, $packetBroadcaster, $entityEventBroadcaster, $typeConverter)
            )
        ){
            return false;
        }
 
        if($useQuery){
            $this->network->registerRawPacketHandler(new QueryHandler($this));
        }
 
        foreach($this->getIPBans()->getEntries() as $entry){
            $this->network->blockAddress($entry->getName(), -1);
        }
 
        if($this->configGroup->getPropertyBool(Yml::NETWORK_UPNP_FORWARDING, false)){
            $this->network->registerInterface(new UPnPNetworkInterface($this->logger, Internet::getInternalIP(), $this->getPort()));
        }
 
        return true;
    }
 
    public function subscribeToBroadcastChannel(string $channelId, CommandSender $subscriber) : void{
        $this->broadcastSubscribers[$channelId][spl_object_id($subscriber)] = $subscriber;
    }
 
    public function unsubscribeFromBroadcastChannel(string $channelId, CommandSender $subscriber) : void{
        if(isset($this->broadcastSubscribers[$channelId][spl_object_id($subscriber)])){
            if(count($this->broadcastSubscribers[$channelId]) === 1){
                unset($this->broadcastSubscribers[$channelId]);
            }else{
                unset($this->broadcastSubscribers[$channelId][spl_object_id($subscriber)]);
            }
        }
    }
 
    public function unsubscribeFromAllBroadcastChannels(CommandSender $subscriber) : void{
        foreach(Utils::stringifyKeys($this->broadcastSubscribers) as $channelId => $recipients){
            $this->unsubscribeFromBroadcastChannel($channelId, $subscriber);
        }
    }
 
    public function getBroadcastChannelSubscribers(string $channelId) : array{
        return $this->broadcastSubscribers[$channelId] ?? [];
    }
 
    public function broadcastMessage(Translatable|string $message, ?array $recipients = null) : int{
        $recipients = $recipients ?? $this->getBroadcastChannelSubscribers(self::BROADCAST_CHANNEL_USERS);
 
        foreach($recipients as $recipient){
            $recipient->sendMessage($message);
        }
 
        return count($recipients);
    }
 
    private function getPlayerBroadcastSubscribers(string $channelId) : array{
        $players = [];
        foreach($this->broadcastSubscribers[$channelId] as $subscriber){
            if($subscriber instanceof Player){
                $players[spl_object_id($subscriber)] = $subscriber;
            }
        }
        return $players;
    }
 
    public function broadcastTip(string $tip, ?array $recipients = null) : int{
        $recipients = $recipients ?? $this->getPlayerBroadcastSubscribers(self::BROADCAST_CHANNEL_USERS);
 
        foreach($recipients as $recipient){
            $recipient->sendTip($tip);
        }
 
        return count($recipients);
    }
 
    public function broadcastPopup(string $popup, ?array $recipients = null) : int{
        $recipients = $recipients ?? $this->getPlayerBroadcastSubscribers(self::BROADCAST_CHANNEL_USERS);
 
        foreach($recipients as $recipient){
            $recipient->sendPopup($popup);
        }
 
        return count($recipients);
    }
 
    public function broadcastTitle(string $title, string $subtitle = "", int $fadeIn = -1, int $stay = -1, int $fadeOut = -1, ?array $recipients = null) : int{
        $recipients = $recipients ?? $this->getPlayerBroadcastSubscribers(self::BROADCAST_CHANNEL_USERS);
 
        foreach($recipients as $recipient){
            $recipient->sendTitle($title, $subtitle, $fadeIn, $stay, $fadeOut);
        }
 
        return count($recipients);
    }
 
    public function prepareBatch(string $buffer, Compressor $compressor, ?bool $sync = null, ?TimingsHandler $timings = null) : CompressBatchPromise|string{
        $timings ??= Timings::$playerNetworkSendCompress;
        try{
            $timings->startTiming();
 
            $threshold = $compressor->getCompressionThreshold();
            if($threshold === null || strlen($buffer) < $compressor->getCompressionThreshold()){
                $compressionType = CompressionAlgorithm::NONE;
                $compressed = $buffer;
 
            }else{
                $sync ??= !$this->networkCompressionAsync;
 
                if(!$sync && strlen($buffer) >= $this->networkCompressionAsyncThreshold){
                    $promise = new CompressBatchPromise();
                    $task = new CompressBatchTask($buffer, $promise, $compressor);
                    $this->asyncPool->submitTask($task);
                    return $promise;
                }
 
                $compressionType = $compressor->getNetworkId();
                $compressed = $compressor->compress($buffer);
            }
 
            return chr($compressionType) . $compressed;
        }finally{
            $timings->stopTiming();
        }
    }
 
    public function enablePlugins(PluginEnableOrder $type) : bool{
        $allSuccess = true;
        foreach($this->pluginManager->getPlugins() as $plugin){
            if(!$plugin->isEnabled() && $plugin->getDescription()->getOrder() === $type){
                if(!$this->pluginManager->enablePlugin($plugin)){
                    $allSuccess = false;
                }
            }
        }
 
        if($type === PluginEnableOrder::POSTWORLD){
            $this->commandMap->registerServerAliases();
        }
 
        return $allSuccess;
    }
 
    public function dispatchCommand(CommandSender $sender, string $commandLine, bool $internal = false) : bool{
        if(!$internal){
            $ev = new CommandEvent($sender, $commandLine);
            $ev->call();
            if($ev->isCancelled()){
                return false;
            }
 
            $commandLine = $ev->getCommand();
        }
 
        return $this->commandMap->dispatch($sender, $commandLine);
    }
 
    public function shutdown() : void{
        if($this->isRunning){
            $this->isRunning = false;
            $this->signalHandler->unregister();
        }
    }
 
    private function forceShutdownExit() : void{
        $this->forceShutdown();
        Process::kill(Process::pid());
    }
 
    public function forceShutdown() : void{
        if($this->hasStopped){
            return;
        }
 
        if($this->doTitleTick){
            echo "\x1b]0;\x07";
        }
 
        if($this->isRunning){
            $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_server_forcingShutdown()));
        }
        try{
            if(!$this->isRunning()){
                $this->sendUsage(SendUsageTask::TYPE_CLOSE);
            }
 
            $this->hasStopped = true;
 
            $this->shutdown();
 
            if(isset($this->pluginManager)){
                $this->logger->debug("Disabling all plugins");
                $this->pluginManager->disablePlugins();
            }
 
            if(isset($this->network)){
                $this->network->getSessionManager()->close($this->configGroup->getPropertyString(Yml::SETTINGS_SHUTDOWN_MESSAGE, "Server closed"));
            }
 
            if(isset($this->worldManager)){
                $this->logger->debug("Unloading all worlds");
                foreach($this->worldManager->getWorlds() as $world){
                    $this->worldManager->unloadWorld($world, true);
                }
            }
 
            $this->logger->debug("Removing event handlers");
            HandlerListManager::global()->unregisterAll();
 
            if(isset($this->asyncPool)){
                $this->logger->debug("Shutting down async task worker pool");
                $this->asyncPool->shutdown();
            }
 
            if(isset($this->configGroup)){
                $this->logger->debug("Saving properties");
                $this->configGroup->save();
            }
 
            if($this->console !== null){
                $this->logger->debug("Closing console");
                $this->console->quit();
            }
 
            if(isset($this->network)){
                $this->logger->debug("Stopping network interfaces");
                foreach($this->network->getInterfaces() as $interface){
                    $this->logger->debug("Stopping network interface " . get_class($interface));
                    $this->network->unregisterInterface($interface);
                }
            }
        }catch(\Throwable $e){
            $this->logger->logException($e);
            $this->logger->emergency("Crashed while crashing, killing process");
            @Process::kill(Process::pid());
        }
 
    }
 
    public function getQueryInformation() : QueryInfo{
        return $this->queryInfo;
    }
 
    public function exceptionHandler(\Throwable $e, ?array $trace = null) : void{
        while(@ob_end_flush()){}
        global $lastError;
 
        if($trace === null){
            $trace = $e->getTrace();
        }
 
        //If this is a thread crash, this logs where the exception came from on the main thread, as opposed to the
        //crashed thread. This is intentional, and might be useful for debugging
        //Assume that the thread already logged the original exception with the correct stack trace
        $this->logger->logException($e, $trace);
 
        if($e instanceof ThreadCrashException){
            $info = $e->getCrashInfo();
            $type = $info->getType();
            $errstr = $info->getMessage();
            $errfile = $info->getFile();
            $errline = $info->getLine();
            $printableTrace = $info->getTrace();
            $thread = $info->getThreadName();
        }else{
            $type = get_class($e);
            $errstr = $e->getMessage();
            $errfile = $e->getFile();
            $errline = $e->getLine();
            $printableTrace = Utils::printableTraceWithMetadata($trace);
            $thread = "Main";
        }
 
        $errstr = preg_replace('/\s+/', ' ', trim($errstr));
 
        $lastError = [
            "type" => $type,
            "message" => $errstr,
            "fullFile" => $errfile,
            "file" => Filesystem::cleanPath($errfile),
            "line" => $errline,
            "trace" => $printableTrace,
            "thread" => $thread
        ];
 
        global $lastExceptionError, $lastError;
        $lastExceptionError = $lastError;
        $this->crashDump();
    }
 
    private function writeCrashDumpFile(CrashDump $dump) : string{
        $crashFolder = Path::join($this->dataPath, "crashdumps");
        if(!is_dir($crashFolder)){
            mkdir($crashFolder);
        }
        $crashDumpPath = Path::join($crashFolder, date("Y-m-d_H.i.s_T", (int) $dump->getData()->time) . ".log");
 
        $fp = @fopen($crashDumpPath, "wb");
        if(!is_resource($fp)){
            throw new \RuntimeException("Unable to open new file to generate crashdump");
        }
        $writer = new CrashDumpRenderer($fp, $dump->getData());
        $writer->renderHumanReadable();
        $dump->encodeData($writer);
 
        fclose($fp);
        return $crashDumpPath;
    }
 
    public function crashDump() : void{
        while(@ob_end_flush()){}
        if(!$this->isRunning){
            return;
        }
        if($this->sendUsageTicker > 0){
            $this->sendUsage(SendUsageTask::TYPE_CLOSE);
        }
        $this->hasStopped = false;
 
        ini_set("error_reporting", '0');
        ini_set("memory_limit", '-1'); //Fix error dump not dumped on memory problems
        try{
            $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_crash_create()));
            $dump = new CrashDump($this, $this->pluginManager ?? null);
 
            $crashDumpPath = $this->writeCrashDumpFile($dump);
 
            $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_crash_submit($crashDumpPath)));
 
            if($this->configGroup->getPropertyBool(Yml::AUTO_REPORT_ENABLED, true)){
                $report = true;
 
                $stamp = Path::join($this->dataPath, "crashdumps", ".last_crash");
                $crashInterval = 120; //2 minutes
                if(($lastReportTime = @filemtime($stamp)) !== false && $lastReportTime + $crashInterval >= time()){
                    $report = false;
                    $this->logger->debug("Not sending crashdump due to last crash less than $crashInterval seconds ago");
                }
                @touch($stamp); //update file timestamp
 
                if($dump->getData()->error["type"] === \ParseError::class){
                    $report = false;
                }
 
                if(strrpos(VersionInfo::GIT_HASH(), "-dirty") !== false || VersionInfo::GIT_HASH() === str_repeat("00", 20)){
                    $this->logger->debug("Not sending crashdump due to locally modified");
                    $report = false; //Don't send crashdumps for locally modified builds
                }
 
                if($report){
                    $url = ($this->configGroup->getPropertyBool(Yml::AUTO_REPORT_USE_HTTPS, true) ? "https" : "http") . "://" . $this->configGroup->getPropertyString(Yml::AUTO_REPORT_HOST, "crash.pmmp.io") . "/submit/api";
                    $postUrlError = "Unknown error";
                    $reply = Internet::postURL($url, [
                        "report" => "yes",
                        "name" => $this->getName() . " " . $this->getPocketMineVersion(),
                        "email" => "[email protected]",
                        "reportPaste" => base64_encode($dump->getEncodedData())
                    ], 10, [], $postUrlError);
 
                    if($reply !== null && is_object($data = json_decode($reply->getBody()))){
                        if(isset($data->crashId) && is_int($data->crashId) && isset($data->crashUrl) && is_string($data->crashUrl)){
                            $reportId = $data->crashId;
                            $reportUrl = $data->crashUrl;
                            $this->logger->emergency($this->language->translate(KnownTranslationFactory::pocketmine_crash_archive($reportUrl, (string) $reportId)));
                        }elseif(isset($data->error) && is_string($data->error)){
                            $this->logger->emergency("Automatic crash report submission failed: $data->error");
                        }else{
                            $this->logger->emergency("Invalid JSON response received from crash archive: " . $reply->getBody());
                        }
                    }else{
                        $this->logger->emergency("Failed to communicate with crash archive: $postUrlError");
                    }
                }
            }
        }catch(\Throwable $e){
            $this->logger->logException($e);
            try{
                $this->logger->critical($this->language->translate(KnownTranslationFactory::pocketmine_crash_error($e->getMessage())));
            }catch(\Throwable $e){}
        }
 
        $this->forceShutdown();
        $this->isRunning = false;
 
        //Force minimum uptime to be >= 120 seconds, to reduce the impact of spammy crash loops
        $uptime = time() - ((int) $this->startTime);
        $minUptime = 120;
        $spacing = $minUptime - $uptime;
        if($spacing > 0){
            echo "--- Uptime {$uptime}s - waiting {$spacing}s to throttle automatic restart (you can kill the process safely now) ---" . PHP_EOL;
            sleep($spacing);
        }
        @Process::kill(Process::pid());
        exit(1);
    }
 
    public function __debugInfo() : array{
        return [];
    }
 
    public function getTickSleeper() : SleeperHandler{
        return $this->tickSleeper;
    }
 
    private function tickProcessor() : void{
        $this->nextTick = microtime(true);
 
        while($this->isRunning){
            $this->tick();
 
            //sleeps are self-correcting - if we undersleep 1ms on this tick, we'll sleep an extra ms on the next tick
            $this->tickSleeper->sleepUntil($this->nextTick);
        }
    }
 
    public function addOnlinePlayer(Player $player) : bool{
        $ev = new PlayerLoginEvent($player, "Plugin reason");
        $ev->call();
        if($ev->isCancelled() || !$player->isConnected()){
            $player->disconnect($ev->getKickMessage());
 
            return false;
        }
 
        $session = $player->getNetworkSession();
        $position = $player->getPosition();
        $this->logger->info($this->language->translate(KnownTranslationFactory::pocketmine_player_logIn(
            TextFormat::AQUA . $player->getName() . TextFormat::RESET,
            $session->getIp(),
            (string) $session->getPort(),
            (string) $player->getId(),
            $position->getWorld()->getDisplayName(),
            (string) round($position->x, 4),
            (string) round($position->y, 4),
            (string) round($position->z, 4)
        )));
 
        foreach($this->playerList as $p){
            $p->getNetworkSession()->onPlayerAdded($player);
        }
        $rawUUID = $player->getUniqueId()->getBytes();
        $this->playerList[$rawUUID] = $player;
 
        if($this->sendUsageTicker > 0){
            $this->uniquePlayers[$rawUUID] = $rawUUID;
        }
 
        return true;
    }
 
    public function removeOnlinePlayer(Player $player) : void{
        if(isset($this->playerList[$rawUUID = $player->getUniqueId()->getBytes()])){
            unset($this->playerList[$rawUUID]);
            foreach($this->playerList as $p){
                $p->getNetworkSession()->onPlayerRemoved($player);
            }
        }
    }
 
    public function sendUsage(int $type = SendUsageTask::TYPE_STATUS) : void{
        if($this->configGroup->getPropertyBool(Yml::ANONYMOUS_STATISTICS_ENABLED, true)){
            $this->asyncPool->submitTask(new SendUsageTask($this, $type, $this->uniquePlayers));
        }
        $this->uniquePlayers = [];
    }
 
    public function getLanguage() : Language{
        return $this->language;
    }
 
    public function isLanguageForced() : bool{
        return $this->forceLanguage;
    }
 
    public function getAuthKeyProvider() : AuthKeyProvider{
        return $this->authKeyProvider;
    }
 
    public function getNetwork() : Network{
        return $this->network;
    }
 
    public function getMemoryManager() : MemoryManager{
        return $this->memoryManager;
    }
 
    private function titleTick() : void{
        Timings::$titleTick->startTiming();
 
        $u = Process::getAdvancedMemoryUsage();
        $usage = sprintf("%g/%g/%g MB @ %d threads", round(($u[0] / 1024) / 1024, 2), round(($u[1] / 1024) / 1024, 2), round(($u[2] / 1024) / 1024, 2), Process::getThreadCount());
 
        $online = count($this->playerList);
        $connecting = $this->network->getConnectionCount() - $online;
        $bandwidthStats = $this->network->getBandwidthTracker();
 
        echo "\x1b]0;" . $this->getName() . " " .
            $this->getPocketMineVersion() .
            " | Online $online/" . $this->maxPlayers .
            ($connecting > 0 ? " (+$connecting connecting)" : "") .
            " | Memory " . $usage .
            " | U " . round($bandwidthStats->getSend()->getAverageBytes() / 1024, 2) .
            " D " . round($bandwidthStats->getReceive()->getAverageBytes() / 1024, 2) .
            " kB/s | TPS " . $this->getTicksPerSecondAverage() .
            " | Load " . $this->getTickUsageAverage() . "%\x07";
 
        Timings::$titleTick->stopTiming();
    }
 
    private function tick() : void{
        $tickTime = microtime(true);
        if(($tickTime - $this->nextTick) < -0.025){ //Allow half a tick of diff
            return;
        }
 
        Timings::$serverTick->startTiming();
 
        ++$this->tickCounter;
 
        Timings::$scheduler->startTiming();
        $this->pluginManager->tickSchedulers($this->tickCounter);
        Timings::$scheduler->stopTiming();
 
        Timings::$schedulerAsync->startTiming();
        $this->asyncPool->collectTasks();
        Timings::$schedulerAsync->stopTiming();
 
        $this->worldManager->tick($this->tickCounter);
 
        Timings::$connection->startTiming();
        $this->network->tick();
        Timings::$connection->stopTiming();
 
        if(($this->tickCounter % self::TARGET_TICKS_PER_SECOND) === 0){
            if($this->doTitleTick){
                $this->titleTick();
            }
            $this->currentTPS = self::TARGET_TICKS_PER_SECOND;
            $this->currentUse = 0;
 
            $queryRegenerateEvent = new QueryRegenerateEvent(new QueryInfo($this));
            $queryRegenerateEvent->call();
            $this->queryInfo = $queryRegenerateEvent->getQueryInfo();
 
            $this->network->updateName();
            $this->network->getBandwidthTracker()->rotateAverageHistory();
        }
 
        if($this->sendUsageTicker > 0 && --$this->sendUsageTicker === 0){
            $this->sendUsageTicker = self::TICKS_PER_STATS_REPORT;
            $this->sendUsage(SendUsageTask::TYPE_STATUS);
        }
 
        if(($this->tickCounter % self::TICKS_PER_WORLD_CACHE_CLEAR) === 0){
            foreach($this->worldManager->getWorlds() as $world){
                $world->clearCache();
            }
        }
 
        if(($this->tickCounter % self::TICKS_PER_TPS_OVERLOAD_WARNING) === 0 && $this->getTicksPerSecondAverage() < self::TPS_OVERLOAD_WARNING_THRESHOLD){
            $this->logger->warning($this->language->translate(KnownTranslationFactory::pocketmine_server_tickOverload()));
        }
 
        $this->memoryManager->check();
 
        if($this->console !== null){
            Timings::$serverCommand->startTiming();
            while(($line = $this->console->readLine()) !== null){
                $this->consoleSender ??= new ConsoleCommandSender($this, $this->language);
                $this->dispatchCommand($this->consoleSender, $line);
            }
            Timings::$serverCommand->stopTiming();
        }
 
        Timings::$serverTick->stopTiming();
 
        $now = microtime(true);
        $totalTickTimeSeconds = $now - $tickTime + ($this->tickSleeper->getNotificationProcessingTime() / 1_000_000_000);
        $this->currentTPS = min(self::TARGET_TICKS_PER_SECOND, 1 / max(0.001, $totalTickTimeSeconds));
        $this->currentUse = min(1, $totalTickTimeSeconds / self::TARGET_SECONDS_PER_TICK);
 
        TimingsHandler::tick($this->currentTPS <= $this->profilingTickRate);
 
        $idx = $this->tickCounter % self::TARGET_TICKS_PER_SECOND;
        $this->tickAverage[$idx] = $this->currentTPS;
        $this->useAverage[$idx] = $this->currentUse;
        $this->tickSleeper->resetNotificationProcessingTime();
 
        if(($this->nextTick - $tickTime) < -1){
            $this->nextTick = $tickTime;
        }else{
            $this->nextTick += self::TARGET_SECONDS_PER_TICK;
        }
    }
}