Multiverse-Core/src/main/java/com/onarandombox/MultiverseCore/commandtools/queue/CommandQueueManager.java

108 lines
4.0 KiB
Java

/******************************************************************************
* Multiverse 2 Copyright (c) the Multiverse Team 2020. *
* Multiverse 2 is licensed under the BSD License. *
* For more information please check the README.md file included *
* with this project. *
******************************************************************************/
package com.onarandombox.MultiverseCore.commandtools.queue;
import com.dumptruckman.minecraft.util.Logging;
import com.onarandombox.MultiverseCore.MultiverseCore;
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.command.CommandSender;
import org.bukkit.scheduler.BukkitTask;
import org.jetbrains.annotations.NotNull;
import java.util.Map;
import java.util.WeakHashMap;
/**
* Queue dangerous commands, with the need to use '/mv confirm' before executing.
*/
public class CommandQueueManager {
private final MultiverseCore plugin;
private final Map<CommandSender, QueuedCommand> queuedCommandMap;
public CommandQueueManager(@NotNull MultiverseCore plugin) {
this.plugin = plugin;
this.queuedCommandMap = new WeakHashMap<>();
}
public void addToQueue(QueuedCommand queuedCommand) {
CommandSender sender = queuedCommand.getSender();
this.cancelPreviousInQueue(sender);
this.queuedCommandMap.put(sender, queuedCommand);
queuedCommand.setExpireTask(runExpireLater(queuedCommand));
sender.sendMessage(queuedCommand.getPrompt());
sender.sendMessage(String.format("Run %s/mv confirm %sto continue.", ChatColor.GREEN, ChatColor.WHITE));
}
/**
* Since only one command is stored in queue per sender, we remove the old one.
*
* @param sender {@link CommandSender} that executed the command.
*/
private void cancelPreviousInQueue(@NotNull CommandSender sender) {
QueuedCommand previousCommand = queuedCommandMap.get(sender);
if (previousCommand == null) {
return;
}
previousCommand.getExpireTask().cancel();
this.queuedCommandMap.remove(sender);
}
/**
* Expire task that remove {@link QueuedCommand} from queue after expiry.
*
* @param queuedCommand Command to run the expire task on.
* @return The expire {@link BukkitTask}.
*/
@NotNull
private BukkitTask runExpireLater(@NotNull QueuedCommand queuedCommand) {
return Bukkit.getScheduler().runTaskLater(
this.plugin,
expireRunnable(queuedCommand),
queuedCommand.getValidDuration()
);
}
@NotNull
private Runnable expireRunnable(@NotNull QueuedCommand queuedCommand) {
return () -> {
QueuedCommand matchingQueuedCommand = this.queuedCommandMap.get(queuedCommand.getSender());
if (!queuedCommand.equals(matchingQueuedCommand)) {
Logging.finer("This is an old command already.");
return;
}
Logging.finer("Command has expired, removing...");
this.queuedCommandMap.remove(queuedCommand.getSender());
};
}
/**
* Runs the command in queue for the given sender, if any.
*
* @param sender {@link CommandSender} that confirmed the command.
* @return True of queued command ran successfully, false otherwise.
*/
public boolean runQueuedCommand(@NotNull CommandSender sender) {
CommandSender targetSender = QueuedCommand.parseSender(sender);
QueuedCommand queuedCommand = this.queuedCommandMap.get(targetSender);
if (queuedCommand == null) {
sender.sendMessage("You do not have any commands in queue.");
return false;
}
Logging.finer("Running queued command...");
queuedCommand.getAction().run();
queuedCommand.getExpireTask().cancel();
this.queuedCommandMap.remove(targetSender);
return true;
}
}