Add ability to add dangerous commands, users must now confirm mvdelete

src/com/onarandombox/MultiverseCore/MultiverseCore.java

@@ -2,6 +2,7 @@ package com.onarandombox.MultiverseCore;
 
 import java.io.File;
 import java.util.ArrayList;
+import java.util.Calendar;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -43,6 +44,8 @@ import com.iConomy.iConomy;
 import com.nijiko.permissions.PermissionHandler;
 import com.nijikokun.bukkit.Permissions.Permissions;
 import com.onarandombox.MultiverseCore.command.CommandManager;
+import com.onarandombox.MultiverseCore.command.QueuedCommand;
+import com.onarandombox.MultiverseCore.command.commands.ConfirmCommand;
 import com.onarandombox.MultiverseCore.command.commands.CoordCommand;
 import com.onarandombox.MultiverseCore.command.commands.CreateCommand;
 import com.onarandombox.MultiverseCore.command.commands.DeleteCommand;
@@ -109,6 +112,9 @@ public class MultiverseCore extends JavaPlugin {
     // HashMap to contain information relating to the Players.
     public HashMap<String, MVPlayerSession> playerSessions = new HashMap<String, MVPlayerSession>();
     
+    // List to hold commands that require approval
+    public List<QueuedCommand> queuedCommands = new ArrayList<QueuedCommand>();
+    
     @Override
     public void onLoad() {
         // Create our DataFolder
@@ -243,7 +249,7 @@ public class MultiverseCore extends JavaPlugin {
             MVWorld mvworld = worlds.get(key);
             List<String> monsters = mvworld.monsterList;
             List<String> animals = mvworld.animalList;
-            System.out.print("Monster Size:" + monsters.size() + " - " + "Animal Size: " +  animals.size());
+            System.out.print("Monster Size:" + monsters.size() + " - " + "Animal Size: " + animals.size());
             for (Entity e : world.getEntities()) {
                 // Check against Monsters
                 if (e instanceof Creeper || e instanceof Skeleton || e instanceof Spider || e instanceof Zombie || e instanceof Ghast || e instanceof PigZombie || e instanceof Giant || e instanceof Slime || e instanceof Monster) {
@@ -305,6 +311,7 @@ public class MultiverseCore extends JavaPlugin {
         commandManager.addCommand(new RemoveCommand(this));
         commandManager.addCommand(new DeleteCommand(this));
         commandManager.addCommand(new UnloadCommand(this));
+        commandManager.addCommand(new ConfirmCommand(this));
     }
     
     /**
@@ -651,4 +658,55 @@ public class MultiverseCore extends JavaPlugin {
         }
         return environment;
     }
+    
+    
+    // TODO: Find out where to put these next 3 methods! I just stuck them here for now --FF
+
+    
+    /**
+     * 
+     */
+    public void queueCommand(CommandSender sender, String commandName, String methodName, String[] args, Class<?>[] paramTypes, String success, String fail) {
+        cancelQueuedCommand(sender);
+        queuedCommands.add(new QueuedCommand(methodName, args, paramTypes, sender, Calendar.getInstance(), this, success, fail));
+        sender.sendMessage("The command " + ChatColor.RED + commandName + ChatColor.WHITE + " has been halted due to the fact that it could break something!");
+        sender.sendMessage("If you still wish to execute " + ChatColor.RED + commandName + ChatColor.WHITE + ", please type: " + ChatColor.GREEN + "/mvconfirm " + ChatColor.GOLD + "YES");
+        sender.sendMessage(ChatColor.GREEN + "/mvconfirm" + ChatColor.WHITE + " will only be available for 10 seconds.");
+    }
+    /**
+     * Tries to fire off the command
+     * @param sender
+     * @return
+     */
+    public boolean confirmQueuedCommand(CommandSender sender) {
+        for (QueuedCommand com : queuedCommands) {
+            if (com.getSender().equals(sender)) {
+                if(com.execute()) {
+                    sender.sendMessage(com.getSuccess());
+                    return true;
+                } else {
+                    sender.sendMessage(com.getFail());
+                    return false;
+                }
+            }
+        }
+        return false;
+    }
+    /**
+     * Cancels(invalidates) a command that has been requested. This is called when a user types something other than 'yes' or when they try to queue a second command
+     * Queuing a second command will delete the first command entirely.
+     * @param sender
+     */
+    public void cancelQueuedCommand(CommandSender sender) {
+        QueuedCommand c = null;
+        for (QueuedCommand com : queuedCommands) {
+            if (com.getSender().equals(sender)) {
+                c = com;
+            }
+        }
+        if (c != null) {
+            // Each person is allowed at most one queued command.
+            queuedCommands.remove(c);
+        }
+    }
 }

src/com/onarandombox/MultiverseCore/command/QueuedCommand.java

@@ -0,0 +1,89 @@
+package com.onarandombox.MultiverseCore.command;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Calendar;
+
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+import com.onarandombox.MultiverseCore.MultiverseCore;
+
+public class QueuedCommand {
+    
+    private String name;
+    private Object[] args;
+    private Class<?> paramTypes[];
+    private CommandSender sender;
+    private MultiverseCore plugin;
+    private Calendar timeRequested;
+    private String success;
+    private String fail;
+    
+    public QueuedCommand(String commandName, Object[] args, Class<?> partypes[], CommandSender sender, Calendar instance, MultiverseCore plugin, String success, String fail) {
+        this.plugin = plugin;
+        this.name = commandName;
+        this.args = args;
+        this.sender = sender;
+        this.timeRequested = instance;
+        this.paramTypes = partypes;
+        this.setSuccess(success);
+        this.setFail(fail);
+    }
+    
+    public CommandSender getSender() {
+        return sender;
+    }
+    
+    public boolean execute() {
+        timeRequested.add(Calendar.SECOND, 10);
+        if (timeRequested.after(Calendar.getInstance())) {
+            try {
+                Method method = plugin.getClass().getMethod(name, paramTypes);
+                try {
+                    method.invoke(plugin, args);
+                } catch (IllegalArgumentException e) {
+                    // TODO Auto-generated catch block
+                    e.printStackTrace();
+                    return false;
+                } catch (IllegalAccessException e) {
+                    // TODO Auto-generated catch block
+                    e.printStackTrace();
+                    return false;
+                } catch (InvocationTargetException e) {
+                    // TODO Auto-generated catch block
+                    e.printStackTrace();
+                    return false;
+                }
+            } catch (SecurityException e) {
+                // TODO Auto-generated catch block
+                e.printStackTrace();
+                return false;
+            } catch (NoSuchMethodException e) {
+                // TODO Auto-generated catch block
+                e.printStackTrace();
+                return false;
+            }
+            return true;
+        } else {
+            sender.sendMessage("This command has expried. Please type the original command again.");
+        }
+        return false;
+    }
+    
+    private void setSuccess(String success) {
+        this.success = success;
+    }
+    
+    public String getSuccess() {
+        return success;
+    }
+    
+    private void setFail(String fail) {
+        this.fail = fail;
+    }
+    
+    public String getFail() {
+        return fail;
+    }
+}

src/com/onarandombox/MultiverseCore/command/commands/ConfirmCommand.java

@@ -0,0 +1,30 @@
+package com.onarandombox.MultiverseCore.command.commands;
+
+import org.bukkit.ChatColor;
+import org.bukkit.command.CommandSender;
+
+import com.onarandombox.MultiverseCore.MultiverseCore;
+import com.onarandombox.MultiverseCore.command.BaseCommand;
+
+public class ConfirmCommand extends BaseCommand {
+    
+    public ConfirmCommand(MultiverseCore plugin) {
+        super(plugin);
+        name = "Confirms a command that could destroy life, the universe and everything.";
+        description = "If you have not been prompted to use this, it will not do anything.";
+        usage = "/mvconfirm" + ChatColor.GREEN + " Yes";
+        minArgs = 1;
+        maxArgs = 1;
+        identifiers.add("mvconfirm");
+    }
+    
+    @Override
+    public void execute(CommandSender sender, String[] args) {
+        if (args[0].equalsIgnoreCase("yes")) {
+            plugin.confirmQueuedCommand(sender);
+        } else {
+            plugin.cancelQueuedCommand(sender);
+        }
+    }
+    
+}

src/com/onarandombox/MultiverseCore/command/commands/DeleteCommand.java

@@ -20,11 +20,9 @@ public class DeleteCommand extends BaseCommand {
     
     @Override
     public void execute(CommandSender sender, String[] args) {
-        if (plugin.deleteWorld(args[0])) {
-            sender.sendMessage("World Deleted!");
-        } else {
-            sender.sendMessage("Error trying to delete World!");
-        }
+        
+        Class<?> paramTypes[] = {String.class};
+        plugin.queueCommand(sender, "mvdelete", "deleteWorld", args, paramTypes, "World Deleted!", "World was not deleted!");
     }
     
 }

src/com/onarandombox/utils/CommandCatcher.java

@@ -0,0 +1,5 @@
+package com.onarandombox.utils;
+
+public class CommandCatcher extends Thread {
+    
+}

src/plugin.yml

@@ -74,4 +74,8 @@ commands:
             /<command> [world] [creatures]
             /<command> -- Purges the players world of all creatures.
             /<command> creative * -- Purges the creative world of all Creatures.
-            /<command> creative creeper -- Purges the creative world of all CREEPERS.
+            /<command> creative creeper -- Purges the creative world of all CREEPERS.
+  mvconfirm:
+    description: Confirms sensitive decisions like deleting a world.
+    usage: |
+            /<command> [Yes|No]