From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Fri, 31 May 2019 00:08:28 -0500
Subject: [PATCH] ExecuteCommandEvent


diff --git a/src/main/java/org/bukkit/command/SimpleCommandMap.java b/src/main/java/org/bukkit/command/SimpleCommandMap.java
index 5df19bd701c67506689fc7f49d91f99ebfbc83f0..a09b5458191eb5df4787859b72a37fa1fa2bffba 100644
--- a/src/main/java/org/bukkit/command/SimpleCommandMap.java
+++ b/src/main/java/org/bukkit/command/SimpleCommandMap.java
@@ -153,6 +153,19 @@ public class SimpleCommandMap implements CommandMap {
             return false;
         }
 
+        // Purpur start
+        String[] parsedArgs = Arrays.copyOfRange(args, 1, args.length);
+        org.purpurmc.purpur.event.ExecuteCommandEvent event = new org.purpurmc.purpur.event.ExecuteCommandEvent(sender, target, sentCommandLabel, parsedArgs);
+        if (!event.callEvent()) {
+            return true; // cancelled
+        }
+
+        sender = event.getSender();
+        target = event.getCommand();
+        sentCommandLabel = event.getLabel();
+        parsedArgs = event.getArgs();
+        // Purpur end
+
         // Paper start - Plugins do weird things to workaround normal registration
         if (target.timings == null) {
             target.timings = co.aikar.timings.TimingsManager.getCommandTiming(null, target);
@@ -162,7 +175,7 @@ public class SimpleCommandMap implements CommandMap {
         try {
             try (co.aikar.timings.Timing ignored = target.timings.startTiming()) { // Paper - use try with resources
             // Note: we don't return the result of target.execute as thats success / failure, we return handled (true) or not handled (false)
-            target.execute(sender, sentCommandLabel, Arrays.copyOfRange(args, 1, args.length));
+            target.execute(sender, sentCommandLabel, parsedArgs); // Purpur
             } // target.timings.stopTiming(); // Spigot // Paper
         } catch (CommandException ex) {
             server.getPluginManager().callEvent(new com.destroystokyo.paper.event.server.ServerExceptionEvent(new com.destroystokyo.paper.exception.ServerCommandException(ex, target, sender, args))); // Paper
diff --git a/src/main/java/org/purpurmc/purpur/event/ExecuteCommandEvent.java b/src/main/java/org/purpurmc/purpur/event/ExecuteCommandEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..55feef2321c7d966c72a33a58cf10136a9cacfa6
--- /dev/null
+++ b/src/main/java/org/purpurmc/purpur/event/ExecuteCommandEvent.java
@@ -0,0 +1,127 @@
+package org.purpurmc.purpur.event;
+
+import com.google.common.base.Preconditions;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+import org.jetbrains.annotations.ApiStatus;
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+/**
+ * This event is called whenever someone runs a command
+ */
+@NullMarked
+public class ExecuteCommandEvent extends Event implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
+    private boolean cancel = false;
+    private CommandSender sender;
+    private Command command;
+    private String label;
+    private @Nullable String[] args;
+
+    @ApiStatus.Internal
+    public ExecuteCommandEvent(CommandSender sender, Command command, String label, @Nullable String[] args) {
+        this.sender = sender;
+        this.command = command;
+        this.label = label;
+        this.args = args;
+    }
+
+    /**
+     * Gets the command that the player is attempting to execute.
+     *
+     * @return Command the player is attempting to execute
+     */
+    public Command getCommand() {
+        return command;
+    }
+
+    /**
+     * Sets the command that the player will execute.
+     *
+     * @param command New command that the player will execute
+     * @throws IllegalArgumentException if command is null or empty
+     */
+    public void setCommand(Command command) throws IllegalArgumentException {
+        Preconditions.checkArgument(command != null, "Command cannot be null");
+        this.command = command;
+    }
+
+    /**
+     * Gets the sender that this command will be executed as.
+     *
+     * @return Sender this command will be executed as
+     */
+    public CommandSender getSender() {
+        return sender;
+    }
+
+    /**
+     * Sets the sender that this command will be executed as.
+     *
+     * @param sender New sender which this event will execute as
+     * @throws IllegalArgumentException if the sender provided is null
+     */
+    public void setSender(final CommandSender sender) throws IllegalArgumentException {
+        Preconditions.checkArgument(sender != null, "Sender cannot be null");
+        this.sender = sender;
+    }
+
+    /**
+     * Get the label used to execute this command
+     *
+     * @return Label used to execute this command
+     */
+    public String getLabel() {
+        return label;
+    }
+
+    /**
+     * Set the label used to execute this command
+     *
+     * @param label Label used
+     */
+    public void setLabel(String label) {
+        this.label = label;
+    }
+
+    /**
+     * Get the args passed to the command
+     *
+     * @return Args passed to the command
+     */
+    public String[] getArgs() {
+        return args;
+    }
+
+    /**
+     * Set the args passed to the command
+     *
+     * @param args Args passed to the command
+     */
+    public void setArgs(String[] args) {
+        this.args = args;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return cancel;
+    }
+
+    @Override
+    public void setCancelled(boolean cancel) {
+        this.cancel = cancel;
+    }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+}