From 0daba673f890f25f7e57e46700e3c03dcbb613e4 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] Add ExecuteCommandEvent

---
 .../purpur/event/ExecuteCommandEvent.java     | 87 +++++++++++++++++++
 .../org/bukkit/command/SimpleCommandMap.java  |  9 ++
 2 files changed, 96 insertions(+)
 create mode 100644 src/main/java/net/pl3x/purpur/event/ExecuteCommandEvent.java

diff --git a/src/main/java/net/pl3x/purpur/event/ExecuteCommandEvent.java b/src/main/java/net/pl3x/purpur/event/ExecuteCommandEvent.java
new file mode 100644
index 00000000..013a8712
--- /dev/null
+++ b/src/main/java/net/pl3x/purpur/event/ExecuteCommandEvent.java
@@ -0,0 +1,87 @@
+package net.pl3x.purpur.event;
+
+import org.apache.commons.lang.Validate;
+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.NotNull;
+
+/**
+ * This event is called whenever someone runs a command
+ */
+public class ExecuteCommandEvent extends Event implements Cancellable {
+    private static final HandlerList handlers = new HandlerList();
+    private boolean cancel = false;
+    private CommandSender sender;
+    private Command command;
+
+    public ExecuteCommandEvent(@NotNull CommandSender sender, @NotNull Command command) {
+        this.sender = sender;
+        this.command = command;
+    }
+
+    /**
+     * Gets the command that the player is attempting to execute.
+     *
+     * @return Command the player is attempting to execute
+     */
+    @NotNull
+    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(@NotNull Command command) throws IllegalArgumentException {
+        Validate.notNull(command, "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
+     */
+    @NotNull
+    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(@NotNull final CommandSender sender) throws IllegalArgumentException {
+        Validate.notNull(sender, "Sender cannot be null");
+        this.sender = sender;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return cancel;
+    }
+
+    @Override
+    public void setCancelled(boolean cancel) {
+        this.cancel = cancel;
+    }
+
+    @NotNull
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    @NotNull
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+}
diff --git a/src/main/java/org/bukkit/command/SimpleCommandMap.java b/src/main/java/org/bukkit/command/SimpleCommandMap.java
index 460fda05..b87c30a3 100644
--- a/src/main/java/org/bukkit/command/SimpleCommandMap.java
+++ b/src/main/java/org/bukkit/command/SimpleCommandMap.java
@@ -147,6 +147,15 @@ public class SimpleCommandMap implements CommandMap {
             return false;
         }
 
+        // Purpur start
+        net.pl3x.purpur.event.ExecuteCommandEvent event = new net.pl3x.purpur.event.ExecuteCommandEvent(sender, target);
+        if (!event.callEvent()) {
+            return true; // cancelled
+        }
+        sender = event.getSender();
+        target = event.getCommand();
+        // 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);
-- 
2.20.1