first commit

.gitignore

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+*.iml
+.idea/
+target/
+dependency-reduced-pom.xml

README.md

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+# SimpleCommandsLegacy
+
+## How to disable commands
+
+Create config.yml at plugin configuration directory, then:
+```yaml
+disabledCommands:
+ - suicide # disables /suicide (requires simplecommands.suicide)
+ - pingall # disables /pingall (requires simplecommands.pingall)
+ - ping # disables /ping (doesn't require any permissions)
+```

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>xyz.acrylicstyle</groupId>
+    <artifactId>SimpleCommandsLegacy</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>8</source>
+                    <target>8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+    <repositories>
+        <repository>
+            <id>spigot-repo</id>
+            <url>https://hub.spigotmc.org/nexus/content/repositories/snapshots/</url>
+        </repository>
+        <repository>
+            <id>acrylic-repo</id>
+            <url>https://repo.acrylicstyle.xyz/</url>
+        </repository>
+    </repositories>
+    <dependencies>
+        <dependency>
+            <groupId>org.spigotmc</groupId>
+            <artifactId>spigot-api</artifactId>
+            <version>1.8-R0.1-SNAPSHOT</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>xyz.acrylicstyle</groupId>
+            <artifactId>NMSAPI-1.8.8</artifactId>
+            <version>0.0.46</version>
+        </dependency>
+        <dependency>
+            <groupId>xyz.acrylicstyle</groupId>
+            <artifactId>Util</artifactId>
+            <version>0.8.17</version>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+</project>

src/main/java/xyz/acrylicstyle/simplecommands/SimpleCommands.java

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+package xyz.acrylicstyle.simplecommands;
+
+import org.bukkit.Bukkit;
+import org.bukkit.event.Listener;
+import org.bukkit.plugin.java.JavaPlugin;
+import xyz.acrylicstyle.simplecommands.commands.Ping;
+import xyz.acrylicstyle.simplecommands.commands.PingAll;
+import xyz.acrylicstyle.simplecommands.commands.Suicide;
+
+import java.util.List;
+import java.util.Objects;
+
+@SuppressWarnings("unused")
+public class SimpleCommands extends JavaPlugin implements Listener {
+    @Override
+    public void onEnable() {
+        List<String> disabledCommands = this.getConfig().getStringList("disabledCommands");
+        if (!disabledCommands.contains("ping")) Objects.requireNonNull(Bukkit.getPluginCommand("ping")).setExecutor(new Ping());
+        if (!disabledCommands.contains("pingall")) Objects.requireNonNull(Bukkit.getPluginCommand("pingall")).setExecutor(new PingAll());
+        if (!disabledCommands.contains("suicide")) Objects.requireNonNull(Bukkit.getPluginCommand("suicide")).setExecutor(new Suicide());
+        Bukkit.getPluginManager().registerEvents(this, this);
+    }
+}

src/main/java/xyz/acrylicstyle/simplecommands/commands/Ping.java

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+package xyz.acrylicstyle.simplecommands.commands;
+
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+public class Ping implements CommandExecutor {
+    @Override
+    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
+        if (!(sender instanceof Player)) {
+            sender.sendMessage(ChatColor.RED + "This command cannot be invoked from console.");
+            return true;
+        }
+        try {
+            if (args.length == 1) {
+                Player player = Bukkit.getPlayer(args[0]);
+                sender.sendMessage(ChatColor.GREEN + "Ping: " + PingAll.getPing(player) + "ms");
+            } else {
+                Player player = (Player) sender;
+                player.sendMessage(ChatColor.GREEN + "Ping: " + PingAll.getPing(player) + "ms");
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return true;
+    }
+}

src/main/java/xyz/acrylicstyle/simplecommands/commands/PingAll.java

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+package xyz.acrylicstyle.simplecommands.commands;
+
+import org.bukkit.ChatColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import xyz.acrylicstyle.simplecommands.utils.Utils;
+
+import java.lang.reflect.InvocationTargetException;
+
+public class PingAll implements CommandExecutor {
+    @Override
+    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
+        Utils.getOnlinePlayers().forEach(player -> {
+            try {
+                sender.sendMessage(ChatColor.GREEN + player.getName() + "'s ping: " + getPing(player) + "ms");
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        });
+        return true;
+    }
+
+    static String getPing(Player player) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException, NoSuchFieldException {
+        Object craftPlayer = Utils.getHandle(player);
+        int ping = (int) craftPlayer.getClass().getField("ping").get(craftPlayer);
+        String message;
+        if (ping <= 5) message = "" + net.md_5.bungee.api.ChatColor.LIGHT_PURPLE + ping;
+        else if (ping <= 50) message = "" + net.md_5.bungee.api.ChatColor.GREEN + ping;
+        else if (ping <= 150) message = "" + net.md_5.bungee.api.ChatColor.YELLOW + ping;
+        else if (ping <= 250) message = "" + net.md_5.bungee.api.ChatColor.GOLD + ping;
+        else if (ping <= 350) message = "" + net.md_5.bungee.api.ChatColor.RED + ping;
+        else message = "" + net.md_5.bungee.api.ChatColor.DARK_RED + ping;
+        return message;
+    }
+}

src/main/java/xyz/acrylicstyle/simplecommands/commands/Suicide.java

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+package xyz.acrylicstyle.simplecommands.commands;
+
+import org.bukkit.ChatColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+public class Suicide implements CommandExecutor {
+    public boolean onCommand(CommandSender sender, Command command, String cmd, String[] args) {
+        if (!(sender instanceof Player)) {
+            sender.sendMessage(ChatColor.RED + "This command cannot be invoked from console.");
+            return true;
+        }
+        Player player = (Player) sender;
+        player.setHealth(0.0D);
+        player.sendMessage(ChatColor.GOLD + "You took your own life.");
+        return true;
+    }
+}

src/main/java/xyz/acrylicstyle/simplecommands/utils/Utils.java

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+package xyz.acrylicstyle.simplecommands.utils;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import util.CollectionList;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public final class Utils {
+    private Utils() {}
+
+    public static CollectionList<Player> getOnlinePlayers() {
+        CollectionList<Player> players = new CollectionList<>();
+        players.addAll(Bukkit.getOnlinePlayers());
+        return players;
+    }
+
+    public static Object getHandle(Object instance) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
+        Method method;
+        try {
+            method = instance.getClass().getDeclaredMethod("getHandle");
+        } catch (NoSuchMethodException e) {
+            method = instance.getClass().getSuperclass().getDeclaredMethod("getHandle");
+        }
+        method.setAccessible(true);
+        return method.invoke(instance);
+    }
+}

src/main/resources/plugin.yml

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+name: SimpleCommandsLegacy
+main: xyz.acrylicstyle.simplecommands.SimpleCommands
+version: 1.0-SNAPSHOT
+commands:
+  suicide:
+    description: "Kills yourself. Why would you do that?"
+    permission: simplecommands.suicide
+  ping:
+    description: "Shows your ping"
+  pingall:
+    description: "Shows everyone's ping"
+    permission: simplecommands.pingall