Purpur/patches/server/0203-Add-uptime-command.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Thu, 1 Jul 2021 15:48:02 -0500
Subject: [PATCH] Add uptime command


diff --git a/src/main/java/net/minecraft/commands/Commands.java b/src/main/java/net/minecraft/commands/Commands.java
index c137f5299e4a9e2f33aeef77818c62c3805bdc0d..9e7cc8bf867b6e4f86b55e1f1d3a1cb6233c90f1 100644
--- a/src/main/java/net/minecraft/commands/Commands.java
+++ b/src/main/java/net/minecraft/commands/Commands.java
@@ -210,6 +210,7 @@ public class Commands {
             org.purpurmc.purpur.command.CreditsCommand.register(this.dispatcher); // Purpur
             org.purpurmc.purpur.command.DemoCommand.register(this.dispatcher); // Purpur
             org.purpurmc.purpur.command.PingCommand.register(this.dispatcher); // Purpur
+            org.purpurmc.purpur.command.UptimeCommand.register(this.dispatcher); // Purpur
             org.purpurmc.purpur.command.TPSBarCommand.register(this.dispatcher); // Purpur
         }
 
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 38eee8b34caaee7fb4e05dd08b1854afd0052368..a859c915117d7660673f580864b3ba2aeb1d9480 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -293,6 +293,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
     public org.bukkit.command.RemoteConsoleCommandSender remoteConsole;
     //public ConsoleReader reader; // Paper
     public static int currentTick = 0; // Paper - Further improve tick loop
+    public static final long startTimeMillis = System.currentTimeMillis();
     public java.util.Queue<Runnable> processQueue = new java.util.concurrent.ConcurrentLinkedQueue<Runnable>();
     public int autosavePeriod;
     public Commands vanillaCommandDispatcher;
diff --git a/src/main/java/org/purpurmc/purpur/PurpurConfig.java b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
index 792255c3f9499180a746175bf07f2890577332b5..f5a91db8035509ce42315a75205e9f0ae13ed127 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
@@ -178,6 +178,7 @@ public class PurpurConfig {
     public static String pingCommandOutput = "<green>%s's ping is %sms";
     public static String tpsbarCommandOutput = "<green>Tpsbar toggled <onoff> for <target>";
     public static String dontRunWithScissors = "<red><italic>Don't run with scissors!";
+    public static String uptimeCommandOutput = "<green>Server uptime is <uptime>";
     public static String unverifiedUsername = "default";
     private static void messages() {
         cannotRideMob = getString("settings.messages.cannot-ride-mob", cannotRideMob);
@@ -190,6 +191,7 @@ public class PurpurConfig {
         pingCommandOutput = getString("settings.messages.ping-command-output", pingCommandOutput);
         tpsbarCommandOutput = getString("settings.messages.tpsbar-command-output", tpsbarCommandOutput);
         dontRunWithScissors = getString("settings.messages.dont-run-with-scissors", dontRunWithScissors);
+        uptimeCommandOutput = getString("settings.messages.uptime-command-output", uptimeCommandOutput);
         unverifiedUsername = getString("settings.messages.unverified-username", unverifiedUsername);
     }
 
@@ -244,6 +246,15 @@ public class PurpurConfig {
     public static int commandTPSBarTickInterval = 20;
     public static boolean commandGamemodeRequiresPermission = false;
     public static boolean hideHiddenPlayersFromEntitySelector = false;
+    public static String uptimeFormat = "<days><hours><minutes><seconds>";
+    public static String uptimeDay = "%02d day, ";
+    public static String uptimeDays = "%02d days, ";
+    public static String uptimeHour = "%02d hour, ";
+    public static String uptimeHours = "%02d hours, ";
+    public static String uptimeMinute = "%02d minute, and ";
+    public static String uptimeMinutes = "%02d minutes, and ";
+    public static String uptimeSecond = "%02d second";
+    public static String uptimeSeconds = "%02d seconds";
     private static void commandSettings() {
         commandTPSBarTitle = getString("settings.command.tpsbar.title", commandTPSBarTitle);
         commandTPSBarProgressOverlay = BossBar.Overlay.valueOf(getString("settings.command.tpsbar.overlay", commandTPSBarProgressOverlay.name()));
@@ -257,6 +268,15 @@ public class PurpurConfig {
         commandTPSBarTickInterval = getInt("settings.command.tpsbar.tick-interval", commandTPSBarTickInterval);
         commandGamemodeRequiresPermission = getBoolean("settings.command.gamemode.requires-specific-permission", commandGamemodeRequiresPermission);
         hideHiddenPlayersFromEntitySelector = getBoolean("settings.command.hide-hidden-players-from-entity-selector", hideHiddenPlayersFromEntitySelector);
+        uptimeFormat = getString("settings.command.uptime.format", uptimeFormat);
+        uptimeDay = getString("settings.command.uptime.day", uptimeDay);
+        uptimeDays = getString("settings.command.uptime.days", uptimeDays);
+        uptimeHour = getString("settings.command.uptime.hour", uptimeHour);
+        uptimeHours = getString("settings.command.uptime.hours", uptimeHours);
+        uptimeMinute = getString("settings.command.uptime.minute", uptimeMinute);
+        uptimeMinutes = getString("settings.command.uptime.minutes", uptimeMinutes);
+        uptimeSecond = getString("settings.command.uptime.second", uptimeSecond);
+        uptimeSeconds = getString("settings.command.uptime.seconds", uptimeSeconds);
     }
 
     public static int barrelRows = 3;
diff --git a/src/main/java/org/purpurmc/purpur/command/UptimeCommand.java b/src/main/java/org/purpurmc/purpur/command/UptimeCommand.java
new file mode 100644
index 0000000000000000000000000000000000000000..2a6685b016cca5a8be554b3b8a928ced8d3cebba
--- /dev/null
+++ b/src/main/java/org/purpurmc/purpur/command/UptimeCommand.java
@@ -0,0 +1,55 @@
+package org.purpurmc.purpur.command;
+
+import com.mojang.brigadier.CommandDispatcher;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.minimessage.MiniMessage;
+import net.kyori.adventure.text.minimessage.tag.resolver.Placeholder;
+import net.minecraft.commands.CommandSourceStack;
+import net.minecraft.commands.Commands;
+import net.minecraft.server.MinecraftServer;
+import org.purpurmc.purpur.PurpurConfig;
+
+import java.util.concurrent.TimeUnit;
+import java.util.function.Function;
+
+public class UptimeCommand {
+    public static void register(CommandDispatcher<CommandSourceStack> dispatcher) {
+        dispatcher.register(Commands.literal("uptime")
+                .requires((listener) -> listener.hasPermission(2))
+                .executes((context) -> execute(context.getSource()))
+        ).setPermission("bukkit.command.uptime");
+    }
+
+    private static int execute(CommandSourceStack sender) {
+        Data data = new Data();
+
+        data.format = PurpurConfig.uptimeFormat;
+        data.hide = true;
+        data.millis = System.currentTimeMillis() - MinecraftServer.startTimeMillis;
+
+        process(data, "<days>", PurpurConfig.uptimeDay, PurpurConfig.uptimeDays, TimeUnit.DAYS, TimeUnit.MILLISECONDS::toDays);
+        process(data, "<hours>", PurpurConfig.uptimeHour, PurpurConfig.uptimeHours, TimeUnit.HOURS, TimeUnit.MILLISECONDS::toHours);
+        process(data, "<minutes>", PurpurConfig.uptimeMinute, PurpurConfig.uptimeMinutes, TimeUnit.MINUTES, TimeUnit.MILLISECONDS::toMinutes);
+        data.hide = false; // never hide seconds
+        process(data, "<seconds>", PurpurConfig.uptimeSecond, PurpurConfig.uptimeSeconds, TimeUnit.SECONDS, TimeUnit.MILLISECONDS::toSeconds);
+
+        Component output = MiniMessage.miniMessage().deserialize(PurpurConfig.uptimeCommandOutput, Placeholder.unparsed("uptime", data.format));
+        sender.sendSuccess(output, false);
+        return 1;
+    }
+
+    private static void process(Data data, String replace, String singular, String plural, TimeUnit unit, Function<Long, Long> func) {
+        if (data.format.contains(replace)) {
+            long val = func.apply(data.millis);
+            if (data.hide) data.hide = val == 0;
+            if (!data.hide) data.millis -= unit.toMillis(val);
+            data.format = data.format.replace(replace, data.hide ? "" : String.format(val == 1 ? singular : plural, val));
+        }
+    }
+
+    private static class Data {
+        String format;
+        boolean hide;
+        long millis;
+    }
+}