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src/main/java/org/lunamc/uptimemonitor/UptimeMonitor.java

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+package org.lunamc.uptimemonitor;
+
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.configuration.file.FileConfiguration;
+import org.bukkit.plugin.java.JavaPlugin;
+
+import javax.lang.model.element.UnknownElementException;
+import java.net.URI;
+import java.net.URLEncoder;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.nio.charset.StandardCharsets;
+
+public final class UptimeMonitor extends JavaPlugin {
+    FileConfiguration config = getConfig();
+
+    @Override
+    public void onEnable() {
+        config.addDefault("uptime-url", "https://status.example.com/api/push/ABCDEFGHIJ");
+        config.addDefault("ping", "player-count");
+        config.options().copyDefaults(true);
+        saveConfig();
+
+        getServer().getScheduler().scheduleSyncRepeatingTask(this, new Runnable() {
+            @Override
+            public void run() {
+                getHttpRequest(pingResponse());
+            }
+        }, 0L, 300L);
+
+        getLogger().info(ChatColor.GREEN + "[Uptime Monitor]: successfully enabled!");
+    }
+
+    @Override
+    public void onDisable() {
+        getLogger().info(ChatColor.RED + "[Uptime Monitor]: successfully disabled");
+    }
+
+    private void getHttpRequest(String message, String ping) {
+        String encodedMessage = URLEncoder.encode(message, StandardCharsets.UTF_8);
+        String encodedPing = URLEncoder.encode(ping, StandardCharsets.UTF_8);
+        HttpClient client = HttpClient.newHttpClient();
+        HttpRequest request = HttpRequest.newBuilder()
+                .GET()
+                .uri(URI.create(config.getString("uptime-url") + "?msg=" + encodedMessage + "&ping=" + encodedPing))
+                .build();
+        client.sendAsync(request, HttpResponse.BodyHandlers.ofString())
+                .join();
+    }
+
+    private String pingResponse() {
+        String pingType = config.getString("ping");
+        if (pingType.equalsIgnoreCase("player-count")) {
+            return String.valueOf(getServer().getOnlinePlayers().size());
+        } else if (pingType.equalsIgnoreCase("port")) {
+            return String.valueOf(getServer().getPort());
+        } else if (pingType.equalsIgnoreCase("tps")) {
+            double[] tps = getServer().getTPS();
+            return String.valueOf(tps[0]);
+        } else if (pingType.equalsIgnoreCase("tick-time")) {
+            long[] tickTime = getServer().getTickTimes();
+            return String.valueOf(tickTime[0] / 1000 / 1000); // Nano / micro / milli
+        } else {
+            return "0";
+        }
+    }
+
+    private String messageResponse() {
+        String messageType = config.getString("ping");
+        if (messageType.equalsIgnoreCase("player-count")) {
+            return "Player count"
+        }
+    }
+}

src/main/resources/config.yml

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+uptime-url: "https://status.example.com/api/push/ABCDEFGHIJ"
+ping: "player-count"

src/main/resources/plugin.yml

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+name: UptimeMonitor
+version: '${version}'
+main: org.lunamc.uptimemonitor.UptimeMonitor
+api-version: 1.18
+authors: [ SteveO718 ]
+description: Hooks into uptime-kuma instance and relays online players and uptime status
+website: https://lunamc.org