Upload files to "src/main/java/com/wulliestudio/tab"

src/main/java/com/wulliestudio/tab/TabPlugin.java

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+package com.wulliestudio.tab;
+
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.java.JavaPlugin;
+
+import java.text.DecimalFormat;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+public class TabPlugin extends JavaPlugin {
+
+    private final DecimalFormat tpsFormat = new DecimalFormat("#0.0");
+    private long enableMillis;
+
+    @Override
+    public void onEnable() {
+        saveDefaultConfig();
+
+        // record plugin enable time (server uptime from onEnable)
+        this.enableMillis = System.currentTimeMillis();
+
+        long interval = Math.max(1L, getConfig().getLong("update-interval-ticks", 20L));
+
+        // Folia global region scheduler for UI updates (safe for TAB)
+        Bukkit.getGlobalRegionScheduler().runAtFixedRate(
+                this,
+                task -> updateAllPlayersTab(),
+                1L,
+                interval
+        );
+
+        getLogger().info("FoliaTab enabled (Folia-safe). Update interval: " + interval + " ticks");
+    }
+
+    @Override
+    public void onDisable() {
+        getLogger().info("FoliaTab disabled.");
+    }
+
+    private void updateAllPlayersTab() {
+        double tps = getTPS();
+        String tpsFormatted = tpsFormat.format(tps);
+
+        List<String> headerLines = getConfig().getStringList("header");
+        List<String> footerLines = getConfig().getStringList("footer");
+        String serverName = getConfig().getString("server-name", "Minecraft Server");
+
+        for (Player player : Bukkit.getOnlinePlayers()) {
+            String headerRaw = String.join("\n", headerLines);
+            String footerRaw = String.join("\n", footerLines);
+
+            headerRaw = applyPlaceholders(headerRaw, player, serverName, tpsFormatted);
+            footerRaw = applyPlaceholders(footerRaw, player, serverName, tpsFormatted);
+
+            Component header = LegacyComponentSerializer.legacyAmpersand().deserialize(headerRaw);
+            Component footer = LegacyComponentSerializer.legacyAmpersand().deserialize(footerRaw);
+
+            // Send header/footer (Folia-safe from global region scheduler)
+            try {
+                player.sendPlayerListHeaderAndFooter(header, footer);
+            } catch (NoSuchMethodError e) {
+                // Fallback to separate methods if available
+                try {
+                    player.sendPlayerListHeader(header);
+                    player.sendPlayerListFooter(footer);
+                } catch (Throwable t) {
+                    getLogger().warning("Failed to set header/footer for " + player.getName() + ": " + t.getMessage());
+                }
+            } catch (Throwable t) {
+                getLogger().warning("Failed to set header/footer for " + player.getName() + ": " + t.getMessage());
+            }
+        }
+    }
+
+    private String applyPlaceholders(String input, Player player, String serverName, String tps) {
+        return input
+                .replace("%server_name%", serverName)
+                .replace("%tps%", tps)
+                .replace("%ping%", String.valueOf(player.getPing()))
+                .replace("%player_name%", player.getName())
+                .replace("%uptime%", formatUptime(System.currentTimeMillis() - enableMillis));
+    }
+
+    private String formatUptime(long millis) {
+        long seconds = TimeUnit.MILLISECONDS.toSeconds(millis);
+
+        long days = seconds / 86_400;
+        seconds %= 86_400;
+        long hours = seconds / 3_600;
+        seconds %= 3_600;
+        long minutes = seconds / 60;
+        seconds %= 60;
+
+        return String.format("%02d:%02d:%02d:%02d", days, hours, minutes, seconds);
+    }
+
+    private double getTPS() {
+        try {
+            double[] tpsArr = Bukkit.getServer().getTPS();
+            if (tpsArr != null && tpsArr.length > 0) return tpsArr[0];
+        } catch (Throwable ignored) { }
+        return 20.0;
+    }
+}
+