NexusLobby/src/main/java/de/nexuslobby/modules/hologram/HologramModule.java

package de.nexuslobby.modules.hologram;

import de.nexuslobby.NexusLobby;
import de.nexuslobby.api.Module;
import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.World;
import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.configuration.file.YamlConfiguration;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Interaction;
import org.bukkit.entity.Player;
import org.bukkit.entity.TextDisplay;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerChangedWorldEvent;
import org.bukkit.event.player.PlayerInteractEntityEvent;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.player.PlayerQuitEvent;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;

public class HologramModule implements Module, Listener {

    private final Map<String, NexusHologram> holograms = new ConcurrentHashMap<>();
    private File file;
    private FileConfiguration config;

    @Override
    public String getName() { return "Holograms"; }

    @Override
    public void onEnable() {
        loadConfig();
        loadHolograms();
        Bukkit.getPluginManager().registerEvents(this, NexusLobby.getInstance());

        // Render-Task: Prüft alle 5 Ticks Sichtbarkeit und Placeholder-Updates
        Bukkit.getScheduler().runTaskTimer(NexusLobby.getInstance(), () -> {
            for (Player player : Bukkit.getOnlinePlayers()) {
                holograms.values().forEach(h -> h.renderForPlayer(player));
            }
        }, 20L, 5L);
    }

    private void loadConfig() {
        file = new File(NexusLobby.getInstance().getDataFolder(), "holograms.yml");
        config = YamlConfiguration.loadConfiguration(file);
    }

    private void loadHolograms() {
        // Vorherige Instanzen säubern
        holograms.values().forEach(NexusHologram::removeAll);
        holograms.clear();
        
        for (String id : config.getKeys(false)) {
            String worldName = config.getString(id + ".world");
            if (worldName == null) continue;
            
            World world = Bukkit.getWorld(worldName);
            if (world == null) continue;

            Location loc = new Location(world, 
                config.getDouble(id + ".x"), 
                config.getDouble(id + ".y"), 
                config.getDouble(id + ".z"));
            
            List<String> pages;
            if (config.isList(id + ".text")) {
                pages = config.getStringList(id + ".text");
            } else {
                pages = new ArrayList<>();
                pages.add(config.getString(id + ".text", "No Text"));
            }
            
            holograms.put(id, new NexusHologram(id, loc, pages));
        }
    }

    @EventHandler
    public void onInteract(PlayerInteractEntityEvent event) {
        // Nur auf Interaction-Entities reagieren (Hologramm-Hitboxen)
        if (!(event.getRightClicked() instanceof Interaction)) return;
        
        for (NexusHologram holo : holograms.values()) {
            if (holo.isInteractionEntity(event.getRightClicked().getUniqueId())) {
                holo.nextPage(event.getPlayer());
                break;
            }
        }
    }

    @EventHandler
    public void onQuit(PlayerQuitEvent event) {
        holograms.values().forEach(h -> h.removeForPlayer(event.getPlayer()));
    }

    @EventHandler
    public void onWorldChange(PlayerChangedWorldEvent event) {
        holograms.values().forEach(h -> h.removeForPlayer(event.getPlayer()));
    }

    @EventHandler
    public void onJoin(PlayerJoinEvent event) {
        // Cleanup alter Entity-Reste, die eventuell noch in der Welt schweben
        Bukkit.getScheduler().runTaskLater(NexusLobby.getInstance(), () -> {
            Player p = event.getPlayer();
            for (Entity entity : p.getWorld().getEntities()) {
                if (entity.getCustomName() != null && entity.getCustomName().startsWith("nexus_h_")) {
                    // Wenn das Hologramm nicht exakt für diesen Spieler benannt ist -> verstecken
                    if (!entity.getCustomName().endsWith("_" + p.getName())) {
                        p.hideEntity(NexusLobby.getInstance(), entity);
                    }
                }
            }
        }, 10L);
    }

    public void createHologram(String id, Location loc, List<String> pages) {
        // Falls ID bereits existiert, altes Hologramm sauber entfernen
        if (holograms.containsKey(id)) {
            removeHologram(id);
        }

        config.set(id + ".world", loc.getWorld().getName());
        config.set(id + ".x", loc.getX());
        config.set(id + ".y", loc.getY());
        config.set(id + ".z", loc.getZ());
        config.set(id + ".text", pages);
        saveHoloConfig();

        NexusHologram holo = new NexusHologram(id, loc, pages);
        holograms.put(id, holo);
    }

    public void removeHologram(String id) {
        NexusHologram holo = holograms.remove(id);
        if (holo != null) {
            // Erst für alle Spieler visuell entfernen
            for (Player player : Bukkit.getOnlinePlayers()) {
                holo.removeForPlayer(player);
            }
            // Dann Entities serverseitig löschen
            holo.removeAll();
        }
        config.set(id, null);
        saveHoloConfig();
    }

    private void saveHoloConfig() {
        try { 
            config.save(file); 
        } catch (IOException e) { 
            NexusLobby.getInstance().getLogger().severe("Konnte holograms.yml nicht speichern!");
            NexusLobby.getInstance().getLogger().severe("Fehler beim Speichern der Hologramme: " + e.getMessage());
        }
    }

    /**
     * WICHTIG: Diese Methode wird vom LobbyTabCompleter benötigt!
     * @return Set aller registrierten Hologramm-IDs
     */
    public Set<String> getHologramIds() {
        return holograms.keySet();
    }

    @Override
    public void onDisable() {
        org.bukkit.event.HandlerList.unregisterAll(this);
        holograms.values().forEach(NexusHologram::removeAll);
        holograms.clear();
    }
}