ExcellentCrates Placeholder Expansion

package com.cyvertray.ecratesplaceholder;

import java.lang.reflect.Method;
import java.util.Map;
import me.clip.placeholderapi.expansion.PlaceholderExpansion;
import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.plugin.Plugin;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

public class ExcellentCratesPlaceholderExpansion extends PlaceholderExpansion {

    @Override public @NotNull String getIdentifier() { return "ec"; }
    @Override public @NotNull String getAuthor() { return "Cyvertray_"; }
    @Override public @NotNull String getVersion() { return "Paper/Spigot/Purpur 26.2 Java 25"; }
    @Override public boolean persist() { return true; }

    @Override
    public @Nullable String onPlaceholderRequest(Player player, @NotNull String params) {
        if (player == null) return "0";

        if (params.startsWith("keyz_")) {
            String requestedKeyId = params.substring("keyz_".length());
            Plugin ecPlugin = Bukkit.getPluginManager().getPlugin("ExcellentCrates");
            if (ecPlugin == null) return "0";

            try {
                Object userManager = ecPlugin.getClass().getMethod("getUserManager").invoke(ecPlugin);
                Object crateUser = userManager.getClass().getMethod("getOrFetch", Player.class).invoke(userManager, player);

                if (crateUser == null) return "0";

                Method getKeysMap = crateUser.getClass().getMethod("getKeysMap");
                Map<?, ?> keys = (Map<?, ?>) getKeysMap.invoke(crateUser);

                if (keys == null || keys.isEmpty()) return "0";

                for (Map.Entry<?, ?> entry : keys.entrySet()) {
                    if (String.valueOf(entry.getKey()).equalsIgnoreCase(requestedKeyId)) {
                        return String.valueOf(entry.getValue());
                    }
                }
                return "0";

            } catch (Exception e) {
                return "0";
            }
        }

        if (params.startsWith("physicalkeyz_")) {
            String requestedKeyId = params.substring("physicalkeyz_".length());
            Plugin ecPlugin = Bukkit.getPluginManager().getPlugin("ExcellentCrates");
            if (ecPlugin == null) return "0";

            try {
                Object keyManager = ecPlugin.getClass().getMethod("getKeyManager").invoke(ecPlugin);

                Method getKeyById = keyManager.getClass().getMethod("getKeyById", String.class);
                Object crateKey = getKeyById.invoke(keyManager, requestedKeyId);

                if (crateKey == null) return "0";

                Method isVirtual = crateKey.getClass().getMethod("isVirtual");
                if ((boolean) isVirtual.invoke(crateKey)) return "0";

                Method getKeysAmount = keyManager.getClass().getMethod(
                        "getKeysAmount",
                        Player.class,
                        crateKey.getClass()
                );

                Object amount = getKeysAmount.invoke(keyManager, player, crateKey);

                return String.valueOf(amount);

            } catch (Exception e) {
                return "0";
            }
        }

                return null;
    }
}