package com.io.yutian.verify;

import com.io.yutian.mclive.Main;
import org.bukkit.Bukkit;
import org.bukkit.entity.Player;

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.util.Base64;

public class AESUtil {

    private static final String KEY_ALGORITHM = "AES";
    // AES/ECB/PKCS5Padding
    public static final String DEFAULT_CIPHER_ALGORITHM = "101101000011010100110011010101010000011000010110010001100100011010010110111001100111";

    // 将二进制字符串转换为普通字符串
    public static String convertString(String binaryString) {
        StringBuilder result = new StringBuilder();
        // 每8位二进制表示一个字符
        for (int i = 0; i < binaryString.length(); i += 8) {
            // 获取8位二进制子串
            String byteString = binaryString.substring(i, i + 8);
            // 将二进制字符串转换为十进制整数
            int charCode = Integer.parseInt(byteString, 2);
            // 将十进制整数转换为字符
            result.append((char) charCode);
        }

        return result.toString();
    }

    public static boolean isVerifyCheck(Player p, String pluginName, String roomId){
        if(!Main.check_plugin){
            return false;
        }
        PluginVerifyResult verifyResult = VerifyHandler.verify("127.0.0.1",pluginName,roomId);
        if (!verifyResult.equals(PluginVerifyResult.VERIFY_SUCCESS)) {
            if(verifyResult == PluginVerifyResult.USER_STATE_DISABLE){
                Bukkit.getConsoleSender().sendMessage("[验证日志 - 拦截] "+p.getName()+" 的直播间授权已到期.");
                p.sendMessage("§c[系统]§a验证尚未通过,您的直播间授权已到期.");
            } else
            if(verifyResult == PluginVerifyResult.FAIL_CODE){
                Bukkit.getConsoleSender().sendMessage("[验证日志 - 拦截] "+p.getName()+" 的直播间尚未进行授权. "+roomId);
                p.sendMessage("§c[系统]§a验证尚未通过,直播间§e<"+roomId+">§a尚未进行授权.");
            } else
            if(verifyResult == PluginVerifyResult.FAIL_TIMEOUT){
                Bukkit.getConsoleSender().sendMessage("[验证日志 - 拦截] "+p.getName()+" 的本地网络有问题,无法连接验证服务器.");
                p.sendMessage("§c[系统]§a验证尚未通过,您当前的网络环境有问题.");
            } else {
                Bukkit.getConsoleSender().sendMessage("[验证日志 - 拦截] "+p.getName()+" 的无法通过验证. "+verifyResult);
                p.sendMessage("§c[系统]§a验证尚未通过,无法连接直播间,请联系管理员。§c§l#" + verifyResult);
            }
            return true;
        }
        return false;
    }

    public static String getAESRandomKey() {
        SecureRandom random = new SecureRandom();
        long randomKey = random.nextLong();
        return String.valueOf(randomKey);
    }

    public static String encrypt(String content, String key) {
        try {
            Cipher cipher = Cipher.getInstance(convertString("0100000101000101010100110010111101000101010000110100001000101111010100000100"+DEFAULT_CIPHER_ALGORITHM));
            byte[] byteContent = content.getBytes("utf-8");
            cipher.init(Cipher.ENCRYPT_MODE, getSecretKey(key));
            byte[] result = cipher.doFinal(byteContent);
            return byte2Base64(result);
        } catch (Exception ex) {
        }
        return null;
    }

    public static String decrypt(String content, String key) {
        try {
            Cipher cipher = Cipher.getInstance(convertString("0100000101000101010100110010111101000101010000110100001000101111010100000100"+DEFAULT_CIPHER_ALGORITHM));
            cipher.init(Cipher.DECRYPT_MODE, getSecretKey(key));
            byte[] result = cipher.doFinal(base642Byte(content));
            return new String(result, "utf-8");
        } catch (Exception ex) {
        }
        return null;
    }

    private static SecretKeySpec getSecretKey(final String key) {
        try {
            KeyGenerator kg = KeyGenerator.getInstance(KEY_ALGORITHM);
            SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
            random.setSeed(key.getBytes());
            kg.init(128, random);
            SecretKey secretKey = kg.generateKey();
            return new SecretKeySpec(secretKey.getEncoded(), KEY_ALGORITHM);
        } catch (NoSuchAlgorithmException ex) {
        }
        return null;
    }

    private static String byte2Base64(byte[] bytes) {
        return Base64.getEncoder().encodeToString(bytes);
    }

    private static byte[] base642Byte(String base64Key) {
        return Base64.getDecoder().decode(base64Key);
    }
}