023_多链钱包管理全解析：从Cosmos SDK到2025年统一抽象层的跨链资产管理安全实践

┌─────────────────────────────────────────────────────────────────┐
│                     用户界面层（UI）                            │
│  ┌──────────┐  ┌──────────┐  ┌──────────┐  ┌───────────────┐     │
│  │资产概览  │  │交易管理  │  │跨链操作  │  │安全设置      │     │
│  └──────────┘  └──────────┘  └──────────┘  └───────────────┘     │
├─────────────────────────────────────────────────────────────────┤
│                     应用逻辑层                                   │
│  ┌──────────┐  ┌──────────┐  ┌──────────┐  ┌───────────────┐     │
│  │抽象账户  │  │交易构建  │  │风险评估  │  │密钥管理      │     │
│  │管理      │  │引擎      │  │系统      │  │服务          │     │
│  └──────────┘  └──────────┘  └──────────┘  └───────────────┘     │
├─────────────────────────────────────────────────────────────────┤
│                     区块链适配层                                 │
│  ┌──────────┐  ┌──────────┐  ┌──────────┐  ┌───────────────┐     │
│  │EVM链适配 │  │Solana适配│  │Cosmos适配│  │跨链桥适配    │     │
│  └──────────┘  └──────────┘  └──────────┘  └───────────────┘     │
├─────────────────────────────────────────────────────────────────┤
│                     安全核心层                                   │
│  ┌──────────┐  ┌──────────┐  ┌──────────┐  ┌───────────────┐     │
│  │密钥存储  │  │签名服务  │  │隔离环境  │  │安全审计      │     │
│  └──────────┘  └──────────┘  └──────────┘  └───────────────┘     │
└─────────────────────────────────────────────────────────────────┘

┌─────────────────────────────────────────────────────────────────┐
│                          多链钱包核心                             │
├─────────────────┬──────────────────┬───────────────────┬───────┤
│ 密钥管理系统    │  统一交易构建器  │    安全审计模块   │ 其他  │
└─────────────────┴──────────────────┴───────────────────┴───────┘
         │                  │                      │
┌────────▼─────────┐ ┌───────▼───────────┐ ┌─────▼────────────┐
│ 多链协议适配器   │ │   资产索引服务    │ │   风险评估引擎   │
├────────┬─────────┤ └───────────────────┘ └──────────────────┘
│        │         │
▼        ▼         ▼
┌─────────────────────────────────────────────────────────────────┐
│             区块链网络（EVM、Solana、Cosmos等）                  │
└─────────────────────────────────────────────────────────────────┘

// 多链钱包中Cosmos账户抽象示例代码
class CosmosAccount {
  constructor(hdNode, chainId, prefix) {
    this.hdNode = hdNode;
    this.chainId = chainId;
    this.prefix = prefix; // 如 'cosmos', 'osmo', 'juno'等
    this.deriveAccount();
  }

  deriveAccount() {
    // Cosmos标准派生路径: m/44'/118'/0'/0/0
    const derivationPath = `m/44'/118'/0'/0/0`;
    this.privateKey = this.hdNode.derivePath(derivationPath).privateKey;
    this.publicKey = secp256k1.publicKeyCreate(this.privateKey);
    this.address = this.getAddressFromPublicKey(this.publicKey);
  }

  getAddressFromPublicKey(publicKey) {
    // 生成Cosmos格式地址 (bech32编码)
    const address = ripemd160(sha256(publicKey)).slice(0, 20);
    return bech32.encode(this.prefix, bech32.toWords(address));
  }

  async signTransaction(tx, fee, memo = '') {
    // 构建和签名Cosmos交易
    const signDoc = {
      chain_id: this.chainId,
      account_number: tx.accountNumber,
      sequence: tx.sequence,
      fee: fee,
      msgs: tx.messages,
      memo: memo
    };

    const signBytes = serializeSignDoc(signDoc);
    const signature = secp256k1.sign(signBytes, this.privateKey);
    
    return {
      signed: signDoc,
      signature: {
        signature: signature.signature,
        pub_key: {
          type: 'tendermint/PubKeySecp256k1',
          value: encodeBase64(this.publicKey)
        }
      }
    };
  }
}

// IBC跨链转账消息构建示例
function buildIBCTransferMsg(params) {
  const {
    sourcePort,
    sourceChannel,
    amount,
    denom,
    sender,
    receiver,
    timeoutHeight,
    timeoutTimestamp
  } = params;

  return {
    type: 'cosmos-sdk/MsgTransfer',
    value: {
      source_port: sourcePort,
      source_channel: sourceChannel,
      token: {
        denom: denom,
        amount: amount
      },
      sender: sender,
      receiver: receiver,
      timeout_height: timeoutHeight,
      timeout_timestamp: timeoutTimestamp
    }
  };
}

// Cosmos多链钱包安全配置示例
const cosmosWalletConfig = {
  // 链配置
  chains: {
    'cosmoshub-4': {
      chainId: 'cosmoshub-4',
      prefix: 'cosmos',
      rpcUrl: 'https://cosmos-rpc.polkachu.com/',
      restUrl: 'https://cosmos-rest.polkachu.com/',
      feeDenom: 'uatom',
      defaultGasPrice: '0.0025uatom',
      // 安全配置
      security: {
        maxTxAmount: '10000000uatom',
        requireDestinationTag: false,
        ibcChannels: {
          'channel-1': { // Osmosis通道
            counterpartyChainId: 'osmosis-1',
            trusted: true,
            lastVerifiedHeight: 8000000
          },
          'channel-20': { // Juno通道
            counterpartyChainId: 'juno-1',
            trusted: true,
            lastVerifiedHeight: 5000000
          }
        }
      }
    },
    'osmosis-1': {
      chainId: 'osmosis-1',
      prefix: 'osmo',
      rpcUrl: 'https://osmosis-rpc.polkachu.com/',
      restUrl: 'https://osmosis-rest.polkachu.com/',
      feeDenom: 'uosmo',
      defaultGasPrice: '0.025uosmo',
      security: {
        maxTxAmount: '10000000uosmo',
        requireDestinationTag: false,
        ibcChannels: {
          'channel-0': {
            counterpartyChainId: 'cosmoshub-4',
            trusted: true,
            lastVerifiedHeight: 8000000
          }
        }
      }
    }
  },
  // 全局安全策略
  security: {
    enableAddressWhitelist: false,
    whitelistedAddresses: [],
    requireConfirmationForLargeAmounts: true,
    largeAmountThresholds: {
      'uatom': '10000000',
      'uosmo': '10000000'
    },
    enableTransactionSimulation: true,
    maxGasFeePerTx: '1000000uatom'
  }
};

// 多链钱包中的跨链桥管理模块
class CrossChainBridgeManager {
  constructor(wallet) {
    this.wallet = wallet;
    this.bridges = {};
    this.registerDefaultBridges();
  }

  registerDefaultBridges() {
    // 注册Wormhole桥
    this.bridges['wormhole'] = new WormholeBridge(this.wallet);
    // 注册Axelar桥
    this.bridges['axelar'] = new AxelarBridge(this.wallet);
    // 注册LayerZero桥
    this.bridges['layerzero'] = new LayerZeroBridge(this.wallet);
    // 注册IBC桥 (针对Cosmos生态)
    this.bridges['ibc'] = new IBCBridge(this.wallet);
  }

  async transferAsset(params) {
    const {
      bridgeType, // 'wormhole', 'axelar', 'layerzero', 'ibc'
      sourceChain,
      destinationChain,
      asset,
      amount,
      recipientAddress,
      options = {}
    } = params;

    // 验证桥类型
    if (!this.bridges[bridgeType]) {
      throw new Error(`Unsupported bridge type: ${bridgeType}`);
    }

    // 安全检查
    await this._performSecurityChecks(params);

    // 执行转账
    return this.bridges[bridgeType].transfer({
      sourceChain,
      destinationChain,
      asset,
      amount,
      recipientAddress,
      options
    });
  }

  async _performSecurityChecks(params) {
    // 执行跨链转账前的安全检查
    const { sourceChain, destinationChain, amount } = params;
    
    // 检查目标链是否在支持列表中
    if (!this.wallet.supportedChains.includes(destinationChain)) {
      throw new Error(`Destination chain not supported: ${destinationChain}`);
    }
    
    // 检查转账金额是否超过安全阈值
    const chainConfig = this.wallet.getChainConfig(sourceChain);
    if (chainConfig && chainConfig.security && chainConfig.security.maxTxAmount) {
      if (BigInt(amount) > BigInt(chainConfig.security.maxTxAmount)) {
        throw new Error(`Transfer amount exceeds security threshold`);
      }
    }
    
    // 模拟交易以验证正确性
    if (chainConfig && chainConfig.security && chainConfig.security.enableTransactionSimulation) {
      await this.wallet.simulateTransaction(sourceChain, params);
    }
  }
}

┌─────────────────────────────────────────────────────────────────┐
│                        用户界面层                               │
│  ┌──────────┐  ┌──────────┐  ┌──────────┐  ┌───────────────┐     │
│  │资产概览  │  │交易面板  │  │跨链操作  │  │安全设置      │     │
│  └──────────┘  └──────────┘  └──────────┘  └───────────────┘     │
├─────────────────────────────────────────────────────────────────┤
│                        统一抽象层                               │
│  ┌──────────┐  ┌──────────┐  ┌──────────┐  ┌───────────────┐     │
│  │抽象账户  │  │智能路由  │  │状态管理  │  │安全抽象      │     │
│  │服务      │  │引擎      │  │服务      │  │服务          │     │
│  └──────────┴──┴──────────┴──┴──────────┴──┴───────────────┘     │
├─────────────────────────────────────────────────────────────────┤
│                        链适配器层                               │
│  ┌──────────┐  ┌──────────┐  ┌──────────┐  ┌───────────────┐     │
│  │EVM适配   │  │Cosmos适配│  │Solana适配│  │跨链桥适配    │     │
│  └──────────┘  └──────────┘  └──────────┘  └───────────────┘     │
├─────────────────────────────────────────────────────────────────┤
│                        区块链网络                               │
│  ┌──────────┐  ┌──────────┐  ┌──────────┐  ┌───────────────┐     │
│  │以太坊    │  │Cosmos生态│  │Solana    │  │其他链        │     │
│  └──────────┘  └──────────┘  └──────────┘  └───────────────┘     │
└─────────────────────────────────────────────────────────────────┘

// 统一抽象层中的跨链身份管理示例
class CrossChainIdentityManager {
  constructor(hdWallet, identityConfig) {
    this.hdWallet = hdWallet;
    this.identityConfig = identityConfig;
    this.chainAdapters = {};
    this.registerChainAdapters();
  }

  registerChainAdapters() {
    // 注册各种链的适配器
    this.chainAdapters['evm'] = new EVMAdapter(this.hdWallet);
    this.chainAdapters['cosmos'] = new CosmosAdapter(this.hdWallet);
    this.chainAdapters['solana'] = new SolanaAdapter(this.hdWallet);
    // 更多链适配器...
  }

  async getIdentity(chainType, chainId) {
    // 获取特定链上的身份信息
    if (!this.chainAdapters[chainType]) {
      throw new Error(`Unsupported chain type: ${chainType}`);
    }
    
    // 使用适配器获取链上身份
    return this.chainAdapters[chainType].getIdentity(chainId);
  }

  async getUnifiedIdentityMap() {
    // 获取用户在所有支持链上的身份映射
    const identityMap = {};
    
    // 遍历所有链类型
    for (const [chainType, adapter] of Object.entries(this.chainAdapters)) {
      const chains = this.identityConfig.supportedChains[chainType] || [];
      
      // 获取每种链类型下所有支持链的身份
      for (const chainId of chains) {
        try {
          const identity = await this.getIdentity(chainType, chainId);
          identityMap[`${chainType}:${chainId}`] = identity;
        } catch (error) {
          console.error(`Failed to get identity for ${chainType}:${chainId}`, error);
        }
      }
    }
    
    return identityMap;
  }
}

// 智能交易路由引擎示例
class SmartTransactionRouter {
  constructor(chainAdapters, routingConfig) {
    this.chainAdapters = chainAdapters;
    this.routingConfig = routingConfig;
    this.networkMonitor = new NetworkMonitor();
    this.feeEstimator = new FeeEstimator();
  }

  async findOptimalRoute(params) {
    const {
      transactionType,
      sourceChain,
      destinationChain,
      asset,
      amount,
      urgency = 'medium' // 'low', 'medium', 'high'
    } = params;

    // 收集所有可能的路由选项
    const routes = await this._collectPossibleRoutes(params);
    
    // 评估每个路由的成本和效率
    const evaluatedRoutes = await Promise.all(
      routes.map(route => this._evaluateRoute(route, urgency))
    );
    
    // 根据评分排序并选择最佳路由
    evaluatedRoutes.sort((a, b) => b.score - a.score);
    
    return evaluatedRoutes[0] || null;
  }

  async _collectPossibleRoutes(params) {
    // 根据交易类型和网络状况收集可能的路由
    const routes = [];
    
    // 直接路由（如果源链和目标链相同）
    if (params.sourceChain === params.destinationChain) {
      routes.push({
        type: 'direct',
        chain: params.sourceChain,
        estimatedTime: 'immediate',
        estimatedFee: await this.feeEstimator.estimateFee({
          chain: params.sourceChain,
          transactionType: params.transactionType,
          amount: params.amount
        })
      });
      return routes;
    }
    
    // 跨链路由 - 直接桥接
    const bridgeRoutes = await this._findBridgeRoutes(params);
    routes.push(...bridgeRoutes);
    
    // 跨链路由 - 中继桥接（通过中间链）
    const relayRoutes = await this._findRelayRoutes(params);
    routes.push(...relayRoutes);
    
    return routes;
  }

  async _evaluateRoute(route, urgency) {
    // 评估路由的总成本、时间和可靠性
    const feeScore = this._calculateFeeScore(route.estimatedFee);
    const timeScore = this._calculateTimeScore(route.estimatedTime, urgency);
    const reliabilityScore = this._calculateReliabilityScore(route);
    
    // 综合评分
    const score = (
      feeScore * this.routingConfig.weight.fee +
      timeScore * this.routingConfig.weight.time +
      reliabilityScore * this.routingConfig.weight.reliability
    );
    
    return {
      ...route,
      feeScore,
      timeScore,
      reliabilityScore,
      score
    };
  }
}

// 统一抽象层的安全验证系统
class CrossChainSecurityVerifier {
  constructor(chainAdapters, securityConfig) {
    this.chainAdapters = chainAdapters;
    this.securityConfig = securityConfig;
    this.riskScorer = new RiskScorer();
    this.transactionSimulator = new TransactionSimulator();
    this.anomalyDetector = new AnomalyDetector();
  }

  async verifyTransaction(transaction) {
    // 多层安全验证
    const validationResults = {
      basicValidation: await this._validateBasicConstraints(transaction),
      riskAssessment: await this._assessTransactionRisk(transaction),
      simulationResult: await this._simulateTransaction(transaction),
      anomalyDetection: await this._detectAnomalies(transaction)
    };
    
    // 综合评估
    const isSecure = this._evaluateSecurity(validationResults);
    
    return {
      secure: isSecure,
      details: validationResults,
      warnings: this._extractWarnings(validationResults),
      recommendations: this._generateRecommendations(transaction, validationResults)
    };
  }

  async _validateBasicConstraints(transaction) {
    // 验证基本安全约束
    const constraints = [];
    
    // 金额限制验证
    if (transaction.amount > this.securityConfig.maxTransactionAmount) {
      constraints.push({
        type: 'amount_limit',
        passed: false,
        message: `Transaction amount exceeds maximum allowed: ${this.securityConfig.maxTransactionAmount}`
      });
    }
    
    // 地址验证
    const destinationValid = await this._validateDestinationAddress(transaction);
    constraints.push({
      type: 'destination_address',
      passed: destinationValid,
      message: destinationValid ? 'Valid destination' : 'Invalid destination address'
    });
    
    // 黑名单检查
    const isBlacklisted = await this._checkBlacklist(transaction);
    constraints.push({
      type: 'blacklist',
      passed: !isBlacklisted,
      message: isBlacklisted ? 'Destination is blacklisted' : 'Not in blacklist'
    });
    
    return constraints;
  }

  async _assessTransactionRisk(transaction) {
    // 评估交易风险分数
    return this.riskScorer.calculateRiskScore({
      userHistory: await this._getUserTransactionHistory(transaction.user),
      transactionPattern: transaction,
      networkConditions: await this.networkMonitor.getCurrentConditions(),
      knownThreats: await this.threatMonitor.getActiveThreats()
    });
  }
}

// 多链钱包的逻辑隔离架构示例
class IsolatedChainManager {
  constructor(hdWallet, securityConfig) {
    this.hdWallet = hdWallet;
    this.securityConfig = securityConfig;
    this.chainContexts = new Map(); // 每个链有独立的上下文环境
    this.initializeChainIsolation();
  }

  initializeChainIsolation() {
    // 为每个支持的链创建独立的执行环境
    for (const chainConfig of this.securityConfig.supportedChains) {
      // 创建独立的密钥派生路径
      const isolationPath = this._generateIsolationPath(chainConfig);
      
      // 创建隔离的链上下文
      const chainContext = {
        chainId: chainConfig.chainId,
        chainType: chainConfig.chainType,
        isolatedHDNode: this.hdWallet.derivePath(isolationPath),
        keyStore: new SecureKeyStore(chainConfig.encryptionLevel),
        transactionHistory: new TransactionHistory(),
        securityPolicy: this._createChainSpecificPolicy(chainConfig),
        // 隔离的依赖服务
        rpcClient: this._createIsolatedRpcClient(chainConfig),
        indexService: this._createIsolatedIndexService(chainConfig)
      };
      
      this.chainContexts.set(chainConfig.chainId, chainContext);
    }
  }

  _generateIsolationPath(chainConfig) {
    // 生成链特定的隔离派生路径
    // 使用不同的purpose和coin_type来增强隔离性
    const purpose = 44 + chainConfig.isolationGroup; // 为不同隔离组使用不同purpose
    const coinType = chainConfig.coinType || this._mapChainTypeToCoinType(chainConfig.chainType);
    
    return `m/${purpose}'/${coinType}'/${chainConfig.accountIndex || 0}'/0/0`;
  }

  _createChainSpecificPolicy(chainConfig) {
    // 为每个链创建独立的安全策略
    return {
      maxTransactionAmount: chainConfig.maxTransactionAmount || '1000000',
      requireMultiSig: chainConfig.requireMultiSig || false,
      allowedDestinations: new Set(chainConfig.allowedDestinations || []),
      transactionRateLimit: chainConfig.transactionRateLimit || '10/min',
      // 链特定的异常检测规则
      anomalyDetectionRules: chainConfig.anomalyDetectionRules || []
    };
  }

  async signTransaction(chainId, transaction) {
    // 确保在隔离环境中执行签名操作
    const chainContext = this.chainContexts.get(chainId);
    if (!chainContext) {
      throw new Error(`Chain not supported or isolated: ${chainId}`);
    }
    
    // 在链特定的安全策略下验证交易
    await this._validateTransactionAgainstChainPolicy(chainContext, transaction);
    
    // 使用隔离的密钥环境执行签名
    return chainContext.isolatedHDNode.signTransaction(transaction, {
      chainId: chainContext.chainId,
      keyStore: chainContext.keyStore
    });
  }
}

// 跨链操作的原子性保障机制
class AtomicCrossChainOperation {
  constructor(isolatedChainManager, operationConfig) {
    this.chainManager = isolatedChainManager;
    this.config = operationConfig;
    this.operationId = uuidv4();
    this.steps = [];
    this.currentStep = 0;
    this.status = 'pending';
    this.recoveryData = {};
  }

  async execute() {
    try {
      this.status = 'executing';
      
      // 预检查所有步骤的可行性
      await this._preCheckAllSteps();
      
      // 执行每一步操作
      for (this.currentStep = 0; this.currentStep < this.steps.length; this.currentStep++) {
        const step = this.steps[this.currentStep];
        
        // 记录恢复数据
        this.recoveryData[step.id] = await this._captureRecoverySnapshot(step);
        
        // 执行步骤
        await this._executeStep(step);
        
        // 确认步骤执行结果
        await this._confirmStepResult(step);
      }
      
      this.status = 'completed';
      return { success: true, operationId: this.operationId };
    } catch (error) {
      // 发生错误时执行回滚
      await this.rollback();
      this.status = 'failed';
      throw error;
    }
  }

  async rollback() {
    console.log(`Rolling back operation ${this.operationId}, current step: ${this.currentStep}`);
    
    // 从当前步骤向前回滚
    for (let i = this.currentStep; i >= 0; i--) {
      const step = this.steps[i];
      const recoveryData = this.recoveryData[step.id];
      
      if (recoveryData) {
        try {
          console.log(`Rolling back step ${i}: ${step.id}`);
          await this._rollbackStep(step, recoveryData);
        } catch (rollbackError) {
          console.error(`Failed to rollback step ${i}: ${step.id}`, rollbackError);
          // 记录回滚失败，可能需要手动干预
          this._recordFailedRollback(step, recoveryData, rollbackError);
        }
      }
    }
  }

  // 为不同类型的跨链操作（如资产转移、消息传递等）提供特定实现
  static createAssetTransferOperation(chainManager, params) {
    // 创建资产转移操作
    const operation = new AtomicCrossChainOperation(chainManager, params);
    
    // 根据不同的跨链桥或协议添加特定步骤
    operation.steps = [
      // 步骤1: 源链锁定/燃烧资产
      {
        id: 'lock_source_asset',
        chainId: params.sourceChain,
        action: 'lock',
        asset: params.asset,
        amount: params.amount
      },
      // 步骤2: 跨链消息验证
      {
        id: 'verify_cross_chain_message',
        type: 'validation',
        sourceChain: params.sourceChain,
        destinationChain: params.destinationChain,
        messageId: null // 将在执行时填充
      },
      // 步骤3: 目标链铸造/释放资产
      {
        id: 'mint_destination_asset',
        chainId: params.destinationChain,
        action: 'mint',
        asset: params.wrappedAsset,
        amount: params.amount,
        recipient: params.recipient
      }
    ];
    
    return operation;
  }
}

// 2025年多链钱包安全配置最佳实践
const walletSecurityConfig = {
  // 全局安全设置
  global: {
    enableAutoUpdates: true,
    securityAuditFrequency: 'weekly',
    threatIntelligenceIntegration: true,
    // 隐私保护设置
    privacy: {
      enableTorIntegration: true,
      usePrivacyRPC: true,
      enableChainAnalysisProtection: true
    }
  },
  
  // 链特定安全配置
  chains: {
    // 高价值资产链配置（更严格的安全措施）
    'ethereum': {
      isolationLevel: 'high',
      requiredSigners: 2, // 多签要求
      hardwareSecurityRequired: true,
      transactionRateLimits: {
        maxAmountPerDay: '50 ETH',
        maxTransactionsPerHour: 10
      },
      whitelistedDestinationsOnly: true,
      // 异常检测阈值
      anomalyDetection: {
        amountDeviationThreshold: 30, // 超过历史平均值30%触发警报
        timePatternViolation: true,
        addressReputationCheck: true
      }
    },
    
    // 中等价值资产链配置
    'cosmoshub-4': {
      isolationLevel: 'medium',
      requiredSigners: 1,
      transactionRateLimits: {
        maxAmountPerDay: '1000 ATOM',
        maxTransactionsPerHour: 20
      },
      allowListedCrossChainBridges: [
        'channel-1', // Osmosis
        'channel-20' // Juno
      ]
    },
    
    // 低价值/实验性链配置
    'experimental-chain': {
      isolationLevel: 'basic',
      maxAssetValue: '100 USD', // 限制该链上的最大资产价值
      requireSeparateSeed: true, // 使用完全独立的助记词
      disallowDirectHighValueTransfers: true // 禁止直接向高价值链转账
    }
  },
  
  // 跨链操作安全配置
  crossChainSecurity: {
    enableAtomicityGuarantee: true,
    maxCrossChainAmountPerDay: '10000 USD',
    requireDestinationAddressWhitelist: true,
    mandatoryCoolingPeriod: {
      'high_value_transfers': '1 hour',
      'new_destination_chains': '24 hours'
    },
    crossChainOperationVerification: {
      requireEmailConfirmation: true,
      requireSecondFactor: true,
      notifyOnCompletion: true
    },
    // 跨链桥安全评分
    bridgeSecurityScores: {
      'ibc': 9.5,
      'wormhole': 8.7,
      'axelar': 8.5,
      'layerzero': 8.2,
      // 最低安全分数要求
      minimumRequiredScore: 8.0
    }
  },
  
  // 恢复与应急计划
  recovery: {
    enableSocialRecovery: true,
    recoveryGuardians: 5,
    requiredGuardiansForRecovery: 3,
    coldStorageBackupFrequency: 'daily',
    enableRemoteWipe: true,
    emergencyContact: 'security@walletprovider.com'
  }
};

// 多链模拟环境管理工具
class MultiChainEnvironmentManager {
  constructor(config) {
    this.config = config;
    this.chains = new Map();
    this.interchainConnections = new Map();
    this.isRunning = false;
  }

  async initialize() {
    console.log('初始化多链模拟环境...');
    
    // 启动各链的本地节点
    for (const chainConfig of this.config.chains) {
      console.log(`启动 ${chainConfig.chainType} 链 (${chainConfig.chainId})...`);
      const chain = await this._startChainNode(chainConfig);
      this.chains.set(chainConfig.chainId, chain);
      console.log(`  ✓ ${chainConfig.chainType} 链已启动，RPC: ${chain.rpcUrl}`);
    }
    
    // 建立链间连接
    await this._establishInterchainConnections();
    
    // 部署必要的合约和桥接组件
    await this._deployInfrastructureContracts();
    
    this.isRunning = true;
    console.log('多链模拟环境初始化完成！');
    return this;
  }

  async _startChainNode(chainConfig) {
    let chainNode;
    
    switch (chainConfig.chainType) {
      case 'ethereum':
        chainNode = await this._startEthereumNode(chainConfig);
        break;
      case 'cosmos':
        chainNode = await this._startCosmosNode(chainConfig);
        break;
      case 'solana':
        chainNode = await this._startSolanaNode(chainConfig);
        break;
      default:
        throw new Error(`不支持的链类型: ${chainConfig.chainType}`);
    }
    
    return chainNode;
  }

  async _startEthereumNode(config) {
    // 启动Hardhat或Ganache节点
    const { spawn } = require('child_process');
    
    // 配置参数
    const params = [
      '--port', config.port || '8545',
      '--gasLimit', config.gasLimit || '12000000',
      '--gasPrice', config.gasPrice || '20000000000',
      '--deterministic',
      '--mnemonic', config.mnemonic || 'test test test test test test test test test test test junk'
    ];
    
    // 启动Ganache进程
    const ganacheProcess = spawn('ganache-cli', params);
    
    // 等待节点启动完成
    await new Promise((resolve) => {
      ganacheProcess.stdout.on('data', (data) => {
        if (data.toString().includes('Listening on')) {
          resolve();
        }
      });
    });
    
    return {
      process: ganacheProcess,
      rpcUrl: `http://localhost:${config.port || '8545'}`,
      chainId: config.chainId || 1337,
      mnemonic: config.mnemonic || 'test test test test test test test test test test test junk'
    };
  }

  async _startCosmosNode(config) {
    // Cosmos SDK链节点启动逻辑
    const { spawn } = require('child_process');
    
    // 使用SimApp或自定义应用
    const binary = config.binary || 'simd';
    
    // 初始化节点
    await new Promise((resolve) => {
      const initProcess = spawn(binary, ['init', 'test-node', '--chain-id', config.chainId]);
      initProcess.on('close', () => resolve());
    });
    
    // 启动节点
    const startProcess = spawn(binary, [
      'start',
      '--rpc.laddr', `tcp://localhost:${config.rpcPort || 26657}`,
      '--api.enable'
    ]);
    
    // 等待节点启动
    await new Promise((resolve) => {
      startProcess.stdout.on('data', (data) => {
        if (data.toString().includes('Starting RPC server')) {
          resolve();
        }
      });
    });
    
    return {
      process: startProcess,
      rpcUrl: `http://localhost:${config.rpcPort || 26657}`,
      restUrl: `http://localhost:${config.restPort || 1317}`,
      chainId: config.chainId || 'simd-testing'
    };
  }

  async _establishInterchainConnections() {
    // 建立链间通信通道（如IBC通道、跨链桥等）
    for (const connection of this.config.interchainConnections) {
      const sourceChain = this.chains.get(connection.sourceChainId);
      const destChain = this.chains.get(connection.destinationChainId);
      
      console.log(`建立 ${connection.sourceChainId} 到 ${connection.destinationChainId} 的 ${connection.type} 连接...`);
      
      if (connection.type === 'ibc') {
        // 建立IBC通道
        await this._setupIbcConnection(sourceChain, destChain, connection);
      } else if (connection.type === 'bridge') {
        // 部署跨链桥合约
        await this._deployBridgeContracts(sourceChain, destChain, connection);
      }
      
      this.interchainConnections.set(`${connection.sourceChainId}-${connection.destinationChainId}`, {
        source: sourceChain,
        destination: destChain,
        type: connection.type,
        config: connection
      });
      
      console.log(`  ✓ ${connection.sourceChainId} 到 ${connection.destinationChainId} 的连接已建立`);
    }
  }

  async shutdown() {
    // 关闭所有节点和连接
    for (const [chainId, chain] of this.chains.entries()) {
      console.log(`关闭 ${chainId} 链...`);
      if (chain.process) {
        chain.process.kill();
      }
    }
    
    this.isRunning = false;
    console.log('多链模拟环境已关闭');
  }
}

// 多链测试环境配置
const testEnvConfig = {
  chains: [
    // 以太坊测试链
    {
      chainId: 'eth-testnet-1',
      chainType: 'ethereum',
      port: 8545,
      mnemonic: 'test test test test test test test test test test test junk',
      accounts: [
        { address: '0x90F8bf6A479f320ead074411a4B0e7944Ea8c9C1', balance: '10000000000000000000000' },
        { address: '0xFFcf8FDEE72ac11b5c542428B35EEF5769C409f0', balance: '10000000000000000000000' }
      ]
    },
    // Cosmos测试链
    {
      chainId: 'cosmos-testnet-1',
      chainType: 'cosmos',
      binary: 'simd',
      rpcPort: 26657,
      restPort: 1317
    },
    // Solana测试链
    {
      chainId: 'solana-testnet-1',
      chainType: 'solana',
      port: 8899,
      genesisHash: 'EtWTRABZaYq6iMfeYKouRu166VU2xqa1wcaWoxPkrZBG'
    }
  ],
  interchainConnections: [
    // IBC连接
    {
      sourceChainId: 'cosmos-testnet-1',
      destinationChainId: 'cosmos-testnet-2',
      type: 'ibc',
      channelId: 'channel-0'
    },
    // 跨链桥连接
    {
      sourceChainId: 'eth-testnet-1',
      destinationChainId: 'cosmos-testnet-1',
      type: 'bridge',
      bridgeType: 'wormhole',
      contracts: {
        ethereum: '0x706abc4E45D419950511e474C7B9Ed348A4a716c',
        cosmos: 'wormhole1735xfsafux0p6wvmdf9w9tln4tuqdfwx89v8pvh'
      }
    }
  ],
  // 测试账户配置
  testAccounts: [
    {
      name: 'user1',
      mnemonic: 'key ritual aware luggage shell federal design example bamboo inject reform school',
      // 不同链上的派生路径
      derivationPaths: {
        'eth-testnet-1': "m/44'/60'/0'/0/0",
        'cosmos-testnet-1': "m/44'/118'/0'/0/0",
        'solana-testnet-1': "m/44'/501'/0'/0'
      }
    }
  ]
};

// 多链钱包测试框架
class MultiChainWalletTestFramework {
  constructor(environmentManager) {
    this.environment = environmentManager;
    this.walletUnderTest = null;
    this.testAccounts = [];
    this.testResults = [];
  }

  async setupWalletForTesting(walletImplementation) {
    // 初始化被测钱包
    this.walletUnderTest = await walletImplementation.initialize({
      rpcEndpoints: this._getAllRpcEndpoints(),
      testMode: true
    });
    
    // 导入测试账户
    for (const accountConfig of this.environment.config.testAccounts) {
      const account = await this.walletUnderTest.importAccount({
        mnemonic: accountConfig.mnemonic,
        name: accountConfig.name
      });
      this.testAccounts.push(account);
    }
    
    return this.walletUnderTest;
  }

  _getAllRpcEndpoints() {
    // 收集所有链的RPC端点
    const endpoints = {};
    for (const [chainId, chain] of this.environment.chains.entries()) {
      endpoints[chainId] = {
        rpcUrl: chain.rpcUrl,
        restUrl: chain.restUrl,
        chainId: chain.chainId
      };
    }
    return endpoints;
  }

  async runTestSuite(suite) {
    console.log(`执行测试套件: ${suite.name}`);
    
    for (const testCase of suite.testCases) {
      try {
        console.log(`  测试: ${testCase.name}...`);
        const result = await testCase.execute(this.walletUnderTest, this.testAccounts, this.environment);
        
        this.testResults.push({
          suite: suite.name,
          test: testCase.name,
          status: 'passed',
          duration: result.duration,
          details: result.details
        });
        
        console.log(`    ✓ 通过`);
      } catch (error) {
        this.testResults.push({
          suite: suite.name,
          test: testCase.name,
          status: 'failed',
          error: error.message,
          stack: error.stack
        });
        
        console.log(`    ✗ 失败: ${error.message}`);
        
        if (suite.continueOnFailure !== true) {
          break;
        }
      }
    }
    
    return this.testResults.filter(r => r.suite === suite.name);
  }
}

// 多链钱包测试用例定义
const walletTestSuites = {
  // 基础功能测试
  basicFunctionality: {
    name: '基础功能测试',
    continueOnFailure: true,
    testCases: [
      {
        name: '导入助记词创建账户',
        async execute(wallet, accounts, environment) {
          const startTime = Date.now();
          
          // 导入新的测试助记词
          const testMnemonic = 'valid test mnemonic with enough words for testing';
          const newAccount = await wallet.importAccount({
            mnemonic: testMnemonic,
            name: 'test-account'
          });
          
          // 验证账户创建成功
          if (!newAccount || !newAccount.id) {
            throw new Error('账户创建失败');
          }
          
          // 验证在所有支持的链上都创建了地址
          const chains = Array.from(environment.chains.keys());
          for (const chainId of chains) {
            const address = newAccount.addresses[chainId];
            if (!address) {
              throw new Error(`在链 ${chainId} 上未创建地址`);
            }
          }
          
          return {
            duration: Date.now() - startTime,
            details: {
              accountId: newAccount.id,
              addressCount: Object.keys(newAccount.addresses).length
            }
          };
        }
      },
      // 更多测试用例...
    ]
  },
  
  // 跨链功能测试
  crossChainFunctionality: {
    name: '跨链功能测试',
    continueOnFailure: false,
    testCases: [
      {
        name: '跨链资产转移',
        async execute(wallet, accounts, environment) {
          const startTime = Date.now();
          const sourceChain = 'eth-testnet-1';
          const destChain = 'cosmos-testnet-1';
          const amount = '1000000000000000000'; // 1 ETH
          const userAccount = accounts[0];
          
          // 确保用户在源链上有足够资金
          const sourceBalanceBefore = await wallet.getBalance(userAccount.id, sourceChain, 'native');
          if (parseInt(sourceBalanceBefore) < parseInt(amount)) {
            throw new Error(`源链账户余额不足: ${sourceBalanceBefore}`);
          }
          
          // 执行跨链转账
          const transferTx = await wallet.transferCrossChain({
            fromAccount: userAccount.id,
            sourceChain: sourceChain,
            destinationChain: destChain,
            amount: amount,
            tokenType: 'native',
            recipient: userAccount.addresses[destChain]
          });
          
          // 等待交易确认
          await wallet.waitForCrossChainConfirmation(transferTx.id, { timeout: 60000 });
          
          // 验证目标链上收到资产
          const destBalanceAfter = await wallet.getBalance(userAccount.id, destChain, 'wETH');
          if (parseInt(destBalanceAfter) < parseInt(amount) * 0.95) { // 考虑手续费
            throw new Error(`目标链资产未到账或金额不符: ${destBalanceAfter}`);
          }
          
          return {
            duration: Date.now() - startTime,
            details: {
              transferId: transferTx.id,
              sourceBalanceBefore: sourceBalanceBefore,
              destBalanceAfter: destBalanceAfter
            }
          };
        }
      },
      // 更多测试用例...
    ]
  }
};

// 自动化测试工作流
class MultiChainWalletTestPipeline {
  constructor(config) {
    this.config = config;
    this.environmentManager = new MultiChainEnvironmentManager(config.environment);
    this.testFramework = new MultiChainWalletTestFramework(this.environmentManager);
    this.reports = [];
  }

  async runFullPipeline() {
    try {
      // 1. 初始化测试环境
      console.log('=== 初始化测试环境 ===');
      await this.environmentManager.initialize();
      
      // 2. 编译钱包代码（如果需要）
      console.log('=== 编译钱包代码 ===');
      if (this.config.compileStep) {
        await this._compileWalletCode();
      }
      
      // 3. 设置测试钱包
      console.log('=== 设置测试钱包 ===');
      const walletImplementation = await this._loadWalletImplementation();
      await this.testFramework.setupWalletForTesting(walletImplementation);
      
      // 4. 运行测试套件
      console.log('=== 运行测试套件 ===');
      for (const suiteName of this.config.testSuitesOrder) {
        const suite = this.config.testSuites[suiteName];
        const results = await this.testFramework.runTestSuite(suite);
        this.reports.push({
          suite: suiteName,
          results: results
        });
      }
      
      // 5. 生成测试报告
      console.log('=== 生成测试报告 ===');
      const report = this._generateReport();
      await this._saveReport(report);
      
      // 6. 清理环境
      console.log('=== 清理测试环境 ===');
      await this.environmentManager.shutdown();
      
      // 7. 返回结果
      return {
        success: report.summary.failed === 0,
        summary: report.summary,
        reportPath: this._getReportPath()
      };
    } catch (error) {
      // 发生错误时确保环境被清理
      if (this.environmentManager.isRunning) {
        await this.environmentManager.shutdown();
      }
      
      throw error;
    }
  }

  _generateReport() {
    // 生成详细的测试报告
    let totalTests = 0;
    let passedTests = 0;
    let failedTests = 0;
    
    const detailedResults = {};
    
    for (const report of this.reports) {
      detailedResults[report.suite] = report.results;
      totalTests += report.results.length;
      passedTests += report.results.filter(r => r.status === 'passed').length;
      failedTests += report.results.filter(r => r.status === 'failed').length;
    }
    
    return {
      generatedAt: new Date().toISOString(),
      summary: {
        total: totalTests,
        passed: passedTests,
        failed: failedTests,
        passRate: totalTests > 0 ? (passedTests / totalTests * 100).toFixed(2) + '%' : '0%'
      },
      detailedResults: detailedResults
    };
  }
}

# GitHub Actions CI/CD配置示例
name: MultiChain Wallet CI/CD

on:
  push:
    branches: [ main, develop ]
  pull_request:
    branches: [ main, develop ]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
    
    - name: 设置Node.js环境
      uses: actions/setup-node@v3
      with:
        node-version: '18'
        cache: 'npm'
    
    - name: 安装依赖
      run: npm ci
    
    - name: 安装测试工具
      run: |
        npm install -g ganache-cli
        # 安装Cosmos SDK测试工具
        # 安装Solana测试工具
    
    - name: 运行多链测试
      run: npm run test:multichain
    
    - name: 上传测试报告
      uses: actions/upload-artifact@v3
      with:
        name: test-results
        path: test-results/
      if: always()

  security-scan:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
    
    - name: 运行安全扫描
      run: npm run security:scan
    
    - name: 上传安全报告
      uses: actions/upload-artifact@v3
      with:
        name: security-results
        path: security-results/

// 多链钱包性能测试工具
class MultiChainWalletPerformanceTester {
  constructor(wallet, environment) {
    this.wallet = wallet;
    this.environment = environment;
    this.metrics = [];
  }

  async runConcurrencyTest(params) {
    console.log(`执行并发测试: ${params.operationType}, 并发数: ${params.concurrentOperations}`);
    
    const startTime = Date.now();
    const operations = [];
    
    // 创建并发操作
    for (let i = 0; i < params.concurrentOperations; i++) {
      const operation = this._createOperation(params.operationType, params, i);
      operations.push(this._executeWithTiming(operation));
    }
    
    // 等待所有操作完成
    const results = await Promise.all(operations);
    const totalDuration = Date.now() - startTime;
    
    // 计算性能指标
    const successCount = results.filter(r => r.success).length;
    const failedCount = results.filter(r => !r.success).length;
    const avgDuration = results.reduce((sum, r) => sum + r.duration, 0) / results.length;
    
    const metrics = {
      testType: 'concurrency',
      operationType: params.operationType,
      concurrentOperations: params.concurrentOperations,
      totalDuration,
      avgDuration,
      successRate: (successCount / params.concurrentOperations * 100).toFixed(2) + '%',
      successCount,
      failedCount,
      operationDetails: results
    };
    
    this.metrics.push(metrics);
    return metrics;
  }

  async runLoadTest(params) {
    console.log(`执行负载测试: 总操作数 ${params.totalOperations}, 并发数 ${params.concurrentUsers}`);
    
    const startTime = Date.now();
    let completedOperations = 0;
    let activeOperations = 0;
    const results = [];
    
    // 批量执行操作，控制并发数
    while (completedOperations < params.totalOperations) {
      // 启动新操作直到达到并发上限
      while (activeOperations < params.concurrentUsers && completedOperations < params.totalOperations) {
        const operationIndex = completedOperations;
        activeOperations++;
        completedOperations++;
        
        const operation = this._createOperation(params.operationType, params, operationIndex);
        
        this._executeWithTiming(operation)
          .then(result => {
            results.push(result);
            activeOperations--;
          })
          .catch(error => {
            results.push({ success: false, error: error.message });
            activeOperations--;
          });
        
        // 小延迟避免立即创建过多操作
        await new Promise(resolve => setTimeout(resolve, 10));
      }
      
      // 等待，避免CPU占用过高
      if (activeOperations > 0) {
        await new Promise(resolve => setTimeout(resolve, 100));
      }
    }
    
    // 等待所有操作完成
    while (activeOperations > 0) {
      await new Promise(resolve => setTimeout(resolve, 100));
    }
    
    const totalDuration = Date.now() - startTime;
    const successCount = results.filter(r => r.success).length;
    const opsPerSecond = (params.totalOperations / (totalDuration / 1000)).toFixed(2);
    
    const metrics = {
      testType: 'load',
      operationType: params.operationType,
      totalOperations: params.totalOperations,
      concurrentUsers: params.concurrentUsers,
      totalDuration,
      operationsPerSecond: opsPerSecond,
      successRate: (successCount / params.totalOperations * 100).toFixed(2) + '%',
      successCount,
      failedCount: params.totalOperations - successCount
    };
    
    this.metrics.push(metrics);
    return metrics;
  }
  
  async _executeWithTiming(operation) {
    const startTime = Date.now();
    
    try {
      const result = await operation();
      return {
        success: true,
        duration: Date.now() - startTime,
        result
      };
    } catch (error) {
      return {
        success: false,
        duration: Date.now() - startTime,
        error: error.message
      };
    }
  }

  _createOperation(operationType, params, index) {
    switch (operationType) {
      case 'balance_check':
        return async () => {
          const accountIndex = index % params.accounts.length;
          const chainId = params.chains[index % params.chains.length];
          return await this.wallet.getBalance(
            params.accounts[accountIndex].id,
            chainId,
            'native'
          );
        };
        
      case 'transfer':
        return async () => {
          const accountIndex = index % params.accounts.length;
          const chainId = params.chains[index % params.chains.length];
          return await this.wallet.transfer({
            fromAccount: params.accounts[accountIndex].id,
            chainId: chainId,
            amount: params.amount || '1000000000000000',
            tokenType: 'native',
            recipient: params.accounts[(accountIndex + 1) % params.accounts.length].addresses[chainId]
          });
        };
        
      case 'cross_chain_transfer':
        return async () => {
          const accountIndex = index % params.accounts.length;
          const sourceChain = params.sourceChains[index % params.sourceChains.length];
          const destChain = params.destinationChains[index % params.destinationChains.length];
          return await this.wallet.transferCrossChain({
            fromAccount: params.accounts[accountIndex].id,
            sourceChain: sourceChain,
            destinationChain: destChain,
            amount: params.amount || '1000000000000000',
            tokenType: 'native',
            recipient: params.accounts[accountIndex].addresses[destChain]
          });
        };
        
      default:
        throw new Error(`不支持的操作类型: ${operationType}`);
    }
  }

  generatePerformanceReport() {
    return {
      generatedAt: new Date().toISOString(),
      metrics: this.metrics,
      summary: {
        totalTests: this.metrics.length,
        successfulTests: this.metrics.filter(m => m.successRate === '100.00%').length,
        averageOperationsPerSecond: this.metrics
          .filter(m => m.operationsPerSecond)
          .reduce((sum, m) => sum + parseFloat(m.operationsPerSecond), 0) / 
          this.metrics.filter(m => m.operationsPerSecond).length || 0
      }
    };
  }
}

// 多链钱包安全设计检查清单
const securityChecklist = {
  // 私钥管理安全检查
  privateKeyManagement: [
    "是否使用硬件安全模块(HSM)或安全飞地存储密钥？",
    "是否实施了密钥分片或阈值签名方案？",
    "是否对密钥派生路径进行了合理设计和隔离？",
    "是否实施了安全的密钥备份和恢复机制？",
    "是否定期进行密钥安全审计？"
  ],
  
  // 链间隔离安全检查
  interchainIsolation: [
    "是否实施了逻辑隔离或物理隔离？",
    "是否对跨链操作实施了额外的授权步骤？",
    "是否设置了跨链转账的限额？",
    "是否对不同链的风险进行了差异化管理？",
    "是否实施了异常交易监控系统？"
  ],
  
  // 跨链桥安全检查
  crossChainBridge: [
    "是否对跨链桥进行了安全评估？",
    "是否使用了经过审计的跨链桥协议？",
    "是否实施了桥接金额限制？",
    "是否设置了跨链交易的时间锁？",
    "是否有桥接失败的应急处理机制？"
  ],
  
  // 用户界面安全检查
  uiSecurity: [
    "是否清晰显示了跨链操作的风险提示？",
    "是否提供了交易预览和确认步骤？",
    "是否实施了防钓鱼设计？",
    "是否有安全的签名请求显示？",
    "是否提供了安全使用教育内容？"
  ]
};

// 多链钱包监控系统架构示例
class MultiChainWalletMonitor {
  constructor(config) {
    this.config = config;
    this.alertChannels = new Map();
    this.metricsCollector = new MetricsCollector();
    this.anomalyDetector = new AnomalyDetector(config.anomalyDetection);
  }

  async initialize() {
    // 初始化告警渠道
    await this._setupAlertChannels();
    
    // 启动指标收集
    await this.metricsCollector.start();
    
    // 设置异常检测
    this.anomalyDetector.on('anomalyDetected', this._handleAnomaly.bind(this));
    
    // 启动健康检查
    this._startHealthChecks();
    
    console.log('多链钱包监控系统初始化完成');
  }

  async _setupAlertChannels() {
    // 初始化各种告警渠道（邮件、短信、Slack等）
    for (const [type, config] of Object.entries(this.config.alertChannels)) {
      const channel = await this._createAlertChannel(type, config);
      this.alertChannels.set(type, channel);
    }
  }

  _startHealthChecks() {
    // 启动多链钱包的健康检查任务
    setInterval(async () => {
      try {
        // 检查各链连接状态
        const chainHealth = await this._checkChainsHealth();
        
        // 检查API服务状态
        const apiHealth = await this._checkApiHealth();
        
        // 检查数据库状态
        const dbHealth = await this._checkDatabaseHealth();
        
        // 汇总健康状态
        const overallHealth = {
          timestamp: new Date().toISOString(),
          chains: chainHealth,
          api: apiHealth,
          database: dbHealth,
          status: this._calculateOverallStatus(chainHealth, apiHealth, dbHealth)
        };
        
        // 记录健康状态
        await this.metricsCollector.recordHealthStatus(overallHealth);
        
        // 如果状态异常，发送告警
        if (overallHealth.status !== 'healthy') {
          await this._sendAlert('health_deteriorated', overallHealth);
        }
      } catch (error) {
        console.error('健康检查失败:', error);
        await this._sendAlert('health_check_failed', { error: error.message });
      }
    }, this.config.healthCheckInterval || 60000); // 默认1分钟检查一次
  }

  async _checkChainsHealth() {
    const results = {};
    
    // 检查每条链的连接状态和响应时间
    for (const chainId of this.config.monitoredChains) {
      try {
        const startTime = Date.now();
        // 发送轻量级请求检查链状态
        await this._pingChain(chainId);
        const responseTime = Date.now() - startTime;
        
        results[chainId] = {
          status: 'healthy',
          responseTime: responseTime,
          lastChecked: new Date().toISOString()
        };
      } catch (error) {
        results[chainId] = {
          status: 'unhealthy',
          error: error.message,
          lastChecked: new Date().toISOString()
        };
      }
    }
    
    return results;
  }

  async _sendAlert(type, data) {
    // 根据告警级别选择合适的告警渠道
    const alertLevel = this.config.alertLevels[type] || 'medium';
    const channels = this._getChannelsForLevel(alertLevel);
    
    for (const channel of channels) {
      try {
        await channel.sendAlert(type, data, alertLevel);
      } catch (error) {
        console.error(`告警发送失败 (${channel.type}):`, error);
      }
    }
  }

  // 其他监控相关方法...
}

// 机构多链资产管理政策示例
const institutionalMultiChainPolicy = {
  // 治理结构
  governance: {
    policyCommittee: ["CTO", "CISO", "Treasury Manager"],
    approvalThreshold: 2, // 至少需要2人批准
    reviewFrequency: "quarterly" // 季度审查
  },
  
  // 资产配置策略
  assetAllocation: {
    maxPerChainExposure: 0.3, // 单链最大风险敞口30%
    bridgeAssetLimit: 0.1, // 通过桥接的资产不超过10%
    highSecurityChains: ["ethereum", "solana", "cosmos"],
    emergingChains: ["aptos", "sui"],
    riskLevels: {
      tier1: 0.5, // 最高风险等级资产配置不超过50%
      tier2: 0.3, // 中等风险等级资产配置不超过30%
      tier3: 0.2  // 新兴/高风险资产配置不超过20%
    }
  },
  
  // 操作安全规范
  operationalSecurity: {
    multiSigRequirement: true,
    minSignatures: 3,
    coldStoragePercentage: 0.8, // 80%资产存储在冷钱包
    hotWalletLimits: {
      dailyTransactionLimit: "1000000", // 日交易限额
      singleTransactionLimit: "100000" // 单笔交易限额
    },
    transactionApproval流程: [
      "提案提交",
      "风险评估",
      "多人签名",
      "执行",
      "审计追踪"
    ]
  }
};

// AI辅助的多链钱包安全系统示例
class AIEnhancedWalletSecurity {
  constructor(config) {
    this.config = config;
    this.behaviorModel = new UserBehaviorModel();
    this.fraudDetector = new AIFraudDetector(config.fraudDetection);
    this.optimizer = new AIResourceOptimizer();
  }

  async initialize() {
    // 加载用户历史行为数据进行训练
    await this.behaviorModel.loadHistoricalData();
    await this.behaviorModel.train();
    
    // 初始化异常检测系统
    this.fraudDetector.on('suspiciousActivity', this._handleSuspiciousActivity.bind(this));
    
    // 启动资源优化器
    await this.optimizer.initialize();
    
    console.log('AI增强型钱包安全系统初始化完成');
  }

  async analyzeTransaction(txData) {
    // 分析交易是否符合用户行为模式
    const behaviorScore = await this.behaviorModel.scoreTransaction(txData);
    
    // 使用AI检测潜在欺诈
    const fraudAnalysis = await this.fraudDetector.analyze(txData);
    
    // 综合评估风险
    const riskScore = this._calculateRiskScore(behaviorScore, fraudAnalysis);
    
    // 根据风险等级返回建议操作
    if (riskScore > this.config.highRiskThreshold) {
      return {
        riskLevel: 'high',
        recommendation: 'block',
        reason: fraudAnalysis.reason,
        details: {
          behaviorScore: behaviorScore,
          anomalyIndicators: fraudAnalysis.anomalies
        }
      };
    } else if (riskScore > this.config.mediumRiskThreshold) {
      return {
        riskLevel: 'medium',
        recommendation: 'require_additional_verification',
        additionalSteps: ['email_confirmation', '2fa_verification'],
        details: {
          behaviorScore: behaviorScore,
          anomalyIndicators: fraudAnalysis.anomalies
        }
      };
    } else {
      return {
        riskLevel: 'low',
        recommendation: 'proceed',
        optimizationSuggestions: await this.optimizer.optimizeTransaction(txData)
      };
    }
  }

  async _handleSuspiciousActivity(activity, riskScore) {
    // 处理可疑活动，发送警报并采取措施
    console.log(`检测到可疑活动: ${activity.type}, 风险评分: ${riskScore}`);
    
    // 通知用户
    await this._notifyUser(activity);
    
    // 根据风险级别采取预防措施
    if (riskScore > this.config.criticalRiskThreshold) {
      await this._temporarilyFreezeSuspiciousAccounts(activity.accounts);
    }
  }
  
  // 其他AI安全功能...
}