mcp-infinite-loop-server/src/blockchainIntegration.js

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/**
 * Blockchain Integration System
 * Revolutionary immutable audit trails and decentralized AI-to-AI communication for ZAI MCP Server
 */

import { EventEmitter } from 'events';
import crypto from 'crypto';

export class BlockchainIntegration extends EventEmitter {
  constructor() {
    super();
    
    // BREAKTHROUGH FEATURE: Immutable Blockchain Ledger
    this.blockchain = {
      chain: [],
      pendingTransactions: [],
      difficulty: 4,
      miningReward: 1,
      genesisBlock: null
    };
    
    // BREAKTHROUGH FEATURE: AI-to-AI Communication Records
    this.aiCommunicationLedger = {
      interactions: new Map(),
      consensusRecords: new Map(),
      qualityMetrics: new Map(),
      performanceHistory: new Map()
    };
    
    // BREAKTHROUGH FEATURE: Smart Contracts for AI Governance
    this.smartContracts = {
      aiGovernance: new AIGovernanceContract(),
      qualityAssurance: new QualityAssuranceContract(),
      resourceAllocation: new ResourceAllocationContract(),
      securityCompliance: new SecurityComplianceContract()
    };
    
    // BREAKTHROUGH FEATURE: Decentralized Consensus Mechanism
    this.consensusMechanism = {
      validators: new Set(),
      votingPower: new Map(),
      consensusThreshold: 0.67,
      activeProposals: new Map()
    };
    
    // BREAKTHROUGH FEATURE: Cryptographic Security
    this.cryptoSecurity = {
      keyPairs: new Map(),
      signatures: new Map(),
      encryptionKeys: new Map(),
      hashAlgorithm: 'sha256'
    };
    
    console.log('[BLOCKCHAIN INTEGRATION] ⛓️ Revolutionary blockchain system initialized');
    this.initializeBlockchain();
    this.setupSmartContracts();
  }

  /**
   * BREAKTHROUGH METHOD: Initialize blockchain with genesis block
   */
  initializeBlockchain() {
    // Create genesis block
    this.blockchain.genesisBlock = this.createGenesisBlock();
    this.blockchain.chain.push(this.blockchain.genesisBlock);
    
    // Initialize validator nodes
    this.initializeValidators();
    
    // Setup cryptographic keys
    this.generateCryptographicKeys();
    
    console.log('[BLOCKCHAIN INTEGRATION] 🔗 Blockchain initialized with genesis block');
  }

  /**
   * BREAKTHROUGH METHOD: Create genesis block
   */
  createGenesisBlock() {
    const genesisData = {
      timestamp: Date.now(),
      data: 'ZAI MCP Server Genesis Block - Revolutionary AI-to-AI Communication System',
      systemInfo: {
        version: '1.0.0',
        features: ['Enhanced AI-to-AI', 'Performance Monitoring', 'ML Integration', 'Security Monitoring', 'Auto-scaling'],
        capabilities: ['Multi-agent Collaboration', 'Predictive Analytics', 'Adaptive Security', 'Cost Optimization']
      }
    };
    
    return this.createBlock(genesisData, '0');
  }

  /**
   * BREAKTHROUGH METHOD: Record AI-to-AI interaction on blockchain
   */
  async recordAIInteraction(interactionData) {
    const transaction = {
      id: this.generateTransactionId(),
      type: 'ai_interaction',
      timestamp: Date.now(),
      data: {
        topic: interactionData.topic,
        iteration: interactionData.iteration,
        agentInsights: interactionData.agentInsights,
        qualityScore: interactionData.qualityScore,
        innovationLevel: interactionData.innovationLevel,
        consensusReached: interactionData.consensusReached || false
      },
      hash: this.calculateHash(interactionData),
      signature: await this.signTransaction(interactionData)
    };
    
    // Add to pending transactions
    this.blockchain.pendingTransactions.push(transaction);
    
    // Store in AI communication ledger
    this.aiCommunicationLedger.interactions.set(transaction.id, transaction);
    
    console.log(`[BLOCKCHAIN INTEGRATION] 📝 AI interaction recorded: ${transaction.id}`);
    
    // Trigger consensus if enough transactions
    if (this.blockchain.pendingTransactions.length >= 5) {
      await this.triggerConsensus();
    }
    
    return transaction.id;
  }

  /**
   * BREAKTHROUGH METHOD: Record system performance metrics on blockchain
   */
  async recordPerformanceMetrics(metrics) {
    const transaction = {
      id: this.generateTransactionId(),
      type: 'performance_metrics',
      timestamp: Date.now(),
      data: {
        cpuUsage: metrics.cpu,
        memoryUsage: metrics.memory,
        cacheHitRate: metrics.cacheHitRate,
        responseTime: metrics.responseTime,
        securityScore: metrics.securityScore,
        scalingActions: metrics.scalingActions
      },
      hash: this.calculateHash(metrics),
      signature: await this.signTransaction(metrics)
    };
    
    this.blockchain.pendingTransactions.push(transaction);
    this.aiCommunicationLedger.performanceHistory.set(transaction.id, transaction);
    
    console.log(`[BLOCKCHAIN INTEGRATION] 📊 Performance metrics recorded: ${transaction.id}`);
    
    return transaction.id;
  }

  /**
   * BREAKTHROUGH METHOD: Execute smart contract for AI governance
   */
  async executeAIGovernanceContract(proposal) {
    const contract = this.smartContracts.aiGovernance;
    
    try {
      const result = await contract.execute({
        proposalType: proposal.type,
        proposalData: proposal.data,
        proposer: proposal.proposer,
        timestamp: Date.now()
      });
      
      // Record contract execution on blockchain
      await this.recordContractExecution('ai_governance', proposal, result);
      
      console.log(`[BLOCKCHAIN INTEGRATION] 📋 AI governance contract executed: ${result.status}`);
      
      return result;
      
    } catch (error) {
      console.error(`[BLOCKCHAIN INTEGRATION] ❌ Error executing AI governance contract: ${error.message}`);
      throw error;
    }
  }

  /**
   * BREAKTHROUGH METHOD: Trigger decentralized consensus
   */
  async triggerConsensus() {
    if (this.blockchain.pendingTransactions.length === 0) return;
    
    console.log(`[BLOCKCHAIN INTEGRATION] 🗳️ Triggering consensus for ${this.blockchain.pendingTransactions.length} transactions`);
    
    // Create new block with pending transactions
    const newBlock = this.createBlock(
      this.blockchain.pendingTransactions,
      this.getLatestBlock().hash
    );
    
    // Mine the block
    await this.mineBlock(newBlock);
    
    // Validate with consensus mechanism
    const consensusReached = await this.validateWithConsensus(newBlock);
    
    if (consensusReached) {
      // Add block to chain
      this.blockchain.chain.push(newBlock);
      
      // Clear pending transactions
      this.blockchain.pendingTransactions = [];
      
      // Record consensus achievement
      this.recordConsensusAchievement(newBlock);
      
      console.log(`[BLOCKCHAIN INTEGRATION] ✅ Consensus reached - Block ${newBlock.index} added to chain`);
      
      // Emit blockchain update event
      this.emit('blockAdded', newBlock);
      
    } else {
      console.log(`[BLOCKCHAIN INTEGRATION] ❌ Consensus failed - Block rejected`);
    }
  }

  /**
   * BREAKTHROUGH METHOD: Mine block using proof-of-work
   */
  async mineBlock(block) {
    const target = Array(this.blockchain.difficulty + 1).join('0');
    
    while (block.hash.substring(0, this.blockchain.difficulty) !== target) {
      block.nonce++;
      block.hash = this.calculateBlockHash(block);
    }
    
    console.log(`[BLOCKCHAIN INTEGRATION] ⛏️ Block mined: ${block.hash}`);
  }

  /**
   * BREAKTHROUGH METHOD: Validate block with decentralized consensus
   */
  async validateWithConsensus(block) {
    const votes = new Map();
    let totalVotingPower = 0;
    let approvalPower = 0;
    
    // Collect votes from validators
    for (const validator of this.consensusMechanism.validators) {
      const vote = await this.getValidatorVote(validator, block);
      const power = this.consensusMechanism.votingPower.get(validator) || 1;
      
      votes.set(validator, vote);
      totalVotingPower += power;
      
      if (vote.approved) {
        approvalPower += power;
      }
    }
    
    // Check if consensus threshold is met
    const approvalRatio = approvalPower / totalVotingPower;
    const consensusReached = approvalRatio >= this.consensusMechanism.consensusThreshold;
    
    // Record consensus result
    this.aiCommunicationLedger.consensusRecords.set(block.hash, {
      votes,
      approvalRatio,
      consensusReached,
      timestamp: Date.now()
    });
    
    return consensusReached;
  }

  /**
   * BREAKTHROUGH METHOD: Verify blockchain integrity
   */
  verifyBlockchainIntegrity() {
    for (let i = 1; i < this.blockchain.chain.length; i++) {
      const currentBlock = this.blockchain.chain[i];
      const previousBlock = this.blockchain.chain[i - 1];
      
      // Verify current block hash
      if (currentBlock.hash !== this.calculateBlockHash(currentBlock)) {
        console.error(`[BLOCKCHAIN INTEGRATION] ❌ Invalid hash at block ${i}`);
        return false;
      }
      
      // Verify link to previous block
      if (currentBlock.previousHash !== previousBlock.hash) {
        console.error(`[BLOCKCHAIN INTEGRATION] ❌ Invalid previous hash at block ${i}`);
        return false;
      }
    }
    
    console.log('[BLOCKCHAIN INTEGRATION] ✅ Blockchain integrity verified');
    return true;
  }

  /**
   * BREAKTHROUGH METHOD: Query AI interaction history
   */
  queryAIInteractionHistory(filters = {}) {
    const interactions = Array.from(this.aiCommunicationLedger.interactions.values());
    
    let filtered = interactions;
    
    if (filters.topic) {
      filtered = filtered.filter(interaction => 
        interaction.data.topic.includes(filters.topic)
      );
    }
    
    if (filters.minQualityScore) {
      filtered = filtered.filter(interaction => 
        interaction.data.qualityScore >= filters.minQualityScore
      );
    }
    
    if (filters.timeRange) {
      filtered = filtered.filter(interaction => 
        interaction.timestamp >= filters.timeRange.start &&
        interaction.timestamp <= filters.timeRange.end
      );
    }
    
    return filtered.sort((a, b) => b.timestamp - a.timestamp);
  }

  /**
   * Helper methods
   */
  createBlock(data, previousHash) {
    return {
      index: this.blockchain.chain.length,
      timestamp: Date.now(),
      data,
      previousHash,
      nonce: 0,
      hash: ''
    };
  }

  calculateBlockHash(block) {
    return crypto
      .createHash(this.cryptoSecurity.hashAlgorithm)
      .update(
        block.index +
        block.timestamp +
        JSON.stringify(block.data) +
        block.previousHash +
        block.nonce
      )
      .digest('hex');
  }

  calculateHash(data) {
    return crypto
      .createHash(this.cryptoSecurity.hashAlgorithm)
      .update(JSON.stringify(data))
      .digest('hex');
  }

  generateTransactionId() {
    return `tx_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
  }

  async signTransaction(data) {
    // Mock signature implementation
    const dataHash = this.calculateHash(data);
    return crypto
      .createHash('sha256')
      .update(dataHash + 'private_key_mock')
      .digest('hex');
  }

  getLatestBlock() {
    return this.blockchain.chain[this.blockchain.chain.length - 1];
  }

  initializeValidators() {
    // Initialize validator nodes
    const validators = ['validator_1', 'validator_2', 'validator_3', 'validator_4', 'validator_5'];
    
    validators.forEach(validator => {
      this.consensusMechanism.validators.add(validator);
      this.consensusMechanism.votingPower.set(validator, 1); // Equal voting power
    });
    
    console.log(`[BLOCKCHAIN INTEGRATION] 👥 Initialized ${validators.length} validator nodes`);
  }

  generateCryptographicKeys() {
    // Generate key pairs for encryption and signing
    const keyPair = crypto.generateKeyPairSync('rsa', {
      modulusLength: 2048,
      publicKeyEncoding: { type: 'spki', format: 'pem' },
      privateKeyEncoding: { type: 'pkcs8', format: 'pem' }
    });
    
    this.cryptoSecurity.keyPairs.set('main', keyPair);
    console.log('[BLOCKCHAIN INTEGRATION] 🔐 Cryptographic keys generated');
  }

  setupSmartContracts() {
    // Initialize smart contracts
    Object.values(this.smartContracts).forEach(contract => {
      contract.initialize();
    });
    
    console.log('[BLOCKCHAIN INTEGRATION] 📜 Smart contracts initialized');
  }

  async getValidatorVote(validator, block) {
    // Mock validator vote - in real implementation, this would involve network communication
    const isValid = this.validateBlock(block);
    
    return {
      validator,
      approved: isValid && Math.random() > 0.1, // 90% approval rate for valid blocks
      timestamp: Date.now(),
      reason: isValid ? 'Block validation passed' : 'Block validation failed'
    };
  }

  validateBlock(block) {
    // Basic block validation
    return (
      block.index >= 0 &&
      block.timestamp > 0 &&
      block.data !== null &&
      block.previousHash !== null
    );
  }

  recordConsensusAchievement(block) {
    this.aiCommunicationLedger.consensusRecords.set(`consensus_${block.index}`, {
      blockIndex: block.index,
      blockHash: block.hash,
      consensusTimestamp: Date.now(),
      transactionCount: Array.isArray(block.data) ? block.data.length : 1
    });
  }

  async recordContractExecution(contractType, proposal, result) {
    const transaction = {
      id: this.generateTransactionId(),
      type: 'smart_contract_execution',
      timestamp: Date.now(),
      data: {
        contractType,
        proposal,
        result,
        executionTime: result.executionTime || 0
      },
      hash: this.calculateHash({ contractType, proposal, result }),
      signature: await this.signTransaction({ contractType, proposal, result })
    };
    
    this.blockchain.pendingTransactions.push(transaction);
  }

  /**
   * Get blockchain summary
   */
  getSummary() {
    return {
      status: 'active',
      blockchainLength: this.blockchain.chain.length,
      pendingTransactions: this.blockchain.pendingTransactions.length,
      totalInteractions: this.aiCommunicationLedger.interactions.size,
      consensusRecords: this.aiCommunicationLedger.consensusRecords.size,
      validators: this.consensusMechanism.validators.size,
      integrityVerified: this.verifyBlockchainIntegrity(),
      latestBlockHash: this.getLatestBlock().hash.substring(0, 16) + '...'
    };
  }

  /**
   * Cleanup method
   */
  destroy() {
    console.log('[BLOCKCHAIN INTEGRATION] 🛑 Blockchain integration stopped');
  }
}

// Mock Smart Contract Classes
class AIGovernanceContract {
  initialize() {
    this.proposals = new Map();
    this.executedProposals = new Set();
  }
  
  async execute(params) {
    const proposalId = `proposal_${Date.now()}`;
    this.proposals.set(proposalId, params);
    
    // Mock execution logic
    const approved = Math.random() > 0.3; // 70% approval rate
    
    if (approved) {
      this.executedProposals.add(proposalId);
    }
    
    return {
      proposalId,
      status: approved ? 'approved' : 'rejected',
      executionTime: Math.random() * 1000 + 500,
      result: approved ? 'Proposal executed successfully' : 'Proposal rejected by governance'
    };
  }
}

class QualityAssuranceContract {
  initialize() {
    this.qualityThresholds = new Map();
    this.qualityReports = new Map();
  }
  
  async execute(params) {
    return {
      status: 'executed',
      qualityScore: Math.random() * 0.3 + 0.7,
      executionTime: Math.random() * 500 + 200
    };
  }
}

class ResourceAllocationContract {
  initialize() {
    this.allocationRules = new Map();
    this.resourcePools = new Map();
  }
  
  async execute(params) {
    return {
      status: 'executed',
      allocatedResources: params.requestedResources || {},
      executionTime: Math.random() * 800 + 300
    };
  }
}

class SecurityComplianceContract {
  initialize() {
    this.complianceRules = new Map();
    this.auditTrails = new Map();
  }
  
  async execute(params) {
    return {
      status: 'executed',
      complianceScore: Math.random() * 0.2 + 0.8,
      executionTime: Math.random() * 600 + 400
    };
  }
}