Compliance & Standards

interface GDPRRequest {
  type: 'access' | 'rectification' | 'erasure' | 'portability' | 'restriction';
  userId: string;
  identityVerified: boolean;
  requestDetails: string;
  timestamp: Date;
}

class GDPRComplianceManager {
  private dataProcessor: DataProcessor;
  private auditLogger: AuditLogger;

  async handleDataSubjectRequest(request: GDPRRequest): Promise<void> {
    // Verify identity
    if (!request.identityVerified) {
      throw new Error('Identity verification required');
    }

    // Log the request
    await this.auditLogger.logGDPRRequest(request);

    switch (request.type) {
      case 'access':
        await this.handleAccessRequest(request.userId);
        break;
      case 'rectification':
        await this.handleRectificationRequest(request);
        break;
      case 'erasure':
        await this.handleErasureRequest(request.userId);
        break;
      case 'portability':
        await this.handlePortabilityRequest(request.userId);
        break;
      case 'restriction':
        await this.handleRestrictionRequest(request);
        break;
    }
  }

  private async handleAccessRequest(userId: string): Promise<void> {
    const userData = await this.dataProcessor.getUserData(userId);
    const portableData = this.formatForAccess(userData);
    
    // Provide data to data subject
    await this.sendDataToUser(userId, portableData);
    
    // Log access fulfillment
    await this.auditLogger.logGDPRAccess(userId, 'fulfilled');
  }

  private async handleErasureRequest(userId: string): Promise<void> {
    // Check for legal holds or other retention requirements
    const canDelete = await this.checkDeletionEligibility(userId);
    
    if (!canDelete) {
      await this.notifyUser(userId, 'Unable to delete due to legal obligations');
      return;
    }

    // Perform anonymization instead of hard delete for audit purposes
    await this.anonymizeUserData(userId);
    
    // Log erasure
    await this.auditLogger.logGDPRErasure(userId, 'completed');
  }

  private async handlePortabilityRequest(userId: string): Promise<void> {
    const userData = await this.dataProcessor.getUserData(userId);
    const portableFormat = this.convertToPortableFormat(userData);
    
    // Provide in machine-readable format (JSON, CSV, XML)
    await this.sendPortableData(userId, portableFormat);
    
    // Log portability fulfillment
    await this.auditLogger.logGDPRPortability(userId, 'fulfilled');
  }

  private formatForAccess(userData: any): any {
    return {
      personalData: {
        name: userData.name,
        email: userData.email,
        phone: userData.phone,
        address: userData.address
      },
      usageData: {
        sessions: userData.sessions,
        analyses: userData.analyses,
        preferences: userData.preferences
      },
      metadata: {
        accountCreated: userData.created_at,
        lastLogin: userData.last_login,
        dataRetentionPeriod: '7 years'
      }
    };
  }

  private async anonymizeUserData(userId: string): Promise<void> {
    // Replace personal identifiers with pseudonyms
    const anonymizedData = {
      id: `anon_${this.generatePseudonym()}`,
      email: `anon_${this.generatePseudonym()}@anonymized.com`,
      name: 'Anonymous User',
      // ... other fields anonymized
    };

    await this.dataProcessor.updateUserData(userId, anonymizedData);
  }
}

interface ConsentRecord {
  id: string;
  userId: string;
  consentType: ConsentType;
  granted: boolean;
  timestamp: Date;
  ipAddress: string;
  userAgent: string;
  version: string;
  withdrawalDate?: Date;
}

enum ConsentType {
  MARKETING_EMAILS = 'marketing_emails',
  ANALYTICS_COOKIES = 'analytics_cookies',
  DATA_PROCESSING = 'data_processing',
  THIRD_PARTY_SHARING = 'third_party_sharing',
  RESEARCH_PARTICIPATION = 'research_participation'
}

class ConsentManager {
  private consentStorage: ConsentStorage;
  private auditLogger: AuditLogger;

  async recordConsent(
    userId: string, 
    consentType: ConsentType, 
    granted: boolean,
    context: RequestContext
  ): Promise<void> {
    const consent: ConsentRecord = {
      id: this.generateConsentId(),
      userId,
      consentType,
      granted,
      timestamp: new Date(),
      ipAddress: context.ipAddress,
      userAgent: context.userAgent,
      version: this.getCurrentConsentVersion(consentType)
    };

    await this.consentStorage.save(consent);
    await this.auditLogger.logConsentChange(consent);
  }

  async checkConsent(userId: string, consentType: ConsentType): Promise<boolean> {
    const latestConsent = await this.consentStorage.getLatest(userId, consentType);
    
    if (!latestConsent) {
      return false; // No consent recorded
    }

    // Check if consent has been withdrawn
    if (latestConsent.withdrawalDate) {
      return false;
    }

    // Check if consent version is current
    const currentVersion = this.getCurrentConsentVersion(consentType);
    if (latestConsent.version !== currentVersion) {
      return false; // Consent outdated
    }

    return latestConsent.granted;
  }

  async withdrawConsent(userId: string, consentType: ConsentType): Promise<void> {
    const latestConsent = await this.consentStorage.getLatest(userId, consentType);
    
    if (latestConsent && latestConsent.granted) {
      latestConsent.withdrawalDate = new Date();
      await this.consentStorage.update(latestConsent);
      await this.auditLogger.logConsentWithdrawal(userId, consentType);
      
      // Trigger data processing actions for withdrawal
      await this.handleConsentWithdrawal(userId, consentType);
    }
  }

  private async handleConsentWithdrawal(userId: string, consentType: ConsentType): Promise<void> {
    switch (consentType) {
      case ConsentType.MARKETING_EMAILS:
        await this.unsubscribeFromMarketing(userId);
        break;
      case ConsentType.ANALYTICS_COOKIES:
        await this.deleteAnalyticsData(userId);
        break;
      case ConsentType.DATA_PROCESSING:
        await this.restrictDataProcessing(userId);
        break;
      case ConsentType.THIRD_PARTY_SHARING:
        await this.stopThirdPartySharing(userId);
        break;
      case ConsentType.RESEARCH_PARTICIPATION:
        await this.excludeFromResearch(userId);
        break;
    }
  }

  generateConsentBanner(): ConsentBanner {
    return {
      title: "Privacy & Consent",
      description: "We use your data to provide psychic intelligence services and improve our platform.",
      consents: [
        {
          type: ConsentType.DATA_PROCESSING,
          required: true,
          description: "Required for service provision",
          details: "Processing your queries and providing analysis results"
        },
        {
          type: ConsentType.ANALYTICS_COOKIES,
          required: false,
          description: "Help us improve our services",
          details: "Anonymous usage statistics and performance metrics"
        },
        {
          type: ConsentType.MARKETING_EMAILS,
          required: false,
          description: "Receive updates and offers",
          details: "Product updates, new features, and promotional content"
        }
      ],
      version: this.getCurrentConsentVersion(),
      lastUpdated: new Date()
    };
  }
}

interface CCPARequest {
  type: 'know' | 'delete' | 'opt_out' | 'opt_in';
  consumerId: string;
  identityVerified: boolean;
  requestDetails: string;
  timestamp: Date;
}

class CCPAComplianceManager {
  private dataProcessor: DataProcessor;
  private auditLogger: AuditLogger;
  private optOutRegistry: OptOutRegistry;

  async handleConsumerRequest(request: CCPARequest): Promise<void> {
    if (!request.identityVerified) {
      throw new Error('Identity verification required');
    }

    await this.auditLogger.logCCPARequest(request);

    switch (request.type) {
      case 'know':
        await this.handleKnowRequest(request.consumerId);
        break;
      case 'delete':
        await this.handleDeleteRequest(request.consumerId);
        break;
      case 'opt_out':
        await this.handleOptOutRequest(request.consumerId);
        break;
      case 'opt_in':
        await this.handleOptInRequest(request.consumerId);
        break;
    }
  }

  private async handleKnowRequest(consumerId: string): Promise<void> {
    const consumerData = await this.dataProcessor.getConsumerData(consumerId);
    const disclosureReport = this.createDisclosureReport(consumerData);
    
    await this.sendDisclosureToConsumer(consumerId, disclosureReport);
    await this.auditLogger.logCCPAKnow(consumerId, 'fulfilled');
  }

  private async handleDeleteRequest(consumerId: string): Promise<void> {
    // Check for legal exceptions
    const canDelete = await this.checkDeletionExceptions(consumerId);
    
    if (!canDelete) {
      await this.notifyConsumer(consumerId, 'Unable to delete due to legal requirements');
      return;
    }

    // Delete consumer data
    await this.dataProcessor.deleteConsumerData(consumerId);
    await this.auditLogger.logCCPADelete(consumerId, 'completed');
  }

  private async handleOptOutRequest(consumerId: string): Promise<void> {
    await this.optOutRegistry.addOptOut(consumerId);
    await this.stopDataSale(consumerId);
    await this.auditLogger.logCCPAOptOut(consumerId, 'completed');
  }

  private async handleOptInRequest(consumerId: string): Promise<void> {
    await this.optOutRegistry.removeOptOut(consumerId);
    await this.resumeDataSale(consumerId);
    await this.auditLogger.logCCPAOptIn(consumerId, 'completed');
  }

  private createDisclosureReport(consumerData: any): CCPADisclosure {
    return {
      categoriesCollected: [
        'Identifiers',
        'Personal information',
        'Commercial information',
        'Internet or electronic network activity information'
      ],
      sourcesCollected: [
        'Directly from consumer',
        'Automatically collected',
        'Third parties'
      ],
      businessPurposes: [
        'To provide services requested by consumer',
        'To fulfill contractual obligations',
        'To improve our services',
        'For research and development'
      },
      thirdPartiesShared: [
        'Payment processors',
        'Cloud service providers',
        'Analytics providers'
      ],
      retentionPeriod: 'As long as necessary to fulfill service obligations',
      consumerRights: [
        'Right to know what personal information is collected',
        'Right to delete personal information',
        'Right to opt-out of sale of personal information',
        'Right to non-discrimination for exercising privacy rights'
      ]
    };
  }

  private async checkDeletionExceptions(consumerId: string): Promise<boolean> {
    // Check for active legal holds
    const hasLegalHold = await this.checkLegalHold(consumerId);
    if (hasLegalHold) return false;

    // Check for required transaction data
    const hasActiveTransactions = await this.checkActiveTransactions(consumerId);
    if (hasActiveTransactions) return false;

    // Check for regulatory requirements
    const hasRegulatoryRequirement = await this.checkRegulatoryRequirements(consumerId);
    if (hasRegulatoryRequirement) return false;

    return true;
  }
}

interface PHIRecord {
  id: string;
  patientId: string;
  phiData: any;
  accessLevel: PHIAccessLevel;
  encryptionMetadata: EncryptionMetadata;
  auditTrail: AuditEntry[];
  retentionDate: Date;
}

enum PHIAccessLevel {
  MINIMUM_NECESSARY = 'minimum_necessary',
  FULL_ACCESS = 'full_access',
  EMERGENCY_ACCESS = 'emergency_access'
}

class PHISecurityManager {
  private encryptionService: EncryptionService;
  private accessControl: AccessControlService;
  private auditLogger: AuditLogger;

  async createPHIRecord(
    patientId: string, 
    phiData: any, 
    requestedBy: string
  ): Promise<string> {
    // Verify authorization
    const hasAuthorization = await this.accessControl.checkPHIAccess(
      requestedBy, 
      'create', 
      patientId
    );
    
    if (!hasAuthorization) {
      throw new Error('Unauthorized to create PHI record');
    }

    // Apply minimum necessary standard
    const filteredData = this.applyMinimumNecessaryStandard(phiData, requestedBy);
    
    // Encrypt PHI data
    const encryptedData = await this.encryptionService.encryptPHI(filteredData);
    
    // Create record
    const record: PHIRecord = {
      id: this.generateRecordId(),
      patientId,
      phiData: encryptedData,
      accessLevel: PHIAccessLevel.MINIMUM_NECESSARY,
      encryptionMetadata: this.encryptionService.getMetadata(),
      auditTrail: [{
        action: 'created',
        userId: requestedBy,
        timestamp: new Date(),
        ipAddress: this.getCurrentIP(),
        userAgent: this.getCurrentUserAgent()
      }],
      retentionDate: this.calculateRetentionDate()
    };

    await this.savePHIRecord(record);
    await this.auditLogger.logPHICreation(record.id, requestedBy);

    return record.id;
  }

  async accessPHIRecord(
    recordId: string, 
    requestedBy: string, 
    purpose: string
  ): Promise<any> {
    // Verify authorization
    const record = await this.getPHIRecord(recordId);
    const hasAccess = await this.accessControl.checkPHIAccess(
      requestedBy, 
      'read', 
      record.patientId
    );
    
    if (!hasAccess) {
      throw new Error('Unauthorized to access PHI record');
    }

    // Decrypt PHI data
    const decryptedData = await this.encryptionService.decryptPHI(
      record.phiData, 
      record.encryptionMetadata
    );

    // Apply minimum necessary standard
    const filteredData = this.applyMinimumNecessaryStandard(decryptedData, requestedBy);

    // Log access
    await this.auditLogger.logPHIAccess(recordId, requestedBy, purpose);

    return filteredData;
  }

  private applyMinimumNecessaryStandard(data: any, userId: string): any {
    const userRole = this.accessControl.getUserRole(userId);
    const accessRules = this.getAccessRules(userRole);
    
    return this.filterDataByRules(data, accessRules);
  }

  private getAccessRules(role: string): AccessRule[] {
    const rules: Record<string, AccessRule[]> = {
      'doctor': [
        { field: 'medical_history', allowed: true },
        { field: 'diagnoses', allowed: true },
        { field: 'treatments', allowed: true },
        { field: 'contact_info', allowed: true }
      ],
      'researcher': [
        { field: 'medical_history', allowed: false },
        { field: 'diagnoses', allowed: true, anonymized: true },
        { field: 'treatments', allowed: true, anonymized: true },
        { field: 'contact_info', allowed: false }
      ],
      'admin': [
        { field: 'medical_history', allowed: false },
        { field: 'diagnoses', allowed: false },
        { field: 'treatments', allowed: false },
        { field: 'contact_info', allowed: true }
      ]
    };

    return rules[role] || [];
  }

  private filterDataByRules(data: any, rules: AccessRule[]): any {
    const filtered: any = {};

    for (const rule of rules) {
      if (rule.allowed) {
        if (rule.anonymized) {
          filtered[rule.field] = this.anonymizeField(data[rule.field]);
        } else {
          filtered[rule.field] = data[rule.field];
        }
      }
    }

    return filtered;
  }

  private anonymizeField(value: any): any {
    // Implement anonymization logic
    if (typeof value === 'string') {
      return value.substring(0, 3) + '***';
    }
    return 'ANONYMIZED';
  }
}

interface ISMSControl {
  id: string;
  category: ISMSCategory;
  title: string;
  description: string;
  implementation: ImplementationStatus;
  evidence: Evidence[];
  reviewDate: Date;
  nextReviewDate: Date;
}

enum ISMSCategory {
  INFORMATION_SECURITY_POLICIES = 'A.5',
  ORGANIZATION_OF_INFORMATION_SECURITY = 'A.6',
  HUMAN_RESOURCE_SECURITY = 'A.7',
  ASSET_MANAGEMENT = 'A.8',
  ACCESS_CONTROL = 'A.9',
  CRYPTOGRAPHY = 'A.10',
  PHYSICAL_AND_ENVIRONMENTAL_SECURITY = 'A.11',
  OPERATIONS_SECURITY = 'A.12',
  COMMUNICATIONS_SECURITY = 'A.13',
  SYSTEM_ACQUISITION_DEVELOPMENT_MAINTENANCE = 'A.14',
  SUPPLIER_RELATIONSHIPS = 'A.15',
  INCIDENT_MANAGEMENT = 'A.16',
  BUSINESS_CONTINUITY_MANAGEMENT = 'A.17',
  COMPLIANCE = 'A.18'
}

enum ImplementationStatus {
  IMPLEMENTED = 'implemented',
  PARTIALLY_IMPLEMENTED = 'partially_implemented',
  PLANNED = 'planned',
  NOT_IMPLEMENTED = 'not_implemented'
}

class ISMSManager {
  private controls: Map<string, ISMSControl>;
  private auditLogger: AuditLogger;

  constructor() {
    this.controls = new Map();
    this.initializeControls();
  }

  private initializeControls(): void {
    // Initialize ISO 27001 controls
    this.addControl({
      id: 'A.9.2.1',
      category: ISMSCategory.ACCESS_CONTROL,
      title: 'Registration of Users',
      description: 'Access rights shall be formally registered and managed.',
      implementation: ImplementationStatus.IMPLEMENTED,
      evidence: [
        { type: 'policy', location: '/security/access-control-policy.pdf' },
        { type: 'procedure', location: '/procedures/user-registration.md' },
        { type: 'audit_log', location: '/audit/access-control-audit.json' }
      ],
      reviewDate: new Date('2024-01-01'),
      nextReviewDate: new Date('2024-07-01')
    });

    this.addControl({
      id: 'A.12.4.1',
      category: ISMSCategory.OPERATIONS_SECURITY,
      title: 'Event Logging',
      description: 'Audit logs recording user activities, exceptions, and information security events shall be produced and kept.',
      implementation: ImplementationStatus.IMPLEMENTED,
      evidence: [
        { type: 'configuration', location: '/config/logging-config.json' },
        { type: 'procedure', location: '/procedures/log-management.md' },
        { type: 'sample_logs', location: '/logs/sample-security-logs.json' }
      ],
      reviewDate: new Date('2024-01-01'),
      nextReviewDate: new Date('2024-07-01')
    });

    // Add more controls...
  }

  async performRiskAssessment(): Promise<RiskAssessment> {
    const risks = await this.identifyRisks();
    const analyzedRisks = await this.analyzeRisks(risks);
    const treatmentPlan = await this.createRiskTreatmentPlan(analyzedRisks);

    return {
      assessmentDate: new Date(),
      assessor: 'Security Team',
      risks: analyzedRisks,
      treatmentPlan,
      residualRisk: this.calculateResidualRisk(analyzedRisks, treatmentPlan)
    };
  }

  private async identifyRisks(): Promise<Risk[]> {
    return [
      {
        id: 'R001',
        category: 'Security',
        description: 'Unauthorized access to sensitive data',
        likelihood: 'Medium',
        impact: 'High',
        existingControls: ['A.9.2.1', 'A.9.4.1', 'A.10.1.1'],
        riskScore: 15
      },
      {
        id: 'R002',
        category: 'Availability',
        description: 'Service disruption due to system failure',
        likelihood: 'Low',
        impact: 'High',
        existingControls: ['A.12.6.1', 'A.17.2.1'],
        riskScore: 12
      },
      {
        id: 'R003',
        category: 'Compliance',
        description: 'Non-compliance with data protection regulations',
        likelihood: 'Medium',
        impact: 'High',
        existingControls: ['A.18.1.1', 'A.18.1.2'],
        riskScore: 15
      }
    ];
  }

  private async analyzeRisks(risks: Risk[]): Promise<AnalyzedRisk[]> {
    return risks.map(risk => ({
      ...risk,
      analysis: {
        currentRiskLevel: this.calculateRiskLevel(risk.likelihood, risk.impact),
        controlEffectiveness: this.evaluateControlEffectiveness(risk.existingControls),
        recommendedActions: this.getRecommendedActions(risk)
      }
    }));
  }

  async conductInternalAudit(): Promise<AuditReport> {
    const auditScope = this.defineAuditScope();
    const auditFindings = await this.performAuditTesting(auditScope);
    const nonConformities = this.identifyNonConformities(auditFindings);
    const correctiveActions = this.planCorrectiveActions(nonConformities);

    return {
      auditDate: new Date(),
      auditor: 'Internal Audit Team',
      scope: auditScope,
      findings: auditFindings,
      nonConformities,
      correctiveActions,
      overallConformance: this.calculateOverallConformance(nonConformities),
      recommendations: this.generateRecommendations(nonConformities)
    };
  }

  private defineAuditScope(): AuditScope {
    return {
      period: {
        start: new Date('2024-01-01'),
        end: new Date('2024-06-30')
      },
      departments: ['IT', 'Security', 'Operations'],
      controls: Array.from(this.controls.keys()),
      processes: ['Access Management', 'Incident Response', 'Change Management']
    };
  }

  async generateComplianceReport(): Promise<ComplianceReport> {
    const controlStatus = this.evaluateAllControls();
    const gapAnalysis = this.performGapAnalysis();
    const maturityAssessment = this.assessMaturity();

    return {
      reportDate: new Date(),
      standard: 'ISO 27001:2022',
      version: '2.0',
      overallCompliance: this.calculateOverallCompliance(controlStatus),
      controlStatus,
      gapAnalysis,
      maturityAssessment,
      recommendations: this.generateImprovementRecommendations(gapAnalysis)
    };
  }
}

interface SOC2Control {
  id: string;
  principle: SOC2Principle;
  criteria: string;
  description: string;
  implementation: ControlImplementation;
  testingResults: TestingResult[];
  evidence: Evidence[];
}

enum SOC2Principle {
  SECURITY = 'Security',
  AVAILABILITY = 'Availability',
  PROCESSING_INTEGRITY = 'Processing Integrity',
  CONFIDENTIALITY = 'Confidentiality',
  PRIVACY = 'Privacy'
}

class SOC2ComplianceManager {
  private controls: Map<string, SOC2Control>;
  private monitoringService: MonitoringService;

  constructor() {
    this.controls = new Map();
    this.initializeControls();
  }

  private initializeControls(): void {
    // Security Principle Controls
    this.addControl({
      id: 'CC2.1',
      principle: SOC2Principle.SECURITY,
      criteria: 'Logical and Physical Access Controls',
      description: 'The entity implements logical access security software, infrastructure, and architectures to protect information assets.',
      implementation: {
        status: 'Implemented',
        description: 'Multi-factor authentication, role-based access control, and network segmentation implemented.',
        owner: 'Security Team',
        implementationDate: new Date('2023-06-01')
      },
      testingResults: [
        {
          testDate: new Date('2024-01-15'),
          testType: 'Penetration Testing',
          result: 'Pass',
          details: 'No critical vulnerabilities found'
        }
      ],
      evidence: [
        { type: 'policy', location: '/security/access-control-policy.pdf' },
        { type: 'configuration', location: '/config/access-control.json' },
        { type: 'test_report', location: '/reports/pen-test-2024-01.pdf' }
      ]
    });

    // Availability Principle Controls
    this.addControl({
      id: 'CC3.1',
      principle: SOC2Principle.AVAILABILITY,
      criteria: 'Availability Monitoring and Incident Response',
      description: 'The entity monitors system components and the operation of those components for availability.',
      implementation: {
        status: 'Implemented',
        description: '24/7 monitoring, automated alerting, and incident response procedures in place.',
        owner: 'Operations Team',
        implementationDate: new Date('2023-08-01')
      },
      testingResults: [
        {
          testDate: new Date('2024-02-01'),
          testType: 'Disaster Recovery Test',
          result: 'Pass',
          details: 'RTO of 2 hours and RPO of 15 minutes achieved'
        }
      ],
      evidence: [
        { type: 'monitoring_dashboard', location: '/monitoring/availability-dashboard.png' },
        { type: 'incident_procedure', location: '/procedures/incident-response.md' },
        { type: 'dr_test_report', location: '/reports/dr-test-2024-02.pdf' }
      ]
    });
  }

  async performContinuousMonitoring(): Promise<MonitoringReport> {
    const monitoringData = await this.collectMonitoringData();
    const complianceStatus = this.evaluateComplianceStatus(monitoringData);
    const anomalies = this.detectAnomalies(monitoringData);
    const recommendations = this.generateRecommendations(anomalies);

    return {
      reportDate: new Date(),
      monitoringPeriod: {
        start: new Date(Date.now() - 24 * 60 * 60 * 1000), // Last 24 hours
        end: new Date()
      },
      overallStatus: complianceStatus.overall,
      controlStatuses: complianceStatus.controls,
      anomalies,
      recommendations,
      evidence: this.collectMonitoringEvidence(monitoringData)
    };
  }

  private async collectMonitoringData(): Promise<MonitoringData> {
    return {
      accessEvents: await this.monitoringService.getAccessEvents(),
      systemMetrics: await this.monitoringService.getSystemMetrics(),
      securityEvents: await this.monitoringService.getSecurityEvents(),
      availabilityMetrics: await this.monitoringService.getAvailabilityMetrics(),
      changeEvents: await this.monitoringService.getChangeEvents()
    };
  }

  private evaluateComplianceStatus(data: MonitoringData): ComplianceStatus {
    const controlStatuses = new Map<string, ControlStatus>();

    // Evaluate Security controls
    controlStatuses.set('CC2.1', this.evaluateAccessControl(data.accessEvents));
    controlStatuses.set('CC2.2', this.evaluateNetworkSecurity(data.securityEvents));
    
    // Evaluate Availability controls
    controlStatuses.set('CC3.1', this.evaluateAvailability(data.availabilityMetrics));
    controlStatuses.set('CC3.2', this.evaluateIncidentResponse(data.securityEvents));

    // Evaluate Processing Integrity controls
    controlStatuses.set('CC4.1', this.evaluateDataProcessing(data.systemMetrics));
    controlStatuses.set('CC4.2', this.evaluateChangeManagement(data.changeEvents));

    const overallStatus = this.calculateOverallStatus(Array.from(controlStatuses.values()));

    return {
      overall: overallStatus,
      controls: Object.fromEntries(controlStatuses)
    };
  }

  private evaluateAccessControl(accessEvents: AccessEvent[]): ControlStatus {
    const violations = accessEvents.filter(event => event.type === 'access_violation');
    const totalEvents = accessEvents.length;
    const violationRate = violations.length / totalEvents;

    return {
      status: violationRate < 0.001 ? 'Compliant' : 'Non-Compliant',
      score: Math.max(0, 100 - (violationRate * 10000)),
      details: {
        totalAccessEvents: totalEvents,
        violations: violations.length,
        violationRate: violationRate
      }
    };
  }

  private evaluateAvailability(metrics: AvailabilityMetric[]): ControlStatus {
    const uptime = metrics.reduce((sum, metric) => sum + metric.uptime, 0) / metrics.length;
    const downtime = metrics.reduce((sum, metric) => sum + metric.downtime, 0);

    return {
      status: uptime >= 0.999 ? 'Compliant' : 'Non-Compliant',
      score: uptime * 100,
      details: {
        uptimePercentage: uptime,
        totalDowntimeMinutes: downtime,
        slaTarget: 0.999,
        slaAchieved: uptime >= 0.999
      }
    };
  }

  async generateSOC2Report(): Promise<SOC2Report> {
    const reportPeriod = {
      start: new Date('2024-01-01'),
      end: new Date('2024-06-30')
    };

    const controlTesting = await this.performControlTesting(reportPeriod);
    const systemDescription = await this.generateSystemDescription();
    const managementAssertion = await this.generateManagementAssertion();
    const auditorOpinion = await this.generateAuditorOpinion();

    return {
      reportType: 'SOC 2 Type II',
      reportPeriod,
      systemDescription,
      managementAssertion,
      controlTesting,
      auditorOpinion,
      attachments: this.generateReportAttachments()
    };
  }

  private async performControlTesting(period: ReportPeriod): Promise<ControlTesting[]> {
    return [
      {
        controlId: 'CC2.1',
        controlDescription: 'Logical and Physical Access Controls',
        testingProcedures: [
          'Review access control policies and procedures',
          'Test user access provisioning and deprovisioning',
          'Verify multi-factor authentication implementation',
          'Test privileged access management'
        ],
        testingResults: [
          {
            testDate: new Date('2024-03-15'),
            procedure: 'User access provisioning test',
            result: 'Pass',
            sampleSize: 25,
            exceptions: 0,
            details: 'All user access requests properly authorized and implemented'
          }
        ],
        overallResult: 'Pass',
        testingPeriod: period
      }
    ];
  }
}

interface CryptographicStandard {
  algorithm: string;
  keySize: number;
  mode: string;
  padding: string;
  approvedFor: string[];
  deprecationDate?: Date;
}

class CryptographyManager {
  private approvedStandards: Map<string, CryptographicStandard>;
  private keyManager: KeyManager;

  constructor() {
    this.approvedStandards = new Map();
    this.initializeStandards();
    this.keyManager = new KeyManager();
  }

  private initializeStandards(): void {
    // AES-256-GCM for data at rest
    this.approvedStandards.set('AES-256-GCM', {
      algorithm: 'AES',
      keySize: 256,
      mode: 'GCM',
      padding: 'None',
      approvedFor: ['data_at_rest', 'data_in_transit'],
      deprecationDate: new Date('2030-01-01')
    });

    // RSA-4096 for digital signatures
    this.approvedStandards.set('RSA-4096', {
      algorithm: 'RSA',
      keySize: 4096,
      mode: 'None',
      padding: 'OAEP',
      approvedFor: ['digital_signatures', 'key_exchange'],
      deprecationDate: new Date('2035-01-01')
    });

    // SHA-256 for hashing
    this.approvedStandards.set('SHA-256', {
      algorithm: 'SHA',
      keySize: 256,
      mode: 'None',
      padding: 'None',
      approvedFor: ['hashing', 'integrity_verification'],
      deprecationDate: new Date('2030-01-01')
    });
  }

  async encryptData(
    data: Buffer, 
    standardId: string, 
    context: EncryptionContext
  ): Promise<EncryptedData> {
    const standard = this.approvedStandards.get(standardId);
    if (!standard) {
      throw new Error(`Cryptographic standard ${standardId} not approved`);
    }

    // Check if standard is deprecated
    if (standard.deprecationDate && new Date() > standard.deprecationDate) {
      throw new Error(`Cryptographic standard ${standardId} is deprecated`);
    }

    // Get appropriate key
    const key = await this.keyManager.getKey(standardId, context);
    
    // Perform encryption
    const encryptedData = await this.performEncryption(data, standard, key);
    
    // Log encryption operation
    await this.logCryptographicOperation('encrypt', standardId, context);

    return encryptedData;
  }

  private async performEncryption(
    data: Buffer, 
    standard: CryptographicStandard, 
    key: CryptoKey
  ): Promise<EncryptedData> {
    switch (standard.algorithm) {
      case 'AES':
        return await this.encryptAES(data, standard, key);
      case 'RSA':
        return await this.encryptRSA(data, standard, key);
      default:
        throw new Error(`Unsupported algorithm: ${standard.algorithm}`);
    }
  }

  private async encryptAES(
    data: Buffer, 
    standard: CryptographicStandard, 
    key: CryptoKey
  ): Promise<EncryptedData> {
    const iv = crypto.randomBytes(16);
    const cipher = crypto.createCipher(standard.mode, key);
    cipher.setAAD(Buffer.from(context.additionalData || ''));

    let encrypted = cipher.update(data);
    encrypted = Buffer.concat([encrypted, cipher.final()]);
    
    const authTag = cipher.getAuthTag();

    return {
      encryptedData: encrypted,
      iv: iv,
      authTag: authTag,
      algorithm: `${standard.algorithm}-${standard.keySize}-${standard.mode}`,
      keyId: key.id,
      timestamp: new Date()
    };
  }

  async verifyCompliance(): Promise<CryptographyComplianceReport> {
    const keyInventory = await this.keyManager.getKeyInventory();
    const algorithmUsage = await this.analyzeAlgorithmUsage();
    const keyRotationStatus = await this.checkKeyRotation();
    const deprecatedStandards = await this.checkDeprecatedStandards();

    return {
      reportDate: new Date(),
      overallCompliance: this.calculateOverallCompliance({
        keyInventory,
        algorithmUsage,
        keyRotationStatus,
        deprecatedStandards
      }),
      keyInventory,
      algorithmUsage,
      keyRotationStatus,
      deprecatedStandards,
      recommendations: this.generateCryptoRecommendations({
        keyInventory,
        algorithmUsage,
        keyRotationStatus,
        deprecatedStandards
      })
    };
  }

  private async checkKeyRotation(): Promise<KeyRotationStatus> {
    const keys = await this.keyManager.getAllKeys();
    const rotationResults = keys.map(key => ({
      keyId: key.id,
      lastRotated: key.lastRotated,
      rotationRequired: this.isRotationRequired(key),
      rotationSchedule: key.rotationSchedule
    }));

    return {
      totalKeys: keys.length,
      keysRequiringRotation: rotationResults.filter(r => r.rotationRequired).length,
      rotationResults,
      complianceScore: this.calculateRotationCompliance(rotationResults)
    };
  }

  private isRotationRequired(key: StoredKey): boolean {
    const daysSinceRotation = (Date.now() - key.lastRotated.getTime()) / (1000 * 60 * 60 * 24);
    return daysSinceRotation > key.rotationSchedule.maxDays;
  }
}