// security/AgentAuthentication.ts
import { JWK, JWS } from 'node-jose';
import crypto from 'crypto';

export class AgentAuthenticator {
  private keyStore: JWK.KeyStore;
  private trustedCAs: Set<string>;
  
  async authenticateAgent(
    agentId: string,
    credential: AgentCredential
  ): Promise<AuthResult> {
    // Verify agent certificate
    const certValid = await this.verifyCertificate(credential.certificate);
    if (!certValid) {
      return { success: false, reason: 'Invalid certificate' };
    }
    
    // Verify agent signature
    const signatureValid = await this.verifySignature(
      credential.signature,
      credential.certificate
    );
    if (!signatureValid) {
      return { success: false, reason: 'Invalid signature' };
    }
    
    // Check agent authorization
    const authorized = await this.checkAuthorization(agentId);
    if (!authorized) {
      return { success: false, reason: 'Agent not authorized' };
    }
    
    // Generate session token
    const token = await this.generateSessionToken(agentId);
    
    return {
      success: true,
      token,
      expiresAt: new Date(Date.now() + 3600000) // 1 hour
    };
  }
  
  private async verifyCertificate(cert: string): Promise<boolean> {
    try {
      const certificate = new crypto.X509Certificate(cert);
      
      // Check if CA is trusted
      const issuer = certificate.issuer;
      if (!this.trustedCAs.has(issuer)) {
        return false;
      }
      
      // Verify certificate chain
      const chainValid = await this.verifyCertificateChain(certificate);
      if (!chainValid) {
        return false;
      }
      
      // Check expiration
      const now = new Date();
      if (certificate.validTo < now || certificate.validFrom > now) {
        return false;
      }
      
      // Check revocation
      const revoked = await this.checkRevocation(certificate);
      if (revoked) {
        return false;
      }
      
      return true;
    } catch (error) {
      console.error('Certificate verification failed:', error);
      return false;
    }
  }
  
  private async generateSessionToken(agentId: string): Promise<string> {
    const key = await JWK.asKey({
      kty: 'RSA',
      use: 'sig',
      key: this.signingKey
    });
    
    const payload = {
      sub: agentId,
      iat: Math.floor(Date.now() / 1000),
      exp: Math.floor(Date.now() / 1000) + 3600,
      aud: 'autosdlc',
      iss: 'autosdlc-auth',
      permissions: await this.getAgentPermissions(agentId)
    };
    
    const token = await JWS.createSign({ format: 'compact' }, key)
      .update(JSON.stringify(payload))
      .final();
      
    return token.toString();
  }
}

// security/SecureMCPChannel.ts
import { createCipheriv, createDecipheriv, randomBytes } from 'crypto';

export class SecureMCPChannel {
  private algorithm = 'aes-256-gcm';
  private keyDerivation = 'pbkdf2';
  
  async encryptMessage(
    message: MCPMessage,
    recipientKey: Buffer
  ): Promise<EncryptedMessage> {
    // Generate random IV
    const iv = randomBytes(16);
    
    // Derive encryption key
    const key = await this.deriveKey(recipientKey, iv);
    
    // Create cipher
    const cipher = createCipheriv(this.algorithm, key, iv);
    
    // Encrypt message
    const plaintext = JSON.stringify(message);
    const encrypted = Buffer.concat([
      cipher.update(plaintext, 'utf8'),
      cipher.final()
    ]);
    
    // Get auth tag
    const authTag = cipher.getAuthTag();
    
    return {
      encrypted: encrypted.toString('base64'),
      iv: iv.toString('base64'),
      authTag: authTag.toString('base64'),
      algorithm: this.algorithm,
      timestamp: new Date().toISOString()
    };
  }
  
  async decryptMessage(
    encryptedMessage: EncryptedMessage,
    privateKey: Buffer
  ): Promise<MCPMessage> {
    // Decode components
    const encrypted = Buffer.from(encryptedMessage.encrypted, 'base64');
    const iv = Buffer.from(encryptedMessage.iv, 'base64');
    const authTag = Buffer.from(encryptedMessage.authTag, 'base64');
    
    // Derive decryption key
    const key = await this.deriveKey(privateKey, iv);
    
    // Create decipher
    const decipher = createDecipheriv(this.algorithm, key, iv);
    decipher.setAuthTag(authTag);
    
    // Decrypt message
    const decrypted = Buffer.concat([
      decipher.update(encrypted),
      decipher.final()
    ]);
    
    // Parse and validate
    const message = JSON.parse(decrypted.toString('utf8'));
    
    // Verify timestamp (prevent replay attacks)
    const messageTime = new Date(encryptedMessage.timestamp).getTime();
    const now = Date.now();
    if (now - messageTime > 300000) { // 5 minutes
      throw new Error('Message too old - possible replay attack');
    }
    
    return message;
  }
  
  private async deriveKey(
    masterKey: Buffer,
    salt: Buffer
  ): Promise<Buffer> {
    return new Promise((resolve, reject) => {
      crypto.pbkdf2(masterKey, salt, 100000, 32, 'sha256', (err, key) => {
        if (err) reject(err);
        else resolve(key);
      });
    });
  }
}

// security/AgentSandbox.ts
import { VM } from 'vm2';
import { Worker } from 'worker_threads';

export class AgentSandbox {
  private resourceLimits = {
    maxMemory: 512 * 1024 * 1024, // 512MB
    maxCPUTime: 30000, // 30 seconds
    maxFileSize: 10 * 1024 * 1024, // 10MB
    allowedModules: [
      'path',
      'fs',
      'crypto',
      'util',
      '@autosdlc/sdk'
    ]
  };
  
  async executeCode(
    code: string,
    context: ExecutionContext
  ): Promise<ExecutionResult> {
    // Validate code
    const validation = await this.validateCode(code);
    if (!validation.safe) {
      throw new SecurityError(`Code validation failed: ${validation.reason}`);
    }
    
    // Create isolated VM
    const vm = new VM({
      timeout: this.resourceLimits.maxCPUTime,
      sandbox: {
        console: this.createSafeConsole(),
        require: this.createSafeRequire(),
        process: this.createSafeProcess(),
        __context: context
      },
      fixAsync: true,
      eval: false,
      wasm: false
    });
    
    try {
      // Execute in worker thread for additional isolation
      const result = await this.executeInWorker(vm, code);
      
      // Validate output
      const outputValidation = await this.validateOutput(result);
      if (!outputValidation.safe) {
        throw new SecurityError(`Output validation failed: ${outputValidation.reason}`);
      }
      
      return result;
    } catch (error) {
      // Log security event
      await this.logSecurityEvent({
        type: 'code_execution_failed',
        agentId: context.agentId,
        error: error.message,
        code: this.sanitizeCode(code)
      });
      
      throw error;
    }
  }
  
  private async validateCode(code: string): Promise<ValidationResult> {
    // Check for dangerous patterns
    const dangerousPatterns = [
      /eval\s*\(/,
      /Function\s*\(/,
      /require\s*\(\s*['"`]child_process/,
      /require\s*\(\s*['"`]cluster/,
      /\.constructor\s*\(/,
      /__proto__/,
      /process\s*\.\s*exit/
    ];
    
    for (const pattern of dangerousPatterns) {
      if (pattern.test(code)) {
        return {
          safe: false,
          reason: `Dangerous pattern detected: ${pattern}`
        };
      }
    }
    
    // Static analysis
    const ast = await this.parseCode(code);
    const staticAnalysis = await this.analyzeAST(ast);
    
    return staticAnalysis;
  }
  
  private createSafeRequire() {
    return (module: string) => {
      if (!this.resourceLimits.allowedModules.includes(module)) {
        throw new Error(`Module '${module}' is not allowed`);
      }
      
      // Return proxied module with limited capabilities
      const originalModule = require(module);
      return this.createModuleProxy(originalModule, module);
    };
  }
}

// security/APIAuth.ts
import { OAuth2Server } from 'oauth2-server';
import { verify } from 'jsonwebtoken';

export class APIAuthenticator {
  private oauth2Server: OAuth2Server;
  private jwtSecret: string;
  
  async authenticateRequest(
    req: Request
  ): Promise<AuthenticationResult> {
    // Check for API key
    const apiKey = req.headers['x-api-key'];
    if (apiKey) {
      return await this.authenticateAPIKey(apiKey);
    }
    
    // Check for OAuth token
    const authHeader = req.headers['authorization'];
    if (authHeader?.startsWith('Bearer ')) {
      const token = authHeader.substring(7);
      return await this.authenticateOAuth(token);
    }
    
    // Check for JWT
    const jwtToken = req.cookies?.['auth-token'];
    if (jwtToken) {
      return await this.authenticateJWT(jwtToken);
    }
    
    return {
      authenticated: false,
      reason: 'No authentication credentials provided'
    };
  }
  
  async authorizeRequest(
    auth: AuthenticationResult,
    resource: string,
    action: string
  ): Promise<AuthorizationResult> {
    if (!auth.authenticated) {
      return { authorized: false, reason: 'Not authenticated' };
    }
    
    // Get user permissions
    const permissions = await this.getUserPermissions(auth.userId);
    
    // Check resource access
    const hasAccess = this.checkResourceAccess(
      permissions,
      resource,
      action
    );
    
    if (!hasAccess) {
      // Log authorization failure
      await this.logAuthFailure({
        userId: auth.userId,
        resource,
        action,
        timestamp: new Date()
      });
      
      return {
        authorized: false,
        reason: 'Insufficient permissions'
      };
    }
    
    return { authorized: true };
  }
  
  private async authenticateAPIKey(
    apiKey: string
  ): Promise<AuthenticationResult> {
    // Hash API key for comparison
    const hashedKey = crypto
      .createHash('sha256')
      .update(apiKey)
      .digest('hex');
    
    // Look up key in database
    const keyRecord = await this.db.apiKeys.findOne({
      hashedKey,
      active: true
    });
    
    if (!keyRecord) {
      return {
        authenticated: false,
        reason: 'Invalid API key'
      };
    }
    
    // Check rate limits
    const rateLimitOk = await this.checkRateLimit(keyRecord.id);
    if (!rateLimitOk) {
      return {
        authenticated: false,
        reason: 'Rate limit exceeded'
      };
    }
    
    // Update last used
    await this.db.apiKeys.updateOne(
      { id: keyRecord.id },
      { $set: { lastUsed: new Date() } }
    );
    
    return {
      authenticated: true,
      userId: keyRecord.userId,
      method: 'api_key'
    };
  }
}

// security/MFA.ts
import speakeasy from 'speakeasy';
import QRCode from 'qrcode';

export class MFAService {
  async setupMFA(userId: string): Promise<MFASetup> {
    // Generate secret
    const secret = speakeasy.generateSecret({
      length: 32,
      name: `AutoSDLC (${userId})`,
      issuer: 'AutoSDLC'
    });
    
    // Generate QR code
    const qrCode = await QRCode.toDataURL(secret.otpauth_url);
    
    // Store encrypted secret
    const encryptedSecret = await this.encryptSecret(secret.base32);
    await this.db.users.updateOne(
      { id: userId },
      {
        $set: {
          mfa: {
            secret: encryptedSecret,
            enabled: false,
            backupCodes: this.generateBackupCodes()
          }
        }
      }
    );
    
    return {
      qrCode,
      secret: secret.base32,
      backupCodes: await this.getBackupCodes(userId)
    };
  }
  
  async verifyMFA(
    userId: string,
    token: string
  ): Promise<MFAVerification> {
    // Get user's secret
    const user = await this.db.users.findOne({ id: userId });
    if (!user?.mfa?.secret) {
      return { valid: false, reason: 'MFA not setup' };
    }
    
    // Decrypt secret
    const secret = await this.decryptSecret(user.mfa.secret);
    
    // Verify token
    const verified = speakeasy.totp.verify({
      secret,
      encoding: 'base32',
      token,
      window: 2 // Allow 2 time steps for clock drift
    });
    
    if (verified) {
      // Log successful MFA
      await this.logMFAEvent({
        userId,
        type: 'verification_success',
        timestamp: new Date()
      });
      
      return { valid: true };
    }
    
    // Check backup codes
    const backupCodeValid = await this.verifyBackupCode(userId, token);
    if (backupCodeValid) {
      return { valid: true, usedBackupCode: true };
    }
    
    // Log failed MFA
    await this.logMFAEvent({
      userId,
      type: 'verification_failed',
      timestamp: new Date()
    });
    
    return { valid: false, reason: 'Invalid token' };
  }
  
  private generateBackupCodes(): string[] {
    const codes = [];
    for (let i = 0; i < 10; i++) {
      codes.push(
        crypto.randomBytes(4).toString('hex').toUpperCase()
      );
    }
    return codes;
  }
}

// security/DataEncryption.ts
import { createCipheriv, createDecipheriv } from 'crypto';
import { KMS } from 'aws-sdk';

export class DataEncryption {
  private kms: KMS;
  private algorithm = 'aes-256-gcm';
  
  async encryptData(
    data: any,
    classification: DataClassification
  ): Promise<EncryptedData> {
    // Serialize data
    const plaintext = JSON.stringify(data);
    
    // Get appropriate key based on classification
    const dataKey = await this.getDataKey(classification);
    
    // Generate IV
    const iv = crypto.randomBytes(16);
    
    // Create cipher
    const cipher = createCipheriv(
      this.algorithm,
      dataKey.plaintext,
      iv
    );
    
    // Encrypt
    const encrypted = Buffer.concat([
      cipher.update(plaintext, 'utf8'),
      cipher.final()
    ]);
    
    // Get auth tag
    const authTag = cipher.getAuthTag();
    
    return {
      ciphertext: encrypted.toString('base64'),
      iv: iv.toString('base64'),
      authTag: authTag.toString('base64'),
      keyId: dataKey.keyId,
      classification,
      algorithm: this.algorithm,
      encryptedAt: new Date()
    };
  }
  
  async decryptData(
    encryptedData: EncryptedData
  ): Promise<any> {
    // Get decryption key
    const dataKey = await this.kms.decrypt({
      CiphertextBlob: Buffer.from(encryptedData.keyId, 'base64')
    }).promise();
    
    // Create decipher
    const decipher = createDecipheriv(
      encryptedData.algorithm,
      dataKey.Plaintext,
      Buffer.from(encryptedData.iv, 'base64')
    );
    
    // Set auth tag
    decipher.setAuthTag(
      Buffer.from(encryptedData.authTag, 'base64')
    );
    
    // Decrypt
    const decrypted = Buffer.concat([
      decipher.update(
        Buffer.from(encryptedData.ciphertext, 'base64')
      ),
      decipher.final()
    ]);
    
    // Parse and return
    return JSON.parse(decrypted.toString('utf8'));
  }
  
  private async getDataKey(
    classification: DataClassification
  ): Promise<DataKey> {
    // Different keys for different data classifications
    const keyAlias = this.getKeyAlias(classification);
    
    // Generate data key
    const response = await this.kms.generateDataKey({
      KeyId: keyAlias,
      KeySpec: 'AES_256'
    }).promise();
    
    return {
      plaintext: response.Plaintext,
      encrypted: response.CiphertextBlob,
      keyId: response.KeyId
    };
  }
  
  private getKeyAlias(classification: DataClassification): string {
    const keyMap = {
      [DataClassification.PUBLIC]: 'alias/autosdlc-public',
      [DataClassification.INTERNAL]: 'alias/autosdlc-internal',
      [DataClassification.CONFIDENTIAL]: 'alias/autosdlc-confidential',
      [DataClassification.SECRET]: 'alias/autosdlc-secret'
    };
    
    return keyMap[classification];
  }
}

// security/KeyRotation.ts
export class KeyRotationService {
  private rotationSchedule = {
    api_keys: 90 * 24 * 60 * 60 * 1000, // 90 days
    jwt_secrets: 30 * 24 * 60 * 60 * 1000, // 30 days
    encryption_keys: 365 * 24 * 60 * 60 * 1000, // 1 year
    certificates: 365 * 24 * 60 * 60 * 1000 // 1 year
  };
  
  async rotateKeys(): Promise<RotationResult> {
    const results = [];
    
    // Rotate API keys
    const apiKeyRotation = await this.rotateAPIKeys();
    results.push(apiKeyRotation);
    
    // Rotate JWT secrets
    const jwtRotation = await this.rotateJWTSecrets();
    results.push(jwtRotation);
    
    // Rotate encryption keys
    const encKeyRotation = await this.rotateEncryptionKeys();
    results.push(encKeyRotation);
    
    // Rotate certificates
    const certRotation = await this.rotateCertificates();
    results.push(certRotation);
    
    return {
      timestamp: new Date(),
      results,
      success: results.every(r => r.success)
    };
  }
  
  private async rotateAPIKeys(): Promise<KeyRotation> {
    const keysToRotate = await this.getKeysNeedingRotation('api_keys');
    const rotated = [];
    
    for (const key of keysToRotate) {
      try {
        // Generate new key
        const newKey = crypto.randomBytes(32).toString('hex');
        
        // Create overlapping validity period
        const overlap = 24 * 60 * 60 * 1000; // 24 hours
        
        // Store new key
        await this.db.apiKeys.insertOne({
          id: uuid(),
          userId: key.userId,
          hashedKey: this.hashKey(newKey),
          validFrom: new Date(),
          validUntil: new Date(Date.now() + this.rotationSchedule.api_keys),
          created: new Date()
        });
        
        // Schedule old key deactivation
        await this.scheduleKeyDeactivation(key.id, overlap);
        
        // Notify user
        await this.notifyKeyRotation(key.userId, 'api_key', newKey);
        
        rotated.push({
          keyId: key.id,
          userId: key.userId,
          rotatedAt: new Date()
        });
      } catch (error) {
        console.error(`Failed to rotate key ${key.id}:`, error);
      }
    }
    
    return {
      type: 'api_keys',
      rotated: rotated.length,
      success: true
    };
  }
}

// security/PatchManagement.ts
export class PatchManagementService {
  async checkForPatches(): Promise<PatchReport> {
    const vulnerabilities = await this.scanVulnerabilities();
    const patches = await this.findAvailablePatches(vulnerabilities);
    
    return {
      critical: patches.filter(p => p.severity === 'critical'),
      high: patches.filter(p => p.severity === 'high'),
      medium: patches.filter(p => p.severity === 'medium'),
      low: patches.filter(p => p.severity === 'low'),
      summary: this.generatePatchSummary(patches)
    };
  }
  
  async applyPatches(
    patches: Patch[],
    options: PatchOptions = {}
  ): Promise<PatchResult> {
    const results = [];
    
    // Sort by priority
    const sortedPatches = this.prioritizePatches(patches);
    
    for (const patch of sortedPatches) {
      try {
        // Test patch in staging
        if (options.testFirst) {
          const testResult = await this.testPatch(patch);
          if (!testResult.success) {
            results.push({
              patch,
              success: false,
              reason: 'Failed testing',
              details: testResult
            });
            continue;
          }
        }
        
        // Apply patch
        const applyResult = await this.applyPatch(patch);
        
        // Verify application
        const verified = await this.verifyPatch(patch);
        
        results.push({
          patch,
          success: verified,
          appliedAt: new Date()
        });
        
        // Log security event
        await this.logSecurityEvent({
          type: 'patch_applied',
          patch: patch.id,
          severity: patch.severity,
          success: verified
        });
      } catch (error) {
        results.push({
          patch,
          success: false,
          error: error.message
        });
      }
    }
    
    return {
      applied: results.filter(r => r.success).length,
      failed: results.filter(r => !r.success).length,
      results
    };
  }
}

// security/IncidentResponse.ts
export class IncidentResponseService {
  private severityLevels = {
    CRITICAL: { responseTime: 15, escalation: 'immediate' },
    HIGH: { responseTime: 60, escalation: '1_hour' },
    MEDIUM: { responseTime: 240, escalation: '4_hours' },
    LOW: { responseTime: 1440, escalation: '24_hours' }
  };
  
  async handleSecurityIncident(
    incident: SecurityIncident
  ): Promise<IncidentResponse> {
    // 1. Detection & Analysis
    const analysis = await this.analyzeIncident(incident);
    
    // 2. Containment
    const containment = await this.containIncident(incident, analysis);
    
    // 3. Eradication
    const eradication = await this.eradicateThreat(incident, analysis);
    
    // 4. Recovery
    const recovery = await this.recoverFromIncident(incident);
    
    // 5. Post-Incident
    const postIncident = await this.postIncidentAnalysis(incident);
    
    // 6. Notification
    await this.notifyStakeholders(incident, analysis);
    
    return {
      incidentId: incident.id,
      severity: analysis.severity,
      contained: containment.success,
      eradicated: eradication.success,
      recovered: recovery.success,
      timeline: this.generateTimeline(incident),
      recommendations: postIncident.recommendations
    };
  }
  
  private async containIncident(
    incident: SecurityIncident,
    analysis: IncidentAnalysis
  ): Promise<ContainmentResult> {
    const actions = [];
    
    // Isolate affected components
    if (analysis.affectedComponents.length > 0) {
      for (const component of analysis.affectedComponents) {
        const isolated = await this.isolateComponent(component);
        actions.push({
          action: 'isolate_component',
          target: component,
          success: isolated
        });
      }
    }
    
    // Block malicious IPs
    if (analysis.maliciousIPs.length > 0) {
      const blocked = await this.blockIPs(analysis.maliciousIPs);
      actions.push({
        action: 'block_ips',
        targets: analysis.maliciousIPs,
        success: blocked
      });
    }
    
    // Revoke compromised credentials
    if (analysis.compromisedCredentials.length > 0) {
      for (const credential of analysis.compromisedCredentials) {
        const revoked = await this.revokeCredential(credential);
        actions.push({
          action: 'revoke_credential',
          target: credential,
          success: revoked
        });
      }
    }
    
    return {
      success: actions.every(a => a.success),
      actions,
      timestamp: new Date()
    };
  }
}

// security/SecurityMonitoring.ts
export class SecurityMonitor {
  private detectionRules: DetectionRule[] = [
    {
      name: 'brute_force_detection',
      pattern: /Failed login.*5 times.*60 seconds/,
      severity: 'HIGH',
      action: 'block_ip'
    },
    {
      name: 'privilege_escalation',
      pattern: /Unauthorized access.*admin.*resources/,
      severity: 'CRITICAL',
      action: 'isolate_account'
    },
    {
      name: 'data_exfiltration',
      pattern: /Large data transfer.*external.*destination/,
      severity: 'CRITICAL',
      action: 'block_transfer'
    },
    {
      name: 'code_injection',
      pattern: /Malicious pattern detected.*code execution/,
      severity: 'CRITICAL',
      action: 'isolate_agent'
    }
  ];
  
  async monitorSecurityEvents(): Promise<void> {
    const eventStream = this.getEventStream();
    
    for await (const event of eventStream) {
      const threats = await this.detectThreats(event);
      
      if (threats.length > 0) {
        for (const threat of threats) {
          await this.handleThreat(threat);
        }
      }
      
      // Update security metrics
      await this.updateSecurityMetrics(event);
    }
  }
  
  private async detectThreats(
    event: SecurityEvent
  ): Promise<Threat[]> {
    const threats = [];
    
    // Check against detection rules
    for (const rule of this.detectionRules) {
      if (rule.pattern.test(event.message)) {
        threats.push({
          rule: rule.name,
          severity: rule.severity,
          event: event,
          detectedAt: new Date()
        });
      }
    }
    
    // ML-based anomaly detection
    const anomaly = await this.detectAnomaly(event);
    if (anomaly.score > 0.8) {
      threats.push({
        rule: 'ml_anomaly_detection',
        severity: this.calculateAnomalySeverity(anomaly.score),
        event: event,
        anomaly: anomaly,
        detectedAt: new Date()
      });
    }
    
    return threats;
  }
}

// security/AuditLogger.ts
export class AuditLogger {
  private requiredFields = [
    'timestamp',
    'userId',
    'action',
    'resource',
    'result',
    'ipAddress',
    'userAgent'
  ];
  
  async logAuditEvent(event: AuditEvent): Promise<void> {
    // Validate required fields
    this.validateAuditEvent(event);
    
    // Add metadata
    const enrichedEvent = {
      ...event,
      id: uuid(),
      timestamp: new Date().toISOString(),
      environment: process.env.NODE_ENV,
      version: process.env.APP_VERSION
    };
    
    // Sign event for integrity
    const signature = await this.signEvent(enrichedEvent);
    enrichedEvent.signature = signature;
    
    // Store in immutable log
    await this.storeAuditLog(enrichedEvent);
    
    // Forward to SIEM
    await this.forwardToSIEM(enrichedEvent);
    
    // Check for compliance violations
    await this.checkCompliance(enrichedEvent);
  }
  
  private async signEvent(event: any): Promise<string> {
    const canonical = this.canonicalizeEvent(event);
    const signature = crypto
      .createHmac('sha256', this.auditKey)
      .update(canonical)
      .digest('hex');
      
    return signature;
  }
  
  async queryAuditLogs(
    query: AuditQuery
  ): Promise<AuditLogResult> {
    // Verify query authorization
    const authorized = await this.authorizeQuery(query);
    if (!authorized) {
      throw new Error('Unauthorized audit query');
    }
    
    // Execute query with filters
    const logs = await this.auditDb.query({
      startTime: query.startTime,
      endTime: query.endTime,
      userId: query.userId,
      action: query.action,
      resource: query.resource
    });
    
    // Verify log integrity
    const verified = await this.verifyLogIntegrity(logs);
    
    return {
      logs: verified.logs,
      totalCount: verified.count,
      integrityCheck: verified.integrity
    };
  }
}