NIST 800-53r5 OSCAL-Native Implementation Plan¶

// compliance/oscal/types/oscal-catalog.ts

// Direct mapping from NIST OSCAL JSON Schema
export interface OSCALCatalog {
  catalog: {
    uuid: string;
    metadata: OSCALMetadata;
    params?: OSCALParameter[];
    controls: OSCALControl[];
    groups?: OSCALGroup[];
    "back-matter"?: OSCALBackMatter;
  };
}

export interface OSCALControl {
  id: string;            // e.g., "ac-1"
  class?: string;        // e.g., "SP800-53"
  title: string;
  params?: OSCALParameter[];
  props?: OSCALProperty[];
  links?: OSCALLink[];
  parts: OSCALPart[];
  controls?: OSCALControl[];  // Control enhancements
}

export interface OSCALPart {
  id?: string;
  name: string;          // e.g., "statement", "guidance", "objective"
  ns?: string;
  class?: string;
  title?: string;
  props?: OSCALProperty[];
  prose?: string;        // Actual control text
  parts?: OSCALPart[];
  links?: OSCALLink[];
}

export interface OSCALParameter {
  id: string;            // e.g., "ac-01_odp.01"
  class?: string;
  "depends-on"?: string;
  props?: OSCALProperty[];
  links?: OSCALLink[];
  label?: string;
  usage?: string;
  constraints?: OSCALConstraint[];
  guidelines?: OSCALGuideline[];
  values?: string[];
  select?: OSCALSelection;
  remarks?: string;
}

// Enhanced interfaces for semantic analysis
export interface EnhancedOSCALControl extends OSCALControl {
  semanticTags: SemanticTag[];
  repositoryMappings: RepositoryMapping[];
  implementationPatterns: ImplementationPattern[];
  evidenceRequirements: EvidenceRequirement[];
  knowledgeGraphNodes: KnowledgeNode[];
}

export interface SemanticTag {
  type: 'technology' | 'process' | 'administrative' | 'technical' | 'operational';
  domain: string;        // e.g., 'authentication', 'encryption', 'logging'
  keywords: string[];
  confidence: number;    // 0-1 confidence score
  source: 'llm-analysis' | 'manual-review' | 'pattern-matching';
}

export interface RepositoryMapping {
  standardPath: string;  // Path to repository standard
  mappingType: 'primary' | 'supporting' | 'evidence' | 'documentation';
  relevanceScore: number; // 0-1 relevance score
  implementationCoverage: number; // 0-1 coverage percentage
  automaticDetection: boolean;
  lastValidated: Date;
  semanticAlignment: SemanticAlignment;
}

export interface ImplementationPattern {
  pattern: string;       // Regex or AST pattern
  language: string[];    // Programming languages
  framework: string[];   // Frameworks where applicable
  description: string;
  exampleCode: string;
  validationMethod: 'static-analysis' | 'runtime-check' | 'configuration-scan';
}

export interface KnowledgeNode {
  id: string;
  type: 'control' | 'standard' | 'implementation' | 'evidence';
  relationships: {
    implements?: string[];
    supports?: string[];
    requires?: string[];
    conflicts?: string[];
  };
  attributes: Record<string, any>;
}

// compliance/automation/semantic-tagger.ts

import { OpenAI } from 'openai';
import { OSCALControl, EnhancedOSCALControl, SemanticTag } from '../oscal/types';

export class SemanticControlTagger {
  private openai: OpenAI;
  private knowledgeBase: Map<string, SemanticTag[]>;
  private vectorStore: VectorStore;

  constructor() {
    this.openai = new OpenAI({ apiKey: process.env.OPENAI_API_KEY });
    this.loadKnowledgeBase();
    this.initializeVectorStore();
  }

  /**
   * Analyze OSCAL control and generate semantic tags using LLM
   */
  async analyzeControl(control: OSCALControl): Promise<EnhancedOSCALControl> {
    // Extract control narrative text
    const controlText = this.extractControlNarrative(control);

    // Generate semantic analysis prompt
    const analysisPrompt = this.buildSemanticAnalysisPrompt(control, controlText);

    // LLM-powered semantic analysis
    const semanticAnalysis = await this.performLLMAnalysis(analysisPrompt);

    // Generate vector embeddings
    const embeddings = await this.generateEmbeddings(controlText);

    // Find similar controls and standards
    const similarItems = await this.findSimilarItems(embeddings);

    // Extract implementation patterns
    const patterns = await this.extractImplementationPatterns(semanticAnalysis);

    // Map to repository standards
    const repositoryMappings = await this.mapToRepositoryStandards(
      control,
      semanticAnalysis,
      similarItems
    );

    return {
      ...control,
      semanticTags: semanticAnalysis.tags,
      repositoryMappings,
      implementationPatterns: patterns,
      evidenceRequirements: semanticAnalysis.evidenceRequirements,
      knowledgeGraphNodes: this.generateKnowledgeNodes(control, semanticAnalysis)
    };
  }

  /**
   * Build LLM prompt for semantic analysis
   */
  private buildSemanticAnalysisPrompt(control: OSCALControl, narrative: string): string {
    return `
# NIST 800-53r5 Control Semantic Analysis

## Control Information
- **ID**: ${control.id}
- **Title**: ${control.title}
- **Class**: ${control.class || 'SP800-53'}

## Control Statement
${narrative}

## Analysis Instructions
Analyze this security control and provide a comprehensive semantic breakdown:

### 1. Domain Classification
Identify the primary security domains this control addresses:
- Access Control & Identity Management
- Audit & Accountability
- Configuration Management
- System & Communications Protection
- Physical & Environmental Protection
- Risk Assessment & Management
- Other (specify)

### 2. Technology Mapping
Identify specific technologies, frameworks, and implementation approaches:
- Programming languages where this is typically implemented
- Security frameworks that address this control
- Infrastructure components involved
- Development tools and processes

### 3. Implementation Patterns
Describe common implementation patterns:
- Code-level implementations
- Configuration-based implementations
- Process-based implementations
- Documentation requirements

### 4. Evidence Requirements
What evidence demonstrates compliance:
- Code artifacts that provide evidence
- Configuration files that demonstrate compliance
- Documentation that supports implementation
- Automated tests that validate compliance

### 5. Repository Standard Mapping
Based on the williamzujkowski/standards repository structure, suggest mappings to:
- Development standards that would implement this control
- Project templates that should include this control
- Configuration patterns that demonstrate compliance
- Testing standards that validate implementation

### 6. Semantic Keywords
Generate relevant keywords for search and discovery:
- Technical terms
- Process terms
- Compliance terms
- Industry-standard terms

Return analysis as structured JSON with confidence scores for each mapping.
`;
  }

  /**
   * Perform LLM analysis of control
   */
  private async performLLMAnalysis(prompt: string): Promise<SemanticAnalysisResult> {
    const completion = await this.openai.chat.completions.create({
      model: "gpt-4-turbo-preview",
      messages: [
        {
          role: "system",
          content: `You are a cybersecurity expert and compliance specialist with deep knowledge of NIST 800-53r5 controls and software development practices. Analyze security controls and provide detailed semantic mappings to development standards and implementation patterns.`
        },
        {
          role: "user",
          content: prompt
        }
      ],
      response_format: { type: "json_object" },
      temperature: 0.1  // Low temperature for consistent analysis
    });

    return JSON.parse(completion.choices[0].message.content);
  }

  /**
   * Map control to repository standards using semantic similarity
   */
  private async mapToRepositoryStandards(
    control: OSCALControl,
    analysis: SemanticAnalysisResult,
    similarItems: SimilarItem[]
  ): Promise<RepositoryMapping[]> {
    const mappings: RepositoryMapping[] = [];

    // Scan repository for relevant standards
    const repoStandards = await this.scanRepositoryStandards();

    for (const standard of repoStandards) {
      const mapping = await this.analyzeStandardAlignment(
        control,
        standard,
        analysis
      );

      if (mapping.relevanceScore > 0.3) { // Threshold for inclusion
        mappings.push(mapping);
      }
    }

    return mappings.sort((a, b) => b.relevanceScore - a.relevanceScore);
  }

  /**
   * Analyze alignment between control and repository standard
   */
  private async analyzeStandardAlignment(
    control: OSCALControl,
    standard: RepositoryStandard,
    analysis: SemanticAnalysisResult
  ): Promise<RepositoryMapping> {
    const alignmentPrompt = `
# Control-Standard Alignment Analysis

## NIST Control
- **ID**: ${control.id}
- **Title**: ${control.title}
- **Domains**: ${analysis.domains.join(', ')}
- **Keywords**: ${analysis.keywords.join(', ')}

## Repository Standard
- **Path**: ${standard.path}
- **Title**: ${standard.title}
- **Content**: ${standard.content.substring(0, 2000)}...

## Analysis Task
Determine the alignment between this NIST control and repository standard:

1. **Relevance Score** (0-1): How relevant is this standard to the control?
2. **Mapping Type**: primary | supporting | evidence | documentation
3. **Implementation Coverage** (0-1): What percentage of the control does this standard address?
4. **Semantic Alignment**: Specific aspects that align
5. **Evidence Potential**: What evidence this standard could provide

Return structured JSON with scores and rationale.
`;

    const alignmentResult = await this.performLLMAnalysis(alignmentPrompt);

    return {
      standardPath: standard.path,
      mappingType: alignmentResult.mappingType,
      relevanceScore: alignmentResult.relevanceScore,
      implementationCoverage: alignmentResult.implementationCoverage,
      automaticDetection: true,
      lastValidated: new Date(),
      semanticAlignment: alignmentResult.semanticAlignment
    };
  }
}

// Supporting interfaces
interface SemanticAnalysisResult {
  domains: string[];
  technologies: string[];
  implementationPatterns: ImplementationPattern[];
  evidenceRequirements: EvidenceRequirement[];
  keywords: string[];
  tags: SemanticTag[];
  confidence: number;
}

interface RepositoryStandard {
  path: string;
  title: string;
  content: string;
  type: 'development-standard' | 'project-template' | 'configuration' | 'documentation';
  lastModified: Date;
}

// compliance/automation/knowledge-manager.ts

export class KnowledgeGraphManager {
  private graph: Map<string, KnowledgeNode>;
  private semanticIndex: SemanticIndex;
  private taxonomyManager: TaxonomyManager;

  constructor() {
    this.initializeFromKnowledgeStandards();
  }

  /**
   * Initialize knowledge graph from KNOWLEDGE_MANAGEMENT_STANDARDS.md
   */
  private async initializeFromKnowledgeStandards(): Promise<void> {
    // Parse KNOWLEDGE_MANAGEMENT_STANDARDS.md for taxonomies and relationships
    const knowledgeStandards = await this.parseKnowledgeStandards();

    // Create semantic taxonomies for NIST controls
    this.taxonomyManager = new TaxonomyManager({
      securityDomains: knowledgeStandards.securityTaxonomy,
      implementationTypes: knowledgeStandards.implementationTaxonomy,
      evidenceTypes: knowledgeStandards.evidenceTaxonomy,
      complianceFrameworks: knowledgeStandards.frameworkTaxonomy
    });

    // Build knowledge graph connections
    await this.buildKnowledgeGraph();
  }

  /**
   * Create semantic connections between controls and standards
   */
  async createSemanticConnections(
    control: EnhancedOSCALControl,
    repositoryStandards: RepositoryStandard[]
  ): Promise<SemanticConnection[]> {
    const connections: SemanticConnection[] = [];

    for (const standard of repositoryStandards) {
      // Analyze semantic similarity using knowledge graph
      const similarity = await this.calculateSemanticSimilarity(
        control,
        standard
      );

      // Generate bidirectional relationships
      if (similarity.score > 0.5) {
        connections.push({
          sourceId: control.id,
          targetId: standard.path,
          relationshipType: this.inferRelationshipType(similarity),
          strength: similarity.score,
          evidence: similarity.evidence,
          semanticPaths: similarity.paths
        });
      }
    }

    return connections;
  }

  /**
   * Auto-tag repository standards with NIST control mappings
   */
  async autoTagRepositoryStandards(): Promise<TaggingResult[]> {
    const results: TaggingResult[] = [];
    const repoStandards = await this.scanAllRepositoryStandards();

    for (const standard of repoStandards) {
      const taggingResult = await this.analyzeStandardForControlMappings(standard);

      if (taggingResult.mappings.length > 0) {
        // Update the standard file with NIST control tags
        await this.insertNISTControlTags(standard.path, taggingResult.mappings);
        results.push(taggingResult);
      }
    }

    return results;
  }

  /**
   * Insert NIST control tags into repository standard files
   */
  private async insertNISTControlTags(
    filePath: string,
    mappings: ControlMapping[]
  ): Promise<void> {
    const fileContent = await readFile(filePath, 'utf-8');

    // Generate YAML frontmatter with NIST mappings
    const nistMappings = {
      nist_800_53_r5: {
        controls: mappings.map(m => ({
          control_id: m.controlId,
          control_name: m.controlName,
          mapping_type: m.mappingType,
          relevance_score: m.relevanceScore,
          implementation_coverage: m.implementationCoverage,
          evidence_provided: m.evidenceTypes,
          last_analyzed: new Date().toISOString(),
          semantic_keywords: m.semanticKeywords
        })),
        auto_generated: true,
        generated_date: new Date().toISOString(),
        analysis_confidence: mappings.reduce((sum, m) => sum + m.confidence, 0) / mappings.length
      }
    };

    // Check if file already has frontmatter
    const frontmatterRegex = /^---\n([\s\S]*?)\n---\n/;
    const existingFrontmatter = fileContent.match(frontmatterRegex);

    let updatedContent: string;

    if (existingFrontmatter) {
      // Update existing frontmatter
      const existingMeta = yaml.parse(existingFrontmatter[1]);
      const mergedMeta = { ...existingMeta, ...nistMappings };
      const newFrontmatter = `---\n${yaml.stringify(mergedMeta)}---\n`;
      updatedContent = fileContent.replace(frontmatterRegex, newFrontmatter);
    } else {
      // Add new frontmatter
      const newFrontmatter = `---\n${yaml.stringify(nistMappings)}---\n\n`;
      updatedContent = newFrontmatter + fileContent;
    }

    await writeFile(filePath, updatedContent);

    // Log the tagging action
    console.log(`✅ Tagged ${filePath} with ${mappings.length} NIST control mappings`);
  }

  /**
   * Analyze repository standard for NIST control mappings using LLM
   */
  private async analyzeStandardForControlMappings(
    standard: RepositoryStandard
  ): Promise<TaggingResult> {
    const analysisPrompt = `
# Repository Standard Analysis for NIST 800-53r5 Mapping

## Standard Information
- **Path**: ${standard.path}
- **Title**: ${standard.title}
- **Type**: ${standard.type}
- **Content Length**: ${standard.content.length} characters

## Standard Content
${standard.content.substring(0, 4000)}${standard.content.length > 4000 ? '...' : ''}

## Analysis Task
Analyze this repository standard and identify which NIST 800-53r5 controls it relates to:

### Instructions
1. **Read the standard content carefully**
2. **Identify security-related concepts, practices, and requirements**
3. **Map to specific NIST 800-53r5 controls** based on:
   - Authentication & Access Control (AC family)
   - Audit & Accountability (AU family)
   - Configuration Management (CM family)
   - System & Communications Protection (SC family)
   - All other relevant families

### Output Format
For each identified control mapping, provide:
- **Control ID** (e.g., "ac-01", "au-02")
- **Control Name** (official NIST title)
- **Mapping Type**: primary | supporting | evidence | documentation
- **Relevance Score** (0-1): How relevant is this standard to the control
- **Implementation Coverage** (0-1): What percentage of control requirements this addresses
- **Evidence Types**: What types of evidence this standard provides
- **Semantic Keywords**: Key terms that create the connection
- **Confidence Score** (0-1): Confidence in this mapping

### Focus Areas
Look specifically for content related to:
- Security policies and procedures
- Access control mechanisms
- Logging and monitoring
- Configuration management
- Encryption and data protection
- Testing and validation
- Documentation requirements
- Incident response
- Risk management

Return structured JSON with all identified mappings.
`;

    const analysisResult = await this.performLLMAnalysis(analysisPrompt);

    return {
      standardPath: standard.path,
      standardTitle: standard.title,
      mappings: analysisResult.mappings || [],
      analysisConfidence: analysisResult.confidence || 0,
      analysisDate: new Date(),
      semanticKeywords: analysisResult.keywords || []
    };
  }
}

// Knowledge management interfaces
interface KnowledgeNode {
  id: string;
  type: 'control' | 'standard' | 'implementation' | 'evidence';
  title: string;
  content: string;
  metadata: Record<string, any>;
  relationships: Map<string, Relationship>;
  semanticEmbedding: number[];
}

interface SemanticConnection {
  sourceId: string;
  targetId: string;
  relationshipType: 'implements' | 'supports' | 'requires' | 'evidences' | 'documents';
  strength: number;
  evidence: string[];
  semanticPaths: string[];
}

interface TaggingResult {
  standardPath: string;
  standardTitle: string;
  mappings: ControlMapping[];
  analysisConfidence: number;
  analysisDate: Date;
  semanticKeywords: string[];
}

interface ControlMapping {
  controlId: string;
  controlName: string;
  mappingType: 'primary' | 'supporting' | 'evidence' | 'documentation';
  relevanceScore: number;
  implementationCoverage: number;
  evidenceTypes: string[];
  semanticKeywords: string[];
  confidence: number;
}

// compliance/automation/oscal-ssp-generator.ts

export class OSCALSystemSecurityPlanGenerator {
  private catalog: OSCALCatalog;
  private knowledgeManager: KnowledgeGraphManager;
  private evidenceHarvester: EvidenceHarvester;

  /**
   * Generate complete OSCAL System Security Plan
   */
  async generateOSCALSSP(
    projectContext: ProjectContext,
    baseline: 'low' | 'moderate' | 'high' = 'moderate'
  ): Promise<OSCALSystemSecurityPlan> {
    // Load appropriate baseline profile
    const baselineProfile = await this.loadBaselineProfile(baseline);

    // Analyze project for implemented controls
    const implementedControls = await this.analyzeProjectImplementation(projectContext);

    // Generate system characteristics
    const systemCharacteristics = await this.generateSystemCharacteristics(projectContext);

    // Create control implementations
    const controlImplementations = await this.generateControlImplementations(
      baselineProfile,
      implementedControls,
      projectContext
    );

    // Generate OSCAL SSP
    const ssp: OSCALSystemSecurityPlan = {
      "system-security-plan": {
        uuid: this.generateUUID(),
        metadata: {
          title: `System Security Plan - ${projectContext.systemName}`,
          "last-modified": new Date().toISOString(),
          version: "1.0.0",
          "oscal-version": "1.1.2",
          roles: this.generateRoles(),
          parties: this.generateParties(projectContext),
          "responsible-parties": this.generateResponsibleParties()
        },
        "import-profile": {
          href: `#${baselineProfile.uuid}`,
          remarks: `Importing ${baseline} baseline profile`
        },
        "system-characteristics": systemCharacteristics,
        "system-implementation": {
          uuid: this.generateUUID(),
          description: `Implementation details for ${projectContext.systemName}`,
          users: this.generateSystemUsers(projectContext),
          components: await this.generateSystemComponents(projectContext),
          "inventory-items": await this.generateInventoryItems(projectContext),
          remarks: "Auto-generated from repository analysis"
        },
        "control-implementation": {
          uuid: this.generateUUID(),
          description: "Control implementations derived from repository standards",
          "implemented-requirements": controlImplementations
        },
        "back-matter": await this.generateBackMatter(projectContext)
      }
    };

    return ssp;
  }

  /**
   * Generate control implementations with evidence linkage
   */
  private async generateControlImplementations(
    baselineProfile: OSCALProfile,
    implementedControls: Map<string, ImplementationAnalysis>,
    projectContext: ProjectContext
  ): Promise<OSCALImplementedRequirement[]> {
    const implementations: OSCALImplementedRequirement[] = [];

    for (const import_item of baselineProfile.profile.imports) {
      if (import_item.include_controls) {
        for (const control_id of import_item.include_controls.with_ids || []) {
          const analysis = implementedControls.get(control_id);
          const controlData = await this.getControlData(control_id);

          const implementation: OSCALImplementedRequirement = {
            uuid: this.generateUUID(),
            "control-id": control_id,
            description: await this.generateImplementationDescription(
              controlData,
              analysis,
              projectContext
            ),
            statements: await this.generateImplementationStatements(
              controlData,
              analysis
            ),
            "responsible-roles": this.mapResponsibleRoles(control_id),
            remarks: analysis ?
              `Implementation detected via automated analysis. Confidence: ${analysis.confidence}` :
              "Control implementation not automatically detected"
          };

          // Add evidence if available
          if (analysis?.evidence.length > 0) {
            implementation.props = [
              {
                name: "implementation-status",
                value: analysis.status,
                remarks: `Based on analysis of ${analysis.evidence.length} evidence items`
              }
            ];

            // Link to evidence in back-matter
            implementation.links = analysis.evidence.map(evidence => ({
              href: `#evidence-${this.sanitizeId(evidence.location)}`,
              rel: "evidence",
              "media-type": evidence.type === 'code' ? 'text/plain' : 'application/json'
            }));
          }

          implementations.push(implementation);
        }
      }
    }

    return implementations;
  }

  /**
   * Generate system characteristics from project analysis
   */
  private async generateSystemCharacteristics(
    projectContext: ProjectContext
  ): Promise<OSCALSystemCharacteristics> {
    const techStack = await this.analyzeTechnologyStack(projectContext);
    const dataFlow = await this.analyzeDataFlow(projectContext);
    const securityImpact = await this.assessSecurityImpact(projectContext);

    return {
      "system-ids": [
        {
          identifier: projectContext.systemId,
          scheme: "organizational"
        }
      ],
      "system-name": projectContext.systemName,
      "system-name-short": projectContext.systemNameShort,
      description: projectContext.description,
      "security-sensitivity-level": securityImpact.level,
      "system-information": {
        "information-types": dataFlow.informationTypes.map(type => ({
          uuid: this.generateUUID(),
          title: type.name,
          description: type.description,
          "categorizations": type.categorizations,
          "confidentiality-impact": type.impacts.confidentiality,
          "integrity-impact": type.impacts.integrity,
          "availability-impact": type.impacts.availability
        }))
      },
      "security-impact-level": {
        "security-objective-confidentiality": securityImpact.confidentiality,
        "security-objective-integrity": securityImpact.integrity,
        "security-objective-availability": securityImpact.availability
      },
      status: {
        state: projectContext.deploymentStatus || "under-development",
        remarks: "Status determined from repository analysis"
      },
      "authorization-boundary": {
        description: await this.generateAuthorizationBoundary(techStack, dataFlow)
      },
      "network-architecture": {
        description: await this.generateNetworkArchitecture(techStack)
      },
      "data-flow": {
        description: dataFlow.description,
        diagrams: dataFlow.diagrams
      },
      remarks: `System characteristics auto-generated from analysis of ${projectContext.repositoryPath}`
    };
  }
}

// OSCAL SSP Data Models (subset for illustration)
interface OSCALSystemSecurityPlan {
  "system-security-plan": {
    uuid: string;
    metadata: OSCALMetadata;
    "import-profile": OSCALImportProfile;
    "system-characteristics": OSCALSystemCharacteristics;
    "system-implementation": OSCALSystemImplementation;
    "control-implementation": OSCALControlImplementation;
    "back-matter"?: OSCALBackMatter;
  };
}

interface OSCALImplementedRequirement {
  uuid: string;
  "control-id": string;
  description: string;
  props?: OSCALProperty[];
  links?: OSCALLink[];
  statements?: OSCALImplementationStatement[];
  "by-components"?: OSCALByComponent[];
  "responsible-roles"?: OSCALResponsibleRole[];
  remarks?: string;
}

interface OSCALSystemCharacteristics {
  "system-ids": OSCALSystemId[];
  "system-name": string;
  "system-name-short"?: string;
  description: string;
  props?: OSCALProperty[];
  links?: OSCALLink[];
  "date-authorized"?: string;
  "security-sensitivity-level": string;
  "system-information": OSCALSystemInformation;
  "security-impact-level": OSCALSecurityImpactLevel;
  status: OSCALSystemStatus;
  "authorization-boundary": OSCALAuthorizationBoundary;
  "network-architecture"?: OSCALNetworkArchitecture;
  "data-flow"?: OSCALDataFlow;
  remarks?: string;
}

// compliance/automation/evidence-harvester.ts

export class EvidenceHarvester {
  private semanticTagger: SemanticControlTagger;
  private knowledgeManager: KnowledgeGraphManager;
  private codeAnalyzer: CodeAnalyzer;

  /**
   * Harvest all evidence and generate OSCAL Assessment Results
   */
  async harvestEvidence(projectContext: ProjectContext): Promise<OSCALAssessmentResults> {
    const evidenceItems: EvidenceItem[] = [];

    // Harvest code evidence
    evidenceItems.push(...await this.harvestCodeEvidence(projectContext));

    // Harvest configuration evidence
    evidenceItems.push(...await this.harvestConfigurationEvidence(projectContext));

    // Harvest documentation evidence
    evidenceItems.push(...await this.harvestDocumentationEvidence(projectContext));

    // Harvest infrastructure evidence
    evidenceItems.push(...await this.harvestInfrastructureEvidence(projectContext));

    // Generate OSCAL Assessment Results
    return this.generateOSCALAssessmentResults(evidenceItems, projectContext);
  }

  /**
   * Harvest code evidence using AST analysis and semantic matching
   */
  private async harvestCodeEvidence(projectContext: ProjectContext): Promise<EvidenceItem[]> {
    const evidence: EvidenceItem[] = [];
    const codeFiles = await this.scanCodeFiles(projectContext.repositoryPath);

    for (const file of codeFiles) {
      const analysis = await this.codeAnalyzer.analyzeFile(file);

      // Map security patterns to NIST controls using semantic analysis
      for (const pattern of analysis.securityPatterns) {
        const controlMappings = await this.semanticTagger.mapPatternToControls(pattern);

        for (const mapping of controlMappings) {
          evidence.push({
            id: this.generateEvidenceId(file.path, mapping.controlId),
            type: 'code',
            title: `${mapping.controlId} Implementation in ${file.name}`,
            description: `Security implementation detected: ${pattern.description}`,
            location: file.path,
            "related-controls": [mapping.controlId],
            "implementation-status": this.assessImplementationStatus(pattern),
            "evidence-artifacts": [
              {
                type: 'source-code',
                location: file.path,
                "line-range": pattern.lineRange,
                content: pattern.codeSnippet,
                "analysis-method": 'automated-static-analysis'
              }
            ],
            "validation-method": 'static-code-analysis',
            "automation-level": 'fully-automated',
            confidence: mapping.confidence,
            "last-collected": new Date().toISOString(),
            metadata: {
              language: file.language,
              framework: analysis.detectedFrameworks,
              "security-pattern": pattern.patternType,
              "analysis-tools": analysis.toolsUsed
            }
          });
        }
      }
    }

    return evidence;
  }

  /**
   * Harvest configuration evidence with semantic interpretation
   */
  private async harvestConfigurationEvidence(
    projectContext: ProjectContext
  ): Promise<EvidenceItem[]> {
    const evidence: EvidenceItem[] = [];
    const configFiles = await this.scanConfigurationFiles(projectContext.repositoryPath);

    for (const file of configFiles) {
      const configAnalysis = await this.analyzeConfiguration(file);

      // Map security configurations to controls
      for (const securityConfig of configAnalysis.securityConfigurations) {
        const controlMappings = await this.mapConfigurationToControls(securityConfig);

        for (const mapping of controlMappings) {
          evidence.push({
            id: this.generateEvidenceId(file.path, mapping.controlId),
            type: 'configuration',
            title: `${mapping.controlId} Configuration in ${file.name}`,
            description: `Security configuration detected: ${securityConfig.description}`,
            location: file.path,
            "related-controls": [mapping.controlId],
            "implementation-status": this.assessConfigImplementationStatus(securityConfig),
            "evidence-artifacts": [
              {
                type: 'configuration-file',
                location: file.path,
                "config-section": securityConfig.section,
                content: securityConfig.value,
                "analysis-method": 'configuration-parsing'
              }
            ],
            "validation-method": 'configuration-validation',
            "automation-level": 'fully-automated',
            confidence: mapping.confidence,
            "last-collected": new Date().toISOString(),
            metadata: {
              "config-type": file.type,
              "config-format": file.format,
              "security-setting": securityConfig.settingType
            }
          });
        }
      }
    }

    return evidence;
  }

  /**
   * Generate OSCAL Assessment Results from evidence
   */
  private generateOSCALAssessmentResults(
    evidence: EvidenceItem[],
    projectContext: ProjectContext
  ): OSCALAssessmentResults {
    // Group evidence by control
    const evidenceByControl = this.groupEvidenceByControl(evidence);

    // Generate assessment findings
    const findings: OSCALFinding[] = [];

    for (const [controlId, controlEvidence] of evidenceByControl) {
      const finding = this.generateControlFinding(controlId, controlEvidence);
      findings.push(finding);
    }

    return {
      "assessment-results": {
        uuid: this.generateUUID(),
        metadata: {
          title: `Automated Security Assessment - ${projectContext.systemName}`,
          "last-modified": new Date().toISOString(),
          version: "1.0.0",
          "oscal-version": "1.1.2",
          parties: this.generateAssessmentParties(),
          "responsible-parties": this.generateAssessmentResponsibleParties()
        },
        "import-ap": {
          href: "#automated-assessment-plan",
          remarks: "Automated assessment using repository analysis"
        },
        "local-definitions": {
          "assessment-activities": this.generateAssessmentActivities(),
          "assessment-methods": this.generateAssessmentMethods()
        },
        results: [
          {
            uuid: this.generateUUID(),
            title: "Automated Repository Analysis Results",
            description: "Assessment results from automated analysis of repository",
            start: new Date().toISOString(),
            end: new Date().toISOString(),
            "local-definitions": {
              "assessment-activities": this.generateAssessmentActivities()
            },
            findings,
            remarks: `Assessed ${evidence.length} evidence items across ${evidenceByControl.size} controls`
          }
        ],
        "back-matter": this.generateEvidenceBackMatter(evidence)
      }
    };
  }
}

// Evidence interfaces
interface EvidenceItem {
  id: string;
  type: 'code' | 'configuration' | 'documentation' | 'infrastructure' | 'process';
  title: string;
  description: string;
  location: string;
  "related-controls": string[];
  "implementation-status": 'implemented' | 'partially-implemented' | 'not-implemented';
  "evidence-artifacts": EvidenceArtifact[];
  "validation-method": string;
  "automation-level": 'fully-automated' | 'semi-automated' | 'manual';
  confidence: number;
  "last-collected": string;
  metadata: Record<string, any>;
}

interface EvidenceArtifact {
  type: string;
  location: string;
  content?: string;
  "analysis-method": string;
  [key: string]: any; // Additional type-specific properties
}

// compliance/automation/continuous-compliance-monitor.ts

export class ContinuousComplianceMonitor {
  private oscalSSPGenerator: OSCALSystemSecurityPlanGenerator;
  private evidenceHarvester: EvidenceHarvester;
  private knowledgeManager: KnowledgeGraphManager;
  private changeDetector: ChangeDetector;

  /**
   * Monitor repository for compliance-affecting changes
   */
  async startMonitoring(projectContext: ProjectContext): Promise<void> {
    // Set up file system watchers
    this.setupFileWatchers(projectContext.repositoryPath);

    // Set up scheduled assessments
    this.setupScheduledAssessments(projectContext);

    // Initialize baseline compliance state
    const baselineAssessment = await this.performFullAssessment(projectContext);
    await this.storeBaselineState(baselineAssessment);

    console.log('🔄 Continuous compliance monitoring started');
  }

  /**
   * React to repository changes and assess compliance impact
   */
  private async handleRepositoryChange(change: RepositoryChange): Promise<void> {
    // Analyze change for compliance impact
    const impactAnalysis = await this.analyzeComplianceImpact(change);

    if (impactAnalysis.hasComplianceImpact) {
      // Perform targeted re-assessment
      const affectedControls = impactAnalysis.affectedControls;
      const updatedAssessment = await this.performTargetedAssessment(
        affectedControls,
        change.projectContext
      );

      // Compare with baseline
      const complianceChange = await this.compareWithBaseline(
        updatedAssessment,
        affectedControls
      );

      // Generate notifications if needed
      if (complianceChange.requiresNotification) {
        await this.sendComplianceNotification(complianceChange);
      }

      // Update compliance dashboard
      await this.updateComplianceDashboard(updatedAssessment);
    }
  }

  /**
   * Generate OSCAL Plan of Action and Milestones (POA&M)
   */
  async generateOSCALPOAM(
    assessmentResults: OSCALAssessmentResults,
    projectContext: ProjectContext
  ): Promise<OSCALPlanOfActionAndMilestones> {
    const findings = this.extractFindings(assessmentResults);
    const gaps = await this.identifyComplianceGaps(findings);

    const poamItems: OSCALPOAMItem[] = [];

    for (const gap of gaps) {
      const remediation = await this.generateRemediationPlan(gap);

      poamItems.push({
        uuid: this.generateUUID(),
        title: `Address ${gap.controlId} Implementation Gap`,
        description: gap.description,
        "related-findings": [gap.findingId],
        "related-risks": await this.assessRelatedRisks(gap),
        "remediation-tracking": {
          "tracking-entries": [
            {
              uuid: this.generateUUID(),
              "date-time-stamp": new Date().toISOString(),
              title: "Initial Gap Identification",
              description: "Gap identified through automated assessment",
              type: "vendor-check-in",
              status: {
                state: "open",
                reason: "auto-detected-gap"
              }
            }
          ]
        },
        "milestones": remediation.milestones.map(milestone => ({
          uuid: this.generateUUID(),
          title: milestone.title,
          description: milestone.description,
          "target-date": milestone.targetDate,
          remarks: milestone.notes
        }))
      });
    }

    return {
      "plan-of-action-and-milestones": {
        uuid: this.generateUUID(),
        metadata: {
          title: `Plan of Action and Milestones - ${projectContext.systemName}`,
          "last-modified": new Date().toISOString(),
          version: "1.0.0",
          "oscal-version": "1.1.2"
        },
        "import-ssp": {
          href: `#${assessmentResults["assessment-results"].uuid}`,
          remarks: "POAM based on assessment results"
        },
        "poam-items": poamItems,
        "back-matter": this.generatePOAMBackMatter(gaps)
      }
    };
  }
}