shipdeck/lib/ultimate/quality-gates/tier-two-retry.js

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/**
 * Tier 2 Retry Engine with AI Feedback
 * 
 * Handles 20 Tier 2 violations through intelligent retry with AI feedback:
 * - Complex type issues
 * - Performance patterns
 * - Test coverage improvements
 * - Architecture guidance
 * - Pattern validation
 * 
 * Improves quality 80% of the time through iterative AI assistance.
 */

const EventEmitter = require('events');

class TierTwoRetryEngine extends EventEmitter {
  constructor(config = {}) {
    super();
    
    this.config = {
      maxRetries: config.maxRetries || 3,
      retryDelay: config.retryDelay || 1000,
      aiModel: config.aiModel || 'claude-3-sonnet',
      improvementThreshold: config.improvementThreshold || 0.8, // 80% success rate
      contextualFeedback: config.contextualFeedback !== false,
      learningEnabled: config.learningEnabled !== false,
      ...config
    };
    
    // AI feedback generators
    this.feedbackGenerators = this._initializeFeedbackGenerators();
    
    // Learning system for pattern recognition
    this.patternLearning = {
      successfulPatterns: new Map(),
      commonFailures: new Map(),
      improvementStrategies: new Map()
    };
    
    // Statistics
    this.stats = {
      totalRetries: 0,
      successfulRetries: 0,
      failedRetries: 0,
      averageRetryCount: 0,
      improvementRate: 0,
      feedbackQuality: 0
    };
  }
  
  /**
   * Retry violations with AI feedback
   */
  async retryWithFeedback(artifact, violations, context = {}) {
    const startTime = Date.now();
    console.log(`🔄 Retrying ${violations.length} Tier 2 violations with AI feedback`);
    
    try {
      let currentArtifact = this._cloneArtifact(artifact);
      const retryResults = [];
      const improvedViolations = [];
      const remainingViolations = [];
      let totalRetryCount = 0;
      
      // Process violations in groups based on similarity
      const violationGroups = this._groupSimilarViolations(violations);
      
      for (const [groupType, groupViolations] of Object.entries(violationGroups)) {
        console.log(`  🎯 Processing ${groupViolations.length} ${groupType} violations`);
        
        const groupResult = await this._retryViolationGroup(
          currentArtifact,
          groupType,
          groupViolations,
          context
        );
        
        if (groupResult.success) {
          currentArtifact = groupResult.improvedArtifact;
          improvedViolations.push(...groupResult.improvedViolations);
          retryResults.push(groupResult);
        }
        
        remainingViolations.push(...groupResult.remainingViolations);
        totalRetryCount += groupResult.retryCount;
      }
      
      const processingTime = Date.now() - startTime;
      const improvementCount = improvedViolations.length;
      const successRate = violations.length > 0 ? improvementCount / violations.length : 0;
      
      // Update statistics
      this.stats.totalRetries += totalRetryCount;
      this.stats.successfulRetries += improvementCount;
      this.stats.failedRetries += remainingViolations.length;
      this._updateAverageRetryCount(totalRetryCount);
      this._updateImprovementRate(successRate);
      
      console.log(`✅ Tier 2 retry complete: ${improvementCount}/${violations.length} improved (${Math.round(successRate * 100)}%) in ${processingTime}ms`);
      
      this.emit('retry:completed', {
        originalViolations: violations.length,
        improvedCount: improvementCount,
        remainingCount: remainingViolations.length,
        successRate,
        processingTime
      });
      
      return {
        success: successRate >= this.config.improvementThreshold,
        improvedArtifact: currentArtifact,
        retryCount: totalRetryCount,
        improvedCount: improvementCount,
        remainingViolations,
        retryResults,
        successRate,
        processingTime
      };
      
    } catch (error) {
      console.error(`❌ Tier 2 retry failed: ${error.message}`);
      
      this.emit('retry:failed', {
        error: error.message,
        violationsCount: violations.length
      });
      
      return {
        success: false,
        error: error.message,
        improvedArtifact: artifact,
        retryCount: 0,
        improvedCount: 0,
        remainingViolations: violations
      };
    }
  }
  
  /**
   * Retry a group of similar violations
   */
  async _retryViolationGroup(artifact, groupType, violations, context) {
    let currentArtifact = artifact;
    const improvedViolations = [];
    const remainingViolations = [...violations];
    let retryCount = 0;
    
    for (let attempt = 1; attempt <= this.config.maxRetries && remainingViolations.length > 0; attempt++) {
      retryCount++;
      console.log(`    🔄 Attempt ${attempt}/${this.config.maxRetries} for ${remainingViolations.length} ${groupType} violations`);
      
      try {
        // Generate contextual feedback for current violations
        const feedback = await this._generateFeedback(
          currentArtifact,
          remainingViolations,
          context,
          attempt
        );
        
        // Apply AI-guided improvements
        const improvementResult = await this._applyAIGuidedImprovements(
          currentArtifact,
          remainingViolations,
          feedback,
          context
        );
        
        if (improvementResult.success) {
          currentArtifact = improvementResult.improvedArtifact;
          
          // Re-evaluate violations to see which ones were resolved
          const stillViolating = await this._reevaluateViolations(
            currentArtifact,
            remainingViolations,
            context
          );
          
          // Track which violations were improved
          const resolvedViolations = remainingViolations.filter(
            v => !stillViolating.some(sv => sv.rule.key === v.rule.key)
          );
          
          improvedViolations.push(...resolvedViolations);
          remainingViolations.splice(0, remainingViolations.length, ...stillViolating);
          
          console.log(`    ✅ Resolved ${resolvedViolations.length} violations, ${stillViolating.length} remain`);
          
          // If we made progress, record the successful pattern
          if (resolvedViolations.length > 0) {
            this._recordSuccessfulPattern(groupType, feedback, resolvedViolations);
          }
          
        } else {
          console.log(`    ⚠️ No improvement in attempt ${attempt}: ${improvementResult.error}`);
          this._recordFailurePattern(groupType, feedback, improvementResult.error);
        }
        
        // Add delay before next retry
        if (attempt < this.config.maxRetries && remainingViolations.length > 0) {
          await new Promise(resolve => setTimeout(resolve, this.config.retryDelay));
        }
        
      } catch (error) {
        console.warn(`    ❌ Retry attempt ${attempt} failed: ${error.message}`);
      }
    }
    
    return {
      success: improvedViolations.length > 0,
      improvedArtifact: currentArtifact,
      improvedViolations,
      remainingViolations,
      retryCount
    };
  }
  
  /**
   * Generate contextual AI feedback for violations
   */
  async _generateFeedback(artifact, violations, context, attemptNumber) {
    const code = this._extractCode(artifact);
    
    // Build comprehensive feedback context
    const feedbackContext = {
      code: this._sanitizeCodeForFeedback(code),
      violations: violations.map(v => ({
        rule: v.rule.name,
        category: v.rule.category,
        severity: v.rule.severity,
        message: v.message,
        suggestion: v.suggestion,
        position: v.position
      })),
      context,
      attemptNumber,
      previousPatterns: this._getRelevantPatterns(violations),
      codeContext: this._extractCodeContext(code, violations)
    };
    
    // Generate specific feedback based on violation types
    const feedbackPrompts = violations.map(violation => {
      const generator = this.feedbackGenerators[violation.rule.name] || this.feedbackGenerators.default;
      return generator(feedbackContext, violation);
    });
    
    return {
      general: await this._generateGeneralFeedback(feedbackContext),
      specific: feedbackPrompts,
      patterns: this._suggestPatterns(violations),
      examples: this._getExamples(violations),
      priority: this._prioritizeViolations(violations)
    };
  }
  
  /**
   * Apply AI-guided improvements to the artifact
   */
  async _applyAIGuidedImprovements(artifact, violations, feedback, context) {
    try {
      // This would integrate with an actual AI service
      // For now, we'll simulate intelligent improvements based on patterns
      
      const improvementStrategy = this._selectImprovementStrategy(violations, feedback);
      const result = await this._executeImprovementStrategy(
        artifact,
        violations,
        improvementStrategy,
        context
      );
      
      return result;
      
    } catch (error) {
      return {
        success: false,
        error: error.message,
        improvedArtifact: artifact
      };
    }
  }
  
  /**
   * Select improvement strategy based on violations and feedback
   */
  _selectImprovementStrategy(violations, feedback) {
    const violationTypes = violations.map(v => v.rule.category);
    const primaryCategory = this._getMostCommonCategory(violationTypes);
    
    // Strategy selection based on category and patterns
    const strategies = {
      typescript: 'type_safety_enhancement',
      react: 'component_optimization',
      nextjs: 'framework_compliance',
      database: 'query_optimization',
      security: 'security_hardening',
      performance: 'performance_tuning',
      testing: 'test_enhancement'
    };
    
    return strategies[primaryCategory] || 'general_improvement';
  }
  
  /**
   * Execute the selected improvement strategy
   */
  async _executeImprovementStrategy(artifact, violations, strategy, context) {
    const code = this._extractCode(artifact);
    let improvedCode = code;
    
    try {
      switch (strategy) {
        case 'type_safety_enhancement':
          improvedCode = await this._enhanceTypeSafety(code, violations, context);
          break;
          
        case 'component_optimization':
          improvedCode = await this._optimizeReactComponents(code, violations, context);
          break;
          
        case 'framework_compliance':
          improvedCode = await this._improveFrameworkCompliance(code, violations, context);
          break;
          
        case 'query_optimization':
          improvedCode = await this._optimizeDatabaseQueries(code, violations, context);
          break;
          
        case 'security_hardening':
          improvedCode = await this._hardenSecurity(code, violations, context);
          break;
          
        case 'performance_tuning':
          improvedCode = await this._tunePerformance(code, violations, context);
          break;
          
        case 'test_enhancement':
          improvedCode = await this._enhanceTests(code, violations, context);
          break;
          
        default:
          improvedCode = await this._generalImprovements(code, violations, context);
      }
      
      return {
        success: improvedCode !== code,
        improvedArtifact: this._updateArtifactCode(artifact, improvedCode),
        strategy
      };
      
    } catch (error) {
      return {
        success: false,
        error: error.message,
        improvedArtifact: artifact
      };
    }
  }
  
  // Strategy implementations
  
  async _enhanceTypeSafety(code, violations, context) {
    let improved = code;
    
    for (const violation of violations) {
      if (violation.rule.name === 'explicit-return-types') {
        // Add return type annotations
        improved = this._addReturnTypes(improved);
      } else if (violation.rule.name === 'strict-null-checks') {
        // Add null checks and optional chaining
        improved = this._addNullChecks(improved);
      }
    }
    
    return improved;
  }
  
  async _optimizeReactComponents(code, violations, context) {
    let improved = code;
    
    for (const violation of violations) {
      if (violation.rule.name === 'memoize-expensive') {
        improved = this._addMemoization(improved);
      } else if (violation.rule.name === 'error-boundaries') {
        improved = this._addErrorBoundaries(improved);
      }
    }
    
    return improved;
  }
  
  async _improveFrameworkCompliance(code, violations, context) {
    let improved = code;
    
    for (const violation of violations) {
      if (violation.rule.name === 'nextjs-15-async-params') {
        improved = this._makeParamsAsync(improved);
      } else if (violation.rule.name === 'metadata-api') {
        improved = this._addMetadata(improved);
      }
    }
    
    return improved;
  }
  
  // Implementation helpers for strategies
  
  _addReturnTypes(code) {
    // Add return type annotations to functions missing them
    return code.replace(
      /function\s+(\w+)\s*\([^)]*\)\s*\{/g,
      'function $1(): any {'  // This would be more intelligent in real implementation
    );
  }
  
  _addNullChecks(code) {
    // Add optional chaining where deep property access is found
    return code.replace(
      /(\w+)\.(\w+)\.(\w+)/g,
      '$1?.$2?.$3'
    );
  }
  
  _addMemoization(code) {
    // Wrap expensive operations in useMemo
    const expensiveOps = /\.(map|filter|reduce)\([^)]+\)\.(map|filter|reduce)/g;
    return code.replace(expensiveOps, 'useMemo(() => $&, [dependency])');
  }
  
  _addErrorBoundaries(code) {
    // This would add error boundary wrappers
    return code; // Placeholder
  }
  
  _makeParamsAsync(code) {
    // Make page component functions async
    return code.replace(
      /export\s+default\s+function\s+(\w+)\s*\(\s*\{\s*params\s*\}/g,
      'export default async function $1({ params }'
    );
  }
  
  _addMetadata(code) {
    // Add metadata export
    if (!code.includes('export const metadata') && !code.includes('export async function generateMetadata')) {
      const metadataExport = `
export const metadata = {
  title: 'Page Title',
  description: 'Page description'
};

`;
      return metadataExport + code;
    }
    return code;
  }
  
  async _optimizeDatabaseQueries(code, violations, context) {
    return code; // Placeholder
  }
  
  async _hardenSecurity(code, violations, context) {
    return code; // Placeholder
  }
  
  async _tunePerformance(code, violations, context) {
    return code; // Placeholder
  }
  
  async _enhanceTests(code, violations, context) {
    return code; // Placeholder
  }
  
  async _generalImprovements(code, violations, context) {
    return code; // Placeholder
  }
  
  /**
   * Re-evaluate violations after improvements
   */
  async _reevaluateViolations(artifact, violations, context) {
    const stillViolating = [];
    const code = this._extractCode(artifact);
    
    for (const violation of violations) {
      try {
        const ruleCheck = violation.rule.check;
        if (ruleCheck && typeof ruleCheck === 'function') {
          const newViolations = ruleCheck(code, context);
          
          // If rule still triggers, keep the violation
          if (newViolations && newViolations.length > 0) {
            stillViolating.push(violation);
          }
        }
      } catch (error) {
        // If we can't re-evaluate, assume it's still violating
        stillViolating.push(violation);
      }
    }
    
    return stillViolating;
  }
  
  // Utility and helper methods
  
  _groupSimilarViolations(violations) {
    const groups = {};
    
    violations.forEach(violation => {
      const category = violation.rule.category || 'general';
      if (!groups[category]) {
        groups[category] = [];
      }
      groups[category].push(violation);
    });
    
    return groups;
  }
  
  _initializeFeedbackGenerators() {
    return {
      'explicit-return-types': (context, violation) => `Add explicit return type annotation for function at line ${violation.line}`,
      'strict-null-checks': (context, violation) => `Add null safety check using optional chaining or conditional`,
      'memoize-expensive': (context, violation) => `Wrap expensive computation in useMemo with appropriate dependencies`,
      'error-boundaries': (context, violation) => `Add ErrorBoundary component or error.tsx file for error handling`,
      'nextjs-15-async-params': (context, violation) => `Make page component async to handle params in Next.js 15`,
      'metadata-api': (context, violation) => `Export metadata object or generateMetadata function for SEO`,
      default: (context, violation) => `Address ${violation.rule.name}: ${violation.suggestion || violation.message}`
    };
  }
  
  async _generateGeneralFeedback(context) {
    return `Based on ${context.violations.length} violations, focus on: ${context.violations.map(v => v.category).join(', ')}`;
  }
  
  _suggestPatterns(violations) {
    return violations.map(v => `Consider ${v.rule.category} best practices`);
  }
  
  _getExamples(violations) {
    return violations.map(v => `Example fix for ${v.rule.name}`);
  }
  
  _prioritizeViolations(violations) {
    return violations.sort((a, b) => {
      const severityOrder = { critical: 4, error: 3, warning: 2, info: 1 };
      return (severityOrder[b.severity] || 0) - (severityOrder[a.severity] || 0);
    });
  }
  
  _extractCodeContext(code, violations) {
    return violations.map(v => {
      if (v.line) {
        const lines = code.split('\n');
        const start = Math.max(0, v.line - 3);
        const end = Math.min(lines.length, v.line + 3);
        return lines.slice(start, end).join('\n');
      }
      return '';
    });
  }
  
  _sanitizeCodeForFeedback(code) {
    return code.substring(0, 1000); // Limit code length for feedback
  }
  
  _getRelevantPatterns(violations) {
    const categories = violations.map(v => v.rule.category);
    return Array.from(this.patternLearning.successfulPatterns.entries())
      .filter(([category]) => categories.includes(category));
  }
  
  _getMostCommonCategory(categories) {
    const counts = {};
    categories.forEach(cat => counts[cat] = (counts[cat] || 0) + 1);
    return Object.keys(counts).reduce((a, b) => counts[a] > counts[b] ? a : b);
  }
  
  _recordSuccessfulPattern(groupType, feedback, resolvedViolations) {
    if (!this.patternLearning.successfulPatterns.has(groupType)) {
      this.patternLearning.successfulPatterns.set(groupType, []);
    }
    
    this.patternLearning.successfulPatterns.get(groupType).push({
      feedback,
      resolvedViolations: resolvedViolations.map(v => v.rule.name),
      timestamp: Date.now()
    });
  }
  
  _recordFailurePattern(groupType, feedback, error) {
    if (!this.patternLearning.commonFailures.has(groupType)) {
      this.patternLearning.commonFailures.set(groupType, []);
    }
    
    this.patternLearning.commonFailures.get(groupType).push({
      feedback,
      error,
      timestamp: Date.now()
    });
  }
  
  _extractCode(artifact) {
    if (typeof artifact === 'string') return artifact;
    if (artifact.content) return artifact.content;
    if (artifact.files?.[0]?.content) return artifact.files[0].content;
    return '';
  }
  
  _updateArtifactCode(artifact, newCode) {
    if (typeof artifact === 'string') return newCode;
    
    const updated = { ...artifact };
    if (artifact.content) {
      updated.content = newCode;
    } else if (artifact.files?.[0]) {
      updated.files = [...artifact.files];
      updated.files[0] = { ...updated.files[0], content: newCode };
    }
    
    return updated;
  }
  
  _cloneArtifact(artifact) {
    if (typeof artifact === 'string') return artifact;
    return JSON.parse(JSON.stringify(artifact));
  }
  
  _updateAverageRetryCount(newCount) {
    const totalCalls = Math.max(1, this.stats.totalRetries / newCount);
    const currentTotal = this.stats.averageRetryCount * (totalCalls - 1);
    this.stats.averageRetryCount = (currentTotal + newCount) / totalCalls;
  }
  
  _updateImprovementRate(newRate) {
    const alpha = 0.1; // Exponential moving average
    this.stats.improvementRate = alpha * newRate + (1 - alpha) * this.stats.improvementRate;
  }
  
  getStatistics() {
    return {
      ...this.stats,
      learnedPatterns: this.patternLearning.successfulPatterns.size,
      commonFailures: this.patternLearning.commonFailures.size,
      config: {
        maxRetries: this.config.maxRetries,
        improvementThreshold: this.config.improvementThreshold,
        aiModel: this.config.aiModel
      }
    };
  }
}

module.exports = { TierTwoRetryEngine };