# Context-aware review prompt for Claude 4.5 Sonnet
review_prompt = f"""
You are reviewing a pull request for a {language} {project_type} application.
**Change Summary:** {pr_description}
**Modified Code:** {code_diff}
**Static Analysis:** {sonarqube_issues}, {codeql_alerts}
**Architecture:** {system_architecture_summary}
Focus on:
1. Security vulnerabilities missed by static tools
2. Performance implications at scale
3. Edge cases and error handling gaps
4. API contract compatibility
5. Testability and missing coverage
6. Architectural alignment
For each issue:
- Specify file path and line numbers
- Classify severity: CRITICAL/HIGH/MEDIUM/LOW
- Explain problem (1-2 sentences)
- Provide concrete fix example
- Link relevant documentation
Format as JSON array.
"""

interface ReviewRoutingStrategy {
  async routeReview(pr: PullRequest): Promise<ReviewEngine> {
    const metrics = await this.analyzePRComplexity(pr);
    if (metrics.filesChanged > 50 || metrics.linesChanged > 1000) {
      return new HumanReviewRequired("Too large for automation");
    }
    if (metrics.securitySensitive || metrics.affectsAuth) {
      return new AIEngine("claude-3.7-sonnet", {
        temperature: 0.1,
        maxTokens: 4000,
        systemPrompt: SECURITY_FOCUSED_PROMPT
      });
    }
    if (metrics.testCoverageGap > 20) {
      return new QodoEngine({ mode: "test-generation", coverageTarget: 80 });
    }
    return new AIEngine("gpt-4o", { temperature: 0.3, maxTokens: 2000 });
  }
}

type MicroserviceReviewChecklist struct {
    CheckServiceCohesion       bool  // Single capability per service?
    CheckDataOwnership         bool  // Each service owns database?
    CheckAPIVersioning         bool  // Semantic versioning?
    CheckBackwardCompatibility bool  // Breaking changes flagged?
    CheckCircuitBreakers       bool  // Resilience patterns?
    CheckIdempotency           bool  // Duplicate event handling?
}
 
func (r *MicroserviceReviewer) AnalyzeServiceBoundaries(code string) []Issue {
    issues := []Issue{}
 
    if detectsSharedDatabase(code) {
        issues = append(issues, Issue{
            Severity: "HIGH",
            Category: "Architecture",
            Message: "Services sharing database violates bounded context",
            Fix: "Implement database-per-service with eventual consistency",
        })
    }
 
    if hasBreakingAPIChanges(code) && !hasDeprecationWarnings(code) {
        issues = append(issues, Issue{
            Severity: "CRITICAL",
            Category: "API Design",
            Message: "Breaking change without deprecation period",
            Fix: "Maintain backward compatibility via versioning (v1, v2)",
        })
    }
 
    return issues
}

security_analysis_prompt = """
Analyze authentication code for vulnerabilities:
{code_snippet}
Check for:
1. Authentication bypass, broken access control (IDOR)
2. JWT token validation flaws
3. Session fixation/hijacking, timing attacks
4. Missing rate limiting, insecure password storage
5. Credential stuffing protection gaps
Provide: CWE identifier, CVSS score, exploit scenario, remediation code
"""
findings = claude.analyze(security_analysis_prompt, temperature=0.1)

trufflehog git file://. --json | \
  jq '.[] | select(.Verified == true) | {
    secret_type: .DetectorName,
    file: .SourceMetadata.Data.Filename,
    severity: "CRITICAL"
  }'

class PerformanceReviewAgent {
  async analyzePRPerformance(prNumber) {
    const baseline = await this.loadBaselineMetrics('main');
    const prBranch = await this.runBenchmarks(`pr-${prNumber}`);
    const regressions = this.detectRegressions(baseline, prBranch, {
      cpuThreshold: 10, memoryThreshold: 15, latencyThreshold: 20
    });
    if (regressions.length > 0) {
      await this.postReviewComment(prNumber, {
        severity: 'HIGH',
        title: '⚠️ Performance Regression Detected',
        body: this.formatRegressionReport(regressions),
        suggestions: await this.aiGenerateOptimizations(regressions)
      });
    }
  }
}

def detect_n_plus_1_queries(code_ast):
    issues = []
    for loop in find_loops(code_ast):
        db_calls = find_database_calls_in_scope(loop.body)
        if len(db_calls) > 0:
            issues.append({
                'severity': 'HIGH',
                'line': loop.line_number,
                'message': f'N+1 query: {len(db_calls)} DB calls in loop',
                'fix': 'Use eager loading (JOIN) or batch loading'
            })
    return issues

interface ReviewComment {
  path: string; line: number;
  severity: 'CRITICAL' | 'HIGH' | 'MEDIUM' | 'LOW' | 'INFO';
  category: 'Security' | 'Performance' | 'Bug' | 'Maintainability';
  title: string; description: string;
  codeExample?: string; references?: string[];
  autoFixable: boolean; cwe?: string; cvss?: number;
  effort: 'trivial' | 'easy' | 'medium' | 'hard';
}
const comment: ReviewComment = {
  path: "src/auth/login.ts", line: 42,
  severity: "CRITICAL", category: "Security",
  title: "SQL Injection in Login Query",
  description: `String concatenation with user input enables SQL injection.
**Attack Vector:** Input 'admin' OR '1'='1' bypasses authentication.
**Impact:** Complete auth bypass, unauthorized access.`,
  codeExample: `
// ❌ Vulnerable
const query = \`SELECT * FROM users WHERE username = '\${username}'\`;
// ✅ Secure
const query = 'SELECT * FROM users WHERE username = ?';
const result = await db.execute(query, [username]);
  `,
  references: ["https://cwe.mitre.org/data/definitions/89.html"],
  autoFixable: false, cwe: "CWE-89", cvss: 9.8, effort: "easy"
};

name: AI Code Review
on:
  pull_request:
    types: [opened, synchronize, reopened]
 
jobs:
  ai-review:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
 
      - name: Static Analysis
        run: |
          sonar-scanner -Dsonar.pullrequest.key=${{ github.event.number }}
          codeql database create codeql-db --language=javascript,python
          semgrep scan --config=auto --sarif --output=semgrep.sarif
 
      - name: AI-Enhanced Review (GPT-5)
        env:
          OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
        run: |
          python scripts/ai_review.py \
            --pr-number ${{ github.event.number }} \
            --model gpt-4o \
            --static-analysis-results codeql.sarif,semgrep.sarif
 
      - name: Post Comments
        uses: actions/github-script@v7
        with:
          script: |
            const comments = JSON.parse(fs.readFileSync('review-comments.json'));
            for (const comment of comments) {
              await github.rest.pulls.createReviewComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                pull_number: context.issue.number,
                body: comment.body, path: comment.path, line: comment.line
              });
            }
 
      - name: Quality Gate
        run: |
          CRITICAL=$(jq '[.[] | select(.severity == "CRITICAL")] | length' review-comments.json)
          if [ $CRITICAL -gt 0 ]; then
            echo "❌ Found $CRITICAL critical issues"
            exit 1
          fi

#!/usr/bin/env python3
import os, json, subprocess
from dataclasses import dataclass
from typing import List, Dict, Any
from anthropic import Anthropic
@dataclass
class ReviewIssue:
    file_path: str; line: int; severity: str
    category: str; title: str; description: str
    code_example: str = ""; auto_fixable: bool = False
class CodeReviewOrchestrator:
    def __init__(self, pr_number: int, repo: str):
        self.pr_number = pr_number; self.repo = repo
        self.github_token = os.environ['GITHUB_TOKEN']
        self.anthropic_client = Anthropic(api_key=os.environ['ANTHROPIC_API_KEY'])
        self.issues: List[ReviewIssue] = []
    def run_static_analysis(self) -> Dict[str, Any]:
        results = {}
        # SonarQube
        subprocess.run(['sonar-scanner', f'-Dsonar.projectKey={self.repo}'], check=True)
        # Semgrep
        semgrep_output = subprocess.check_output(['semgrep', 'scan', '--config=auto', '--json'])
        results['semgrep'] = json.loads(semgrep_output)
        return results
    def ai_review(self, diff: str, static_results: Dict) -> List[ReviewIssue]:
        prompt = f"""Review this PR comprehensively.
**Diff:** {diff[:15000]}
**Static Analysis:** {json.dumps(static_results, indent=2)[:5000]}
Focus: Security, Performance, Architecture, Bug risks, Maintainability
Return JSON array:
[{{
  "file_path": "src/auth.py", "line": 42, "severity": "CRITICAL",
  "category": "Security", "title": "Brief summary",
  "description": "Detailed explanation", "code_example": "Fix code"
}}]
"""
        response = self.anthropic_client.messages.create(
            model="claude-sonnet-4-6",
            max_tokens=8000, temperature=0.2,
            messages=[{"role": "user", "content": prompt}]
        )
        content = response.content[0].text
        if '```json' in content:
            content = content.split('```json')[1].split('```')[0]
        return [ReviewIssue(**issue) for issue in json.loads(content.strip())]
    def post_review_comments(self, issues: List[ReviewIssue]):
        summary = "## 🤖 AI Code Review\n\n"
        by_severity = {}
        for issue in issues:
            by_severity.setdefault(issue.severity, []).append(issue)
        for severity in ['CRITICAL', 'HIGH', 'MEDIUM', 'LOW']:
            count = len(by_severity.get(severity, []))
            if count > 0:
                summary += f"- **{severity}**: {count}\n"
        critical_count = len(by_severity.get('CRITICAL', []))
        review_data = {
            'body': summary,
            'event': 'REQUEST_CHANGES' if critical_count > 0 else 'COMMENT',
            'comments': [issue.to_github_comment() for issue in issues]
        }
        # Post to GitHub API
        print(f"✅ Posted review with {len(issues)} comments")
if __name__ == '__main__':
    import argparse
    parser = argparse.ArgumentParser()
    parser.add_argument('--pr-number', type=int, required=True)
    parser.add_argument('--repo', required=True)
    args = parser.parse_args()
    reviewer = CodeReviewOrchestrator(args.pr_number, args.repo)
    static_results = reviewer.run_static_analysis()
    diff = reviewer.get_pr_diff()
    ai_issues = reviewer.ai_review(diff, static_results)
    reviewer.post_review_comments(ai_issues)