// ai-review-bot/src/index.ts
import { App } from '@octokit/app';
import { WebhookEvent } from '@octokit/webhooks-types';
import { ReviewEngine } from './review-engine';
import { SecurityAnalyzer } from './security-analyzer';
import { PerformanceAnalyzer } from './performance-analyzer';
import { BestPracticesChecker } from './best-practices-checker';

export class AIReviewBot {
  private app: App;
  private reviewEngine: ReviewEngine;
  private analyzers: Analyzer[];
  
  constructor(config: BotConfig) {
    this.app = new App({
      appId: config.appId,
      privateKey: config.privateKey,
      webhooks: { secret: config.webhookSecret }
    });
    
    this.reviewEngine = new ReviewEngine(config.aiConfig);
    
    // 各種アナライザーを初期化
    this.analyzers = [
      new SecurityAnalyzer(),
      new PerformanceAnalyzer(),
      new BestPracticesChecker(),
      new AccessibilityChecker(),
      new DocumentationAnalyzer()
    ];
  }
  
  async handlePullRequest(event: WebhookEvent) {
    if (!this.shouldReview(event)) return;
    
    const { pull_request: pr } = event.payload;
    const installation = await this.app.getInstallationOctokit(event.payload.installation.id);
    
    try {
      // PRの変更内容を取得
      const changes = await this.fetchPRChanges(installation, pr);
      
      // 各種分析を並列実行
      const analyses = await Promise.all([
        this.runStaticAnalysis(changes),
        this.runAIAnalysis(changes),
        this.runSecurityAnalysis(changes),
        this.runPerformanceAnalysis(changes),
        this.runCustomAnalyses(changes)
      ]);
      
      // 結果を統合
      const review = await this.consolidateReview(analyses);
      
      // GitHubにレビューを投稿
      await this.postReview(installation, pr, review);
      
      // メトリクスを記録
      await this.recordMetrics(pr, review);
      
    } catch (error) {
      console.error('Review failed:', error);
      await this.handleError(installation, pr, error);
    }
  }
  
  private async runAIAnalysis(changes: PRChanges): Promise {
    const results = {
      codeQuality: [],
      suggestions: [],
      security: [],
      performance: []
    };
    
    for (const file of changes.files) {
      // ファイルタイプに応じた分析
      const analyzer = this.getAnalyzerForFile(file);
      
      // AIによるコードレビュー
      const aiReview = await this.reviewEngine.analyzeFile({
        path: file.filename,
        content: file.content,
        patch: file.patch,
        previousContent: file.previousContent,
        context: {
          language: file.language,
          framework: this.detectFramework(file),
          projectType: this.getProjectType(),
          customRules: this.loadCustomRules()
        }
      });
      
      // 問題の重要度を評価
      const prioritizedIssues = this.prioritizeIssues(aiReview.issues);
      
      results.codeQuality.push(...prioritizedIssues.codeQuality);
      results.suggestions.push(...prioritizedIssues.suggestions);
      results.security.push(...prioritizedIssues.security);
      results.performance.push(...prioritizedIssues.performance);
    }
    
    return results;
  }
  
  private async postReview(
    octokit: any,
    pr: PullRequest,
    review: ConsolidatedReview
  ): Promise {
    // 概要コメントを作成
    const summaryComment = this.generateSummaryComment(review);
    
    // PRレビューを作成
    const reviewResponse = await octokit.pulls.createReview({
      owner: pr.base.repo.owner.login,
      repo: pr.base.repo.name,
      pull_number: pr.number,
      body: summaryComment,
      event: this.determineReviewEvent(review),
      comments: this.generateInlineComments(review)
    });
    
    // 重要な問題がある場合は追加のコメントを投稿
    if (review.criticalIssues.length > 0) {
      await this.postCriticalIssuesComment(octokit, pr, review.criticalIssues);
    }
    
    // 改善提案がある場合はサジェスチョンを投稿
    if (review.suggestions.length > 0) {
      await this.postSuggestions(octokit, pr, review.suggestions);
    }
  }
  
  private generateSummaryComment(review: ConsolidatedReview): string {
    return `## 🤖 AI Code Review Summary

### Overview
${review.summary}

### Metrics
- **Code Quality Score**: ${review.metrics.qualityScore}/100
- **Security Score**: ${review.metrics.securityScore}/100
- **Test Coverage**: ${review.metrics.testCoverage}%
- **Performance Impact**: ${review.metrics.performanceImpact}

### Issues Found
${this.formatIssuesSummary(review)}

### Recommendations
${review.recommendations.map(r => `- ${r}`).join('\n')}

---

Review Details

${this.formatDetailedReview(review)}



---
*This review was automatically generated by AI. Please review the suggestions carefully.*
`;
  }
}