import { Octokit } from 'octokit';
import { ComplianceReport, Violation } from '../types';

export class GitHubNotifier {
  private octokit: Octokit;

  constructor(
    private token: string,
    private repo: string,
    private labels: string[]
  ) {
    this.octokit = new Octokit({ auth: token });
  }

  async createIssues(report: ComplianceReport): Promise<void> {
    const [owner, repoName] = this.repo.split('/');

    // Group violations by type and severity
    const criticalViolations = report.violations.filter(v => v.severity === 'critical');
    
    if (criticalViolations.length > 0) {
      await this.createIssue(owner, repoName, report, criticalViolations);
    }
  }

  private async createIssue(
    owner: string,
    repo: string,
    report: ComplianceReport,
    violations: Violation[]
  ): Promise<void> {
    const title = `[Design Compliance] ${violations.length} violations in ${report.fileName}`;
    
    let body = `## 🚨 Design Compliance Violations\n\n`;
    body += `**File:** ${report.fileName}\n`;
    body += `**Date:** ${new Date(report.timestamp).toLocaleString()}\n`;
    body += `**Total Violations:** ${violations.length}\n\n`;
    body += `### Violations\n\n`;

    for (const v of violations) {
      body += `#### ${this.getSeverityEmoji(v.severity)} ${v.type.toUpperCase()}\n\n`;
      body += `**Message:** ${v.message}\n`;
      body += `**Node:** ${v.node.name} (${v.node.type})\n`;
      if (v.frame) body += `**Frame:** ${v.frame}\n`;
      if (v.page) body += `**Page:** ${v.page}\n`;
      if (v.expected) body += `**Expected:** \`${JSON.stringify(v.expected)}\`\n`;
      if (v.actual !== undefined) body += `**Actual:** \`${JSON.stringify(v.actual)}\`\n`;
      body += `\n`;
    }

    body += `\n---\n`;
    body += `_This issue was automatically created by Design Compliance Bot_`;

    try {
      await this.octokit.rest.issues.create({
        owner,
        repo,
        title,
        body,
        labels: this.labels,
      });
    } catch (error) {
      console.error('Failed to create GitHub issue:', error);
    }
  }

  private getSeverityEmoji(severity: string): string {
    switch (severity) {
      case 'critical': return '🔴';
      case 'warning': return '🟡';
      case 'info': return '🔵';
      default: return '⚪';
    }
  }
}