#!/usr/bin/env node
// ═══════════════════════════════════════════════════════════════════════════
// EOS Integration — Gör EOS obligatoriskt i agent-flödet
// ═══════════════════════════════════════════════════════════════════════════

import { readFileSync } from 'fs';

/**
 * EOS Integration säkerställer att:
 * 1. Ingen agent kan hoppa över EOS-policyer
 * 2. Varje förändring loggas
 * 3. Blockeringar är tydliga och motiverade
 * 4. Undantag kräver mänsklig granskning
 */

class EOSIntegration {
  constructor() {
    this.violations = [];
    this.exemptions = [];
  }

  /**
   * Kör EOS-policyer för en förändring
   */
  async check(change) {
    const checks = [
      this.checkNoHardcodedSecrets(change),
      this.checkNoDirectProd(change),
      this.checkTestsRequired(change),
      this.checkGitRequired(change),
      this.checkNoUncommittedChanges(change),
      this.checkIaCRequired(change)
    ];

    const results = await Promise.all(checks);
    const failed = results.filter(r => !r.passed);

    if (failed.length > 0) {
      return {
        passed: false,
        blocked: true,
        reason: 'EOS Policy Check failed',
        failures: failed,
        action: 'Fix failures or request exemption'
      };
    }

    return {
      passed: true,
      blocked: false,
      reason: 'All checks passed',
      results
    };
  }

  async checkNoHardcodedSecrets(change) {
    const secrets = this.findSecrets(change);
    
    return {
      rule: 'no-hardcoded-secrets',
      passed: secrets.length === 0,
      evidence: secrets.length > 0 
        ? `Found secrets: ${secrets.join(', ')}`
        : 'No secrets found',
      severity: 'CRITICAL'
    };
  }

  async checkNoDirectProd(change) {
    const isProd = change.target?.includes('production');
    const hasPipeline = change.pipeline !== undefined;
    
    return {
      rule: 'no-direct-prod',
      passed: !isProd || hasPipeline,
      evidence: isProd && !hasPipeline
        ? 'Production change without pipeline'
        : 'OK',
      severity: 'HIGH'
    };
  }

  async checkTestsRequired(change) {
    const hasTests = change.tests?.length > 0;
    const isConfig = change.type === 'config';
    
    return {
      rule: 'test-required',
      passed: hasTests || isConfig,
      evidence: !hasTests && !isConfig
        ? 'No tests for code change'
        : 'OK',
      severity: 'MEDIUM'
    };
  }

  async checkGitRequired(change) {
    const hasGit = change.git?.commit !== undefined;
    
    return {
      rule: 'git-required',
      passed: hasGit,
      evidence: !hasGit
        ? 'No git commit'
        : 'OK',
      severity: 'HIGH'
    };
  }

  async checkNoUncommittedChanges(change) {
    // TODO: Kolla git status
    return {
      rule: 'no-uncommitted-changes',
      passed: true, // TODO: Verklig kontroll
      evidence: 'TODO',
      severity: 'MEDIUM'
    };
  }

  async checkIaCRequired(change) {
    const isInfrastructure = change.type === 'infrastructure';
    const hasTerraform = change.terraform !== undefined;
    
    return {
      rule: 'iac-required',
      passed: !isInfrastructure || hasTerraform,
      evidence: isInfrastructure && !hasTerraform
        ? 'Infrastructure change without Terraform'
        : 'OK',
      severity: 'HIGH'
    };
  }

  findSecrets(change) {
    const secrets = [];
    const patterns = [
      /password\s*=\s*["'][^"']+["']/i,
      /secret\s*=\s*["'][^"']+["']/i,
      /token\s*=\s*["'][^"']+["']/i,
      /api_key\s*=\s*["'][^"']+["']/i,
      /JWT_SECRET\s*=\s*["'][^"']+["']/i
    ];

    for (const file of change.files || []) {
      for (const pattern of patterns) {
        if (pattern.test(file.content)) {
          secrets.push(file.path);
          break;
        }
      }
    }

    return [...new Set(secrets)];
  }

  /**
   * Begär undantag från EOS-regel
   */
  requestExemption(rule, reason, requester) {
    const exemption = {
      id: `exemption-${Date.now()}`,
      rule,
      reason,
      requester,
      requestedAt: new Date().toISOString(),
      status: 'pending',
      approvedBy: null,
      approvedAt: null
    };

    this.exemptions.push(exemption);
    return exemption;
  }

  /**
   * Godkänn undantag
   */
  approveExemption(exemptionId, approver) {
    const exemption = this.exemptions.find(e => e.id === exemptionId);
    if (exemption) {
      exemption.status = 'approved';
      exemption.approvedBy = approver;
      exemption.approvedAt = new Date().toISOString();
    }
    return exemption;
  }
}

// CLI
if (process.argv[1] === new URL(import.meta.url).pathname) {
  const eos = new EOSIntegration();
  
  // Testa med en förändring
  eos.check({
    id: 'test-change',
    type: 'code',
    files: [
      { path: 'test.mjs', content: 'const x = 1;' }
    ],
    git: { commit: 'abc123' },
    tests: ['test.mjs']
  }).then(result => {
    console.log(JSON.stringify(result, null, 2));
  });
}

export { EOSIntegration };