#!/usr/bin/env node
// ═══════════════════════════════════════════════════════════════════════════
// SIL Architecture Policy — Regler som kod
// Erik-krav: "SIL kan kontrollera att arkitekturregler följs"
// ═══════════════════════════════════════════════════════════════════════════

import { readFileSync, existsSync, writeFileSync, appendFileSync } from 'fs';
import { execSync } from 'child_process';

const GRAPH_PATH = '/home/bernt/.openclaw/workspace/SYSTEM_GRAPH.json';
const POLICY_LOG = '/home/bernt/.openclaw/workspace/SIL/policy-violations.jsonl';

/**
 * Arkitekturregler som kod.
 * Varje regel har:
 * - id: unikt nummer
 * - name: beskrivande namn
 * - severity: CRITICAL, HIGH, MEDIUM, LOW
 * - check: funktion som returnerar true om regeln bryts
 * - message: förklaring av överträdelsen
 */
const ARCHITECTURE_RULES = [
  {
    id: 1,
    name: 'UI får aldrig anropa databasen direkt',
    severity: 'CRITICAL',
    category: 'layer_separation',
    check: (graph, files) => {
      // Kontrollera om frontend-filer innehåller databasanrop
      const frontendFiles = files.filter(f =>
        f.match(/\.tsx$|\.jsx$|\.ts$|\.js$/) &&
        (f.includes('frontend') || f.includes('app') || f.includes('ui'))
      );

      for (const file of frontendFiles) {
        try {
          const content = readFileSync(file, 'utf8');
          if (content.match(/import.*pg|import.*mysql|import.*prisma|new Pool\(|createConnection/i)) {
            return { violated: true, file, evidence: 'Direkt databas-import hittad' };
          }
        } catch {}
      }

      return { violated: false };
    },
    message: 'Frontend-kod får inte innehålla direkta databasanrop. Använd API-lager.'
  },
  {
    id: 2,
    name: 'Domänlogik får inte ligga i API-lagret',
    severity: 'HIGH',
    category: 'layer_separation',
    check: (graph, files) => {
      // Kontrollera om API-handlers innehåller affärslogik
      const apiFiles = files.filter(f =>
        f.match(/handler|controller|route/i) &&
        !f.includes('service')
      );

      for (const file of apiFiles) {
        try {
          const content = readFileSync(file, 'utf8');
          // Enkel heuristik: om filen är >100 rader och innehåller affärslogik
          const lines = content.split('\n');
          if (lines.length > 100) {
            const businessLogic = content.match(/if.*balance|if.*amount|calculate|validate.*payment/i);
            if (businessLogic) {
              return { violated: true, file, evidence: 'Affärslogik i API-handler' };
            }
          }
        } catch {}
      }

      return { violated: false };
    },
    message: 'Affärslogik ska ligga i service-lagret, inte i API-handlers.'
  },
  {
    id: 3,
    name: 'Alla externa integrationer ska gå genom adapterlager',
    severity: 'HIGH',
    category: 'integration',
    check: (graph, files) => {
      // Kontrollera om externa anrop görs direkt från service
      const serviceFiles = files.filter(f => f.includes('service'));

      for (const file of serviceFiles) {
        try {
          const content = readFileSync(file, 'utf8');
          // Om filen anropar extern API direkt utan adapter
          const directCall = content.match(/fetch\(.*stripe|fetch\(.*aws|axios\(.*stripe/i);
          const hasAdapter = content.match(/adapter|client|gateway/i);

          if (directCall && !hasAdapter) {
            return { violated: true, file, evidence: 'Direkt extern anrop utan adapter' };
          }
        } catch {}
      }

      return { violated: false };
    },
    message: 'Externa integrationer ska gå genom adapter/client-lager.'
  },
  {
    id: 4,
    name: 'Alla betalningar måste vara idempotenta',
    severity: 'CRITICAL',
    category: 'payment',
    check: (graph, files) => {
      // Kontrollera betalnings-relaterade filer
      const paymentFiles = files.filter(f =>
        f.match(/payment|stripe|wallet|payout/i)
      );

      for (const file of paymentFiles) {
        try {
          const content = readFileSync(file, 'utf8');
          // Ska innehålla idempotens-kontroll
          const hasIdempotency = content.match(/idempot|idempotent|duplicate.*check|already.*processed/i);

          if (!hasIdempotency && content.match(/charge|payment|payout/i)) {
            return { violated: true, file, evidence: 'Betalningsflöde utan idempotens-kontroll' };
          }
        } catch {}
      }

      return { violated: false };
    },
    message: 'Alla betalningsoperationer måste ha idempotens-kontroll.'
  },
  {
    id: 5,
    name: 'Alla KYC-flöden måste loggas',
    severity: 'CRITICAL',
    category: 'compliance',
    check: (graph, files) => {
      // Kontrollera KYC-filer
      const kycFiles = files.filter(f => f.match(/kyc|identity|verify/i));

      for (const file of kycFiles) {
        try {
          const content = readFileSync(file, 'utf8');
          // Ska innehålla loggning
          const hasLogging = content.match(/log\.|logger\.|audit|console\.log/i);

          if (!hasLogging) {
            return { violated: true, file, evidence: 'KYC-flöde utan loggning' };
          }
        } catch {}
      }

      return { violated: false };
    },
    message: 'Alla KYC-operationer måste loggas för compliance.'
  },
  {
    id: 6,
    name: 'Alla nya API:er ska ha integrationstester',
    severity: 'HIGH',
    category: 'testing',
    check: (graph, files) => {
      // Kontrollera om nya endpoints har tester
      const newEndpoints = files.filter(f =>
        f.match(/route|endpoint|handler/i) &&
        !f.match(/\.test\.|\.spec\./i)
      );

      for (const endpoint of newEndpoints) {
        const testFile = endpoint.replace(/\.(ts|js)$/, '.test.$1');
        if (!existsSync(testFile)) {
          return { violated: true, file: endpoint, evidence: 'Saknar integrationstest' };
        }
      }

      return { violated: false };
    },
    message: 'Varje ny endpoint måste ha ett integrationstest.'
  },
  {
    id: 7,
    name: 'Kritiska tjänster ska ha circuit breaker',
    severity: 'HIGH',
    category: 'resilience',
    check: (graph, files) => {
      const criticalServices = ['wallet', 'payment', 'auth', 'kyc'];

      for (const service of criticalServices) {
        const serviceFiles = files.filter(f => f.includes(service));

        for (const file of serviceFiles) {
          try {
            const content = readFileSync(file, 'utf8');
            const hasCircuitBreaker = content.match(/circuit|circuitbreaker|breaker|fallback/i);

            if (!hasCircuitBreaker && content.match(/fetch|axios|request/i)) {
              return { violated: true, file, evidence: 'Kritisk tjänst utan circuit breaker' };
            }
          } catch {}
        }
      }

      return { violated: false };
    },
    message: 'Kritiska tjänster måste ha circuit breaker på externa anrop.'
  },
  {
    id: 8,
    name: 'Ingen hårdkodad konfiguration i källkod',
    severity: 'MEDIUM',
    category: 'configuration',
    check: (graph, files) => {
      const configFiles = files.filter(f =>
        !f.match(/\.env|config|settings|yaml|yml/i)
      );

      for (const file of configFiles) {
        try {
          const content = readFileSync(file, 'utf8');
          // Hitta hårdkodade värden
          const hardcoded = content.match(/api_key.*=.*['"][a-zA-Z0-9]{20,}['"]|password.*=.*['"][^'"]+['"]/i);

          if (hardcoded) {
            return { violated: true, file, evidence: 'Hårdkodad konfiguration hittad' };
          }
        } catch {}
      }

      return { violated: false };
    },
    message: 'Konfiguration ska läsas från miljövariabler eller config-filer.'
  },
  {
    id: 9,
    name: 'Databasändringar ska ha rollback-script',
    severity: 'CRITICAL',
    category: 'database',
    check: (graph, files) => {
      const migrationFiles = files.filter(f => f.match(/migration|\.sql$/i));

      for (const file of migrationFiles) {
        try {
          const content = readFileSync(file, 'utf8');
          // Ska innehålla rollback eller down-migration
          const hasRollback = content.match(/rollback|down|revert|DROP.*IF.*EXISTS/i);

          if (!hasRollback) {
            return { violated: true, file, evidence: 'Migration utan rollback' };
          }
        } catch {}
      }

      return { violated: false };
    },
    message: 'Varje databasändring måste ha ett rollback-script.'
  },
  {
    id: 10,
    name: 'Alla PR:er ska uppdatera dokumentation',
    severity: 'LOW',
    category: 'documentation',
    check: (graph, files) => {
      // Kontrollera om PR innehåller API-ändringar utan doc-uppdatering
      const apiChanges = files.filter(f => f.match(/openapi|swagger|\.yaml$/i));
      const docChanges = files.filter(f => f.match(/README|CHANGELOG|docs/i));

      if (apiChanges.length > 0 && docChanges.length === 0) {
        return {
          violated: true,
          file: apiChanges[0],
          evidence: 'API-ändring utan dokumentationsuppdatering'
        };
      }

      return { violated: false };
    },
    message: 'API-ändringar ska dokumenteras.'
  }
];

class ArchitecturePolicy {
  constructor() {
    this.graph = this.loadGraph();
    this.rules = ARCHITECTURE_RULES;
  }

  loadGraph() {
    try {
      return JSON.parse(readFileSync(GRAPH_PATH, 'utf8'));
    } catch {
      return { nodes: [], edges: [] };
    }
  }

  /**
   * Kontrollera alla regler mot en uppsättning filer
   */
  checkPR(files, prInfo = {}) {
    console.log(`🔍 Kontrollerar ${files.length} filer mot ${this.rules.length} arkitekturregler...\n`);

    const violations = [];
    let criticalCount = 0;
    let highCount = 0;

    for (const rule of this.rules) {
      const result = rule.check(this.graph, files);

      if (result.violated) {
        violations.push({
          ruleId: rule.id,
          ruleName: rule.name,
          severity: rule.severity,
          category: rule.category,
          file: result.file,
          evidence: result.evidence,
          message: rule.message,
          timestamp: new Date().toISOString()
        });

        if (rule.severity === 'CRITICAL') criticalCount++;
        if (rule.severity === 'HIGH') highCount++;

        // Logga överträdelse
        appendFileSync(POLICY_LOG, JSON.stringify({
          ...violations[violations.length - 1],
          pr: prInfo
        }) + '\n', 'utf8');
      }
    }

    const report = {
      timestamp: new Date().toISOString(),
      pr: prInfo,
      summary: {
        totalRules: this.rules.length,
        violations: violations.length,
        critical: criticalCount,
        high: highCount,
        medium: violations.filter(v => v.severity === 'MEDIUM').length,
        low: violations.filter(v => v.severity === 'LOW').length
      },
      violations,
      passed: violations.length === 0,
      // Kan merge blockeras?
      blockMerge: criticalCount > 0,
      requiresReview: highCount > 0
    };

    this.printReport(report);
    return report;
  }

  /**
   * Kontrollera regler för ett repo
   */
  checkRepo(repoPath) {
    // Hämta alla källkodsfiler
    try {
      const files = execSync(
        `find ${repoPath} -type f \( -name "*.ts" -o -name "*.js" -o -name "*.tsx" -o -name "*.jsx" -o -name "*.sql" -o -name "*.yaml" -o -name "*.yml" \) | head -100`,
        { encoding: 'utf8' }
      ).trim().split('\n').filter(f => f);

      return this.checkPR(files, { repo: repoPath, type: 'full_scan' });
    } catch (e) {
      console.error('Fel vid repo-scan:', e.message);
      return { error: e.message };
    }
  }

  printReport(report) {
    console.log('╔═══════════════════════════════════════════════════════════════╗');
    console.log('║           ARKITEKTURPOLICY-KONTROLL                           ║');
    console.log('╚═══════════════════════════════════════════════════════════════╝');
    console.log();

    console.log('📊 SAMMANFATTNING\n');
    console.log(`   Regler kontrollerade: ${report.summary.totalRules}`);
    console.log(`   Överträdelser: ${report.summary.violations}`);
    console.log(`   🔴 Critical: ${report.summary.critical}`);
    console.log(`   🟠 High: ${report.summary.high}`);
    console.log(`   🟡 Medium: ${report.summary.medium}`);
    console.log(`   🟢 Low: ${report.summary.low}`);
    console.log();

    if (report.violations.length > 0) {
      console.log('⚠️  ÖVERTRÄDELSER\n');
      for (const v of report.violations) {
        const icon = v.severity === 'CRITICAL' ? '🔴' :
                    v.severity === 'HIGH' ? '🟠' :
                    v.severity === 'MEDIUM' ? '🟡' : '🟢';
        console.log(`   ${icon} Regel ${v.ruleId}: ${v.ruleName}`);
        console.log(`      Fil: ${v.file}`);
        console.log(`      Bevis: ${v.evidence}`);
        console.log(`      ${v.message}`);
        console.log();
      }
    } else {
      console.log('✅ Inga överträdelser hittade!\n');
    }

    console.log('⚡ BESLUT\n');
    if (report.blockMerge) {
      console.log('   🔴 BLOCKERA MERGE — Kritiska överträdelser måste åtgärdas');
    } else if (report.requiresReview) {
      console.log('   🟠 KRÄV REVIEW — Högprioriterade överträdelser bör granskas');
    } else {
      console.log('   ✅ GODKÄNN — Inga blockerande överträdelser');
    }
    console.log();

    console.log('═══════════════════════════════════════════════════════════════\n');
  }

  /**
   * Lista alla regler
   */
  listRules() {
    console.log('📋 ARKITEKTURREGLER\n');
    for (const rule of this.rules) {
      const icon = rule.severity === 'CRITICAL' ? '🔴' :
                  rule.severity === 'HIGH' ? '🟠' :
                  rule.severity === 'MEDIUM' ? '🟡' : '🟢';
      console.log(`   ${icon} Regel ${rule.id}: ${rule.name}`);
      console.log(`      Kategori: ${rule.category}`);
      console.log(`      Allvarlighet: ${rule.severity}`);
      console.log();
    }
  }

  /**
   * Hämta statistik över överträdelser
   */
  getViolationStats() {
    if (!existsSync(POLICY_LOG)) {
      return { error: 'Inga överträdelser loggade ännu' };
    }

    const violations = readFileSync(POLICY_LOG, 'utf8')
      .split('\n')
      .filter(line => line.trim())
      .map(line => {
        try { return JSON.parse(line); } catch { return null; }
      })
      .filter(Boolean);

    const byRule = {};
    const bySeverity = {};
    const byFile = {};

    for (const v of violations) {
      byRule[v.ruleId] = (byRule[v.ruleId] || 0) + 1;
      bySeverity[v.severity] = (bySeverity[v.severity] || 0) + 1;
      byFile[v.file] = (byFile[v.file] || 0) + 1;
    }

    return {
      total: violations.length,
      byRule: Object.entries(byRule).map(([id, count]) => ({
        ruleId: id,
        ruleName: this.rules.find(r => r.id == id)?.name || 'Unknown',
        count
      })).sort((a, b) => b.count - a.count),
      bySeverity,
      topFiles: Object.entries(byFile)
        .sort((a, b) => b[1] - a[1])
        .slice(0, 10)
        .map(([file, count]) => ({ file, count }))
    };
  }
}

// ── Main ──────────────────────────────────────────────────────────────────

const policy = new ArchitecturePolicy();
const command = process.argv[2] || '--check';

if (command === '--check') {
  const repoPath = process.argv[3] || '/home/bernt/repos/quixzoom.com';
  policy.checkRepo(repoPath);
} else if (command === '--pr') {
  // Simulera PR-kontroll med filer
  const files = process.argv.slice(3);
  if (files.length === 0) {
    console.log('Användning: node architecture-policy.mjs --pr <fil1> <fil2> ...');
    process.exit(1);
  }
  policy.checkPR(files);
} else if (command === '--list') {
  policy.listRules();
} else if (command === '--stats') {
  const stats = policy.getViolationStats();
  console.log(JSON.stringify(stats, null, 2));
} else {
  console.log('Användning:');
  console.log('  node architecture-policy.mjs --check [repo-path]  # Skanna hela repo');
  console.log('  node architecture-policy.mjs --pr <fil1> <fil2>   # Kontrollera specifika filer');
  console.log('  node architecture-policy.mjs --list               # Lista alla regler');
  console.log('  node architecture-policy.mjs --stats              # Visa överträdelse-statistik');
}