#!/usr/bin/env node
// ═══════════════════════════════════════════════════════════════════════════
// SIL Validation — Fråga 1: Hjälper SIL verkligen människor?
// Mäter: tid till merge, regressionsbuggar, följsamhet, rätt vs fel
// ═══════════════════════════════════════════════════════════════════════════

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

const DECISION_LOG = '/home/bernt/.openclaw/workspace/SIL/validation/decision-log.jsonl';
const BASELINE_LOG = '/home/bernt/.openclaw/workspace/SIL/validation/baseline-log.jsonl';

class HumanImpactValidator {
  constructor() {
    this.decisions = this.loadLog(DECISION_LOG);
    this.baselines = this.loadLog(BASELINE_LOG);
  }

  loadLog(path) {
    if (!existsSync(path)) return [];
    return readFileSync(path, 'utf8')
      .split('\n')
      .filter(line => line.trim())
      .map(line => {
        try { return JSON.parse(line); } catch { return null; }
      })
      .filter(Boolean);
  }

  /**
   * Logga ett beslut med utfall
   */
  logDecision(decision) {
    const entry = {
      timestamp: new Date().toISOString(),
      pr: decision.pr,
      developer: decision.developer,
      // SIL:s rekommendation
      silRecommendation: decision.silRecommendation,
      silRiskScore: decision.silRiskScore,
      silConfidence: decision.silConfidence,
      // Utvecklarens beslut
      developerAction: decision.developerAction, // 'followed', 'ignored', 'modified'
      developerReason: decision.developerReason,
      // Utfall
      merged: decision.merged,
      mergeTime: decision.mergeTime, // timmar från PR till merge
      regressions: decision.regressions || [],
      // Utvärdering
      silWasRight: decision.silWasRight, // boolean eller null
      developerWasRight: decision.developerWasRight // boolean eller null
    };

    appendFileSync(DECISION_LOG, JSON.stringify(entry) + '\n', 'utf8');
    return entry;
  }

  /**
   * Beräkna baseline (utan SIL)
   */
  calculateBaseline() {
    const baseline = {
      avgMergeTime: this.calculateAvgMergeTime(this.baselines),
      regressionRate: this.calculateRegressionRate(this.baselines),
      totalPRs: this.baselines.length
    };

    return baseline;
  }

  /**
   * Beräkna metriker med SIL
   */
  calculateWithSIL() {
    const withSil = {
      avgMergeTime: this.calculateAvgMergeTime(this.decisions),
      regressionRate: this.calculateRegressionRate(this.decisions),
      followRate: this.calculateFollowRate(),
      ignoreRate: this.calculateIgnoreRate(),
      silAccuracy: this.calculateSILAccuracy(),
      totalPRs: this.decisions.length
    };

    return withSil;
  }

  calculateAvgMergeTime(entries) {
    const times = entries
      .map(e => e.mergeTime)
      .filter(t => t !== undefined && t !== null);

    if (times.length === 0) return null;
    return Math.round(times.reduce((a, b) => a + b, 0) / times.length * 10) / 10;
  }

  calculateRegressionRate(entries) {
    if (entries.length === 0) return null;
    const withRegressions = entries.filter(e =>
      e.regressions && e.regressions.length > 0
    ).length;
    return Math.round(withRegressions / entries.length * 100) + '%';
  }

  calculateFollowRate() {
    if (this.decisions.length === 0) return null;
    const followed = this.decisions.filter(d =>
      d.developerAction === 'followed'
    ).length;
    return Math.round(followed / this.decisions.length * 100) + '%';
  }

  calculateIgnoreRate() {
    if (this.decisions.length === 0) return null;
    const ignored = this.decisions.filter(d =>
      d.developerAction === 'ignored'
    ).length;
    return Math.round(ignored / this.decisions.length * 100) + '%';
  }

  calculateSILAccuracy() {
    const evaluated = this.decisions.filter(d => d.silWasRight !== null);
    if (evaluated.length === 0) return null;

    const correct = evaluated.filter(d => d.silWasRight).length;
    return Math.round(correct / evaluated.length * 100) + '%';
  }

  /**
   * Jämför SIL vs utvecklare
   */
  compareSILvsDeveloper() {
    const comparisons = [];

    for (const d of this.decisions) {
      if (d.silWasRight === null || d.developerWasRight === null) continue;

      comparisons.push({
        pr: d.pr,
        silRight: d.silWasRight,
        devRight: d.developerWasRight,
        scenario: d.silWasRight && d.developerWasRight ? 'both_right' :
                  d.silWasRight && !d.developerWasRight ? 'sil_right_dev_wrong' :
                  !d.silWasRight && d.developerWasRight ? 'dev_right_sil_wrong' :
                  'both_wrong'
      });
    }

    const scenarios = {
      both_right: comparisons.filter(c => c.scenario === 'both_right').length,
      sil_right_dev_wrong: comparisons.filter(c => c.scenario === 'sil_right_dev_wrong').length,
      dev_right_sil_wrong: comparisons.filter(c => c.scenario === 'dev_right_sil_wrong').length,
      both_wrong: comparisons.filter(c => c.scenario === 'both_wrong').length
    };

    return {
      total: comparisons.length,
      scenarios,
      silWinRate: comparisons.length > 0
        ? Math.round(scenarios.sil_right_dev_wrong / comparisons.length * 100) + '%'
        : 'N/A',
      devWinRate: comparisons.length > 0
        ? Math.round(scenarios.dev_right_sil_wrong / comparisons.length * 100) + '%'
        : 'N/A'
    };
  }

  /**
   * Generera rapport
   */
  generateReport() {
    const baseline = this.calculateBaseline();
    const withSil = this.calculateWithSIL();
    const comparison = this.compareSILvsDeveloper();

    const report = {
      timestamp: new Date().toISOString(),
      baseline,
      withSil,
      comparison,
      // Förbättringar
      improvements: {
        mergeTime: baseline.avgMergeTime && withSil.avgMergeTime
          ? Math.round((baseline.avgMergeTime - withSil.avgMergeTime) / baseline.avgMergeTime * 100) + '%'
          : 'N/A',
        regressions: baseline.regressionRate && withSil.regressionRate
          ? Math.round((parseFloat(baseline.regressionRate) - parseFloat(withSil.regressionRate)) / parseFloat(baseline.regressionRate) * 100) + '%'
          : 'N/A'
      }
    };

    this.printReport(report);
    return report;
  }

  printReport(report) {
    console.log('╔═══════════════════════════════════════════════════════════════╗');
    console.log('║           VALIDATION: FRÅGA 1                                 ║');
    console.log('║           Hjälper SIL verkligen människor?                    ║');
    console.log('╚═══════════════════════════════════════════════════════════════╝');
    console.log();

    console.log('📊 BASELINE (utan SIL)');
    console.log();
    console.log(`   PR:er: ${report.baseline.totalPRs}`);
    console.log(`   Genomsnittlig tid till merge: ${report.baseline.avgMergeTime || 'N/A'} timmar`);
    console.log(`   Regressionsfrekvens: ${report.baseline.regressionRate || 'N/A'}`);
    console.log();

    console.log('📊 MED SIL');
    console.log();
    console.log(`   PR:er: ${report.withSil.totalPRs}`);
    console.log(`   Genomsnittlig tid till merge: ${report.withSil.avgMergeTime || 'N/A'} timmar`);
    console.log(`   Regressionsfrekvens: ${report.withSil.regressionRate || 'N/A'}`);
    console.log(`   Följsamhet: ${report.withSil.followRate || 'N/A'}`);
    console.log(`   Ignorans: ${report.withSil.ignoreRate || 'N/A'}`);
    console.log(`   SIL:s accuracy: ${report.withSil.silAccuracy || 'N/A'}`);
    console.log();

    console.log('📈 FÖRBÄTTRINGAR');
    console.log();
    console.log(`   Tid till merge: ${report.improvements.mergeTime}`);
    console.log(`   Regressionsfel: ${report.improvements.regressions}`);
    console.log();

    console.log('⚔️  SIL VS UTVECKLARE');
    console.log();
    console.log(`   Totala jämförelser: ${report.comparison.total}`);
    console.log(`   Båda har rätt: ${report.comparison.scenarios.both_right}`);
    console.log(`   SIL rätt, utvecklare fel: ${report.comparison.scenarios.sil_right_dev_wrong}`);
    console.log(`   Utvecklare rätt, SIL fel: ${report.comparison.scenarios.dev_right_sil_wrong}`);
    console.log(`   Båda har fel: ${report.comparison.scenarios.both_wrong}`);
    console.log();
    console.log(`   SIL vinner: ${report.comparison.silWinRate}`);
    console.log(`   Utvecklare vinner: ${report.comparison.devWinRate}`);
    console.log();

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

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

const validator = new HumanImpactValidator();
const command = process.argv[2] || '--report';

if (command === '--report') {
  validator.generateReport();
} else if (command === '--log') {
  // Exempel på att logga ett beslut
  const decision = {
    pr: process.argv[3] || 'PR-123',
    developer: process.argv[4] || 'developer@example.com',
    silRecommendation: process.argv[5] || 'APPROVE',
    silRiskScore: 25,
    silConfidence: 0.85,
    developerAction: process.argv[6] || 'followed',
    merged: true,
    mergeTime: 4.5,
    regressions: [],
    silWasRight: true,
    developerWasRight: true
  };
  validator.logDecision(decision);
  console.log('✅ Beslut loggat');
} else {
  console.log('Användning:');
  console.log('  node human-impact.mjs --report           # Generera rapport');
  console.log('  node human-impact.mjs --log <pr> <dev> <rec> <action>  # Logga beslut');
}