#!/usr/bin/env node
// ═══════════════════════════════════════════════════════════════════════════
// EOS Project Memory — Varför beslut fattades, vad som testades, etc.
// Erik-krav: "Inte chat history. Inte Markdown. Utan ett projektminne."
// ═══════════════════════════════════════════════════════════════════════════

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

const MEMORY_DIR = '/home/bernt/.openclaw/workspace/EOS/memory';
const DECISIONS_LOG = `${MEMORY_DIR}/decisions.jsonl`;
const EXPERIMENTS_LOG = `${MEMORY_DIR}/experiments.jsonl`;
const BUGS_LOG = `${MEMORY_DIR}/bugs.jsonl`;
const ARCHITECTURE_LOG = `${MEMORY_DIR}/architecture.jsonl`;

class ProjectMemory {
  constructor() {
    if (!existsSync(MEMORY_DIR)) {
      // Skapa med mkdirSync
      const { mkdirSync } = require('fs');
      mkdirSync(MEMORY_DIR, { recursive: true });
    }
  }

  /**
   * Logga ett beslut
   */
  logDecision(decision) {
    const entry = {
      timestamp: new Date().toISOString(),
      type: 'decision',
      id: decision.id || `dec-${Date.now()}`,
      question: decision.question,
      answer: decision.answer,
      // Varför
      reasoning: decision.reasoning,
      alternatives: decision.alternatives || [],
      rejected: decision.rejected || [],
      // Vem
      decidedBy: decision.decidedBy,
      // Konsekvenser
      consequences: decision.consequences,
      // Status
      status: decision.status || 'active',
      // Om beslutet senare ändrades
      supersededBy: decision.supersededBy || null
    };

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

  /**
   * Logga ett experiment
   */
  logExperiment(experiment) {
    const entry = {
      timestamp: new Date().toISOString(),
      type: 'experiment',
      id: experiment.id || `exp-${Date.now()}`,
      hypothesis: experiment.hypothesis,
      method: experiment.method,
      result: experiment.result,
      conclusion: experiment.conclusion,
      // Lärande
      lesson: experiment.lesson,
      // Om experimentet misslyckades
      failure: experiment.failure || null
    };

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

  /**
   * Logga en bugg
   */
  logBug(bug) {
    const entry = {
      timestamp: new Date().toISOString(),
      type: 'bug',
      id: bug.id || `bug-${Date.now()}`,
      description: bug.description,
      component: bug.component,
      rootCause: bug.rootCause,
      fix: bug.fix,
      // Lärande
      lesson: bug.lesson,
      // Om buggar kunde ha förhindrats
      preventable: bug.preventable || false,
      prevention: bug.prevention || null
    };

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

  /**
   * Logga arkitekturförändring
   */
  logArchitecture(change) {
    const entry = {
      timestamp: new Date().toISOString(),
      type: 'architecture',
      id: change.id || `arch-${Date.now()}`,
      change: change.change,
      reason: change.reason,
      // Före/efter
      before: change.before,
      after: change.after,
      // Konsekvenser
      impact: change.impact,
      // Om ändringen ångrades
      reverted: change.reverted || false,
      revertReason: change.revertReason || null
    };

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

  /**
   * Sök i projektminnet
   */
  query(query) {
    const results = [];

    // Sök i alla loggar
    for (const log of [DECISIONS_LOG, EXPERIMENTS_LOG, BUGS_LOG, ARCHITECTURE_LOG]) {
      if (!existsSync(log)) continue;

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

      for (const entry of entries) {
        const text = JSON.stringify(entry).toLowerCase();
        if (text.includes(query.toLowerCase())) {
          results.push(entry);
        }
      }
    }

    return results;
  }

  /**
   * Besvara en fråga om projektets historia
   */
  answerQuestion(question) {
    const results = this.query(question);

    console.log(`🔍 "${question}"\n`);

    if (results.length === 0) {
      console.log('   Ingen information hittad.\n');
      return null;
    }

    for (const result of results.slice(0, 5)) {
      console.log(`   [${result.type.toUpperCase()}] ${result.id}`);
      console.log(`   ${result.question || result.hypothesis || result.description || result.change}`);
      console.log(`   ${result.answer || result.conclusion || result.fix || result.reason}`);
      console.log();
    }

    return results;
  }

  /**
   * Visa projektminnets struktur
   */
  showStructure() {
    console.log('📚 PROJECT MEMORY\n');

    const logs = [
      { name: 'Beslut', path: DECISIONS_LOG },
      { name: 'Experiment', path: EXPERIMENTS_LOG },
      { name: 'Buggar', path: BUGS_LOG },
      { name: 'Arkitektur', path: ARCHITECTURE_LOG }
    ];

    for (const log of logs) {
      const count = existsSync(log.path)
        ? readFileSync(log.path, 'utf8').split('\n').filter(l => l.trim()).length
        : 0;
      console.log(`   ${log.name}: ${count} entries`);
    }
    console.log();
  }
}

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

const memory = new ProjectMemory();
const command = process.argv[2] || '--structure';

if (command === '--structure') {
  memory.showStructure();
} else if (command === '--query') {
  const query = process.argv[3];
  if (!query) {
    console.log('Användning: node project-memory.mjs --query <fråga>');
    process.exit(1);
  }
  memory.answerQuestion(query);
} else if (command === '--log-decision') {
  memory.logDecision({
    question: process.argv[3] || 'Varför valde vi X?',
    answer: process.argv[4] || 'För att...',
    reasoning: process.argv[5] || 'Eftersom...',
    decidedBy: 'agent'
  });
  console.log('✅ Beslut loggat');
} else {
  console.log('Användning:');
  console.log('  node project-memory.mjs --structure              # Visa struktur');
  console.log('  node project-memory.mjs --query <fråga>          # Sök i minnet');
  console.log('  node project-memory.mjs --log-decision <q> <a> <r>  # Logga beslut');
}