#!/usr/bin/env node
// stop-assessment-reminder.mjs
// Reminds about uncommitted assessments and suggests next steps on session end.
// Output: JSON { systemMessage } to stdout. Always exits 0 (advisory, never blocking).

import { readdirSync, statSync, existsSync } from 'node:fs';
import { join } from 'node:path';
import { loadAiActDeadlines } from '../../scripts/kb-update/lib/ai-act-deadlines.mjs';

const cwd = process.cwd();
const workDir = join(cwd, '.work');
const TWELVE_HOURS_MS = 12 * 60 * 60 * 1000;
const now = Date.now();

// No .work/ directory — nothing to remind about
if (!existsSync(workDir)) {
  console.log('{}');
  process.exit(0);
}

// Find recent state files in .work/
const recentSessions = [];

try {
  const entries = readdirSync(workDir, { withFileTypes: true });
  for (const entry of entries) {
    if (!entry.isDirectory()) continue;
    const sessionDir = join(workDir, entry.name);
    try {
      const files = readdirSync(sessionDir);
      for (const file of files) {
        const filePath = join(sessionDir, file);
        try {
          const stat = statSync(filePath);
          if (now - stat.mtimeMs < TWELVE_HOURS_MS) {
            recentSessions.push(entry.name);
            break;
          }
        } catch {
          // Skip
        }
      }
    } catch {
      // Skip
    }
  }
} catch {
  console.log('{}');
  process.exit(0);
}

if (recentSessions.length === 0) {
  console.log('{}');
  process.exit(0);
}

// Build reminder
const suggestions = [
  '/architect:adr — generer ADR fra vurderinger',
  '/architect:export — eksporter til PDF',
  '/architect:summary — lag beslutningsnotat',
];

// Add AI Act suggestion if the nearest deadline (from the shared source) is within 180 days
const DAY_MS = 24 * 60 * 60 * 1000;
const aiActSource = loadAiActDeadlines();
let nearestDeadline = null;
for (const dl of aiActSource ? aiActSource.deadlines : []) {
  const daysLeft = Math.ceil((new Date(dl.date).getTime() - now) / DAY_MS);
  if (daysLeft > 0 && daysLeft <= 180 && (!nearestDeadline || daysLeft < nearestDeadline.daysLeft)) {
    nearestDeadline = { ...dl, daysLeft };
  }
}
if (nearestDeadline) {
  suggestions.push(`/architect:classify — EU AI Act-klassifisering (${nearestDeadline.daysLeft}d til ${nearestDeadline.label})`);
}

const sessionList = recentSessions.join(', ');
const message = `Architect: ${recentSessions.length} aktiv(e) vurdering(er) i .work/ (${sessionList}). Foreslåtte neste steg: ${suggestions.join(' | ')}`;

console.log(JSON.stringify({ systemMessage: message }));
process.exit(0);