import { readFileSync } from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import * as repo from '../db/repos/monitored_services.js';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const SEED_FILE = path.join(__dirname, '../../config/services.json');
export const CATEGORY_ORDER = ['agents', 'infrastructure', 'media', 'other'];

// Icon slug: explicit `icon`, else slugified name. Pure.
export function iconSlug(svc) {
  return (svc.icon || svc.name).toLowerCase().replace(/[^a-z0-9]+/g, '-').replace(/(^-|-$)/g, '');
}

// Group services by category in CATEGORY_ORDER (unknown categories last). Pure.
export function grouped(services) {
  const map = new Map();
  for (const s of services) {
    const cat = CATEGORY_ORDER.includes(s.category) ? s.category : 'other';
    if (!map.has(cat)) map.set(cat, []);
    map.get(cat).push(s);
  }
  return [...CATEGORY_ORDER, ...[...map.keys()].filter(c => !CATEGORY_ORDER.includes(c))]
    .filter(c => map.has(c))
    .map(category => ({ category, services: map.get(category) }));
}

// One-time bootstrap: if the registry table is empty, populate it from the
// version-controlled config/services.json seed. Idempotent (no-op once seeded).
export async function seedFromConfig() {
  if ((await repo.count()) > 0) return 0;
  let seed;
  try { seed = JSON.parse(readFileSync(SEED_FILE, 'utf8')); }
  catch { return 0; }
  let n = 0;
  for (const s of seed) {
    try { await repo.create({ ...s, source: 'manual', enabled: true }); n++; }
    catch { /* skip a bad/duplicate seed row */ }
  }
  return n;
}