import 'dart:async';
import 'dart:convert';
import 'dart:io';

class Rpc {
  final WebSocket ws;
  int _id = 0;
  final _pending = <int, Completer<Map<String, dynamic>>>{};
  Rpc(this.ws) {
    ws.listen((raw) {
      final m = jsonDecode(raw as String) as Map<String, dynamic>;
      final rid = m['id'];
      if (rid is int && _pending.containsKey(rid)) _pending.remove(rid)!.complete(m);
    });
  }
  Future<Map<String, dynamic>> call(String m, [Map<String, dynamic> p = const {}]) {
    final id = ++_id;
    final c = Completer<Map<String, dynamic>>();
    _pending[id] = c;
    ws.add(jsonEncode({'id': id, 'method': m, 'params': p}));
    return c.future.timeout(const Duration(seconds: 20));
  }
}

Future<Rpc> open(String host, String? locale) async {
  final ws = await WebSocket.connect('ws://$host:4444');
  final rpc = Rpc(ws);
  final hello = await rpc.call('JSONRPC.Hello',
      locale == null ? {} : {'locale': locale});
  final p = hello['params'] as Map<String, dynamic>;
  print('Hello(locale=${locale ?? "<omis>"}) -> locale renvoyée: "${p['locale']}"  language: "${p['language']}"');
  return rpc;
}

/// Renvoie quelques displayName de ThingClass + leurs states/actions.
Future<void> sample(Rpc rpc, String tag) async {
  final r = await rpc.call('Integrations.GetThingClasses', {});
  final classes = (r['params']['thingClasses'] as List).cast<Map<String, dynamic>>();
  print('  [$tag] ${classes.length} thingClasses');
  for (final name in ['Smart Meter', 'Wallbox', 'Relay', 'Light']) {
    final hit = classes.firstWhere(
        (c) => (c['displayName'] as String?)?.contains(name) ?? false,
        orElse: () => {});
    if (hit.isNotEmpty) {
      print('  [$tag]   ThingClass "${hit['displayName']}" (name=${hit['name']})');
      final states = (hit['stateTypes'] as List?) ?? [];
      if (states.isNotEmpty) {
        print('  [$tag]     state[0].displayName = "${states.first['displayName']}"');
      }
      break;
    }
  }
  // Premiers displayName bruts, pour comparaison inter-locale
  final first = classes.take(5).map((c) => c['displayName']).toList();
  print('  [$tag]   5 premiers: $first');

  final v = await rpc.call('Integrations.GetVendors', {});
  final vendors = (v['params']['vendors'] as List).cast<Map<String, dynamic>>();
  print('  [$tag]   vendors: ${vendors.take(5).map((e) => e['displayName']).toList()}');
}

Future<void> main(List<String> args) async {
  final host = args.isNotEmpty ? args[0] : '192.168.1.75';

  print('=== 1. Deux connexions SIMULTANÉES, locales différentes ===');
  final de = await open(host, 'de_DE');
  final fr = await open(host, 'fr_FR');
  await sample(de, 'de_DE');
  await sample(fr, 'fr_FR');

  print('\n=== 2. Locale omise (défaut du processus) ===');
  final def = await open(host, null);
  await sample(def, 'défaut');

  print('\n=== 3. Locale absurde ===');
  final zz = await open(host, 'zz_ZZ');
  await sample(zz, 'zz_ZZ');

  print('\n=== 4. Re-Hello sur une connexion existante (de_DE -> fr_FR) ===');
  final h = await de.call('JSONRPC.Hello', {'locale': 'fr_FR'});
  print('  locale renvoyée après re-Hello: "${h['params']['locale']}"');
  await sample(de, 'de->fr');

  print('\n=== 5. Nos chaînes NymeaEnergy ===');
  final lc = await fr.call('NymeaEnergy.GetLoadConfig', {});
  print('  [fr_FR] label de charge: '
      '${(lc['params']['loadConfigs'] as List).map((e) => e['label']).toList()}');

  await de.ws.close();
  await fr.ws.close();
  await def.ws.close();
  await zz.ws.close();
}