// ignore_for_file: avoid_print, prefer_final_fields

import 'dart:io';
import 'package:dart_framework/socket/packets/message_common.pb.dart';
import 'package:dart_framework/socket/protobuf_client.dart';
import 'package:dart_framework/utils/system_util.dart';
import 'package:protobuf/protobuf.dart';

abstract class ProtobufServer
{
  List<ProtobufClient> _clientList = [];
  bool _started = false;
  late ServerSocket? _server;
  final String _host;
  final int _port;
  final ProtobufClient Function(Socket) _createNewClient;

  bool get started => _started;
  
  ProtobufServer(this._host, this._port, this._createNewClient);
  
  Future start() async
  {
    _server = await ServerSocket.bind(_host, _port);
    _server?.listen((Socket socket) {
      var client = _createNewClient(socket);
      client.addDisconnectListener(onDisconnectedClient);
      client.addListener(onTemplateData);
      _clientList.add(client);
      onClientConnected(client);
      _started = true;
    });
    return simpleFuture;
  }

  //implement in child
  void onClientConnected(ProtobufClient client);

  void onDisconnectedClient(ProtobufClient client)
  {
    _clientList.remove(client);
    client.dispose();
    print('Client disconnected');
  }

  void onTemplateData(TestData data)
  {
    print(data.message);
    var template = TestData();
    template.index = 3125;
    template.message = 'This message from flutter';
    _clientList[0].send(template);
  }

  Future broadcast<T extends GeneratedMessage>(T data) async {
    for(var client in _clientList) {
      await client.send(data);
    }
  }

  Future stop() async {
    await _server?.close();
    _started = false;
    return simpleFuture;
  }
}