loris/lib/pages/notifications/notifications.dart

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

import 'package:flutter/material.dart';
import 'package:loris/pages/notifications/single_notif.dart';
import '../../business_logic/websocket.dart' as websocket;

final notifStream = StreamController<int>();

class Notifications extends StatefulWidget {
  const Notifications({Key? key}) : super(key: key);

  @override
  State<Notifications> createState() => _NotificationsState();
}

class _NotificationsState extends State<Notifications> {
  List<Widget> notifs = [];

  @override
  void initState() {
    for (int i = 0; i < websocket.map.length; i++) {
      final keyI = websocket.map.keys.toList()[i];
      websocket.map[keyI]!["home"]!.stream.listen((event) async {
        Map<String, dynamic> json = jsonDecode(event);
        if (json["event"] == "notification") {
          SingleNotif notif = SingleNotif(
            content: jsonDecode(json["payload"]),
          );
          if (mounted) {
            setState(() {
              notifStream.sink.add(1);
              notifs.insert(0, notif);
            });
          }
        }
      });
    }
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return ListView.separated(
        itemBuilder: ((context, index) => notifs[index]),
        separatorBuilder: (context, index) => const SizedBox(
              height: 8,
            ),
        itemCount: notifs.length);
  }
}