together_mobile/lib/router/chat_route.dart

import 'package:go_router/go_router.dart';

import '/models/init_get_it.dart';
import '/models/route_state_model.dart';
import '/router/router_key.dart';
import '/screens/chat/chat_screen.dart';
import '/screens/message/friend_message_screen.dart';
import '/screens/message/group_chat_message_screen.dart';
import '/screens/message/image_view_screen/image_view_screen.dart';

final chatRoute = GoRoute(
  path: '/chat',
  name: 'Chat',
  builder: (context, state) {
    getIt.get<RouteState>().changeRoute('Chat');
    return ChatScreen();
  },
  routes: [
    GoRoute(
      path: 'message',
      name: 'Message',
      parentNavigatorKey: rootNavigatorKey,
      builder: (context, state) {
        int type = int.parse(state.uri.queryParameters['type']!);
        if (type == 0) {
          return FriendMessageScreen(
            friendId: state.uri.queryParameters['friendId']!,
          );
        } else {
          return GroupChatMessageScreen(
            groupChatId: state.uri.queryParameters['groupChatId']!,
          );
        }
      },
      routes: [
        GoRoute(
          path: 'image_view',
          name: 'ImageView',
          parentNavigatorKey: rootNavigatorKey,
          builder: (context, state) {
            Map<String, Object> extra = state.extra as Map<String, Object>;
            return ImageViewScreen(
              attachments:
                  extra['attachments']! as List<String>,
              initialIndex: extra['index']! as int,
            );
          },
        ),
      ],
    ),
  ],
);