custom_posthog_observer.dart

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import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';
import 'package:posthog_flutter/posthog_flutter.dart';
 
class CustomPosthogObserver extends NavigatorObserver {
  @override
  void didPush(Route<dynamic> route, Route<dynamic>? previousRoute) {
    super.didPush(route, previousRoute);
    
    final routeName = _getRouteName(route);
    
    if (routeName != null) {
      Posthog().screen(
        screenName: routeName,
        properties: {
          'previous_screen': _getRouteName(previousRoute) ?? 'unknown',
        },
      );
    }
  }
 
  @override
  void didReplace({Route<dynamic>? newRoute, Route<dynamic>? oldRoute}) {
    super.didReplace(newRoute: newRoute, oldRoute: oldRoute);
    
    final routeName = _getRouteName(newRoute);
    if (routeName != null) {
      Posthog().screen(
        screenName: routeName,
        properties: {
          'previous_screen': _getRouteName(oldRoute) ?? 'unknown',
          'navigation_type': 'replace',
        },
      );
    }
  }
 
  @override
  void didPop(Route<dynamic> route, Route<dynamic>? previousRoute) {
    super.didPop(route, previousRoute);
    
    final routeName = _getRouteName(previousRoute);
    if (routeName != null) {
      Posthog().screen(
        screenName: routeName,
        properties: {
          'previous_screen': _getRouteName(route) ?? 'unknown',
          'navigation_type': 'pop',
        },
      );
    }
  }
 
  String? _getRouteName(Route<dynamic>? route) {
    if (route == null) return null;
    
    if (route.settings is GoRouteData) {
      return route.settings.name;
    }
    
    return route.settings.name;
  }
}