From c65adba2fa3f7e2675cc164170d5883411d2120a Mon Sep 17 00:00:00 2001
From: Plague Fox <plugfox@gmail.com>
Date: Tue, 28 Nov 2023 04:48:30 +0400
Subject: [PATCH] Update OctopusInformationProvider

---
 lib/src/controller/information_provider.dart | 65 +++++++++++++++++---
 lib/src/state/state_util.dart                |  2 +-
 2 files changed, 56 insertions(+), 11 deletions(-)

diff --git a/lib/src/controller/information_provider.dart b/lib/src/controller/information_provider.dart
index baf0541..dea8871 100644
--- a/lib/src/controller/information_provider.dart
+++ b/lib/src/controller/information_provider.dart
@@ -2,6 +2,7 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
 import 'package:meta/meta.dart';
+import 'package:octopus/src/state/jenkins_hash.dart';
 
 /// The route information provider that propagates
 /// the platform route information changes.
@@ -25,6 +26,7 @@ class OctopusInformationProvider extends RouteInformationProvider
     Map<String, Object?>? initialState,
     Listenable? refreshListenable,
   })  : _value = _initialRouteInformation(initialLocation, initialState),
+        _valueInEngine = _kEmptyRouteInformation,
         _refreshListenable = refreshListenable {
     _refreshListenable?.addListener(notifyListeners);
   }
@@ -52,6 +54,8 @@ class OctopusInformationProvider extends RouteInformationProvider
   final Listenable? _refreshListenable;
 
   static WidgetsBinding get _binding => WidgetsBinding.instance;
+  static final RouteInformation _kEmptyRouteInformation =
+      RouteInformation(uri: Uri());
 
   @override
   void routerReportsNewRouteInformation(
@@ -63,10 +67,28 @@ class OctopusInformationProvider extends RouteInformationProvider
     } */
 
     // Avoid adding a new history entry if the route is the same as before.
-    final replace = type == RouteInformationReportingType.neglect ||
+    /* final replace = type == RouteInformationReportingType.neglect ||
         (type == RouteInformationReportingType.none &&
             _valueInEngine.uri == routeInformation.uri &&
-            _valueInEngine.state == routeInformation.state);
+            _valueInEngine.state == routeInformation.state); */
+
+    final bool replace;
+    switch (type) {
+      case RouteInformationReportingType.none:
+        if (_valueInEngine.uri == routeInformation.uri) {
+          if (identical(_valueInEngine.state, routeInformation.state)) {
+            return;
+          }
+          final hashA = jenkinsHash(_valueInEngine.state);
+          final hashB = jenkinsHash(routeInformation.state);
+          if (hashA == hashB) return;
+        }
+        replace = _valueInEngine == _kEmptyRouteInformation;
+      case RouteInformationReportingType.neglect:
+        replace = true;
+      case RouteInformationReportingType.navigate:
+        replace = false;
+    }
 
     /* if (!replace && routeInformation is OctopusRouteInformation) {
       replace = routeInformation.replace;
@@ -78,8 +100,7 @@ class OctopusInformationProvider extends RouteInformationProvider
       state: routeInformation.state,
       replace: replace,
     );
-    _value = routeInformation;
-    _valueInEngine = routeInformation;
+    _value = _valueInEngine = routeInformation;
   }
 
   @override
@@ -91,16 +112,12 @@ class OctopusInformationProvider extends RouteInformationProvider
     if (shouldNotify) notifyListeners();
   }
 
-  RouteInformation _valueInEngine = RouteInformation(
-    uri: Uri.tryParse(
-      WidgetsBinding.instance.platformDispatcher.defaultRouteName,
-    ),
-  );
+  RouteInformation _valueInEngine;
 
   void _platformReportsNewRouteInformation(RouteInformation routeInformation) {
     if (_value == routeInformation) return;
     _value = routeInformation;
-    _valueInEngine = routeInformation;
+    _valueInEngine = _kEmptyRouteInformation;
     notifyListeners();
   }
 
@@ -132,4 +149,32 @@ class OctopusInformationProvider extends RouteInformationProvider
     _platformReportsNewRouteInformation(routeInformation);
     return SynchronousFuture<bool>(true);
   }
+
+  @override
+  @Deprecated('Use didPushRouteInformation instead')
+  Future<bool> didPushRoute(String route) {
+    assert(
+        hasListeners,
+        'A OctopusInformationProvider must have '
+        'at least one listener before it can be used.');
+    _platformReportsNewRouteInformation(
+        RouteInformation(uri: Uri.tryParse(route)));
+    return SynchronousFuture<bool>(true);
+  }
 }
+
+
+/* Useful methods for the package
+
+  SystemNavigator.pop();
+  SystemNavigator.setFrameworkHandlesBack(true);
+  SystemNavigator.selectMultiEntryHistory();
+  SystemNavigator.selectSingleEntryHistory();
+  SystemNavigator.routeInformationUpdated(
+    uri: Uri.parse('/'),
+    state: const <String, Object?>{},
+    replace: false,
+  );
+  Router.neglect(context, () {});
+  Router.navigate(context, () {});
+*/
\ No newline at end of file
diff --git a/lib/src/state/state_util.dart b/lib/src/state/state_util.dart
index 5a98e68..1200fd7 100644
--- a/lib/src/state/state_util.dart
+++ b/lib/src/state/state_util.dart
@@ -72,10 +72,10 @@ abstract final class StateUtil {
     for (final node in state.children) {
       encodeNode(node, 0);
     }
-
     return Uri(
       pathSegments: segments,
       queryParameters: state.arguments.isEmpty ? null : state.arguments,
+      //fragment: ,
     );
   }