check online indexer on startup^in bootstrap nodes; Don't use it in app if offline

config/indexer_endpoints.json

+[
+    "https://duniter-indexer.coinduf.eu/v1/graphql",
+    "http://192.168.1.72:8080/v1/graphql"
+]

lib/globals.dart

@@ -51,3 +51,5 @@ String currencyName = 'ĞD';
 
 // Debug
 const debugPin = true;
+
+String indexerEndpoint = '';

lib/main.dart

@@ -23,6 +23,7 @@ import 'package:gecko/providers/cesium_plus.dart';
 import 'package:gecko/models/chest_data.dart';
 import 'package:gecko/providers/chest_provider.dart';
 import 'package:gecko/models/g1_wallets_list.dart';
+import 'package:gecko/providers/duniter_indexer.dart';
 import 'package:gecko/providers/generate_wallets.dart';
 import 'package:gecko/providers/substrate_sdk.dart';
 import 'package:gecko/providers/wallets_profiles.dart';
@@ -56,6 +57,7 @@ Future<void> main() async {
   }
 
   HomeProvider _homeProvider = HomeProvider();
+  DuniterIndexer _duniterIndexer = DuniterIndexer();
   await _homeProvider.initHive();
   appVersion = await _homeProvider.getAppVersion();
   prefs = await SharedPreferences.getInstance();
@@ -80,8 +82,10 @@ Future<void> main() async {
   }
   // log.d(await configBox.get('endpoint'));
 
-  // const indexerEndpoint = "http://192.168.1.72:8080/v1/graphql";
-  const indexerEndpoint = "https://duniter-indexer.coinduf.eu/v1/graphql";
+  await _duniterIndexer.getValidIndexerEndpoint();
+  // _duniterIndexer.indexerEndpoint = "http://192.168.1.72:8080/v1/graphql";
+  // _duniterIndexer.indexerEndpoint =
+  //     "https://duniter-indexer.coinduf.eu/v1/graphql";
 
   HttpOverrides.global = MyHttpOverrides();
 
@@ -99,7 +103,7 @@ Future<void> main() async {
     await SentryFlutter.init((options) {
       options.dsn =
           'https://c09587b46eaa42e8b9fda28d838ed180@o496840.ingest.sentry.io/5572110';
-    }, appRunner: () => runApp(const Gecko(indexerEndpoint)));
+    }, appRunner: () => runApp(Gecko(indexerEndpoint)));
 
     // runZoned<Future<void>>(
     //       () async {
@@ -116,7 +120,7 @@ Future<void> main() async {
   } else {
     print('Debug mode enabled: No sentry alerte');
 
-    runApp(const Gecko(indexerEndpoint));
+    runApp(Gecko(indexerEndpoint));
   }
 }
 
@@ -149,7 +153,8 @@ class Gecko extends StatelessWidget {
         ChangeNotifierProvider(create: (_) => WalletOptionsProvider()),
         ChangeNotifierProvider(create: (_) => SearchProvider()),
         ChangeNotifierProvider(create: (_) => CesiumPlusProvider()),
-        ChangeNotifierProvider(create: (_) => SubstrateSdk())
+        ChangeNotifierProvider(create: (_) => SubstrateSdk()),
+        ChangeNotifierProvider(create: (_) => DuniterIndexer())
       ],
       child: GraphQLProvider(
         client: _client,

lib/providers/duniter_indexer.dart

+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:gecko/globals.dart';
+import 'package:gecko/models/queries_indexer.dart';
+import 'package:gecko/models/wallet_data.dart';
+import 'package:gecko/providers/wallet_options.dart';
+import 'package:graphql_flutter/graphql_flutter.dart';
+import 'package:provider/provider.dart';
+
+class DuniterIndexer with ChangeNotifier {
+  Map<String, String?> walletNameIndexer = {};
+
+  void reload() {
+    notifyListeners();
+  }
+
+  Future checkIndexerEndpoint() async {
+    final oldEndpoint = indexerEndpoint;
+    while (true) {
+      await Future.delayed(const Duration(seconds: 30));
+      final _client = HttpClient();
+      _client.connectionTimeout = const Duration(milliseconds: 1000);
+      try {
+        final request = await _client.postUrl(Uri.parse(oldEndpoint));
+        final response = await request.close();
+        if (response.statusCode != 200) {
+          log.d('INDEXER IS OFFILINE');
+          indexerEndpoint = '';
+        } else {
+          // log.d('Indexer is online');
+          indexerEndpoint = oldEndpoint;
+        }
+      } catch (e) {
+        log.d('INDEXER IS OFFILINE');
+        indexerEndpoint = '';
+      }
+    }
+  }
+
+  Future<String> getValidIndexerEndpoint() async {
+    List _listEndpoints = await rootBundle
+        .loadString('config/indexer_endpoints.json')
+        .then((jsonStr) => jsonDecode(jsonStr));
+    // _listEndpoints.shuffle();
+
+    int i = 0;
+    // String _endpoint = '';
+    int _statusCode = 0;
+
+    final _client = HttpClient();
+    _client.connectionTimeout = const Duration(milliseconds: 1000);
+
+    do {
+      int listLenght = _listEndpoints.length;
+      if (i >= listLenght) {
+        log.e('NO VALID INDEXER ENDPOINT FOUND');
+        indexerEndpoint = '';
+        break;
+      }
+      log.d(
+          (i + 1).toString() + 'n indexer endpoint try: ${_listEndpoints[i]}');
+
+      if (i != 0) {
+        await Future.delayed(const Duration(milliseconds: 300));
+      }
+
+      try {
+        final request = await _client.postUrl(Uri.parse(_listEndpoints[i]));
+        final response = await request.close();
+
+        indexerEndpoint = _listEndpoints[i];
+        _statusCode = response.statusCode;
+        i++;
+      } on TimeoutException catch (_) {
+        log.e('This endpoint is timeout, next');
+        _statusCode = 50;
+        i++;
+        continue;
+      } on SocketException catch (_) {
+        log.e('This endpoint is a bad endpoint, next');
+        _statusCode = 70;
+        i++;
+        continue;
+      } on Exception {
+        log.e('Unknown error');
+        _statusCode = 60;
+        i++;
+        continue;
+      }
+    } while (_statusCode != 200);
+
+    log.i('INDEXER: ' + indexerEndpoint);
+    return indexerEndpoint;
+  }
+
+  Widget getNameByAddress(BuildContext context, String address,
+      [WalletData? wallet,
+      double size = 20,
+      bool canEdit = false,
+      Color _color = Colors.black,
+      FontWeight fontWeight = FontWeight.w400,
+      FontStyle fontStyle = FontStyle.italic]) {
+    WalletOptionsProvider _walletOptions =
+        Provider.of<WalletOptionsProvider>(context, listen: false);
+    log.d('iiiiiiiiiiiiiiiiiiiiiii $indexerEndpoint');
+    if (indexerEndpoint == '') {
+      if (wallet == null) {
+        return const SizedBox();
+      } else {
+        if (canEdit) {
+          return _walletOptions.walletName(context, wallet, size, _color);
+        } else {
+          return _walletOptions.walletNameController(context, wallet, size);
+        }
+      }
+    }
+
+    return Query(
+        options: QueryOptions(
+          document: gql(
+              getNameByAddressQ), // this is the query string you just created
+          variables: {
+            'address': address,
+          },
+          // pollInterval: const Duration(seconds: 10),
+        ),
+        builder: (QueryResult result,
+            {VoidCallback? refetch, FetchMore? fetchMore}) {
+          if (result.hasException) {
+            return Text(result.exception.toString());
+          }
+
+          if (result.isLoading) {
+            return const Text('Loading');
+          }
+
+          walletNameIndexer[address] =
+              result.data?['account_by_pk']?['identity']?['name'];
+
+          if (walletNameIndexer[address] == null) {
+            if (wallet == null) {
+              return const SizedBox();
+            } else {
+              if (canEdit) {
+                return _walletOptions.walletName(context, wallet, size, _color);
+              } else {
+                return _walletOptions.walletNameController(
+                    context, wallet, size);
+              }
+            }
+          }
+
+          return Text(
+            _color == Colors.grey[700]!
+                ? '(${walletNameIndexer[address]!})'
+                : walletNameIndexer[address]!,
+            style: TextStyle(
+              fontSize: size,
+              color: _color,
+              fontWeight: fontWeight,
+              fontStyle: fontStyle,
+            ),
+          );
+        });
+  }
+}

lib/providers/wallet_options.dart

@@ -2,7 +2,7 @@ import 'dart:io';
 import 'package:flutter/material.dart';
 import 'dart:async';
 import 'package:gecko/globals.dart';
-import 'package:gecko/models/queries_indexer.dart';
+import 'package:gecko/providers/duniter_indexer.dart';
 import 'package:gecko/providers/my_wallets.dart';
 import 'package:gecko/models/wallet_data.dart';
 import 'package:gecko/providers/substrate_sdk.dart';
@@ -10,7 +10,6 @@ import 'package:gecko/screens/animated_text.dart';
 import 'package:gecko/screens/common_elements.dart';
 import 'package:gecko/screens/myWallets/unlocking_wallet.dart';
 import 'package:gecko/screens/transaction_in_progress.dart';
-import 'package:graphql_flutter/graphql_flutter.dart';
 import 'package:image_picker/image_picker.dart';
 import 'package:provider/provider.dart';
 import 'package:image_cropper/image_cropper.dart';
@@ -27,7 +26,6 @@ class WalletOptionsProvider with ChangeNotifier {
   TextEditingController nameController = TextEditingController();
   late bool isDefaultWallet;
   bool canValidateNameBool = false;
-  Map<String, String?> walletNameIndexer = {};
 
   Future<NewWallet>? get badWallet => null;
 
@@ -130,6 +128,9 @@ class WalletOptionsProvider with ChangeNotifier {
 
   Widget idtyStatus(BuildContext context, String address,
       {bool isOwner = false, Color color = Colors.black}) {
+DuniterIndexer _duniterIndexer =
+        Provider.of<DuniterIndexer>(context, listen: false);
+        
     _showText(String text,
         [double size = 18, bool _bold = false, bool smooth = true]) {
       log.d(text);
@@ -175,7 +176,7 @@ class WalletOptionsProvider with ChangeNotifier {
                 {
                   return isOwner
                       ? _showText('Identité confirmé')
-                      : getNameByAddress(context, address, null, 20, true,
+                      : _duniterIndexer.getNameByAddress(context, address, null, 20, true,
                           Colors.grey[700]!, FontWeight.w500, FontStyle.italic);
                 }
 
@@ -183,7 +184,7 @@ class WalletOptionsProvider with ChangeNotifier {
                 {
                   return isOwner
                       ? _showText('Membre validé !', 18, true)
-                      : getNameByAddress(context, address, null, 20, true,
+                      : _duniterIndexer.getNameByAddress(context, address, null, 20, true,
                           Colors.black, FontWeight.w600, FontStyle.normal);
                 }
 
@@ -430,60 +431,7 @@ class WalletOptionsProvider with ChangeNotifier {
     return _address;
   }
 
-  Widget getNameByAddress(BuildContext context, String address,
-      [WalletData? wallet,
-      double size = 20,
-      bool canEdit = false,
-      Color _color = Colors.black,
-      FontWeight fontWeight = FontWeight.w400,
-      FontStyle fontStyle = FontStyle.italic]) {
-    return Query(
-        options: QueryOptions(
-          document: gql(
-              getNameByAddressQ), // this is the query string you just created
-          variables: {
-            'address': address,
-          },
-          // pollInterval: const Duration(seconds: 10),
-        ),
-        builder: (QueryResult result,
-            {VoidCallback? refetch, FetchMore? fetchMore}) {
-          if (result.hasException) {
-            return Text(result.exception.toString());
-          }
-
-          if (result.isLoading) {
-            return const Text('Loading');
-          }
-
-          walletNameIndexer[address] =
-              result.data?['account_by_pk']?['identity']?['name'];
-
-          if (walletNameIndexer[address] == null) {
-            if (wallet == null) {
-              return const SizedBox();
-            } else {
-              if (canEdit) {
-                return walletName(context, wallet, size, _color);
-              } else {
-                return walletNameController(context, wallet, size);
-              }
-            }
-          }
 
-          return Text(
-            _color == Colors.grey[700]!
-                ? '(${walletNameIndexer[address]!})'
-                : walletNameIndexer[address]!,
-            style: TextStyle(
-              fontSize: size,
-              color: _color,
-              fontWeight: fontWeight,
-              fontStyle: fontStyle,
-            ),
-          );
-        });
-  }
 
   Widget walletNameController(BuildContext context, WalletData wallet,
       [double size = 20]) {

lib/screens/home.dart

@@ -3,6 +3,7 @@ import 'package:connectivity_plus/connectivity_plus.dart';
 import 'package:gecko/globals.dart';
 import 'package:gecko/models/stateful_wrapper.dart';
 import 'package:gecko/providers/chest_provider.dart';
+import 'package:gecko/providers/duniter_indexer.dart';
 import 'package:gecko/providers/home.dart';
 import 'package:gecko/providers/substrate_sdk.dart';
 import 'package:gecko/providers/wallets_profiles.dart';
@@ -145,6 +146,9 @@ class HomeScreen extends StatelessWidget {
                     }
                   });
                 }
+                DuniterIndexer _duniterIndexer =
+                    Provider.of<DuniterIndexer>(ctx, listen: false);
+                _duniterIndexer.checkIndexerEndpoint();
               });
             },
             child: isWalletsExists ? geckHome(context) : welcomeHome(context)

lib/screens/myWallets/wallet_options.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 import 'dart:io';
 import 'package:flutter/material.dart';
 import 'package:gecko/globals.dart';
+import 'package:gecko/providers/duniter_indexer.dart';
 import 'package:gecko/providers/home.dart';
 import 'package:gecko/providers/my_wallets.dart';
 import 'package:gecko/models/wallet_data.dart';
@@ -31,6 +32,8 @@ class WalletOptions extends StatelessWidget {
         Provider.of<MyWalletsProvider>(context, listen: false);
     HomeProvider _homeProvider =
         Provider.of<HomeProvider>(context, listen: false);
+    DuniterIndexer _duniterIndexer =
+        Provider.of<DuniterIndexer>(context, listen: false);
 
     log.d(_walletOptions.address.text);
 
@@ -100,7 +103,7 @@ class WalletOptions extends StatelessWidget {
                           Column(
                               crossAxisAlignment: CrossAxisAlignment.center,
                               children: <Widget>[
-                                _walletOptions.getNameByAddress(
+                                _duniterIndexer.getNameByAddress(
                                     context,
                                     walletProvider.address.text,
                                     wallet,

lib/screens/myWallets/wallets_home.dart

@@ -3,6 +3,7 @@ import 'dart:io';
 import 'package:flutter/services.dart';
 import 'package:gecko/globals.dart';
 import 'package:gecko/models/chest_data.dart';
+import 'package:gecko/providers/duniter_indexer.dart';
 import 'package:gecko/providers/home.dart';
 import 'package:gecko/providers/my_wallets.dart';
 import 'package:gecko/models/wallet_data.dart';
@@ -136,6 +137,8 @@ class WalletsHome extends StatelessWidget {
         Provider.of<MyWalletsProvider>(context);
     WalletOptionsProvider _walletOptions =
         Provider.of<WalletOptionsProvider>(context, listen: false);
+    DuniterIndexer _duniterIndexer =
+        Provider.of<DuniterIndexer>(context, listen: false);
     final bool isWalletsExists = _myWalletProvider.checkIfWalletExist();
 
     if (!isWalletsExists) {
@@ -263,7 +266,7 @@ class WalletsHome extends StatelessWidget {
                               child: Padding(
                                 padding:
                                     const EdgeInsets.symmetric(horizontal: 5),
-                                child: _walletOptions.getNameByAddress(
+                                child: _duniterIndexer.getNameByAddress(
                                     context,
                                     _repository.address!,
                                     _repository,

pubspec.yaml

@@ -5,7 +5,7 @@ description: Pay with G1.
 # pub.dev using `pub publish`. This is preferred for private packages.
 publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 
-version: 0.0.9+1
+version: 0.0.9+2
 
 environment:
   sdk: '>=2.12.0 <3.0.0'
@@ -29,6 +29,7 @@ dependencies:
   flutter_logs: ^2.1.4
   flutter_svg: ^0.22.0
   graphql_flutter: ^5.1.1-beta.3
+  
   hive: ^2.0.4
   hive_flutter: ^1.1.0
   http: ^0.13.4
@@ -98,7 +99,7 @@ flutter:
 
   assets:
     - images/
-    - config/gdev_endpoints.json
+    - config/
     - assets/
     - assets/home/
     - assets/avatars/