feat: global websocket connection for indexer and datapod

config/indexer_endpoints.json

 [
-    "https://gdev-indexer.p2p.legal",
-    "https://hasura.gdev.coinduf.eu",
-    "https://gdev-hasura.cgeek.fr",
-    "https://hasura-gdev.pini.fr"
+    "gdev-indexer.p2p.legal",
+    "gdev-hasura.cgeek.fr",
+    "hasura-gdev.pini.fr"
 ]

lib/globals.dart

@@ -29,7 +29,7 @@ const cesiumPod = "https://g1.data.le-sou.org";
 // String cesiumPod = "https://g1.data.presles.fr";
 // String cesiumPod = "https://g1.data.e-is.pro";
 
-const datapodEndpoint = 'https://gdev-datapod.p2p.legal';
+const datapodEndpoint = 'gdev-datapod.p2p.legal';
 // const v2sDatapod = 'http://10.0.2.2:8080';
 
 // Contexts

lib/providers/duniter_indexer.dart

@@ -16,6 +16,7 @@ class DuniterIndexer with ChangeNotifier {
   bool isLoadingIndexer = false;
   bool hasNextPage = false;
   Future<QueryResult<Object?>?> Function()? refetch;
+  late GraphQLClient indexerClient;
 
   void reload() {
     notifyListeners();
@@ -27,10 +28,11 @@ class DuniterIndexer with ChangeNotifier {
     final client = HttpClient();
     client.connectionTimeout = const Duration(milliseconds: 4000);
     try {
-      final request = await client.postUrl(Uri.parse('$endpoint/v1/graphql'));
+      final request =
+          await client.postUrl(Uri.parse('https://$endpoint/v1/graphql'));
       final response = await request.close();
       if (response.statusCode != 200) {
-        log.w('INDEXER IS OFFLINE');
+        log.w('Indexer $endpoint is offline');
         indexerEndpoint = '';
         isLoadingIndexer = false;
         notifyListeners();
@@ -46,7 +48,7 @@ class DuniterIndexer with ChangeNotifier {
         return true;
       }
     } catch (e) {
-      log.w('INDEXER IS OFFLINE');
+      log.w('Indexer $endpoint is offline');
       indexerEndpoint = '';
       isLoadingIndexer = false;
       notifyListeners();
@@ -96,7 +98,7 @@ class DuniterIndexer with ChangeNotifier {
       }
 
       try {
-        final endpointPath = '${listIndexerEndpoints[i]}/v1/graphql';
+        final endpointPath = 'https://${listIndexerEndpoints[i]}/v1/graphql';
 
         final request = await client.postUrl(Uri.parse(endpointPath));
         final response = await request.close();
@@ -217,42 +219,24 @@ class DuniterIndexer with ChangeNotifier {
 
   Future<QueryResult> _execQuery(
       String query, Map<String, dynamic> variables) async {
-    final httpLink = HttpLink(
-      '$indexerEndpoint/v1/graphql',
-    );
-
-    final client = GraphQLClient(
-      cache: GraphQLCache(),
-      link: httpLink,
-    );
-
     final options = QueryOptions(document: gql(query), variables: variables);
 
     // 5GMyvKsTNk9wDBy9jwKaX6mhSzmFFtpdK9KNnmrLoSTSuJHv
 
-    return await client.query(options);
+    return await indexerClient.query(options);
   }
 
   Stream<QueryResult> subscribeHistoryIssued(String address) {
-    final wsLink = WebSocketLink(
-      '${indexerEndpoint.replaceFirst('https', 'wss')}/v1/graphql',
-    );
-
     final variables = <String, dynamic>{
       'address': address,
     };
 
-    final client = GraphQLClient(
-      cache: GraphQLCache(),
-      link: wsLink,
-    );
-
     final options = SubscriptionOptions(
       document: gql(subscribeHistoryIssuedQ),
       variables: variables,
     );
 
-    return client.subscribe(options);
+    return indexerClient.subscribe(options);
   }
 
   Map computeHistoryView(repository, String address) {

lib/providers/v2s_datapod.dart

@@ -11,19 +11,14 @@ import 'package:provider/provider.dart';
 import 'package:uuid/uuid.dart';
 
 class V2sDatapodProvider with ChangeNotifier {
+  late GraphQLClient datapodClient;
+
   Future<QueryResult> _execQuery(
       String query, Map<String, dynamic> variables) async {
-    final httpLink = HttpLink('$datapodEndpoint/v1/graphql');
-
-    final GraphQLClient client = GraphQLClient(
-      cache: GraphQLCache(),
-      link: httpLink,
-    );
-
     final QueryOptions options =
         QueryOptions(document: gql(query), variables: variables);
 
-    return await client.query(options);
+    return await datapodClient.query(options);
   }
 
   Future<bool> updateProfile(
@@ -174,34 +169,21 @@ class V2sDatapodProvider with ChangeNotifier {
   }
 
   Future<File> cacheAvatar(String address, String data) async {
-    final file = File('${avatarsCacheDirectory.path}/$address');
-    return await file.writeAsBytes(base64.decode(data));
+    final uuid = const Uuid().v4();
+    final tempFile = File('${avatarsCacheDirectory.path}/$uuid$address');
+    final targetFile = File('${avatarsCacheDirectory.path}/$address');
+
+    try {
+      // Write to a temporary file first to prevent data race
+      await tempFile.writeAsBytes(base64.decode(data));
+      log.d('Caching avatar of $address');
+      return await tempFile.rename(targetFile.path);
+    } catch (e) {
+      log.e("An error occurred while caching avatar: $e");
+      rethrow;
+    }
   }
 
-  // Future<File> cacheAvatar(String address, String data) async {
-  //   // Get the list of all files in the directory
-  //   final dir = Directory(avatarsCacheDirectory.path);
-  //   var filesList = dir.listSync().whereType<File>().toList();
-
-  //   // Sorting files by modified date, oldest first
-  //   filesList
-  //       .sort((a, b) => a.lastModifiedSync().compareTo(b.lastModifiedSync()));
-
-  //   // If there are more than 20 files, remove the oldest ones
-  //   while (filesList.length > 20) {
-  //     filesList.first.deleteSync();
-  //     filesList.removeAt(0);
-  //   }
-
-  //   // Write the new avatar file
-  //   final file = File('${avatarsCacheDirectory.path}/$address');
-  //   await file.writeAsBytes(base64.decode(data));
-
-  //   log.d('cache files: ${filesList.length}');
-
-  //   return file;
-  // }
-
   Image getAvatarLocal(String address) {
     final avatarFile = File('${avatarsCacheDirectory.path}/$address');
     return Image.file(

lib/screens/home.dart

@@ -20,6 +20,7 @@ import 'package:gecko/screens/myWallets/restore_chest.dart';
 import 'package:gecko/screens/onBoarding/1.dart';
 import 'package:gecko/widgets/drawer.dart';
 import 'package:gecko/widgets/buttons/home_buttons.dart';
+import 'package:graphql_flutter/graphql_flutter.dart';
 import 'package:hive_flutter/hive_flutter.dart';
 import 'package:provider/provider.dart';
 
@@ -76,7 +77,25 @@ class _HomeScreenState extends State<HomeScreen> {
         homeProvider.isWalletBoxInit = true;
         myWalletProvider.reload();
 
-        duniterIndexer.getValidIndexerEndpoint();
+        duniterIndexer.getValidIndexerEndpoint().then((validIndexerEndpoint) {
+          final wsLinkIndexer = WebSocketLink(
+            'wss://$validIndexerEndpoint/v1/graphql',
+          );
+
+          final wsLinkDatapod = WebSocketLink(
+            'wss://$datapodEndpoint/v1/graphql',
+          );
+
+          duniterIndexer.indexerClient = GraphQLClient(
+            cache: GraphQLCache(),
+            link: wsLinkIndexer,
+          );
+
+          datapod.datapodClient = GraphQLClient(
+            cache: GraphQLCache(),
+            link: wsLinkDatapod,
+          );
+        });
 
         await homeProvider.getValidEndpoints();
         if (configBox.get('isCacheChecked') == null) {
@@ -101,7 +120,6 @@ class _HomeScreenState extends State<HomeScreen> {
           }
         });
       }
-      // _duniterIndexer.checkIndexerEndpointBackground();
     });
     super.initState();
   }

lib/screens/myWallets/wallet_options.dart

@@ -86,7 +86,7 @@ class WalletOptions extends StatelessWidget {
                   ? duniterIndexer
                       .walletNameIndexer[walletOptions.address.text]!
                   : wallet.name!,
-              style: scaledTextStyle(fontSize: 18),
+              style: scaledTextStyle(fontSize: 19),
             );
           }),
           actions: [

lib/widgets/certs_list.dart

@@ -4,8 +4,10 @@ import 'package:gecko/globals.dart';
 import 'package:gecko/models/queries_indexer.dart';
 import 'package:gecko/models/scale_functions.dart';
 import 'package:gecko/models/widgets_keys.dart';
+import 'package:gecko/providers/duniter_indexer.dart';
 import 'package:gecko/widgets/cert_tile.dart';
 import 'package:graphql_flutter/graphql_flutter.dart';
+import 'package:provider/provider.dart';
 
 class CertsList extends StatelessWidget {
   const CertsList(
@@ -18,14 +20,11 @@ class CertsList extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final indexerProvider = Provider.of<DuniterIndexer>(context, listen: false);
     final screenHeight = MediaQuery.of(context).size.height;
     final appBarHeight = AppBar().preferredSize.height;
     final windowHeight = screenHeight - appBarHeight - (isTall ? 170 : 140);
 
-    final httpLink = HttpLink(
-      '$indexerEndpoint/v1/graphql',
-    );
-
     late String gertCertsReq;
     late String certFrom;
 
@@ -37,14 +36,8 @@ class CertsList extends StatelessWidget {
       certFrom = 'receiver';
     }
 
-    final client = ValueNotifier(
-      GraphQLClient(
-        cache: GraphQLCache(store: HiveStore()),
-        link: httpLink,
-      ),
-    );
     return GraphQLProvider(
-      client: client,
+      client: ValueNotifier(indexerProvider.indexerClient),
       child: Query(
         options: QueryOptions(
           document: gql(gertCertsReq),
@@ -53,7 +46,7 @@ class CertsList extends StatelessWidget {
           },
         ),
         builder: (QueryResult result, {fetchMore, refetch}) {
-          if (result.isLoading && result.data == null) {
+          if (result.isLoading || result.data == null) {
             return const Center(
               child: CircularProgressIndicator(),
             );

lib/widgets/datapod_avatar.dart

@@ -30,21 +30,10 @@ class DatapodAvatar extends StatelessWidget {
       );
     }
 
-    final httpLink = HttpLink(
-      '$datapodEndpoint/v1/graphql',
-    );
-
-    final client = ValueNotifier(
-      GraphQLClient(
-        cache: GraphQLCache(),
-        link: httpLink,
-      ),
-    );
-
     return ScaledSizedBox(
       width: size,
       child: GraphQLProvider(
-        client: client,
+        client: ValueNotifier(datapod.datapodClient),
         child: Query(
             options: QueryOptions(
               document: gql(getAvatarQ),
@@ -53,7 +42,7 @@ class DatapodAvatar extends StatelessWidget {
               },
             ),
             builder: (QueryResult result, {fetchMore, refetch}) {
-              if (result.isLoading) {
+              if (result.isLoading || result.data == null) {
                 return Center(
                   child: ClipOval(child: datapod.defaultAvatar(size)),
                 );

lib/widgets/history_query.dart

@@ -36,19 +36,8 @@ class HistoryQuery extends StatelessWidget {
       ]);
     }
 
-    final httpLink = HttpLink(
-      '$indexerEndpoint/v1/graphql',
-    );
-
-    final client = ValueNotifier(
-      GraphQLClient(
-        cache: GraphQLCache(),
-        link: httpLink,
-      ),
-    );
-
     return GraphQLProvider(
-      client: client,
+      client: ValueNotifier(duniterIndexer.indexerClient),
       child: Expanded(
           child: Column(
         mainAxisAlignment: MainAxisAlignment.start,

lib/widgets/history_view.dart

@@ -54,7 +54,8 @@ class HistoryView extends StatelessWidget {
               return Column(children: <Widget>[
                 if (isMigrationTime)
                   Padding(
-                    padding: EdgeInsets.symmetric(vertical: scaleSize(23)),
+                    padding: EdgeInsets.only(
+                        top: scaleSize(25), bottom: scaleSize(15)),
                     child: Row(
                       mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                       children: [
@@ -64,9 +65,9 @@ class HistoryView extends StatelessWidget {
                         Text(
                           'blockchainStart'.tr(),
                           style: scaledTextStyle(
-                              fontSize: 19,
+                              fontSize: 20,
                               color: Colors.blueAccent,
-                              fontWeight: FontWeight.w500),
+                              fontWeight: FontWeight.w400),
                         ),
                         Image(
                             image: const AssetImage('assets/party.png'),
@@ -83,7 +84,7 @@ class HistoryView extends StatelessWidget {
                     child: Text(
                       answer['dateDelimiter'],
                       style: scaledTextStyle(
-                          fontSize: 19,
+                          fontSize: 20,
                           color: orangeC,
                           fontWeight: FontWeight.w300),
                     ),
@@ -131,7 +132,7 @@ class HistoryView extends StatelessWidget {
                         Text(
                           'identityMigrated'.tr(),
                           style: scaledTextStyle(
-                              fontSize: 19,
+                              fontSize: 20,
                               color: Colors.green[700],
                               fontWeight: FontWeight.w500),
                         ),
@@ -155,10 +156,18 @@ class HistoryView extends StatelessWidget {
               Column(
                 children: <Widget>[
                   ScaledSizedBox(height: 15),
-                  Text("historyStart".tr(),
-                      textAlign: TextAlign.center,
-                      style: scaledTextStyle(fontSize: 20)),
-                  ScaledSizedBox(height: 15)
+                  Row(
+                    mainAxisAlignment: MainAxisAlignment.spaceEvenly,
+                    children: [
+                      Icon(Icons.blur_on_outlined, size: scaleSize(31)),
+                      Text("historyStart".tr(),
+                          textAlign: TextAlign.center,
+                          style: scaledTextStyle(
+                              fontSize: 20, fontWeight: FontWeight.w300)),
+                      Icon(Icons.blur_on_outlined, size: scaleSize(31)),
+                    ],
+                  ),
+                  ScaledSizedBox(height: 30)
                 ],
               )
           ]);

lib/widgets/name_by_address.dart

@@ -6,6 +6,7 @@ import 'package:gecko/models/queries_indexer.dart';
 import 'package:gecko/models/scale_functions.dart';
 import 'package:gecko/models/wallet_data.dart';
 import 'package:gecko/providers/duniter_indexer.dart';
+import 'package:gecko/widgets/commons/loading.dart';
 import 'package:gecko/widgets/wallet_name.dart';
 import 'package:graphql_flutter/graphql_flutter.dart';
 import 'package:provider/provider.dart';
@@ -34,22 +35,8 @@ class NameByAddress extends StatelessWidget {
       return WalletName(wallet: wallet, size: size, color: color);
     }
 
-    // if (g1WalletsBox.get(wallet.address)?.username != null) {
-    //   return Text(g1WalletsBox.get(wallet.address)!.username!);
-    // }
-
-    final httpLink = HttpLink(
-      '$indexerEndpoint/v1/graphql',
-    );
-
-    final client = ValueNotifier(
-      GraphQLClient(
-        cache: GraphQLCache(store: HiveStore()),
-        link: httpLink,
-      ),
-    );
     return GraphQLProvider(
-      client: client,
+      client: ValueNotifier(duniterIndexer.indexerClient),
       child: Query(
           options: QueryOptions(
             document: gql(getNameByAddressQ),
@@ -66,7 +53,7 @@ class NameByAddress extends StatelessWidget {
             }
 
             if (result.isLoading) {
-              return const Text('Loading');
+              return const Loading();
             }
 
             duniterIndexer.walletNameIndexer[wallet.address] =

lib/widgets/search_identity_query.dart

@@ -29,19 +29,8 @@ class SearchIdentityQuery extends StatelessWidget {
       return Text('noResult'.tr());
     }
 
-    final httpLink = HttpLink(
-      '$indexerEndpoint/v1/graphql',
-    );
-
-    final client = ValueNotifier(
-      GraphQLClient(
-        cache: GraphQLCache(
-            store: HiveStore()),
-        link: httpLink,
-      ),
-    );
     return GraphQLProvider(
-      client: client,
+      client: ValueNotifier(duniterIndexer.indexerClient),
       child: Query(
           options: QueryOptions(
             document: gql(searchAddressByNameQ),

lib/widgets/transaction_in_progress_tile.dart

@@ -108,7 +108,7 @@ class _TransactionInProgressTuleState extends State<TransactionInProgressTule> {
                 Text(
                   'Transaction en cours',
                   style: scaledTextStyle(
-                      fontSize: 19,
+                      fontSize: 20,
                       color: Colors.blueAccent,
                       fontWeight: FontWeight.w400),
                 ),

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: 0.1.3+64
+version: 0.1.4+65
 
 environment:
   sdk: ">=2.12.0 <3.0.0"