fix: double delimters in activity view

lib/providers/duniter_indexer.dart

@@ -253,7 +253,7 @@ Future<QueryResult> _execQuery(
   return await client.query(options);
 }
 
-Map computeHistoryView(repository, lastDateDelimiter, isDouble) {
+Map computeHistoryView(repository) {
   bool isTody = false;
   bool isYesterday = false;
   bool isThisWeek = false;
@@ -281,27 +281,26 @@ Map computeHistoryView(repository, lastDateDelimiter, isDouble) {
   final yesterdayDate = DateTime(now.year, now.month, now.day - 1);
 
   if (transactionDate == todayDate && !isTody) {
-    dateDelimiter = lastDateDelimiter = "today".tr();
+    dateDelimiter = "today".tr();
     isTody = true;
   } else if (transactionDate == yesterdayDate && !isYesterday) {
-    dateDelimiter = lastDateDelimiter = "yesterday".tr();
+    dateDelimiter = "yesterday".tr();
     isYesterday = true;
   } else if (weekNumber(date) == weekNumber(now) &&
       date.year == now.year &&
       transactionDate != yesterdayDate &&
       transactionDate != todayDate &&
       !isThisWeek) {
-    dateDelimiter = lastDateDelimiter = "thisWeek".tr();
+    dateDelimiter = "thisWeek".tr();
     isThisWeek = true;
-  } else if (lastDateDelimiter != "${monthsInYear[date.month]} ${date.year}" &&
+  } else if (dateDelimiter != "${monthsInYear[date.month]} ${date.year}" &&
       transactionDate != todayDate &&
       transactionDate != yesterdayDate &&
       !(weekNumber(date) == weekNumber(now) && date.year == now.year)) {
     if (date.year == now.year) {
-      dateDelimiter = lastDateDelimiter = monthsInYear[date.month];
+      dateDelimiter = monthsInYear[date.month];
     } else {
-      dateDelimiter =
-          lastDateDelimiter = "${monthsInYear[date.month]} ${date.year}";
+      dateDelimiter = "${monthsInYear[date.month]} ${date.year}";
     }
   } else {
     isDelimiter = false;

lib/widgets/history_query.dart

@@ -141,9 +141,8 @@ class HistoryQuery extends StatelessWidget {
     final duniterIndexer = Provider.of<DuniterIndexer>(context, listen: false);
     int keyID = 0;
     const double avatarSize = 200;
-    String? lastDateDelimiter;
-    bool? isDouble;
     bool isMigrationPassed = false;
+    List<String> pastDelimiters = [];
 
     return duniterIndexer.transBC == null
         ? Column(children: <Widget>[
@@ -156,11 +155,9 @@ class HistoryQuery extends StatelessWidget {
         : Column(children: <Widget>[
             Column(
                 children: duniterIndexer.transBC!.map((repository) {
-              final answer =
-                  computeHistoryView(repository, lastDateDelimiter, isDouble);
-              isDouble = lastDateDelimiter == answer['dateDelimiter'] ||
-                  answer['dateDelimiter'] == '';
-              lastDateDelimiter = answer['dateDelimiter'];
+              final answer = computeHistoryView(repository);
+              pastDelimiters.add(answer['dateDelimiter']);
+
               bool isMigrationTime = false;
               if (answer['isMigrationTime'] && !isMigrationPassed) {
                 isMigrationPassed = true;
@@ -190,7 +187,12 @@ class HistoryQuery extends StatelessWidget {
                       ],
                     ),
                   ),
-                if (!isDouble!)
+                // if ((countsDelimiter[answer['dateDelimiter']] ?? 0) >= 1)
+
+                if (pastDelimiters.length == 1 ||
+                    pastDelimiters.length >= 2 &&
+                        !(pastDelimiters[pastDelimiters.length - 2] ==
+                            answer['dateDelimiter']))
                   Padding(
                     padding: const EdgeInsets.symmetric(vertical: 30),
                     child: Text(