new chat widget

lib/chat/views/date_formatter.dart

@@ -0,0 +1,41 @@
+import 'package:flutter_translate/flutter_translate.dart';
+import 'package:intl/intl.dart';
+
+class DateFormatter {
+  DateFormatter();
+
+  String chatDateTimeFormat(DateTime dateTime) {
+    final now = DateTime.now();
+
+    final justNow = now.subtract(const Duration(minutes: 1));
+
+    final localDateTime = dateTime.toLocal();
+
+    if (!localDateTime.difference(justNow).isNegative) {
+      return translate('date_formatter.just_now');
+    }
+
+    final roughTimeString = DateFormat.jm().format(dateTime);
+
+    if (localDateTime.day == now.day &&
+        localDateTime.month == now.month &&
+        localDateTime.year == now.year) {
+      return roughTimeString;
+    }
+
+    final yesterday = now.subtract(const Duration(days: 1));
+
+    if (localDateTime.day == yesterday.day &&
+        localDateTime.month == now.month &&
+        localDateTime.year == now.year) {
+      return translate('date_formatter.yesterday');
+    }
+
+    if (now.difference(localDateTime).inDays < 4) {
+      final weekday = DateFormat(DateFormat.WEEKDAY).format(localDateTime);
+
+      return '$weekday, $roughTimeString';
+    }
+    return '${DateFormat.yMd().format(dateTime)}, $roughTimeString';
+  }
+}