TF-1718 Check List-Unsubscribe in header of email & parsing to EmailUnsubscribe

(cherry picked from commit 9dc046a951e5198461178860c8ebe4bedff9062f)

lib/features/email/presentation/utils/email_utils.dart

@@ -1,8 +1,11 @@
 
+import 'package:collection/collection.dart';
+import 'package:core/utils/app_logger.dart';
 import 'package:jmap_dart_client/jmap/account_id.dart';
 import 'package:jmap_dart_client/jmap/core/capability/capability_identifier.dart';
 import 'package:jmap_dart_client/jmap/core/properties/properties.dart';
 import 'package:jmap_dart_client/jmap/core/session/session.dart';
+import 'package:tmail_ui_user/features/email/presentation/model/email_unsubscribe.dart';
 import 'package:tmail_ui_user/features/thread/domain/constants/thread_constants.dart';
 import 'package:tmail_ui_user/main/error/capability_validator.dart';
 
@@ -15,4 +18,35 @@ class EmailUtils {
       return ThreadConstants.propertiesDefault;
     }
   }
+
+  static EmailUnsubscribe? parsingUnsubscribe(String listUnsubscribe) {
+    if (listUnsubscribe.isEmpty) {
+      return null;
+    }
+
+    final regExpMailtoLinks = RegExp(r'mailto:([^>,]*)');
+    final allMatchesMailtoLinks = regExpMailtoLinks.allMatches(listUnsubscribe);
+    final listMailtoLinks = allMatchesMailtoLinks
+      .map((match) => match.group(0))
+      .whereNotNull()
+      .toList();
+    log('EmailUtils::parsingUnsubscribe:listMailtoLinks: $listMailtoLinks');
+
+    final regExpHttpLinks = RegExp(r'http([^>,]*)');
+    final allMatchesHttpLinks = regExpHttpLinks.allMatches(listUnsubscribe);
+    final listHttpLinks = allMatchesHttpLinks
+      .map((match) => match.group(0))
+      .whereNotNull()
+      .toList();
+    log('EmailUtils::parsingUnsubscribe:listHttpLinks: $listHttpLinks');
+
+    if (listMailtoLinks.isNotEmpty || listHttpLinks.isNotEmpty) {
+      return EmailUnsubscribe(
+        httpLinks: listHttpLinks,
+        mailtoLinks: listMailtoLinks
+      );
+    } else {
+      return null;
+    }
+  }
 }