TF-239 Delete single email permanently

lib/features/email/data/datasource/email_datasource.dart

@@ -52,5 +52,7 @@ abstract class EmailDataSource {
 
   Future<Email?> updateEmailDrafts(AccountId accountId, Email newEmail, EmailId oldEmailId);
 
-  Future<List<EmailId>> deleteMultipleEmailPermanently(Session session, AccountId accountId, List<EmailId> emailIds);
+  Future<List<EmailId>> deleteMultipleEmailsPermanently(Session session, AccountId accountId, List<EmailId> emailIds);
+
+  Future<bool> deleteEmailPermanently(AccountId accountId, EmailId emailId);
 }

lib/features/email/data/datasource_impl/email_datasource_impl.dart

@@ -135,9 +135,18 @@ class EmailDataSourceImpl extends EmailDataSource {
   }
 
   @override
-  Future<List<EmailId>> deleteMultipleEmailPermanently(Session session, AccountId accountId, List<EmailId> emailIds) {
+  Future<List<EmailId>> deleteMultipleEmailsPermanently(Session session, AccountId accountId, List<EmailId> emailIds) {
     return Future.sync(() async {
-      return await emailAPI.deleteMultipleEmailPermanently(session, accountId, emailIds);
+      return await emailAPI.deleteMultipleEmailsPermanently(session, accountId, emailIds);
+    }).catchError((error) {
+      throw error;
+    });
+  }
+
+  @override
+  Future<bool> deleteEmailPermanently(AccountId accountId, EmailId emailId) {
+    return Future.sync(() async {
+      return await emailAPI.deleteEmailPermanently(accountId, emailId);
     }).catchError((error) {
       throw error;
     });

lib/features/email/data/network/email_api.dart

@@ -386,7 +386,7 @@ class EmailAPI {
     });
   }
 
-  Future<List<EmailId>> deleteMultipleEmailPermanently(Session session, AccountId accountId, List<EmailId> emailIds) async {
+  Future<List<EmailId>> deleteMultipleEmailsPermanently(Session session, AccountId accountId, List<EmailId> emailIds) async {
     requireCapability(session, [CapabilityIdentifier.jmapCore, CapabilityIdentifier.jmapMail]);
 
     final coreCapability = (session.capabilities[CapabilityIdentifier.jmapCore] as CoreCapability);
@@ -430,4 +430,23 @@ class EmailAPI {
 
     return listEmailResult;
   }
+
+  Future<bool> deleteEmailPermanently(AccountId accountId, EmailId emailId) async {
+    final requestBuilder = JmapRequestBuilder(_httpClient, ProcessingInvocation());
+    final setEmailMethod =  SetEmailMethod(accountId)
+      ..addDestroy(Set.of([emailId.id]));
+
+    final setEmailInvocation = requestBuilder.invocation(setEmailMethod);
+
+    final response = await (requestBuilder
+        ..usings(setEmailMethod.requiredCapabilities))
+      .build()
+      .execute();
+
+    final setEmailResponse = response.parse<SetEmailResponse>(
+        setEmailInvocation.methodCallId,
+        SetEmailResponse.deserialize);
+
+    return setEmailResponse?.destroyed?.contains(emailId.id) == true;
+  }
 }

lib/features/email/data/repository/email_repository_impl.dart

@@ -117,7 +117,12 @@ class EmailRepositoryImpl extends EmailRepository {
   }
 
   @override
-  Future<List<EmailId>> deleteMultipleEmailPermanently(Session session, AccountId accountId, List<EmailId> emailIds) {
-    return emailDataSource.deleteMultipleEmailPermanently(session, accountId, emailIds);
+  Future<List<EmailId>> deleteMultipleEmailsPermanently(Session session, AccountId accountId, List<EmailId> emailIds) {
+    return emailDataSource.deleteMultipleEmailsPermanently(session, accountId, emailIds);
+  }
+
+  @override
+  Future<bool> deleteEmailPermanently(AccountId accountId, EmailId emailId) {
+    return emailDataSource.deleteEmailPermanently(accountId, emailId);
   }
 }