TF-82 Discard email drafts

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

@@ -35,5 +35,7 @@ abstract class EmailDataSource {
     MarkStarAction markStarAction
   );
 
-  Future<bool> saveEmailAsDrafts(AccountId accountId, Email email);
+  Future<Email?> saveEmailAsDrafts(AccountId accountId, Email email);
+
+  Future<bool> removeEmailDrafts(AccountId accountId, EmailId emailId);
 }

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

@@ -88,11 +88,20 @@ class EmailDataSourceImpl extends EmailDataSource {
   }
 
   @override
-  Future<bool> saveEmailAsDrafts(AccountId accountId, Email email) {
+  Future<Email?> saveEmailAsDrafts(AccountId accountId, Email email) {
     return Future.sync(() async {
       return await emailAPI.saveEmailAsDrafts(accountId, email);
     }).catchError((error) {
       throw error;
     });
   }
+
+  @override
+  Future<bool> removeEmailDrafts(AccountId accountId, EmailId emailId) {
+    return Future.sync(() async {
+      return await emailAPI.removeEmailDrafts(accountId, emailId);
+    }).catchError((error) {
+      throw error;
+    });
+  }
 }

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

@@ -254,7 +254,7 @@ class EmailAPI {
     });
   }
 
-  Future<bool> saveEmailAsDrafts(AccountId accountId, Email email) async {
+  Future<Email?> saveEmailAsDrafts(AccountId accountId, Email email) async {
     final setEmailMethod = SetEmailMethod(accountId)
       ..addCreate(email.id.id, email);
 
@@ -272,7 +272,31 @@ class EmailAPI {
         SetEmailResponse.deserialize);
 
     return Future.sync(() async {
-     return setEmailResponse?.created?[email.id.id] != null;
+      return setEmailResponse?.created?[email.id.id];
+    }).catchError((error) {
+      throw error;
+    });
+  }
+
+  Future<bool> removeEmailDrafts(AccountId accountId, EmailId emailId) async {
+    final setEmailMethod = SetEmailMethod(accountId)
+      ..addDestroy({emailId.id});
+
+    final requestBuilder = JmapRequestBuilder(_httpClient, ProcessingInvocation());
+
+    final setEmailInvocation = requestBuilder.invocation(setEmailMethod);
+
+    final response = await (requestBuilder
+        ..usings(setEmailMethod.requiredCapabilities))
+      .build()
+      .execute();
+
+    final setEmailResponse = response.parse<SetEmailResponse>(
+        setEmailInvocation.methodCallId,
+        SetEmailResponse.deserialize);
+
+    return Future.sync(() async {
+      return setEmailResponse?.destroyed?.contains(emailId.id) == true;
     }).catchError((error) {
       throw error;
     });

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

@@ -90,7 +90,12 @@ class EmailRepositoryImpl extends EmailRepository {
   }
 
   @override
-  Future<bool> saveEmailAsDrafts(AccountId accountId, Email email) {
+  Future<Email?> saveEmailAsDrafts(AccountId accountId, Email email) {
     return emailDataSource.saveEmailAsDrafts(accountId, email);
   }
+
+  @override
+  Future<bool> removeEmailDrafts(AccountId accountId, EmailId emailId) {
+    return emailDataSource.removeEmailDrafts(accountId, emailId);
+  }
 }