Delegate article marking functionality to the account delegate

Frameworks/Account/Account.swift

@@ -305,18 +305,7 @@ public final class Account: DisplayNameProvider, UnreadCountProvider, Container,
 	}
 	
 	public func markArticles(_ articles: Set<Article>, statusKey: ArticleStatus.Key, flag: Bool) -> Set<Article>? {
-
+		return delegate.markArticles(for: self, articles: articles, statusKey: statusKey, flag: flag)
-		// Returns set of Articles whose statuses did change.
-
-		guard let updatedStatuses = database.mark(articles, statusKey: statusKey, flag: flag) else {
-			return nil
-		}
-		
-		let updatedArticleIDs = updatedStatuses.articleIDs()
-		let updatedArticles = Set(articles.filter{ updatedArticleIDs.contains($0.articleID) })
-        
-        noteStatusesForArticlesDidChange(updatedArticles)
-		return updatedArticles
 	}
 
 	@discardableResult
@@ -617,6 +606,22 @@ public final class Account: DisplayNameProvider, UnreadCountProvider, Container,
 		
 	}
 
+	func update(_ articles: Set<Article>, statusKey: ArticleStatus.Key, flag: Bool) -> Set<Article>? {
+		
+		// Returns set of Articles whose statuses did change.
+		
+		guard let updatedStatuses = database.mark(articles, statusKey: statusKey, flag: flag) else {
+			return nil
+		}
+		
+		let updatedArticleIDs = updatedStatuses.articleIDs()
+		let updatedArticles = Set(articles.filter{ updatedArticleIDs.contains($0.articleID) })
+		
+		noteStatusesForArticlesDidChange(updatedArticles)
+		return updatedArticles
+		
+	}
+
 	func ensureStatuses(_ articleIDs: Set<String>, _ statusKey: ArticleStatus.Key, _ flag: Bool) {
 		database.ensureStatuses(articleIDs, statusKey, flag)
 	}

Frameworks/Account/AccountDelegate.swift

@@ -7,6 +7,7 @@
 //
 
 import Foundation
+import Articles
 import RSWeb
 
 protocol AccountDelegate {
@@ -35,6 +36,8 @@ protocol AccountDelegate {
 	func restoreFeed(for account: Account, feed: Feed, folder: Folder?, completion: @escaping (Result<Void, Error>) -> Void)
 	func restoreFolder(for account: Account, folder: Folder, completion: @escaping (Result<Void, Error>) -> Void)
 
+	func markArticles(for account: Account, articles: Set<Article>, statusKey: ArticleStatus.Key, flag: Bool) -> Set<Article>?
+
 	// Called at the end of account’s init method.
 	func accountDidInitialize(_ account: Account)
 

Frameworks/Account/Feedbin/FeedbinAccountDelegate.swift

@@ -12,6 +12,7 @@ import AppKit
 import UIKit
 import RSCore
 #endif
+import Articles
 import RSCore
 import RSParser
 import RSWeb
@@ -400,6 +401,10 @@ final class FeedbinAccountDelegate: AccountDelegate {
 		
 	}
 	
+	func markArticles(for account: Account, articles: Set<Article>, statusKey: ArticleStatus.Key, flag: Bool) -> Set<Article>? {
+		return account.update(articles, statusKey: statusKey, flag: flag)
+	}
+	
 	func accountDidInitialize(_ account: Account) {
 		credentials = try? account.retrieveBasicCredentials()
 		accountMetadata = account.metadata

Frameworks/Account/LocalAccount/LocalAccountDelegate.swift

@@ -8,6 +8,7 @@
 
 import Foundation
 import RSParser
+import Articles
 import RSWeb
 
 public enum LocalAccountDelegateError: String, Error {
@@ -160,6 +161,10 @@ final class LocalAccountDelegate: AccountDelegate {
 		completion(.success(()))
 	}
 
+	func markArticles(for account: Account, articles: Set<Article>, statusKey: ArticleStatus.Key, flag: Bool) -> Set<Article>? {
+		return account.update(articles, statusKey: statusKey, flag: flag)
+	}
+
 	func accountDidInitialize(_ account: Account) {
 	}