From f8c8fc5f3424193e999af78f326749c602ef676a Mon Sep 17 00:00:00 2001
From: Brent Simmons <brent@ranchero.com>
Date: Mon, 12 Aug 2019 09:43:29 -0700
Subject: [PATCH] Fix crashing bug with marking all as read via contextual
 menu. Implement feed.fetchUnreadArticles.

---
 Frameworks/Account/ArticleFetcher.swift | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/Frameworks/Account/ArticleFetcher.swift b/Frameworks/Account/ArticleFetcher.swift
index a4f6b3978..4a5987a56 100644
--- a/Frameworks/Account/ArticleFetcher.swift
+++ b/Frameworks/Account/ArticleFetcher.swift
@@ -33,11 +33,16 @@ extension Feed: ArticleFetcher {
 	}
 
 	public func fetchUnreadArticles() -> Set<Article> {
-		preconditionFailure("feed.fetchUnreadArticles is unused.")
+		return fetchArticles().unreadArticles()
 	}
 
 	public func fetchUnreadArticlesAsync(_ callback: @escaping ArticleSetBlock) {
-		preconditionFailure("feed.fetchUnreadArticlesAsync is unused.")
+		guard let account = account else {
+			assertionFailure("Expected feed.account, but got nil.")
+			callback(Set<Article>())
+			return
+		}
+		account.fetchArticlesAsync(.feed(self)) { callback($0.unreadArticles()) }
 	}
 }