allow renaming of feeds

Frameworks/Account/FeedWrangler/FeedWranglerAPICaller.swift

@@ -71,4 +71,31 @@ final class FeedWranglerAPICaller: NSObject {
 		}
 	}
 	
+	func renameSubscription(feedID: String, newName: String, completion: @escaping (Result<Void, Error>) -> Void) {
+		guard var components = URLComponents(url: FeedWranglerConfig.clientURL.appendingPathComponent("subscriptions/rename_feed"), resolvingAgainstBaseURL: false) else {
+			completion(.failure(TransportError.noURL))
+			return
+		}
+		components.queryItems = [
+			URLQueryItem(name: "feed_id", value: feedID),
+			URLQueryItem(name: "feed_name", value: newName),
+		]
+		
+		guard let url = components.url else {
+			completion(.failure(TransportError.noURL))
+			return
+		}
+		
+		let request = URLRequest(url: url, credentials: credentials)
+		
+		transport.send(request: request, resultType: FeedWranglerSubscriptionsRequest.self) { result in
+			switch result {
+			case .success:
+				completion(.success(()))
+
+			case .failure(let error):
+				completion(.failure(error))
+			}
+		}
+	}
 }

Frameworks/Account/FeedWrangler/FeedWranglerAccountDelegate.swift

@@ -141,7 +141,28 @@ final class FeedWranglerAccountDelegate: AccountDelegate {
 	}
 	
 	func renameFeed(for account: Account, with feed: Feed, to name: String, completion: @escaping (Result<Void, Error>) -> Void) {
-		fatalError()
+		refreshProgress.addToNumberOfTasksAndRemaining(2)
+		
+		self.refreshCredentials(for: account) {
+			self.refreshProgress.completeTask()
+			self.caller.renameSubscription(feedID: feed.feedID, newName: name) { result in
+				self.refreshProgress.completeTask()
+				
+				switch result {
+				case .success:
+					DispatchQueue.main.async {
+						feed.editedName = name
+						completion(.success(()))
+					}
+					
+				case .failure(let error):
+					DispatchQueue.main.async {
+						let wrappedError = AccountError.wrappedError(error: error, account: account)
+						completion(.failure(wrappedError))
+					}
+				}
+			}
+		}
 	}
 	
 	func addFeed(for account: Account, with: Feed, to container: Container, completion: @escaping (Result<Void, Error>) -> Void) {
@@ -199,6 +220,7 @@ private extension FeedWranglerAccountDelegate {
 			
 			if let feed = account.existingFeed(withFeedID: subscriptionId) {
 				feed.name = subscription.title
+				feed.editedName = nil
 				feed.homePageURL = subscription.siteURL
 				feed.subscriptionID = nil // MARK: TODO What should this be?
 			} else {