342 lines
10 KiB
Swift
342 lines
10 KiB
Swift
//
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// LocalAccountDelegate.swift
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// NetNewsWire
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//
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// Created by Brent Simmons on 9/16/17.
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// Copyright © 2017 Ranchero Software, LLC. All rights reserved.
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//
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import Foundation
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import os.log
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import RSCore
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import RSParser
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import Articles
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import ArticlesDatabase
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import RSWeb
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import Secrets
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public enum LocalAccountDelegateError: String, Error {
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case invalidParameter = "An invalid parameter was used."
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}
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final class LocalAccountDelegate: AccountDelegate {
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private var log = OSLog(subsystem: Bundle.main.bundleIdentifier!, category: "LocalAccount")
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weak var account: Account?
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private lazy var refresher: LocalAccountRefresher? = {
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let refresher = LocalAccountRefresher()
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refresher.delegate = self
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return refresher
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}()
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let behaviors: AccountBehaviors = []
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let isOPMLImportInProgress = false
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let server: String? = nil
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var credentials: Credentials?
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var accountMetadata: AccountMetadata?
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let refreshProgress = DownloadProgress(numberOfTasks: 0)
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func receiveRemoteNotification(for account: Account, userInfo: [AnyHashable : Any], completion: @escaping () -> Void) {
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completion()
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}
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func refreshAll(for account: Account, completion: @escaping (Result<Void, Error>) -> Void) {
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guard refreshProgress.isComplete else {
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completion(.success(()))
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return
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}
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var refresherWebFeeds = Set<WebFeed>()
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let webFeeds = account.flattenedWebFeeds()
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let group = DispatchGroup()
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for webFeed in webFeeds {
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if let components = URLComponents(string: webFeed.url), let feedProvider = FeedProviderManager.shared.best(for: components) {
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refreshProgress.addToNumberOfTasksAndRemaining(1)
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group.enter()
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feedProvider.refresh(webFeed) { result in
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switch result {
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case .success(let parsedItems):
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account.update(webFeed.webFeedID, with: parsedItems) { _ in
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self.refreshProgress.completeTask()
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group.leave()
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}
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case .failure(let error):
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os_log(.error, log: self.log, "Feed Provider refresh error: %@.", error.localizedDescription)
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self.refreshProgress.completeTask()
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group.leave()
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}
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}
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} else {
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refresherWebFeeds.insert(webFeed)
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}
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}
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refreshProgress.addToNumberOfTasksAndRemaining(refresherWebFeeds.count)
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group.enter()
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refresher?.refreshFeeds(refresherWebFeeds) { _, _, _ in
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group.leave()
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}
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group.notify(queue: DispatchQueue.main) {
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account.metadata.lastArticleFetchEndTime = Date()
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completion(.success(()))
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}
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}
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func sendArticleStatus(for account: Account, completion: @escaping ((Result<Void, Error>) -> Void)) {
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completion(.success(()))
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}
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func refreshArticleStatus(for account: Account, completion: @escaping ((Result<Void, Error>) -> Void)) {
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completion(.success(()))
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}
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func importOPML(for account:Account, opmlFile: URL, completion: @escaping (Result<Void, Error>) -> Void) {
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var fileData: Data?
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do {
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fileData = try Data(contentsOf: opmlFile)
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} catch {
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completion(.failure(error))
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return
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}
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guard let opmlData = fileData else {
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completion(.success(()))
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return
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}
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let parserData = ParserData(url: opmlFile.absoluteString, data: opmlData)
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var opmlDocument: RSOPMLDocument?
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do {
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opmlDocument = try RSOPMLParser.parseOPML(with: parserData)
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} catch {
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completion(.failure(error))
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return
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}
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guard let loadDocument = opmlDocument else {
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completion(.success(()))
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return
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}
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guard let children = loadDocument.children else {
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return
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}
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BatchUpdate.shared.perform {
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account.loadOPMLItems(children)
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}
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completion(.success(()))
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}
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func createWebFeed(for account: Account, url urlString: String, name: String?, container: Container, completion: @escaping (Result<WebFeed, Error>) -> Void) {
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guard let url = URL(string: urlString), let urlComponents = URLComponents(url: url, resolvingAgainstBaseURL: false) else {
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completion(.failure(LocalAccountDelegateError.invalidParameter))
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return
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}
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// Username should be part of the URL on new feed adds
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if let feedProvider = FeedProviderManager.shared.best(for: urlComponents) {
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createProviderWebFeed(for: account, urlComponents: urlComponents, editedName: name, container: container, feedProvider: feedProvider, completion: completion)
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} else {
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createRSSWebFeed(for: account, url: url, editedName: name, container: container, completion: completion)
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}
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}
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func renameWebFeed(for account: Account, with feed: WebFeed, to name: String, completion: @escaping (Result<Void, Error>) -> Void) {
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feed.editedName = name
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completion(.success(()))
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}
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func removeWebFeed(for account: Account, with feed: WebFeed, from container: Container, completion: @escaping (Result<Void, Error>) -> Void) {
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container.removeWebFeed(feed)
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completion(.success(()))
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}
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func moveWebFeed(for account: Account, with feed: WebFeed, from: Container, to: Container, completion: @escaping (Result<Void, Error>) -> Void) {
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from.removeWebFeed(feed)
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to.addWebFeed(feed)
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completion(.success(()))
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}
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func addWebFeed(for account: Account, with feed: WebFeed, to container: Container, completion: @escaping (Result<Void, Error>) -> Void) {
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container.addWebFeed(feed)
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completion(.success(()))
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}
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func restoreWebFeed(for account: Account, feed: WebFeed, container: Container, completion: @escaping (Result<Void, Error>) -> Void) {
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container.addWebFeed(feed)
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completion(.success(()))
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}
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func createFolder(for account: Account, name: String, completion: @escaping (Result<Folder, Error>) -> Void) {
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if let folder = account.ensureFolder(with: name) {
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completion(.success(folder))
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} else {
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completion(.failure(FeedbinAccountDelegateError.invalidParameter))
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}
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}
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func renameFolder(for account: Account, with folder: Folder, to name: String, completion: @escaping (Result<Void, Error>) -> Void) {
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folder.name = name
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completion(.success(()))
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}
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func removeFolder(for account: Account, with folder: Folder, completion: @escaping (Result<Void, Error>) -> Void) {
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account.removeFolder(folder)
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completion(.success(()))
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}
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func restoreFolder(for account: Account, folder: Folder, completion: @escaping (Result<Void, Error>) -> Void) {
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account.addFolder(folder)
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completion(.success(()))
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}
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func markArticles(for account: Account, articles: Set<Article>, statusKey: ArticleStatus.Key, flag: Bool) -> Set<Article>? {
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return try? account.update(articles, statusKey: statusKey, flag: flag)
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}
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func accountDidInitialize(_ account: Account) {
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self.account = account
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}
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func accountWillBeDeleted(_ account: Account) {
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}
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static func validateCredentials(transport: Transport, credentials: Credentials, endpoint: URL? = nil, completion: (Result<Credentials?, Error>) -> Void) {
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return completion(.success(nil))
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}
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// MARK: Suspend and Resume (for iOS)
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func suspendNetwork() {
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refresher?.suspend()
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}
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func suspendDatabase() {
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// Nothing to do
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}
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func resume() {
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refresher?.resume()
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}
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}
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extension LocalAccountDelegate: LocalAccountRefresherDelegate {
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func localAccountRefresher(_ refresher: LocalAccountRefresher, requestCompletedFor: WebFeed) {
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refreshProgress.completeTask()
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}
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func localAccountRefresherDidFinish(_ refresher: LocalAccountRefresher) {
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self.refreshProgress.clear()
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}
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}
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private extension LocalAccountDelegate {
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func createProviderWebFeed(for account: Account, urlComponents: URLComponents, editedName: String?, container: Container, feedProvider: FeedProvider, completion: @escaping (Result<WebFeed, Error>) -> Void) {
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refreshProgress.addToNumberOfTasksAndRemaining(2)
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feedProvider.assignName(urlComponents) { result in
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self.refreshProgress.completeTask()
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switch result {
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case .success(let name):
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guard let urlString = urlComponents.url?.absoluteString else {
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completion(.failure(AccountError.createErrorNotFound))
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return
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}
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let feed = account.createWebFeed(with: name, url: urlString, webFeedID: urlString, homePageURL: nil)
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feed.editedName = editedName
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container.addWebFeed(feed)
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feedProvider.refresh(feed) { result in
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self.refreshProgress.completeTask()
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switch result {
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case .success(let parsedItems):
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account.update(urlString, with: parsedItems) { _ in
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completion(.success(feed))
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}
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case .failure:
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completion(.failure(AccountError.createErrorNotFound))
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}
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}
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case .failure(let error):
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completion(.failure(error))
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}
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}
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}
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func createRSSWebFeed(for account: Account, url: URL, editedName: String?, container: Container, completion: @escaping (Result<WebFeed, Error>) -> Void) {
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// We need to use a batch update here because we need to assign add the feed to the
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// container before the name has been downloaded. This will put it in the sidebar
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// with an Untitled name if we don't delay it being added to the sidebar.
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BatchUpdate.shared.start()
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refreshProgress.addToNumberOfTasksAndRemaining(1)
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FeedFinder.find(url: url) { result in
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switch result {
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case .success(let feedSpecifiers):
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guard let bestFeedSpecifier = FeedSpecifier.bestFeed(in: feedSpecifiers),
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let url = URL(string: bestFeedSpecifier.urlString) else {
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self.refreshProgress.completeTask()
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BatchUpdate.shared.end()
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completion(.failure(AccountError.createErrorNotFound))
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return
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}
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if account.hasWebFeed(withURL: bestFeedSpecifier.urlString) {
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self.refreshProgress.completeTask()
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BatchUpdate.shared.end()
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completion(.failure(AccountError.createErrorAlreadySubscribed))
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return
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}
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let feed = account.createWebFeed(with: nil, url: url.absoluteString, webFeedID: url.absoluteString, homePageURL: nil)
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feed.editedName = editedName
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container.addWebFeed(feed)
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InitialFeedDownloader.download(url) { parsedFeed in
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self.refreshProgress.completeTask()
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if let parsedFeed = parsedFeed {
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account.update(feed, with: parsedFeed, {_ in
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BatchUpdate.shared.end()
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completion(.success(feed))
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})
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} else {
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BatchUpdate.shared.end()
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completion(.failure(AccountError.createErrorNotFound))
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}
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}
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case .failure:
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BatchUpdate.shared.end()
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self.refreshProgress.completeTask()
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completion(.failure(AccountError.createErrorNotFound))
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}
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}
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}
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}
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