NetNewsWire/Frameworks/Account/ReaderAPI/ReaderAPIAccountDelegate.swift

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//
// ReaderAPIAccountDelegate.swift
// Account
//
2019-06-19 13:56:25 +02:00
// Created by Jeremy Beker on 5/28/19.
// Copyright © 2019 Ranchero Software, LLC. All rights reserved.
//
import Articles
import RSCore
import RSParser
import RSWeb
import SyncDatabase
import os.log
public enum ReaderAPIAccountDelegateError: String, Error {
case invalidParameter = "There was an invalid parameter passed."
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case invalidResponse = "There was an invalid response from the server."
}
final class ReaderAPIAccountDelegate: AccountDelegate {
private let database: SyncDatabase
private let caller: ReaderAPICaller
private var log = OSLog(subsystem: Bundle.main.bundleIdentifier!, category: "ReaderAPI")
let isSubfoldersSupported = false
let isTagBasedSystem = true
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var server: String? {
get {
return caller.server
}
}
let isOPMLImportSupported = false
var isOPMLImportInProgress = false
var credentials: Credentials? {
didSet {
caller.credentials = credentials
}
}
weak var accountMetadata: AccountMetadata? {
didSet {
caller.accountMetadata = accountMetadata
}
}
init(dataFolder: String, transport: Transport?) {
let databaseFilePath = (dataFolder as NSString).appendingPathComponent("Sync.sqlite3")
database = SyncDatabase(databaseFilePath: databaseFilePath)
if transport != nil {
caller = ReaderAPICaller(transport: transport!)
} else {
let sessionConfiguration = URLSessionConfiguration.default
sessionConfiguration.requestCachePolicy = .reloadIgnoringLocalCacheData
sessionConfiguration.timeoutIntervalForRequest = 60.0
sessionConfiguration.httpShouldSetCookies = false
sessionConfiguration.httpCookieAcceptPolicy = .never
sessionConfiguration.httpMaximumConnectionsPerHost = 1
sessionConfiguration.httpCookieStorage = nil
sessionConfiguration.urlCache = nil
if let userAgentHeaders = UserAgent.headers() {
sessionConfiguration.httpAdditionalHeaders = userAgentHeaders
}
caller = ReaderAPICaller(transport: URLSession(configuration: sessionConfiguration))
}
}
var refreshProgress = DownloadProgress(numberOfTasks: 0)
func refreshAll(for account: Account, completion: @escaping (Result<Void, Error>) -> Void) {
refreshProgress.addToNumberOfTasksAndRemaining(6)
refreshAccount(account) { result in
switch result {
case .success():
self.sendArticleStatus(for: account) {
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self.refreshArticleStatus(for: account) {
self.refreshArticles(account) {
self.refreshMissingArticles(account) {
self.refreshProgress.clear()
DispatchQueue.main.async {
completion(.success(()))
}
}
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}
}
}
case .failure(let error):
DispatchQueue.main.async {
self.refreshProgress.clear()
let wrappedError = AccountError.wrappedError(error: error, account: account)
completion(.failure(wrappedError))
}
}
}
}
func sendArticleStatus(for account: Account, completion: @escaping (() -> Void)) {
os_log(.debug, log: log, "Sending article statuses...")
let syncStatuses = database.selectForProcessing()
let createUnreadStatuses = syncStatuses.filter { $0.key == ArticleStatus.Key.read && $0.flag == false }
let deleteUnreadStatuses = syncStatuses.filter { $0.key == ArticleStatus.Key.read && $0.flag == true }
let createStarredStatuses = syncStatuses.filter { $0.key == ArticleStatus.Key.starred && $0.flag == true }
let deleteStarredStatuses = syncStatuses.filter { $0.key == ArticleStatus.Key.starred && $0.flag == false }
let group = DispatchGroup()
group.enter()
sendArticleStatuses(createUnreadStatuses, apiCall: caller.createUnreadEntries) {
group.leave()
}
group.enter()
sendArticleStatuses(deleteUnreadStatuses, apiCall: caller.deleteUnreadEntries) {
group.leave()
}
group.enter()
sendArticleStatuses(createStarredStatuses, apiCall: caller.createStarredEntries) {
group.leave()
}
group.enter()
sendArticleStatuses(deleteStarredStatuses, apiCall: caller.deleteStarredEntries) {
group.leave()
}
group.notify(queue: DispatchQueue.main) {
os_log(.debug, log: self.log, "Done sending article statuses.")
completion()
}
}
func refreshArticleStatus(for account: Account, completion: @escaping (() -> Void)) {
os_log(.debug, log: log, "Refreshing article statuses...")
let group = DispatchGroup()
group.enter()
caller.retrieveUnreadEntries() { result in
switch result {
case .success(let articleIDs):
self.syncArticleReadState(account: account, articleIDs: articleIDs)
group.leave()
case .failure(let error):
os_log(.info, log: self.log, "Retrieving unread entries failed: %@.", error.localizedDescription)
group.leave()
}
}
group.enter()
caller.retrieveStarredEntries() { result in
switch result {
case .success(let articleIDs):
self.syncArticleStarredState(account: account, articleIDs: articleIDs)
group.leave()
case .failure(let error):
os_log(.info, log: self.log, "Retrieving starred entries failed: %@.", error.localizedDescription)
group.leave()
}
}
group.notify(queue: DispatchQueue.main) {
os_log(.debug, log: self.log, "Done refreshing article statuses.")
completion()
}
}
func importOPML(for account:Account, opmlFile: URL, completion: @escaping (Result<Void, Error>) -> Void) {
}
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func addFolder(for account: Account, name: String, completion: @escaping (Result<Folder, Error>) -> Void) {
if let folder = account.ensureFolder(with: name) {
completion(.success(folder))
} else {
completion(.failure(FeedbinAccountDelegateError.invalidParameter))
}
}
func renameFolder(for account: Account, with folder: Folder, to name: String, completion: @escaping (Result<Void, Error>) -> Void) {
caller.renameTag(oldName: folder.name ?? "", newName: name) { result in
switch result {
case .success:
DispatchQueue.main.async {
folder.name = name
completion(.success(()))
}
case .failure(let error):
DispatchQueue.main.async {
let wrappedError = AccountError.wrappedError(error: error, account: account)
completion(.failure(wrappedError))
}
}
}
}
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func removeFolder(for account: Account, with folder: Folder, completion: @escaping (Result<Void, Error>) -> Void) {
let group = DispatchGroup()
for feed in folder.topLevelFeeds {
group.enter()
removeFeed(for: account, with: feed, from: folder) { result in
group.leave()
switch result {
case .success:
break
case .failure(let error):
os_log(.error, log: self.log, "Remove feed error: %@.", error.localizedDescription)
}
}
}
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group.notify(queue: DispatchQueue.main) {
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self.caller.deleteTag(name: folder.name!) { (result) in
switch result {
case .success:
account.removeFolder(folder)
completion(.success(()))
case .failure(let error):
os_log(.error, log: self.log, "Remove feed error: %@.", error.localizedDescription)
}
}
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}
}
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func createFeed(for account: Account, url: String, name: String?, container: Container, completion: @escaping (Result<Feed, Error>) -> Void) {
caller.createSubscription(url: url) { result in
switch result {
case .success(let subResult):
switch subResult {
case .created(let subscription):
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self.createFeed(account: account, subscription: subscription, name: name, container: container, completion: completion)
case .alreadySubscribed:
DispatchQueue.main.async {
completion(.failure(AccountError.createErrorAlreadySubscribed))
}
case .notFound:
DispatchQueue.main.async {
completion(.failure(AccountError.createErrorNotFound))
}
}
case .failure(let error):
DispatchQueue.main.async {
let wrappedError = AccountError.wrappedError(error: error, account: account)
completion(.failure(wrappedError))
}
}
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}
}
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func renameFeed(for account: Account, with feed: Feed, to name: String, completion: @escaping (Result<Void, Error>) -> Void) {
// This error should never happen
guard let subscriptionID = feed.subscriptionID else {
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completion(.failure(FeedbinAccountDelegateError.invalidParameter))
return
}
caller.renameSubscription(subscriptionID: subscriptionID, newName: name) { result in
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))
}
}
}
}
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func removeFeed(for account: Account, with feed: Feed, from container: Container, completion: @escaping (Result<Void, Error>) -> Void) {
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if feed.folderRelationship?.count ?? 0 > 1 {
deleteTagging(for: account, with: feed, from: container, completion: completion)
} else {
account.clearFeedMetadata(feed)
deleteSubscription(for: account, with: feed, from: container, completion: completion)
}
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}
func moveFeed(for account: Account, with feed: Feed, from: Container, to: Container, completion: @escaping (Result<Void, Error>) -> Void) {
if from is Account {
addFeed(for: account, with: feed, to: to, completion: completion)
} else {
deleteTagging(for: account, with: feed, from: from) { result in
switch result {
case .success:
self.addFeed(for: account, with: feed, to: to, completion: completion)
case .failure(let error):
completion(.failure(error))
}
}
}
}
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func addFeed(for account: Account, with feed: Feed, to container: Container, completion: @escaping (Result<Void, Error>) -> Void) {
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if let folder = container as? Folder, let feedName = feed.subscriptionID {
caller.createTagging(subscriptionID: feedName, tagName: folder.name ?? "") { result in
switch result {
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case .success:
DispatchQueue.main.async {
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self.saveFolderRelationship(for: feed, withFolderName: folder.name ?? "", id: feed.subscriptionID!)
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account.removeFeed(feed)
folder.addFeed(feed)
completion(.success(()))
}
case .failure(let error):
DispatchQueue.main.async {
let wrappedError = AccountError.wrappedError(error: error, account: account)
completion(.failure(wrappedError))
}
}
}
} else {
DispatchQueue.main.async {
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if let account = container as? Account {
account.addFeedIfNotInAnyFolder(feed)
}
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completion(.success(()))
}
}
}
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func restoreFeed(for account: Account, feed: Feed, container: Container, completion: @escaping (Result<Void, Error>) -> Void) {
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createFeed(for: account, url: feed.url, name: feed.editedName, container: container) { result in
switch result {
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case .success:
completion(.success(()))
case .failure(let error):
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completion(.failure(error))
}
}
}
func restoreFolder(for account: Account, folder: Folder, completion: @escaping (Result<Void, Error>) -> Void) {
account.addFolder(folder)
let group = DispatchGroup()
for feed in folder.topLevelFeeds {
group.enter()
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addFeed(for: account, with: feed, to: folder) { result in
if account.topLevelFeeds.contains(feed) {
account.removeFeed(feed)
}
group.leave()
}
}
group.notify(queue: DispatchQueue.main) {
completion(.success(()))
}
}
func markArticles(for account: Account, articles: Set<Article>, statusKey: ArticleStatus.Key, flag: Bool) -> Set<Article>? {
let syncStatuses = articles.map { article in
return SyncStatus(articleID: article.articleID, key: statusKey, flag: flag)
}
database.insertStatuses(syncStatuses)
if database.selectPendingCount() > 100 {
sendArticleStatus(for: account) {}
}
return account.update(articles, statusKey: statusKey, flag: flag)
}
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func accountDidInitialize(_ account: Account) {
accountMetadata = account.metadata
credentials = try? account.retrieveCredentials(type: .readerAPIKey)
}
static func validateCredentials(transport: Transport, credentials: Credentials, endpoint: URL?, completion: @escaping (Result<Credentials?, Error>) -> Void) {
guard let endpoint = endpoint else {
completion(.failure(TransportError.noURL))
return
}
let caller = ReaderAPICaller(transport: transport)
caller.credentials = credentials
caller.validateCredentials(endpoint: endpoint) { result in
DispatchQueue.main.async {
completion(result)
}
}
}
}
// MARK: Private
private extension ReaderAPIAccountDelegate {
func refreshAccount(_ account: Account, completion: @escaping (Result<Void, Error>) -> Void) {
caller.retrieveTags { result in
switch result {
case .success(let tags):
BatchUpdate.shared.perform {
self.syncFolders(account, tags)
}
self.refreshProgress.completeTask()
self.refreshFeeds(account, completion: completion)
case .failure(let error):
completion(.failure(error))
}
}
}
func syncFolders(_ account: Account, _ tags: [ReaderAPITag]?) {
guard let tags = tags else { return }
assert(Thread.isMainThread)
os_log(.debug, log: log, "Syncing folders with %ld tags.", tags.count)
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let tagNames = tags.filter { $0.type == "folder" }.map { $0.tagID.replacingOccurrences(of: "user/-/label/", with: "") }
// Delete any folders not at Reader
if let folders = account.folders {
folders.forEach { folder in
if !tagNames.contains(folder.name ?? "") {
for feed in folder.topLevelFeeds {
account.addFeed(feed)
clearFolderRelationship(for: feed, withFolderName: folder.name ?? "")
}
account.removeFolder(folder)
}
}
}
let folderNames: [String] = {
if let folders = account.folders {
return folders.map { $0.name ?? "" }
} else {
return [String]()
}
}()
// Make any folders Reader has, but we don't
tagNames.forEach { tagName in
if !folderNames.contains(tagName) {
_ = account.ensureFolder(with: tagName)
}
}
}
func refreshFeeds(_ account: Account, completion: @escaping (Result<Void, Error>) -> Void) {
caller.retrieveSubscriptions { result in
switch result {
case .success(let subscriptions):
self.refreshProgress.completeTask()
BatchUpdate.shared.perform {
self.syncFeeds(account, subscriptions)
self.syncTaggings(account, subscriptions)
}
self.refreshProgress.completeTask()
completion(.success(()))
case .failure(let error):
completion(.failure(error))
}
}
}
func syncFeeds(_ account: Account, _ subscriptions: [ReaderAPISubscription]?) {
guard let subscriptions = subscriptions else { return }
assert(Thread.isMainThread)
os_log(.debug, log: log, "Syncing feeds with %ld subscriptions.", subscriptions.count)
let subFeedIds = subscriptions.map { String($0.feedID) }
// Remove any feeds that are no longer in the subscriptions
if let folders = account.folders {
for folder in folders {
for feed in folder.topLevelFeeds {
if !subFeedIds.contains(feed.feedID) {
folder.removeFeed(feed)
}
}
}
}
for feed in account.topLevelFeeds {
if !subFeedIds.contains(feed.feedID) {
account.removeFeed(feed)
}
}
// Add any feeds we don't have and update any we do
subscriptions.forEach { subscription in
let subFeedId = String(subscription.feedID)
if let feed = account.existingFeed(withFeedID: subFeedId) {
feed.name = subscription.name
feed.homePageURL = subscription.homePageURL
} else {
let feed = account.createFeed(with: subscription.name, url: subscription.url, feedID: subFeedId, homePageURL: subscription.homePageURL)
feed.iconURL = subscription.iconURL
feed.subscriptionID = String(subscription.feedID)
account.addFeed(feed)
}
}
}
func syncTaggings(_ account: Account, _ subscriptions: [ReaderAPISubscription]?) {
guard let subscriptions = subscriptions else { return }
assert(Thread.isMainThread)
os_log(.debug, log: log, "Syncing taggings with %ld subscriptions.", subscriptions.count)
// Set up some structures to make syncing easier
let folderDict: [String: Folder] = {
if let folders = account.folders {
return Dictionary(uniqueKeysWithValues: folders.map { ($0.name ?? "", $0) } )
} else {
return [String: Folder]()
}
}()
let taggingsDict = subscriptions.reduce([String: [ReaderAPISubscription]]()) { (dict, subscription) in
var taggedFeeds = dict
// For each category that this feed belongs to, add the feed to that name in the dict
subscription.categories.forEach({ (category) in
let categoryName = category.categoryLabel.replacingOccurrences(of: "user/-/label/", with: "")
if var taggedFeed = taggedFeeds[categoryName] {
taggedFeed.append(subscription)
taggedFeeds[categoryName] = taggedFeed
} else {
taggedFeeds[categoryName] = [subscription]
}
})
return taggedFeeds
}
// Sync the folders
for (folderName, groupedTaggings) in taggingsDict {
guard let folder = folderDict[folderName] else { return }
let taggingFeedIDs = groupedTaggings.map { String($0.feedID) }
// Move any feeds not in the folder to the account
for feed in folder.topLevelFeeds {
if !taggingFeedIDs.contains(feed.feedID) {
folder.removeFeed(feed)
clearFolderRelationship(for: feed, withFolderName: folder.name ?? "")
account.addFeed(feed)
}
}
// Add any feeds not in the folder
let folderFeedIds = folder.topLevelFeeds.map { $0.feedID }
for subscription in groupedTaggings {
let taggingFeedID = String(subscription.feedID)
if !folderFeedIds.contains(taggingFeedID) {
guard let feed = account.existingFeed(withFeedID: taggingFeedID) else {
continue
}
saveFolderRelationship(for: feed, withFolderName: folderName, id: String(subscription.feedID))
folder.addFeed(feed)
}
}
}
let taggedFeedIDs = Set(subscriptions.map { String($0.feedID) })
// Remove all feeds from the account container that have a tag
for feed in account.topLevelFeeds {
if taggedFeedIDs.contains(feed.feedID) {
account.removeFeed(feed)
}
}
}
func sendArticleStatuses(_ statuses: [SyncStatus],
apiCall: ([Int], @escaping (Result<Void, Error>) -> Void) -> Void,
completion: @escaping (() -> Void)) {
guard !statuses.isEmpty else {
completion()
return
}
let group = DispatchGroup()
let articleIDs = statuses.compactMap { Int($0.articleID) }
let articleIDGroups = articleIDs.chunked(into: 1000)
for articleIDGroup in articleIDGroups {
group.enter()
apiCall(articleIDGroup) { result in
switch result {
case .success:
self.database.deleteSelectedForProcessing(articleIDGroup.map { String($0) } )
group.leave()
case .failure(let error):
os_log(.error, log: self.log, "Article status sync call failed: %@.", error.localizedDescription)
self.database.resetSelectedForProcessing(articleIDGroup.map { String($0) } )
group.leave()
}
}
}
group.notify(queue: DispatchQueue.main) {
completion()
}
}
func clearFolderRelationship(for feed: Feed, withFolderName folderName: String) {
if var folderRelationship = feed.folderRelationship {
folderRelationship[folderName] = nil
feed.folderRelationship = folderRelationship
}
}
func saveFolderRelationship(for feed: Feed, withFolderName folderName: String, id: String) {
if var folderRelationship = feed.folderRelationship {
folderRelationship[folderName] = id
feed.folderRelationship = folderRelationship
} else {
feed.folderRelationship = [folderName: id]
}
}
func decideBestFeedChoice(account: Account, url: String, name: String?, container: Container, choices: [ReaderAPISubscriptionChoice], completion: @escaping (Result<Feed, Error>) -> Void) {
let feedSpecifiers: [FeedSpecifier] = choices.map { choice in
let source = url == choice.url ? FeedSpecifier.Source.UserEntered : FeedSpecifier.Source.HTMLLink
let specifier = FeedSpecifier(title: choice.name, urlString: choice.url, source: source)
return specifier
}
if let bestSpecifier = FeedSpecifier.bestFeed(in: Set(feedSpecifiers)) {
if let bestSubscription = choices.filter({ bestSpecifier.urlString == $0.url }).first {
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createFeed(for: account, url: bestSubscription.url, name: name, container: container, completion: completion)
} else {
DispatchQueue.main.async {
completion(.failure(ReaderAPIAccountDelegateError.invalidParameter))
}
}
} else {
DispatchQueue.main.async {
completion(.failure(ReaderAPIAccountDelegateError.invalidParameter))
}
}
}
func createFeed( account: Account, subscription sub: ReaderAPISubscription, name: String?, container: Container, completion: @escaping (Result<Feed, Error>) -> Void) {
DispatchQueue.main.async {
let feed = account.createFeed(with: sub.name, url: sub.url, feedID: String(sub.feedID), homePageURL: sub.homePageURL)
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feed.subscriptionID = String(sub.feedID)
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account.addFeed(feed, to: container) { result in
switch result {
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case .success:
if let name = name {
account.renameFeed(feed, to: name) { result in
switch result {
case .success:
self.initialFeedDownload(account: account, feed: feed, completion: completion)
case .failure(let error):
completion(.failure(error))
}
}
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} else {
self.initialFeedDownload(account: account, feed: feed, completion: completion)
}
case .failure(let error):
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completion(.failure(error))
}
}
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}
}
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func initialFeedDownload( account: Account, feed: Feed, completion: @escaping (Result<Feed, Error>) -> Void) {
// Download the initial articles
self.caller.retrieveEntries(feedID: feed.feedID) { result in
switch result {
case .success(let (entries, page)):
self.processEntries(account: account, entries: entries) {
self.refreshArticleStatus(for: account) {
self.refreshArticles(account, page: page) {
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self.refreshMissingArticles(account) {
DispatchQueue.main.async {
completion(.success(feed))
}
}
}
}
}
case .failure(let error):
completion(.failure(error))
}
}
}
func refreshArticles(_ account: Account, completion: @escaping (() -> Void)) {
os_log(.debug, log: log, "Refreshing articles...")
caller.retrieveEntries() { result in
switch result {
case .success(let (entries, page, lastPageNumber)):
if let last = lastPageNumber {
self.refreshProgress.addToNumberOfTasksAndRemaining(last - 1)
}
self.processEntries(account: account, entries: entries) {
self.refreshProgress.completeTask()
self.refreshArticles(account, page: page) {
os_log(.debug, log: self.log, "Done refreshing articles.")
completion()
}
}
case .failure(let error):
os_log(.error, log: self.log, "Refresh articles failed: %@.", error.localizedDescription)
completion()
}
}
}
func refreshMissingArticles(_ account: Account, completion: @escaping (() -> Void)) {
os_log(.debug, log: log, "Refreshing missing articles...")
let group = DispatchGroup()
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let fetchedArticleIDs = account.fetchArticleIDsForStatusesWithoutArticles()
let articleIDs = Array(fetchedArticleIDs)
let chunkedArticleIDs = articleIDs.chunked(into: 100)
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for chunk in chunkedArticleIDs {
group.enter()
self.caller.retrieveEntries(articleIDs: chunk) { result in
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switch result {
case .success(let entries):
self.processEntries(account: account, entries: entries) {
group.leave()
}
case .failure(let error):
os_log(.error, log: self.log, "Refresh missing articles failed: %@.", error.localizedDescription)
group.leave()
}
}
}
group.notify(queue: DispatchQueue.main) {
self.refreshProgress.completeTask()
os_log(.debug, log: self.log, "Done refreshing missing articles.")
completion()
}
}
func refreshArticles(_ account: Account, page: String?, completion: @escaping (() -> Void)) {
guard let page = page else {
completion()
return
}
caller.retrieveEntries(page: page) { result in
switch result {
case .success(let (entries, nextPage)):
self.processEntries(account: account, entries: entries) {
self.refreshProgress.completeTask()
self.refreshArticles(account, page: nextPage, completion: completion)
}
case .failure(let error):
os_log(.error, log: self.log, "Refresh articles for additional pages failed: %@.", error.localizedDescription)
completion()
}
}
}
func processEntries(account: Account, entries: [ReaderAPIEntry]?, completion: @escaping (() -> Void)) {
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let parsedItems = mapEntriesToParsedItems(account: account, entries: entries)
let parsedMap = Dictionary(grouping: parsedItems, by: { item in item.feedURL } )
let group = DispatchGroup()
for (feedID, mapItems) in parsedMap {
group.enter()
if let feed = account.existingFeed(withFeedID: feedID) {
DispatchQueue.main.async {
account.update(feed, parsedItems: Set(mapItems), defaultRead: true) {
group.leave()
}
}
} else {
group.leave()
}
}
group.notify(queue: DispatchQueue.main) {
completion()
}
}
func mapEntriesToParsedItems(account: Account, entries: [ReaderAPIEntry]?) -> Set<ParsedItem> {
guard let entries = entries else {
return Set<ParsedItem>()
}
let parsedItems: [ParsedItem] = entries.map { entry in
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// let authors = Set([ParsedAuthor(name: entry.authorName, url: entry.jsonFeed?.jsonFeedAuthor?.url, avatarURL: entry.jsonFeed?.jsonFeedAuthor?.avatarURL, emailAddress: nil)])
// let feed = account.idToFeedDictionary[entry.origin.streamId!]! // TODO clean this up
return ParsedItem(syncServiceID: entry.uniqueID(), uniqueID: entry.uniqueID(), feedURL: entry.origin.streamId!, url: nil, externalURL: entry.alternates.first?.url, title: entry.title, contentHTML: entry.summary.content, contentText: nil, summary: entry.summary.content, imageURL: nil, bannerImageURL: nil, datePublished: entry.parseDatePublished(), dateModified: nil, authors: nil, tags: nil, attachments: nil)
}
return Set(parsedItems)
}
func syncArticleReadState(account: Account, articleIDs: [Int]?) {
guard let articleIDs = articleIDs else {
return
}
let feedbinUnreadArticleIDs = Set(articleIDs.map { String($0) } )
let currentUnreadArticleIDs = account.fetchUnreadArticleIDs()
// Mark articles as unread
let deltaUnreadArticleIDs = feedbinUnreadArticleIDs.subtracting(currentUnreadArticleIDs)
let markUnreadArticles = account.fetchArticles(.articleIDs(deltaUnreadArticleIDs))
account.update(markUnreadArticles, statusKey: .read, flag: false)
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// Save any unread statuses for articles we haven't yet received
let markUnreadArticleIDs = Set(markUnreadArticles.map { $0.articleID })
let missingUnreadArticleIDs = deltaUnreadArticleIDs.subtracting(markUnreadArticleIDs)
account.ensureStatuses(missingUnreadArticleIDs, true, .read, false)
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// Mark articles as read
let deltaReadArticleIDs = currentUnreadArticleIDs.subtracting(feedbinUnreadArticleIDs)
let markReadArticles = account.fetchArticles(.articleIDs(deltaReadArticleIDs))
account.update(markReadArticles, statusKey: .read, flag: true)
// Save any read statuses for articles we haven't yet received
let markReadArticleIDs = Set(markReadArticles.map { $0.articleID })
let missingReadArticleIDs = deltaReadArticleIDs.subtracting(markReadArticleIDs)
account.ensureStatuses(missingReadArticleIDs, true, .read, true)
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}
func syncArticleStarredState(account: Account, articleIDs: [Int]?) {
guard let articleIDs = articleIDs else {
return
}
let feedbinStarredArticleIDs = Set(articleIDs.map { String($0) } )
let currentStarredArticleIDs = account.fetchStarredArticleIDs()
// Mark articles as starred
let deltaStarredArticleIDs = feedbinStarredArticleIDs.subtracting(currentStarredArticleIDs)
let markStarredArticles = account.fetchArticles(.articleIDs(deltaStarredArticleIDs))
account.update(markStarredArticles, statusKey: .starred, flag: true)
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// Save any starred statuses for articles we haven't yet received
let markStarredArticleIDs = Set(markStarredArticles.map { $0.articleID })
let missingStarredArticleIDs = deltaStarredArticleIDs.subtracting(markStarredArticleIDs)
account.ensureStatuses(missingStarredArticleIDs, true, .starred, true)
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// Mark articles as unstarred
let deltaUnstarredArticleIDs = currentStarredArticleIDs.subtracting(feedbinStarredArticleIDs)
let markUnstarredArticles = account.fetchArticles(.articleIDs(deltaUnstarredArticleIDs))
account.update(markUnstarredArticles, statusKey: .starred, flag: false)
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// Save any unstarred statuses for articles we haven't yet received
let markUnstarredArticleIDs = Set(markUnstarredArticles.map { $0.articleID })
let missingUnstarredArticleIDs = deltaUnstarredArticleIDs.subtracting(markUnstarredArticleIDs)
account.ensureStatuses(missingUnstarredArticleIDs, true, .starred, false)
}
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func deleteTagging(for account: Account, with feed: Feed, from container: Container?, completion: @escaping (Result<Void, Error>) -> Void) {
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if let folder = container as? Folder, let feedName = feed.subscriptionID {
caller.deleteTagging(subscriptionID: feedName, tagName: folder.name ?? "") { result in
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switch result {
case .success:
DispatchQueue.main.async {
self.clearFolderRelationship(for: feed, withFolderName: folder.name ?? "")
folder.removeFeed(feed)
account.addFeedIfNotInAnyFolder(feed)
completion(.success(()))
}
case .failure(let error):
DispatchQueue.main.async {
let wrappedError = AccountError.wrappedError(error: error, account: account)
completion(.failure(wrappedError))
}
}
}
} else {
if let account = container as? Account {
account.removeFeed(feed)
}
completion(.success(()))
}
}
func deleteSubscription(for account: Account, with feed: Feed, from container: Container?, completion: @escaping (Result<Void, Error>) -> Void) {
// This error should never happen
guard let subscriptionID = feed.subscriptionID else {
completion(.failure(FeedbinAccountDelegateError.invalidParameter))
return
}
caller.deleteSubscription(subscriptionID: subscriptionID) { result in
switch result {
case .success:
DispatchQueue.main.async {
account.removeFeed(feed)
if let folders = account.folders {
for folder in folders {
folder.removeFeed(feed)
}
}
completion(.success(()))
}
case .failure(let error):
DispatchQueue.main.async {
let wrappedError = AccountError.wrappedError(error: error, account: account)
completion(.failure(wrappedError))
}
}
}
}
}