NetNewsWire/Frameworks/Account/Feedbin/FeedbinAccountDelegate.swift

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//
// FeedbinAccountDelegate.swift
// Account
//
// Created by Maurice Parker on 5/2/19.
// Copyright © 2019 Ranchero Software, LLC. All rights reserved.
//
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#if os(macOS)
import AppKit
#else
import UIKit
import RSCore
#endif
import Articles
import RSCore
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import RSParser
import RSWeb
import SyncDatabase
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import os.log
public enum FeedbinAccountDelegateError: String, Error {
case invalidParameter = "There was an invalid parameter passed."
}
final class FeedbinAccountDelegate: AccountDelegate {
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private let database: SyncDatabase
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private let caller: FeedbinAPICaller
private var log = OSLog(subsystem: Bundle.main.bundleIdentifier!, category: "Feedbin")
let supportsSubFolders = false
let server: String? = "api.feedbin.com"
var opmlImportInProgress = false
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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 = FeedbinAPICaller(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 = FeedbinAPICaller(transport: URLSession(configuration: sessionConfiguration))
}
}
var refreshProgress = DownloadProgress(numberOfTasks: 0)
func refreshAll(for account: Account, completion: @escaping (Result<Void, Error>) -> Void) {
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refreshProgress.addToNumberOfTasksAndRemaining(6)
refreshAccount(account) { result in
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switch result {
case .success():
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self.refreshArticles(account) {
self.refreshArticleStatus(for: account) {
self.refreshMissingArticles(account) {
self.refreshProgress.clear()
DispatchQueue.main.async {
completion(.success(()))
}
}
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}
}
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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))
}
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}
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}
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}
func sendArticleStatus(for account: Account, completion: @escaping (() -> Void)) {
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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)) {
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os_log(.debug, log: log, "Refreshing article statuses...")
let group = DispatchGroup()
group.enter()
caller.retrieveUnreadEntries() { result in
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switch result {
case .success(let articleIDs):
self.syncArticleReadState(account: account, articleIDs: articleIDs)
group.leave()
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case .failure(let error):
os_log(.info, log: self.log, "Retrieving unread entries failed: %@.", error.localizedDescription)
group.leave()
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}
}
group.enter()
caller.retrieveStarredEntries() { result in
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switch result {
case .success(let articleIDs):
self.syncArticleStarredState(account: account, articleIDs: articleIDs)
group.leave()
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case .failure(let error):
os_log(.info, log: self.log, "Retrieving starred entries failed: %@.", error.localizedDescription)
group.leave()
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}
}
group.notify(queue: DispatchQueue.main) {
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os_log(.debug, log: self.log, "Done refreshing article statuses.")
completion()
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}
}
func importOPML(for account:Account, opmlFile: URL, completion: @escaping (Result<Void, Error>) -> Void) {
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var fileData: Data?
do {
fileData = try Data(contentsOf: opmlFile)
} catch {
completion(.failure(error))
return
}
guard let opmlData = fileData else {
completion(.success(()))
return
}
os_log(.debug, log: log, "Begin importing OPML...")
opmlImportInProgress = true
caller.importOPML(opmlData: opmlData) { result in
switch result {
case .success(let importResult):
if importResult.complete {
os_log(.debug, log: self.log, "Import OPML done.")
self.opmlImportInProgress = false
DispatchQueue.main.async {
completion(.success(()))
}
} else {
self.checkImportResult(opmlImportResultID: importResult.importResultID, completion: completion)
}
case .failure(let error):
os_log(.debug, log: self.log, "Import OPML failed.")
self.opmlImportInProgress = false
DispatchQueue.main.async {
let wrappedError = AccountError.wrappedError(error: error, account: account)
completion(.failure(wrappedError))
}
}
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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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caller.renameTag(oldName: folder.name ?? "", newName: name) { result in
switch result {
case .success:
DispatchQueue.main.async {
folder.name = name
completion(.success(()))
}
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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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}
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func deleteFolder(for account: Account, with folder: Folder, completion: @escaping (Result<Void, Error>) -> Void) {
// Feedbin uses tags and if at least one feed isn't tagged, then the folder doesn't exist on their system
guard folder.hasAtLeastOneFeed() else {
account.deleteFolder(folder)
return
}
// After we successfully delete at Feedbin, we add all the feeds to the account to save them. We then
// delete the folder. We then sync the taggings we received on the delete to remove any feeds from
// the account that might be in another folder.
caller.deleteTag(name: folder.name ?? "") { result in
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switch result {
case .success(let taggings):
DispatchQueue.main.sync {
BatchUpdate.shared.perform {
for feed in folder.topLevelFeeds {
account.addFeed(feed)
self.clearFolderRelationship(for: feed, withFolderName: folder.name ?? "")
}
account.deleteFolder(folder)
}
completion(.success(()))
}
self.syncTaggings(account, taggings)
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case .failure(let error):
DispatchQueue.main.async {
let wrappedError = AccountError.wrappedError(error: error, account: account)
completion(.failure(wrappedError))
}
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}
}
}
func createFeed(for account: Account, url: String, name: String?, container: Container, completion: @escaping (Result<Feed, Error>) -> Void) {
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caller.createSubscription(url: url) { result in
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switch result {
case .success(let subResult):
switch subResult {
case .created(let subscription):
self.createFeed(account: account, subscription: subscription, name: name, container: container, completion: completion)
case .multipleChoice(let choices):
self.decideBestFeedChoice(account: account, url: url, name: name, container: container, choices: choices, completion: completion)
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case .alreadySubscribed:
DispatchQueue.main.async {
completion(.failure(AccountError.createErrorAlreadySubscribed))
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}
case .notFound:
DispatchQueue.main.async {
completion(.failure(AccountError.createErrorNotFound))
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}
}
case .failure(let error):
DispatchQueue.main.async {
let wrappedError = AccountError.wrappedError(error: error, account: account)
completion(.failure(wrappedError))
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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 {
completion(.failure(FeedbinAccountDelegateError.invalidParameter))
return
}
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caller.renameSubscription(subscriptionID: subscriptionID, newName: name) { result in
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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 deleteFeed(for account: Account, with feed: Feed, completion: @escaping (Result<Void, Error>) -> Void) {
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// 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)
}
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}
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 addFeed(for account: Account, to container: Container, with feed: Feed, completion: @escaping (Result<Void, Error>) -> Void) {
if let folder = container as? Folder, let feedID = Int(feed.feedID) {
caller.createTagging(feedID: feedID, name: folder.name ?? "") { result in
switch result {
case .success(let taggingID):
DispatchQueue.main.async {
self.saveFolderRelationship(for: feed, withFolderName: folder.name ?? "", id: String(taggingID))
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 {
if let account = container as? Account {
account.addFeedIfNotInAnyFolder(feed)
}
DispatchQueue.main.async {
completion(.success(()))
}
}
}
func removeFeed(for account: Account, from container: Container, with feed: Feed, completion: @escaping (Result<Void, Error>) -> Void) {
if let folder = container as? Folder, let feedTaggingID = feed.folderRelationship?[folder.name ?? ""] {
caller.deleteTagging(taggingID: feedTaggingID) { result in
switch result {
case .success:
DispatchQueue.main.async {
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(()))
}
}
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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
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switch result {
case .success:
completion(.success(()))
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case .failure(let error):
completion(.failure(error))
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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)
let group = DispatchGroup()
for feed in folder.topLevelFeeds {
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group.enter()
addFeed(for: account, to: folder, with: feed) { result in
if account.topLevelFeeds.contains(feed) {
account.removeFeed(feed)
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}
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group.leave()
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}
}
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group.notify(queue: DispatchQueue.main) {
completion(.success(()))
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}
}
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)
}
func accountDidInitialize(_ account: Account) {
credentials = try? account.retrieveBasicCredentials()
accountMetadata = account.metadata
}
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static func validateCredentials(transport: Transport, credentials: Credentials, completion: @escaping (Result<Bool, Error>) -> Void) {
let caller = FeedbinAPICaller(transport: transport)
caller.credentials = credentials
caller.validateCredentials() { result in
DispatchQueue.main.async {
completion(result)
}
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}
}
}
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// MARK: Private
private extension FeedbinAccountDelegate {
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func refreshAccount(_ account: Account, completion: @escaping (Result<Void, Error>) -> Void) {
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caller.retrieveTags { result in
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switch result {
case .success(let tags):
BatchUpdate.shared.perform {
self.syncFolders(account, tags)
}
self.refreshProgress.completeTask()
self.refreshFeeds(account, completion: completion)
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case .failure(let error):
completion(.failure(error))
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}
}
}
func checkImportResult(opmlImportResultID: Int, completion: @escaping (Result<Void, Error>) -> Void) {
DispatchQueue.main.async {
Timer.scheduledTimer(withTimeInterval: 15, repeats: true) { timer in
os_log(.debug, log: self.log, "Checking status of OPML import...")
self.caller.retrieveOPMLImportResult(importID: opmlImportResultID) { result in
switch result {
case .success(let importResult):
if let result = importResult, result.complete {
os_log(.debug, log: self.log, "Checking status of OPML import successfully completed.")
timer.invalidate()
self.opmlImportInProgress = false
DispatchQueue.main.async {
completion(.success(()))
}
}
case .failure(let error):
os_log(.debug, log: self.log, "Import OPML check failed.")
timer.invalidate()
self.opmlImportInProgress = false
DispatchQueue.main.async {
completion(.failure(error))
}
}
}
}
}
}
func syncFolders(_ account: Account, _ tags: [FeedbinTag]?) {
guard let tags = tags else { return }
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os_log(.debug, log: log, "Syncing folders with %ld tags.", tags.count)
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let tagNames = tags.map { $0.name }
// Delete any folders not at Feedbin
if let folders = account.folders {
folders.forEach { folder in
if !tagNames.contains(folder.name ?? "") {
DispatchQueue.main.sync {
for feed in folder.topLevelFeeds {
account.addFeed(feed)
clearFolderRelationship(for: feed, withFolderName: folder.name ?? "")
}
account.deleteFolder(folder)
}
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}
}
}
let folderNames: [String] = {
if let folders = account.folders {
return folders.map { $0.name ?? "" }
} else {
return [String]()
}
}()
// Make any folders Feedbin has, but we don't
tagNames.forEach { tagName in
if !folderNames.contains(tagName) {
DispatchQueue.main.sync {
_ = 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()
self.caller.retrieveTaggings { result in
switch result {
case .success(let taggings):
self.refreshProgress.completeTask()
self.caller.retrieveIcons { result in
switch result {
case .success(let icons):
BatchUpdate.shared.perform {
self.syncFeeds(account, subscriptions)
self.syncTaggings(account, taggings)
self.syncFavicons(account, icons)
}
self.refreshProgress.completeTask()
completion(.success(()))
case .failure(let error):
completion(.failure(error))
}
}
case .failure(let error):
completion(.failure(error))
}
}
case .failure(let error):
completion(.failure(error))
}
}
}
func syncFeeds(_ account: Account, _ subscriptions: [FeedbinSubscription]?) {
guard let subscriptions = subscriptions else { return }
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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) {
DispatchQueue.main.sync {
folder.removeFeed(feed)
}
}
}
}
}
for feed in account.topLevelFeeds {
if !subFeedIds.contains(feed.feedID) {
DispatchQueue.main.sync {
account.removeFeed(feed)
}
}
}
// Add any feeds we don't have and update any we do
subscriptions.forEach { subscription in
let subFeedId = String(subscription.feedID)
DispatchQueue.main.sync {
if let feed = account.idToFeedDictionary[subFeedId] {
feed.name = subscription.name
feed.homePageURL = subscription.homePageURL
} else {
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let feed = account.createFeed(with: subscription.name, url: subscription.url, feedID: subFeedId, homePageURL: subscription.homePageURL)
feed.subscriptionID = String(subscription.subscriptionID)
account.addFeed(feed)
}
}
}
}
func syncTaggings(_ account: Account, _ taggings: [FeedbinTagging]?) {
guard let taggings = taggings else { return }
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os_log(.debug, log: log, "Syncing taggings with %ld taggings.", taggings.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]()
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}
}()
let taggingsDict = taggings.reduce([String: [FeedbinTagging]]()) { (dict, tagging) in
var taggedFeeds = dict
if var taggedFeed = taggedFeeds[tagging.name] {
taggedFeed.append(tagging)
taggedFeeds[tagging.name] = taggedFeed
} else {
taggedFeeds[tagging.name] = [tagging]
}
return taggedFeeds
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}
// 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) {
DispatchQueue.main.sync {
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 tagging in groupedTaggings {
let taggingFeedID = String(tagging.feedID)
if !folderFeedIds.contains(taggingFeedID) {
guard let feed = account.idToFeedDictionary[taggingFeedID] else {
continue
}
DispatchQueue.main.sync {
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saveFolderRelationship(for: feed, withFolderName: folderName, id: String(tagging.taggingID))
folder.addFeed(feed)
}
}
}
}
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let taggedFeedIDs = Set(taggings.map { String($0.feedID) })
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// Remove all feeds from the account container that have a tag
DispatchQueue.main.sync {
for feed in account.topLevelFeeds {
if taggedFeedIDs.contains(feed.feedID) {
account.removeFeed(feed)
}
}
}
}
func syncFavicons(_ account: Account, _ icons: [FeedbinIcon]?) {
guard let icons = icons else { return }
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os_log(.debug, log: log, "Syncing favicons with %ld icons.", icons.count)
let iconDict = Dictionary(uniqueKeysWithValues: icons.map { ($0.host, $0.url) } )
for feed in account.flattenedFeeds() {
for (key, value) in iconDict {
if feed.homePageURL?.contains(key) ?? false {
DispatchQueue.main.sync {
feed.faviconURL = value
}
break
}
}
}
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}
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()
}
}
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func clearFolderRelationship(for feed: Feed, withFolderName folderName: String) {
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if var folderRelationship = feed.folderRelationship {
folderRelationship[folderName] = nil
feed.folderRelationship = folderRelationship
}
}
func saveFolderRelationship(for feed: Feed, withFolderName folderName: String, id: String) {
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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: [FeedbinSubscriptionChoice], 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 {
createFeed(for: account, url: bestSubscription.url, name: name, container: container, completion: completion)
} else {
DispatchQueue.main.async {
completion(.failure(FeedbinAccountDelegateError.invalidParameter))
}
}
} else {
DispatchQueue.main.async {
completion(.failure(FeedbinAccountDelegateError.invalidParameter))
}
}
}
func createFeed( account: Account, subscription sub: FeedbinSubscription, name: String?, container: Container, completion: @escaping (Result<Feed, Error>) -> Void) {
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DispatchQueue.main.async {
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let feed = account.createFeed(with: sub.name, url: sub.url, feedID: String(sub.feedID), homePageURL: sub.homePageURL)
feed.subscriptionID = String(sub.subscriptionID)
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container.addFeed(feed) { result in
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switch result {
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)
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}
case .failure(let error):
completion(.failure(error))
}
}
}
}
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.refreshArticles(account, page: page) {
self.refreshArticleStatus(for: account) {
self.refreshMissingArticles(account) {
DispatchQueue.main.async {
completion(.success(feed))
}
}
}
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}
}
case .failure(let error):
completion(.failure(error))
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}
}
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}
func refreshArticles(_ account: Account, completion: @escaping (() -> Void)) {
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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)
}
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self.processEntries(account: account, entries: entries) {
self.refreshProgress.completeTask()
self.refreshArticles(account, page: page) {
os_log(.debug, log: self.log, "Done refreshing articles.")
completion()
}
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}
case .failure(let error):
os_log(.error, log: self.log, "Refresh articles failed: %@.", error.localizedDescription)
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completion()
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}
}
}
func refreshMissingArticles(_ account: Account, completion: @escaping (() -> Void)) {
os_log(.debug, log: log, "Refreshing missing articles...")
let articleIDs = Array(account.fetchArticleIDsForStatusesWithoutArticles())
let group = DispatchGroup()
let chunkedArticleIDs = articleIDs.chunked(into: 100)
for chunk in chunkedArticleIDs {
group.enter()
caller.retrieveEntries(articleIDs: chunk) { result in
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) {
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self.refreshProgress.completeTask()
os_log(.debug, log: self.log, "Done refreshing missing articles.")
completion()
}
}
func refreshArticles(_ account: Account, page: String?, completion: @escaping (() -> Void)) {
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guard let page = page else {
completion()
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return
}
caller.retrieveEntries(page: page) { result in
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switch result {
case .success(let (entries, nextPage)):
self.processEntries(account: account, entries: entries) {
self.refreshProgress.completeTask()
self.refreshArticles(account, page: nextPage, completion: completion)
}
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case .failure(let error):
os_log(.error, log: self.log, "Refresh articles for additional pages failed: %@.", error.localizedDescription)
completion()
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}
}
}
func processEntries(account: Account, entries: [FeedbinEntry]?, completion: @escaping (() -> Void)) {
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let parsedItems = mapEntriesToParsedItems(entries: entries)
let parsedMap = Dictionary(grouping: parsedItems, by: { item in item.feedURL } )
let group = DispatchGroup()
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for (feedID, mapItems) in parsedMap {
group.enter()
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if let feed = account.idToFeedDictionary[feedID] {
DispatchQueue.main.async {
account.update(feed, parsedItems: Set(mapItems), defaultRead: true) {
group.leave()
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}
}
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} else {
group.leave()
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}
}
group.notify(queue: DispatchQueue.main) {
completion()
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}
}
func mapEntriesToParsedItems(entries: [FeedbinEntry]?) -> Set<ParsedItem> {
guard let entries = entries else {
return Set<ParsedItem>()
}
let parsedItems: [ParsedItem] = entries.map { entry in
let authors = Set([ParsedAuthor(name: entry.authorName, url: entry.jsonFeed?.jsonFeedAuthor?.url, avatarURL: entry.jsonFeed?.jsonFeedAuthor?.avatarURL, emailAddress: nil)])
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return ParsedItem(syncServiceID: String(entry.articleID), uniqueID: String(entry.articleID), feedURL: String(entry.feedID), url: nil, externalURL: entry.url, title: entry.title, contentHTML: entry.contentHTML, contentText: nil, summary: entry.summary, imageURL: nil, bannerImageURL: nil, datePublished: entry.parseDatePublished(), dateModified: nil, authors: authors, tags: nil, attachments: nil)
}
return Set(parsedItems)
}
func syncArticleReadState(account: Account, articleIDs: [Int]?) {
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guard let articleIDs = articleIDs else {
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return
}
let feedbinUnreadArticleIDs = Set(articleIDs.map { String($0) } )
let currentUnreadArticleIDs = account.fetchUnreadArticleIDs()
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// Mark articles as unread
let deltaUnreadArticleIDs = feedbinUnreadArticleIDs.subtracting(currentUnreadArticleIDs)
let markUnreadArticles = account.fetchArticles(forArticleIDs: deltaUnreadArticleIDs)
DispatchQueue.main.async {
_ = account.update(markUnreadArticles, statusKey: .read, flag: false)
}
// Save any unread statuses for articles we haven't yet received
let markUnreadArticleIDs = Set(markUnreadArticles.map { $0.articleID })
let missingUnreadArticleIDs = deltaUnreadArticleIDs.subtracting(markUnreadArticleIDs)
if !missingUnreadArticleIDs.isEmpty {
DispatchQueue.main.async {
account.ensureStatuses(missingUnreadArticleIDs, .read, false)
}
}
// Mark articles as read
let deltaReadArticleIDs = currentUnreadArticleIDs.subtracting(feedbinUnreadArticleIDs)
let markReadArticles = account.fetchArticles(forArticleIDs: deltaReadArticleIDs)
DispatchQueue.main.async {
_ = 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)
if !missingReadArticleIDs.isEmpty {
DispatchQueue.main.async {
account.ensureStatuses(missingReadArticleIDs, .read, true)
}
}
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}
func syncArticleStarredState(account: Account, articleIDs: [Int]?) {
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guard let articleIDs = articleIDs else {
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return
}
let feedbinStarredArticleIDs = Set(articleIDs.map { String($0) } )
let currentStarredArticleIDs = account.fetchStarredArticleIDs()
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// Mark articles as starred
let deltaStarredArticleIDs = feedbinStarredArticleIDs.subtracting(currentStarredArticleIDs)
let markStarredArticles = account.fetchArticles(forArticleIDs: deltaStarredArticleIDs)
DispatchQueue.main.async {
_ = account.update(markStarredArticles, statusKey: .starred, flag: true)
}
// Save any starred statuses for articles we haven't yet received
let markStarredArticleIDs = Set(markStarredArticles.map { $0.articleID })
let missingStarredArticleIDs = deltaStarredArticleIDs.subtracting(markStarredArticleIDs)
if !missingStarredArticleIDs.isEmpty {
DispatchQueue.main.async {
account.ensureStatuses(missingStarredArticleIDs, .starred, true)
}
}
// Mark articles as unstarred
let deltaUnstarredArticleIDs = currentStarredArticleIDs.subtracting(feedbinStarredArticleIDs)
let markUnstarredArticles = account.fetchArticles(forArticleIDs: deltaUnstarredArticleIDs)
DispatchQueue.main.async {
_ = 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)
if !missingUnstarredArticleIDs.isEmpty {
DispatchQueue.main.async {
account.ensureStatuses(missingUnstarredArticleIDs, .starred, false)
}
}
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}
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}