95 lines
2.6 KiB
Swift
95 lines
2.6 KiB
Swift
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//
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// CloudKitFeedRefresher.swift
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// Account
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//
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// Created by Maurice Parker on 4/25/20.
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// Copyright © 2020 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 RSWeb
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import Articles
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final class CloudKitFeedRefresher {
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private var log = OSLog(subsystem: Bundle.main.bundleIdentifier!, category: "CloudKit")
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weak var refreshProgress: DownloadProgress?
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weak var refresher: LocalAccountRefresher?
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weak var articlesZone: CloudKitArticlesZone?
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init(refreshProgress: DownloadProgress?, refresher: LocalAccountRefresher?, articlesZone: CloudKitArticlesZone?) {
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self.refreshProgress = refreshProgress
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self.refresher = refresher
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self.articlesZone = articlesZone
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}
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func refresh(_ account: Account, _ webFeeds: Set<WebFeed>, completion: @escaping () -> Void) {
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guard let refreshProgress = refreshProgress, let refresher = refresher, let articlesZone = articlesZone else { return }
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var newArticles = Set<Article>()
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var deletedArticles = Set<Article>()
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var refresherWebFeeds = Set<WebFeed>()
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let group = DispatchGroup()
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refreshProgress.addToNumberOfTasksAndRemaining(2)
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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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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) { result in
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switch result {
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case .success(let articleChanges):
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newArticles.formUnion(articleChanges.newArticles ?? Set<Article>())
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deletedArticles.formUnion(articleChanges.deletedArticles ?? Set<Article>())
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refreshProgress.completeTask()
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group.leave()
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case .failure(let error):
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os_log(.error, log: self.log, "CloudKit Feed refresh update error: %@.", error.localizedDescription)
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refreshProgress.completeTask()
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group.leave()
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}
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}
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case .failure(let error):
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os_log(.error, log: self.log, "CloudKit Feed refresh error: %@.", error.localizedDescription)
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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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group.enter()
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refresher.refreshFeeds(refresherWebFeeds) {
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group.leave()
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}
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group.notify(queue: DispatchQueue.main) {
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articlesZone.deleteArticles(deletedArticles) { _ in
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refreshProgress.completeTask()
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articlesZone.sendNewArticles(newArticles) { _ in
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refreshProgress.completeTask()
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completion()
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}
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}
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}
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}
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}
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