NetNewsWire/Frameworks/Account/LocalAccount/LocalAccountDelegate.swift

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//
// LocalAccountDelegate.swift
// NetNewsWire
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//
// Created by Brent Simmons on 9/16/17.
// Copyright © 2017 Ranchero Software, LLC. All rights reserved.
//
import Foundation
import RSCore
import RSParser
import Articles
import RSWeb
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public enum LocalAccountDelegateError: String, Error {
case invalidParameter = "An invalid parameter was used."
}
final class LocalAccountDelegate: AccountDelegate {
let behaviors: AccountBehaviors = []
let isOPMLImportInProgress = false
let server: String? = nil
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var credentials: Credentials?
var accountMetadata: AccountMetadata?
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private let refresher = LocalAccountRefresher()
var refreshProgress: DownloadProgress {
return refresher.progress
}
func refreshAll(for account: Account, completion: @escaping (Result<Void, Error>) -> Void) {
refresher.refreshFeeds(account.flattenedWebFeeds()) {
account.metadata.lastArticleFetchEndTime = Date()
completion(.success(()))
}
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}
func sendArticleStatus(for account: Account, completion: @escaping ((Result<Void, Error>) -> Void)) {
completion(.success(()))
}
func refreshArticleStatus(for account: Account, completion: @escaping ((Result<Void, Error>) -> Void)) {
completion(.success(()))
}
func importOPML(for account:Account, opmlFile: URL, completion: @escaping (Result<Void, Error>) -> Void) {
var fileData: Data?
do {
fileData = try Data(contentsOf: opmlFile)
} catch {
completion(.failure(error))
return
}
guard let opmlData = fileData else {
completion(.success(()))
return
}
let parserData = ParserData(url: opmlFile.absoluteString, data: opmlData)
var opmlDocument: RSOPMLDocument?
do {
opmlDocument = try RSOPMLParser.parseOPML(with: parserData)
} catch {
completion(.failure(error))
return
}
guard let loadDocument = opmlDocument else {
completion(.success(()))
return
}
guard let children = loadDocument.children else {
return
}
BatchUpdate.shared.perform {
account.loadOPMLItems(children, parentFolder: nil)
}
completion(.success(()))
}
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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) else {
completion(.failure(LocalAccountDelegateError.invalidParameter))
return
}
refreshProgress.addToNumberOfTasksAndRemaining(1)
FeedFinder.find(url: url) { result in
switch result {
case .success(let feedSpecifiers):
guard let bestFeedSpecifier = FeedSpecifier.bestFeed(in: feedSpecifiers),
let url = URL(string: bestFeedSpecifier.urlString) else {
self.refreshProgress.completeTask()
completion(.failure(AccountError.createErrorNotFound))
return
}
if account.hasWebFeed(withURL: bestFeedSpecifier.urlString) {
self.refreshProgress.completeTask()
completion(.failure(AccountError.createErrorAlreadySubscribed))
return
}
let feed = account.createWebFeed(with: nil, url: url.absoluteString, webFeedID: url.absoluteString, homePageURL: nil)
InitialFeedDownloader.download(url) { parsedFeed in
self.refreshProgress.completeTask()
if let parsedFeed = parsedFeed {
account.update(feed, with: parsedFeed, {_ in})
}
feed.editedName = name
container.addWebFeed(feed)
completion(.success(feed))
}
case .failure:
self.refreshProgress.completeTask()
completion(.failure(AccountError.createErrorNotFound))
}
}
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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
completion(.success(()))
}
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func removeWebFeed(for account: Account, with feed: WebFeed, from container: Container, completion: @escaping (Result<Void, Error>) -> Void) {
container.removeWebFeed(feed)
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completion(.success(()))
}
func moveWebFeed(for account: Account, with feed: WebFeed, from: Container, to: Container, completion: @escaping (Result<Void, Error>) -> Void) {
from.removeWebFeed(feed)
to.addWebFeed(feed)
completion(.success(()))
}
func addWebFeed(for account: Account, with feed: WebFeed, to container: Container, completion: @escaping (Result<Void, Error>) -> Void) {
container.addWebFeed(feed)
completion(.success(()))
}
func restoreWebFeed(for account: Account, feed: WebFeed, container: Container, completion: @escaping (Result<Void, Error>) -> Void) {
container.addWebFeed(feed)
completion(.success(()))
}
func addFolder(for account: Account, name: String, completion: @escaping (Result<Folder, Error>) -> Void) {
if let folder = account.ensureFolder(with: name) {
completion(.success(folder))
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} else {
completion(.failure(FeedbinAccountDelegateError.invalidParameter))
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}
}
func renameFolder(for account: Account, with folder: Folder, to name: String, completion: @escaping (Result<Void, Error>) -> Void) {
folder.name = name
completion(.success(()))
}
func removeFolder(for account: Account, with folder: Folder, completion: @escaping (Result<Void, Error>) -> Void) {
account.removeFolder(folder)
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completion(.success(()))
}
func restoreFolder(for account: Account, folder: Folder, completion: @escaping (Result<Void, Error>) -> Void) {
account.addFolder(folder)
completion(.success(()))
}
func markArticles(for account: Account, articles: Set<Article>, statusKey: ArticleStatus.Key, flag: Bool) -> Set<Article>? {
return try? account.update(articles, statusKey: statusKey, flag: flag)
}
func accountDidInitialize(_ account: Account) {
}
func accountWillBeDeleted(_ account: Account) {
}
static func validateCredentials(transport: Transport, credentials: Credentials, endpoint: URL? = nil, completion: (Result<Credentials?, Error>) -> Void) {
return completion(.success(nil))
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}
// MARK: Suspend and Resume (for iOS)
func suspendNetwork() {
refresher.suspend()
}
func suspendDatabase() {
// Nothing to do
}
func resume() {
refresher.resume()
}
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}