89 lines
2.6 KiB
Swift
89 lines
2.6 KiB
Swift
//
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// SavedDataManager.swift
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// Tusker
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//
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// Created by Shadowfacts on 12/19/19.
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// Copyright © 2019 Shadowfacts. All rights reserved.
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//
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import Foundation
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import Pachyderm
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class SavedDataManager: Codable {
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private(set) static var shared: SavedDataManager = load()
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private static var documentsDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
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private static var archiveURL = SavedDataManager.documentsDirectory.appendingPathComponent("saved_data").appendingPathExtension("plist")
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static func save() {
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DispatchQueue.global(qos: .utility).async {
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let encoder = PropertyListEncoder()
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let data = try? encoder.encode(shared)
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try? data?.write(to: archiveURL, options: .noFileProtection)
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}
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}
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static func load() -> SavedDataManager {
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let decoder = PropertyListDecoder()
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if let data = try? Data(contentsOf: archiveURL),
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let savedHashtagsManager = try? decoder.decode(Self.self, from: data) {
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return savedHashtagsManager
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}
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return SavedDataManager()
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}
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private init() {}
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private var savedHashtags: [Hashtag] = [] {
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didSet {
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SavedDataManager.save()
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NotificationCenter.default.post(name: .savedHashtagsChanged, object: nil)
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}
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}
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var sortedHashtags: [Hashtag] {
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return savedHashtags.sorted(by: { $0.name < $1.name })
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}
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private(set) var savedInstances: [URL] = [] {
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didSet {
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SavedDataManager.save()
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NotificationCenter.default.post(name: .savedInstancesChanged, object: nil)
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}
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}
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func isSaved(hashtag: Hashtag) -> Bool {
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return savedHashtags.contains(hashtag)
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}
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func add(hashtag: Hashtag) {
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if isSaved(hashtag: hashtag) {
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return
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}
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savedHashtags.append(hashtag)
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}
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func remove(hashtag: Hashtag) {
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guard isSaved(hashtag: hashtag) else { return }
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savedHashtags.removeAll(where: { $0.name == hashtag.name })
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}
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func isSaved(instance url: URL) -> Bool {
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return savedInstances.contains(url)
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}
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func add(instance url: URL) {
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if isSaved(instance: url) { return }
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savedInstances.append(url)
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}
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func remove(instance url: URL) {
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guard isSaved(instance: url) else { return }
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savedInstances.removeAll(where: { $0 == url })
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}
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}
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extension Foundation.Notification.Name {
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static let savedHashtagsChanged = Notification.Name("savedHashtagsChanged")
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static let savedInstancesChanged = Notification.Name("savedInstancesChanged")
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}
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