81 lines
2.6 KiB
Swift
81 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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import CoreData
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class SavedDataManager: Codable {
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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 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 nil
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}
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static func destroy() throws {
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try FileManager.default.removeItem(at: archiveURL)
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}
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private init() {}
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private(set) var savedHashtags: [String: [Hashtag]] = [:]
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private(set) var savedInstances: [String: [URL]] = [:]
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var accountIDs: Set<String> {
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var s = Set<String>()
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savedHashtags.keys.forEach { s.insert($0) }
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savedInstances.keys.forEach { s.insert($0) }
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return s
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}
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private func save() {
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let encoder = PropertyListEncoder()
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let data = try? encoder.encode(self)
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try? data?.write(to: SavedDataManager.archiveURL, options: .noFileProtection)
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}
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func migrateToCoreData(accountID: String, context: NSManagedObjectContext) throws {
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var changed = false
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if let hashtags = savedHashtags[accountID] {
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let objects: [[String: Any]] = hashtags.map {
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["url": $0.url, "name": $0.name]
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}
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let hashtagsReq = NSBatchInsertRequest(entity: SavedHashtag.entity(), objects: objects)
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try context.execute(hashtagsReq)
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savedHashtags.removeValue(forKey: accountID)
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changed = true
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}
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if let instances = savedInstances[accountID] {
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let objects = instances.map {
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["url": $0]
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}
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let instancesReq = NSBatchInsertRequest(entity: SavedInstance.entity(), objects: objects)
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try context.execute(instancesReq)
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savedInstances.removeValue(forKey: accountID)
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changed = true
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}
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if changed {
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save()
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}
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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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