mastodon-app-ufficiale-ipho.../MastodonSDK/Sources/MastodonCommon/Preference/Preference+Notification.swift

54 lines
1.6 KiB
Swift

//
// UserDefaults+Notification.swift
// MastodonCommon
//
// Created by Cirno MainasuK on 2021-10-9.
//
import UIKit
import CryptoKit
import MastodonExtension
extension UserDefaults {
// always use hash value (SHA256) from accessToken as key
private static func deriveKey(from accessToken: String, prefix: String) -> String {
let digest = SHA256.hash(data: Data(accessToken.utf8))
let bytes = [UInt8](digest)
let hex = bytes.toHexString()
let key = prefix + "@" + hex
return key
}
private static let notificationCountKeyPrefix = "notification_count"
public func getNotificationCountWithAccessToken(accessToken: String) -> Int {
let prefix = UserDefaults.notificationCountKeyPrefix
let key = UserDefaults.deriveKey(from: accessToken, prefix: prefix)
return integer(forKey: key)
}
public func setNotificationCountWithAccessToken(accessToken: String, value: Int) {
let prefix = UserDefaults.notificationCountKeyPrefix
let key = UserDefaults.deriveKey(from: accessToken, prefix: prefix)
setValue(value, forKey: key)
}
public func increaseNotificationCount(accessToken: String) {
let count = getNotificationCountWithAccessToken(accessToken: accessToken)
setNotificationCountWithAccessToken(accessToken: accessToken, value: count + 1)
}
}
extension UserDefaults {
@objc public dynamic var notificationBadgeCount: Int {
get {
register(defaults: [#function: 0])
return integer(forKey: #function)
}
set { self[#function] = newValue }
}
}