105 lines
4.5 KiB
Swift
105 lines
4.5 KiB
Swift
// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
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import Foundation
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import GRDB
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import DifferenceKit
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import SessionUIKit
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import SessionMessagingKit
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import SessionUtilitiesKit
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class NotificationSoundViewModel: SettingsTableViewModel<NotificationSettingsViewModel.Section, Preferences.Sound> {
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private var audioPlayer: OWSAudioPlayer?
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private var currentSelection: Preferences.Sound?
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deinit {
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self.audioPlayer?.stop()
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self.audioPlayer = nil
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}
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// MARK: - Section
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public enum Section: SettingSection {
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case content
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var title: String { return "" } // No title
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}
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// MARK: - Content
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override var title: String { "NOTIFICATIONS_STYLE_SOUND_TITLE".localized() }
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private var _settingsData: [SectionModel] = []
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public override var settingsData: [SectionModel] { _settingsData }
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public override var observableSettingsData: ObservableData { _observableSettingsData }
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/// This is all the data the screen needs to populate itself, please see the following link for tips to help optimise
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/// performance https://github.com/groue/GRDB.swift#valueobservation-performance
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///
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/// **Note:** This observation will be triggered twice immediately (and be de-duped by the `removeDuplicates`)
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/// this is due to the behaviour of `ValueConcurrentObserver.asyncStartObservation` which triggers it's own
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/// fetch (after the ones in `ValueConcurrentObserver.asyncStart`/`ValueConcurrentObserver.syncStart`)
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/// just in case the database has changed between the two reads - unfortunately it doesn't look like there is a way to prevent this
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private lazy var _observableSettingsData: ObservableData = ValueObservation
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.trackingConstantRegion { [weak self] db -> [SectionModel] in
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self?.currentSelection = (self?.currentSelection ?? db[.defaultNotificationSound])
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return [
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SectionModel(
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model: .content,
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elements: Preferences.Sound.notificationSounds
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.map { sound in
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SettingInfo(
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id: sound,
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title: {
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guard sound != .note else {
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return String(
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format: "SETTINGS_AUDIO_DEFAULT_TONE_LABEL_FORMAT".localized(),
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sound.displayName
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)
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}
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return sound.displayName
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}(),
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action: .listSelection(
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isSelected: { (self?.currentSelection == sound) },
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storedSelection: (db[.defaultNotificationSound] == sound),
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shouldAutoSave: false,
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selectValue: {
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self?.currentSelection = sound
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// Play the sound (to prevent UI lag we dispatch this to the next
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// run loop
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DispatchQueue.main.async {
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self?.audioPlayer?.stop()
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self?.audioPlayer = SMKSound.audioPlayer(
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for: sound.rawValue,
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audioBehavior: .playback
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)
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self?.audioPlayer?.isLooping = false
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self?.audioPlayer?.play()
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}
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}
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)
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)
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}
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)
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]
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}
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.removeDuplicates()
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// MARK: - Functions
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public override func updateSettings(_ updatedSettings: [SectionModel]) {
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self._settingsData = updatedSettings
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}
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public override func saveChanges() {
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guard let currentSelection: Preferences.Sound = self.currentSelection else { return }
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Storage.shared.write { db in
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db[.defaultNotificationSound] = currentSelection
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}
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}
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}
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