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//
// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
//
import UIKit
@objc
public class BackupRestoreViewController: OWSTableViewController {
private var hasBegunImport = false
// MARK: - Dependencies
private var backup: OWSBackup {
return AppEnvironment.shared.backup
}
// MARK: -
override public func loadView() {
super.loadView()
navigationItem.title = NSLocalizedString("SETTINGS_BACKUP", comment: "Label for the backup view in app settings.")
navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: .cancel, target: self, action: #selector(didPressCancelButton))
}
override public func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(self,
selector: #selector(backupStateDidChange),
name: NSNotification.Name(NSNotificationNameBackupStateDidChange),
object: nil)
updateTableContents()
}
private func updateTableContents() {
if hasBegunImport {
updateProgressContents()
} else {
updateDecisionContents()
}
}
private func updateDecisionContents() {
let contents = OWSTableContents()
let section = OWSTableSection()
section.headerTitle = NSLocalizedString("BACKUP_RESTORE_DECISION_TITLE", comment: "Label for the backup restore decision section.")
section.add(OWSTableItem.actionItem(withText: NSLocalizedString("CHECK_FOR_BACKUP_DO_NOT_RESTORE",
comment: "The label for the 'do not restore backup' button."), actionBlock: { [weak self] in
guard let strongSelf = self else {
return
}
strongSelf.cancelAndDismiss()
}))
section.add(OWSTableItem.actionItem(withText: NSLocalizedString("CHECK_FOR_BACKUP_RESTORE",
comment: "The label for the 'restore backup' button."), actionBlock: { [weak self] in
guard let strongSelf = self else {
return
}
strongSelf.startImport()
}))
contents.addSection(section)
self.contents = contents
}
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private var progressFormatter: NumberFormatter = {
let numberFormatter = NumberFormatter()
numberFormatter.numberStyle = .percent
numberFormatter.maximumFractionDigits = 0
numberFormatter.multiplier = 1
return numberFormatter
}()
private func updateProgressContents() {
let contents = OWSTableContents()
let section = OWSTableSection()
section.add(OWSTableItem.label(withText: NSLocalizedString("BACKUP_RESTORE_STATUS", comment: "Label for the backup restore status."), accessoryText: NSStringForBackupImportState(backup.backupImportState)))
if backup.backupImportState == .inProgress {
if let backupImportDescription = backup.backupImportDescription {
section.add(OWSTableItem.label(withText: NSLocalizedString("BACKUP_RESTORE_DESCRIPTION", comment: "Label for the backup restore description."), accessoryText: backupImportDescription))
}
if let backupImportProgress = backup.backupImportProgress {
let progressInt = backupImportProgress.floatValue * 100
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if let progressString = progressFormatter.string(from: NSNumber(value: progressInt)) {
section.add(OWSTableItem.label(withText: NSLocalizedString("BACKUP_RESTORE_PROGRESS", comment: "Label for the backup restore progress."), accessoryText: progressString))
} else {
owsFailDebug("Could not format progress: \(progressInt)")
}
}
}
contents.addSection(section)
self.contents = contents
// TODO: Add cancel button.
}
// MARK: Helpers
@objc
private func didPressCancelButton(sender: UIButton) {
Logger.info("")
// TODO: Cancel import.
cancelAndDismiss()
}
@objc
private func cancelAndDismiss() {
Logger.info("")
backup.setHasPendingRestoreDecision(false)
showHomeView()
}
@objc
private func startImport() {
Logger.info("")
hasBegunImport = true
backup.tryToImport()
}
private func showHomeView() {
// In production, this view will never be presented in a modal.
// During testing (debug UI, etc.), it may be a modal.
let isModal = navigationController?.presentingViewController != nil
if isModal {
dismiss(animated: true, completion: {
SignalApp.shared().showHomeView()
})
} else {
SignalApp.shared().showHomeView()
}
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NotificationCenter.default.removeObserver(self)
}
// MARK: - Notifications
@objc func backupStateDidChange() {
AssertIsOnMainThread()
Logger.verbose("backup.backupImportState: \(NSStringForBackupImportState(backup.backupImportState))")
Logger.flush()
if backup.backupImportState == .succeeded {
backup.setHasPendingRestoreDecision(false)
showHomeView()
} else {
updateTableContents()
}
}
// MARK: Orientation
public override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
return .portrait
}
}