Privacy: Auto-delete logs (no functionality yet)

main/Settings/TVCSettings.swift

@@ -6,6 +6,7 @@ class TVCSettings: UITableViewController {
 	@IBOutlet var vpnToggle: UISwitch!
 	@IBOutlet var cellDomainsIgnored: UITableViewCell!
 	@IBOutlet var cellDomainsBlocked: UITableViewCell!
+	@IBOutlet var cellPrivacyAutoDelete: UITableViewCell!
 	
 	override func viewDidLoad() {
 		super.viewDidLoad()
@@ -15,37 +16,13 @@ class TVCSettings: UITableViewController {
 		reloadDataSource()
 	}
 	
-	@objc func reloadDataSource() {
-		let (blocked, ignored) = DomainFilter.counts()
-		cellDomainsIgnored.detailTextLabel?.text = "\(ignored) Domains"
-		cellDomainsBlocked.detailTextLabel?.text = "\(blocked) Domains"
-	}
 	
-	@IBAction func toggleVPNProxy(_ sender: UISwitch) {
+	// MARK: - VPN Proxy Settings
+	
+	@IBAction private func toggleVPNProxy(_ sender: UISwitch) {
 		appDelegate.setProxyEnabled(sender.isOn)
 	}
 	
-	@IBAction func exportDB(_ sender: Any) {
-		let sheet = UIActivityViewController(activityItems: [URL.internalDB()], applicationActivities: nil)
-		self.present(sheet, animated: true)
-	}
-	
-	@IBAction func resetTutorialAlerts(_ sender: UIButton) {
-		Pref.DidShowTutorial.Welcome = false
-		Pref.DidShowTutorial.Recordings = false
-		Alert(title: sender.titleLabel?.text,
-			  text: "\nDone.\n\nYou may need to restart the application.").presentIn(self)
-	}
-	
-	@IBAction func clearDatabaseResults(_ sender: Any) {
-		AskAlert(title: "Clear results?", text:
-			"You are about to delete all results that have been logged in the past. " +
-			"Your preferences for blocked and ignored domains are preserved.\n" +
-			"Continue?", buttonText: "Delete", buttonStyle: .destructive) { _ in
-				TheGreatDestroyer.deleteAllLogs()
-		}.presentIn(self)
-	}
-	
 	@objc func vpnStateChanged(_ notification: Notification) {
 		changedState(notification.object as! VPNState)
 	}
@@ -55,6 +32,17 @@ class TVCSettings: UITableViewController {
 		vpnToggle.onTintColor = (newState == .inbetween ? .systemYellow : nil)
 	}
 	
+	
+	// MARK: - Logging Filter
+	
+	@objc func reloadDataSource() {
+		let (blocked, ignored) = DomainFilter.counts()
+		cellDomainsIgnored.detailTextLabel?.text = "\(ignored) Domains"
+		cellDomainsBlocked.detailTextLabel?.text = "\(blocked) Domains"
+		let (one, two) = autoDeleteSelection([1, 7, 31])
+		cellPrivacyAutoDelete.detailTextLabel?.text = autoDeleteString(one, unit: two)
+	}
+	
 	override func tableView(_ tableView: UITableView, accessoryButtonTappedForRowWith indexPath: IndexPath) {
 		let t:String, d: String
 		switch tableView.cellForRow(at: indexPath)?.reuseIdentifier {
@@ -82,4 +70,74 @@ class TVCSettings: UITableViewController {
 			break
 		}
 	}
+	
+	
+	// MARK: - Privacy
+	
+	override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
+		if let cell = tableView.cellForRow(at: indexPath), cell === cellPrivacyAutoDelete {
+			let multiplier = [1, 7, 31]
+			let (one, two) = autoDeleteSelection(multiplier)
+			
+			let picker = DurationPickerAlert(
+				title: "Auto-delete logs",
+				detail: "Logs will be deleted on app launch or periodically as long as the VPN is running.",
+				options: [(0...30).map{"\($0)"}, ["Days", "Weeks", "Months"]],
+				widths: [0.4, 0.6])
+			picker.pickerView.setSelection([min(30, one), two])
+			picker.present(in: self) {
+				PrefsShared.AutoDeleteLogsDays = $1[0] * multiplier[$1[1]]
+				cell.detailTextLabel?.text = autoDeleteString($1[0], unit: $1[1])
+				// TODO: notify VPN and local delete timer
+			}
+		}
+	}
+	
+	
+	// MARK: - Reset Settings
+	
+	@IBAction private func resetTutorialAlerts(_ sender: UIButton) {
+		Pref.DidShowTutorial.Welcome = false
+		Pref.DidShowTutorial.Recordings = false
+		Alert(title: sender.titleLabel?.text,
+			  text: "\nDone.\n\nYou may need to restart the application.").presentIn(self)
+	}
+	
+	@IBAction private func clearDatabaseResults() {
+		AskAlert(title: "Clear results?", text:
+			"You are about to delete all results that have been logged in the past. " +
+			"Your preferences for blocked and ignored domains are preserved.\n" +
+			"Continue?", buttonText: "Delete", buttonStyle: .destructive) { _ in
+				TheGreatDestroyer.deleteAllLogs()
+		}.presentIn(self)
+	}
+	
+	
+	// MARK: - Advanced
+	
+	@IBAction private func exportDB() {
+		let sheet = UIActivityViewController(activityItems: [URL.internalDB()], applicationActivities: nil)
+		self.present(sheet, animated: true)
+	}
+}
+
+
+//  -------------------------------
+// |
+// |    MARK: - Helper methods
+// |
+//  -------------------------------
+
+private func autoDeleteSelection(_ multiplier: [Int]) -> (Int, Int) {
+	let current = PrefsShared.AutoDeleteLogsDays
+	let snd = multiplier.lastIndex { current % $0 == 0 }! // make sure 1 is in list
+	return (current / multiplier[snd], snd)
+}
+
+private func autoDeleteString(_ num: Int, unit: Int) -> String {
+	switch num {
+	case 0:  return "Never"
+	case 1:  return "1 \(["Day", "Week", "Month"][unit])"
+	default: return "\(num) \(["Days", "Weeks", "Months"][unit])"
+	}
 }