Refactoring II.

- Filter by date range
- SyncUpdate tasks run fully asynchronous in background
- Move tableView manipulations into FilterPipelineDelegate
- Move SyncUpdate notification into SyncUpdateDelegate
- Fix: sync cache before persisting a recording
- Restructuring GroupedDomainDataSource
- Performance: db logs queries use rowids instead of timestamps
- Add 'now' button to DatePickerAlert

main/Settings/TVCFilter.swift

@@ -2,23 +2,16 @@ import UIKit
 
 class TVCFilter: UITableViewController, EditActionsRemove {
 	var currentFilter: FilterOptions = .none // set by segue
-	private var dataSource: [String] = []
+	private lazy var dataSource = DomainFilter.list(where: currentFilter)
 	
 	override func viewDidLoad() {
 		super.viewDidLoad()
 		NotifyDNSFilterChanged.observe(call: #selector(didChangeDomainFilter), on: self)
-		reloadDataSource()
-	}
-
-	func reloadDataSource() {
-		dataSource = DomainFilter.list(where: currentFilter)
-		tableView.reloadData()
 	}
 	
 	@objc func didChangeDomainFilter(_ notification: Notification) {
 		guard let domain = notification.object as? String else {
-			reloadDataSource()
-			return
+			preconditionFailure("Domain independent filter reset not implemented")
 		}
 		if DomainFilter[domain]?.contains(currentFilter) ?? false {
 			let i = dataSource.binTreeIndex(of: domain, compare: (<))!

main/Settings/TVCSettings.swift

@@ -42,10 +42,7 @@ class TVCSettings: UITableViewController {
 			"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
-				DispatchQueue.global().async {
-					try? AppDB?.dnsLogsDeleteAll()
-					NotifyLogHistoryReset.postAsyncMain()
-				}
+				TheGreatDestroyer.deleteAllLogs()
 		}.presentIn(self)
 	}