Add filtering to location selection

ios/CHANGELOG.md

@@ -44,6 +44,8 @@ Line wrap the file at 100 chars.                                              Th
 - Rotate public key from within packet tunnel when it detects that the key stored on backend does
   not match the one stored on device.
 - Add WireGuard port selection to settings.
+- Add redeeming voucher code on account view.
+- Add filtering on ownership and provider to location selection view.
 
 ## [2023.2 - 2023-04-03]
 ### Changed

ios/MullvadTypes/RelayConstraints.swift

@@ -25,17 +25,20 @@ public struct RelayConstraints: Codable, Equatable, CustomDebugStringConvertible
 
     // Added in 2023.3
     public var port: RelayConstraint<UInt16>
+    public var filter: RelayConstraint<RelayFilter>
 
     public var debugDescription: String {
         "RelayConstraints { location: \(location), port: \(port) }"
     }
 
     public init(
         location: RelayConstraint<RelayLocation> = .only(.country("se")),
-        port: RelayConstraint<UInt16> = .any
+        port: RelayConstraint<UInt16> = .any,
+        filter: RelayConstraint<RelayFilter> = .any
     ) {
         self.location = location
         self.port = port
+        self.filter = filter
     }
 
     public init(from decoder: Decoder) throws {
@@ -44,5 +47,6 @@ public struct RelayConstraints: Codable, Equatable, CustomDebugStringConvertible
 
         // Added in 2023.3
         port = try container.decodeIfPresent(RelayConstraint<UInt16>.self, forKey: .port) ?? .any
+        filter = try container.decodeIfPresent(RelayConstraint<RelayFilter>.self, forKey: .filter) ?? .any
     }
 }

ios/MullvadTypes/RelayFilter.swift

@@ -0,0 +1,25 @@
+//
+//  RelayFilter.swift
+//  MullvadVPN
+//
+//  Created by Jon Petersson on 2023-06-08.
+//  Copyright © 2023 Mullvad VPN AB. All rights reserved.
+//
+
+import Foundation
+
+public struct RelayFilter: Codable, Equatable {
+    public enum Ownership: Codable {
+        case any
+        case owned
+        case rented
+    }
+
+    public var ownership: Ownership
+    public var providers: RelayConstraint<[String]>
+
+    public init(ownership: Ownership = .any, providers: RelayConstraint<[String]> = .any) {
+        self.ownership = ownership
+        self.providers = providers
+    }
+}

ios/MullvadVPN/Coordinators/RelayFilterCoordinator.swift

@@ -0,0 +1,89 @@
+//
+//  RelayFilterCoordinator.swift
+//  MullvadVPN
+//
+//  Created by Jon Petersson on 2023-06-14.
+//  Copyright © 2023 Mullvad VPN AB. All rights reserved.
+//
+
+import MullvadTypes
+import RelayCache
+import Routing
+import UIKit
+
+class RelayFilterCoordinator: Coordinator, Presentable, RelayCacheTrackerObserver {
+    private let tunnelManager: TunnelManager
+    private let relayCacheTracker: RelayCacheTracker
+    private var cachedRelays: CachedRelays?
+
+    let navigationController: UINavigationController
+
+    var presentedViewController: UIViewController {
+        return navigationController
+    }
+
+    var relayFilterViewController: RelayFilterViewController? {
+        return navigationController.viewControllers.first {
+            $0 is RelayFilterViewController
+        } as? RelayFilterViewController
+    }
+
+    var relayFilter: RelayFilter {
+        switch tunnelManager.settings.relayConstraints.filter {
+        case .any:
+            return RelayFilter()
+        case let .only(filter):
+            return filter
+        }
+    }
+
+    var didFinish: ((RelayFilterCoordinator, RelayFilter?) -> Void)?
+
+    init(
+        navigationController: UINavigationController,
+        tunnelManager: TunnelManager,
+        relayCacheTracker: RelayCacheTracker
+    ) {
+        self.navigationController = navigationController
+        self.tunnelManager = tunnelManager
+        self.relayCacheTracker = relayCacheTracker
+    }
+
+    func start() {
+        let relayFilterViewController = RelayFilterViewController()
+
+        relayFilterViewController.onApplyFilter = { [weak self] filter in
+            guard let self else { return }
+
+            var relayConstraints = tunnelManager.settings.relayConstraints
+            relayConstraints.filter = .only(filter)
+
+            tunnelManager.setRelayConstraints(relayConstraints)
+
+            didFinish?(self, filter)
+        }
+
+        relayFilterViewController.didFinish = { [weak self] in
+            guard let self else { return }
+
+            didFinish?(self, nil)
+        }
+
+        relayCacheTracker.addObserver(self)
+
+        if let cachedRelays = try? relayCacheTracker.getCachedRelays() {
+            self.cachedRelays = cachedRelays
+            relayFilterViewController.setCachedRelays(cachedRelays, filter: relayFilter)
+        }
+
+        navigationController.pushViewController(relayFilterViewController, animated: false)
+    }
+
+    func relayCacheTracker(
+        _ tracker: RelayCacheTracker,
+        didUpdateCachedRelays cachedRelays: CachedRelays
+    ) {
+        self.cachedRelays = cachedRelays
+        relayFilterViewController?.setCachedRelays(cachedRelays, filter: relayFilter)
+    }
+}

ios/MullvadVPN/Coordinators/SelectLocationCoordinator.swift

@@ -11,15 +11,31 @@ import RelayCache
 import Routing
 import UIKit
 
-class SelectLocationCoordinator: Coordinator, Presentable, RelayCacheTrackerObserver {
+class SelectLocationCoordinator: Coordinator, Presentable, Presenting, RelayCacheTrackerObserver {
+    private let tunnelManager: TunnelManager
+    private let relayCacheTracker: RelayCacheTracker
+    private var cachedRelays: CachedRelays?
+
     let navigationController: UINavigationController
 
     var presentedViewController: UIViewController {
         navigationController
     }
 
-    private let tunnelManager: TunnelManager
-    private let relayCacheTracker: RelayCacheTracker
+    var selectLocationViewController: SelectLocationViewController? {
+        return navigationController.viewControllers.first {
+            $0 is SelectLocationViewController
+        } as? SelectLocationViewController
+    }
+
+    var relayFilter: RelayFilter {
+        switch tunnelManager.settings.relayConstraints.filter {
+        case .any:
+            return RelayFilter()
+        case let .only(filter):
+            return filter
+        }
+    }
 
     var didFinish: ((SelectLocationCoordinator, RelayLocation?) -> Void)?
 
@@ -34,9 +50,9 @@ class SelectLocationCoordinator: Coordinator, Presentable, RelayCacheTrackerObse
     }
 
     func start() {
-        let controller = SelectLocationViewController()
+        let selectLocationViewController = SelectLocationViewController()
 
-        controller.didSelectRelay = { [weak self] relay in
+        selectLocationViewController.didSelectRelay = { [weak self] relay in
             guard let self else { return }
 
             var relayConstraints = tunnelManager.settings.relayConstraints
@@ -49,7 +65,25 @@ class SelectLocationCoordinator: Coordinator, Presentable, RelayCacheTrackerObse
             didFinish?(self, relay)
         }
 
-        controller.didFinish = { [weak self] in
+        selectLocationViewController.navigateToFilter = { [weak self] in
+            guard let self else { return }
+
+            let coordinator = makeRelayFilterCoordinator(forModalPresentation: true)
+            coordinator.start()
+
+            presentChild(coordinator, animated: true)
+        }
+
+        selectLocationViewController.didUpdateFilter = { [weak self] filter in
+            guard let self else { return }
+
+            var relayConstraints = tunnelManager.settings.relayConstraints
+            relayConstraints.filter = .only(filter)
+
+            tunnelManager.setRelayConstraints(relayConstraints)
+        }
+
+        selectLocationViewController.didFinish = { [weak self] in
             guard let self else { return }
 
             didFinish?(self, nil)
@@ -58,21 +92,42 @@ class SelectLocationCoordinator: Coordinator, Presentable, RelayCacheTrackerObse
         relayCacheTracker.addObserver(self)
 
         if let cachedRelays = try? relayCacheTracker.getCachedRelays() {
-            controller.setCachedRelays(cachedRelays)
+            self.cachedRelays = cachedRelays
+            selectLocationViewController.setCachedRelays(cachedRelays, filter: relayFilter)
         }
 
-        controller.relayLocation = tunnelManager.settings.relayConstraints.location.value
+        selectLocationViewController.relayLocation = tunnelManager.settings.relayConstraints.location.value
+
+        navigationController.pushViewController(selectLocationViewController, animated: false)
+    }
+
+    private func makeRelayFilterCoordinator(forModalPresentation isModalPresentation: Bool)
+        -> RelayFilterCoordinator {
+        let navigationController = CustomNavigationController()
+
+        let relayFilterCoordinator = RelayFilterCoordinator(
+            navigationController: navigationController,
+            tunnelManager: tunnelManager,
+            relayCacheTracker: relayCacheTracker
+        )
+
+        relayFilterCoordinator.didFinish = { [weak self] coordinator, filter in
+            if let cachedRelays = self?.cachedRelays, let filter {
+                self?.selectLocationViewController?.setCachedRelays(cachedRelays, filter: filter)
+            }
+
+            coordinator.dismiss(animated: true)
+        }
 
-        navigationController.pushViewController(controller, animated: false)
+        return relayFilterCoordinator
     }
 
     func relayCacheTracker(
         _ tracker: RelayCacheTracker,
         didUpdateCachedRelays cachedRelays: CachedRelays
     ) {
-        guard let controller = navigationController.viewControllers
-            .first as? SelectLocationViewController else { return }
+        self.cachedRelays = cachedRelays
 
-        controller.setCachedRelays(cachedRelays)
+        selectLocationViewController?.setCachedRelays(cachedRelays, filter: relayFilter)
     }
 }

ios/MullvadVPN/Extensions/Collection+Sorting.swift

@@ -0,0 +1,21 @@
+//
+//  Collection+Sorting.swift
+//  MullvadVPN
+//
+//  Created by Jon Petersson on 2023-06-14.
+//  Copyright © 2023 Mullvad VPN AB. All rights reserved.
+//
+
+import Foundation
+
+extension Collection where Element: StringProtocol {
+    public func caseInsensitiveSorted() -> [Element] {
+        sorted { $0.caseInsensitiveCompare($1) == .orderedAscending }
+    }
+}
+
+extension MutableCollection where Element: StringProtocol, Self: RandomAccessCollection {
+    public mutating func caseInsensitiveSort() {
+        sort { $0.caseInsensitiveCompare($1) == .orderedAscending }
+    }
+}

ios/MullvadVPN/Presentation controllers/FormsheetPresentationController.swift

@@ -181,7 +181,7 @@ class FormSheetPresentationController: UIPresentationController {
                       let containerView,
                       !isInFullScreenPresentation else { return }
                 let frame = view.frame
-                let bottomMarginFromKeyboard = adjustment > 0 ? UIMetrics.sectionSpacing : 0
+                let bottomMarginFromKeyboard = adjustment > 0 ? UIMetrics.TableView.sectionSpacing : 0
                 view.frame = CGRect(
                     origin: CGPoint(
                         x: frame.origin.x,