Extract router and break it down on smaller files

6 files changed, 419 insertions, 361 deletions

diff --git a/ios/MullvadVPN.xcodeproj/project.pbxproj b/ios/MullvadVPN.xcodeproj/project.pbxproj
index 33ac96d9fd..c8b8755373 100644
--- a/ios/MullvadVPN.xcodeproj/project.pbxproj
+++ b/ios/MullvadVPN.xcodeproj/project.pbxproj
@@ -53,6 +53,10 @@
 		068CE5782927BE4800A068BB /* Migration.swift in Sources */ = {isa = PBXBuildFile; fileRef = 068CE5732927B7A400A068BB /* Migration.swift */; };
 		0697D6E728F01513007A9E99 /* TransportMonitor.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0697D6E628F01513007A9E99 /* TransportMonitor.swift */; };
 		06AC116228F94C450037AF9A /* ApplicationConfiguration.swift in Sources */ = {isa = PBXBuildFile; fileRef = 58BFA5CB22A7CE1F00A6173D /* ApplicationConfiguration.swift */; };
+		5802EBC52A8E44AC00E5CE4C /* AppRoutes.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5802EBC42A8E44AC00E5CE4C /* AppRoutes.swift */; };
+		5802EBC72A8E457A00E5CE4C /* AppRouteProtocol.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5802EBC62A8E457A00E5CE4C /* AppRouteProtocol.swift */; };
+		5802EBC92A8E45BA00E5CE4C /* ApplicationRouterDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5802EBC82A8E45BA00E5CE4C /* ApplicationRouterDelegate.swift */; };
+		5802EBCB2A8E45DC00E5CE4C /* ApplicationRouterTypes.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5802EBCA2A8E45DC00E5CE4C /* ApplicationRouterTypes.swift */; };
 		5803B4B02940A47300C23744 /* TunnelConfiguration.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5803B4AF2940A47300C23744 /* TunnelConfiguration.swift */; };
 		5803B4B22940A48700C23744 /* TunnelStore.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5803B4B12940A48700C23744 /* TunnelStore.swift */; };
 		5806767C27048E9B00C858CB /* PacketTunnelProvider.swift in Sources */ = {isa = PBXBuildFile; fileRef = 58CE5E7B224146470008646E /* PacketTunnelProvider.swift */; };
@@ -933,6 +937,10 @@
 		06FAE67B28F83CA50033DD93 /* REST.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = REST.swift; sourceTree = "<group>"; };
 		06FAE67C28F83CA50033DD93 /* URLSessionTransport.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = URLSessionTransport.swift; sourceTree = "<group>"; };
 		06FAE67D28F83CA50033DD93 /* RESTTransport.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RESTTransport.swift; sourceTree = "<group>"; };
+		5802EBC42A8E44AC00E5CE4C /* AppRoutes.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppRoutes.swift; sourceTree = "<group>"; };
+		5802EBC62A8E457A00E5CE4C /* AppRouteProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AppRouteProtocol.swift; sourceTree = "<group>"; };
+		5802EBC82A8E45BA00E5CE4C /* ApplicationRouterDelegate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ApplicationRouterDelegate.swift; sourceTree = "<group>"; };
+		5802EBCA2A8E45DC00E5CE4C /* ApplicationRouterTypes.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ApplicationRouterTypes.swift; sourceTree = "<group>"; };
 		5803B4AF2940A47300C23744 /* TunnelConfiguration.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TunnelConfiguration.swift; sourceTree = "<group>"; };
 		5803B4B12940A48700C23744 /* TunnelStore.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TunnelStore.swift; sourceTree = "<group>"; };
 		58059DDD28468158002B1049 /* OutputOperation.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OutputOperation.swift; sourceTree = "<group>"; };
@@ -1545,6 +1553,18 @@
 			path = MullvadREST;
 			sourceTree = "<group>";
 		};
+		5802EBC32A8E447000E5CE4C /* Routing */ = {
+			isa = PBXGroup;
+			children = (
+				5893C6FB29C311E9009090D1 /* ApplicationRouter.swift */,
+				5802EBC82A8E45BA00E5CE4C /* ApplicationRouterDelegate.swift */,
+				5802EBCA2A8E45DC00E5CE4C /* ApplicationRouterTypes.swift */,
+				5802EBC62A8E457A00E5CE4C /* AppRouteProtocol.swift */,
+				5802EBC42A8E44AC00E5CE4C /* AppRoutes.swift */,
+			);
+			path = Routing;
+			sourceTree = "<group>";
+		};
 		580F8B88281A79A7002E0998 /* SettingsManager */ = {
 			isa = PBXGroup;
 			children = (
@@ -1649,7 +1669,6 @@
 			children = (
 				583FE02029C1A0B1006E85F9 /* Account */,
 				F0E8E4BF2A602C7D00ED26A3 /* AccountDeletion */,
-				5878F4FA29CDA2D4003D4BE2 /* ChangeLog */,
 				F0E8E4B92A55593300ED26A3 /* CreationAccount */,
 				583FE01D29C197C1006E85F9 /* DeviceList */,
 				583FE02529C1AD0E006E85F9 /* Launch */,
@@ -1690,7 +1709,6 @@
 				7A83C4012A57FAA800DFB83A /* SettingsDNSInfoCell.swift */,
 				584D26C5270C8741004EA533 /* SettingsDNSTextCell.swift */,
 				7A7AD28E29DEDB1C00480EF1 /* SettingsHeaderView.swift */,
-				7A42DEC82A05164100B209BE /* SettingsInputCell.swift */,
 				58677711290976FB006F721F /* SettingsInteractor.swift */,
 				5867770F290975E8006F721F /* SettingsInteractorFactory.swift */,
 				58ACF64A26553C3F00ACE4B7 /* SettingsSwitchCell.swift */,
@@ -2028,7 +2046,6 @@
 				F0E8E4C62A604CBE00ED26A3 /* AccountDeletionCoordinator.swift */,
 				F07C0A042A52D4C3009825CA /* AccountRedeemingVoucherCoordinator.swift */,
 				58BBB39629717E0C00C8DB7C /* ApplicationCoordinator.swift */,
-				5893C6FB29C311E9009090D1 /* ApplicationRouter.swift */,
 				5878F50129CDB989003D4BE2 /* ChangeLogCoordinator.swift */,
 				58CAF9F92983E0C600BE19F7 /* LoginCoordinator.swift */,
 				583FE00D29C0D586006E85F9 /* OutOfTimeCoordinator.swift */,
@@ -2258,6 +2275,7 @@
 				58C76A0A2A338E4300100D75 /* BackgroundTask.swift */,
 				583FE02829C1B079006E85F9 /* Classes */,
 				58C774C929AB543C003A1A56 /* Containers */,
+				5802EBC32A8E447000E5CE4C /* Routing */,
 				58CAF9F22983D32200BE19F7 /* Coordinators */,
 				583FE02329C1AC9F006E85F9 /* Extensions */,
 				A9D96B182A82479700A5C673 /* MigrationManager */,
@@ -3472,6 +3490,7 @@
 				5878A27129091CF20096FC88 /* AccountInteractor.swift in Sources */,
 				068CE5742927B7A400A068BB /* Migration.swift in Sources */,
 				A92ECC282A7802AB0052F1B1 /* StoredDeviceData.swift in Sources */,
+				5802EBC92A8E45BA00E5CE4C /* ApplicationRouterDelegate.swift in Sources */,
 				58CCA010224249A1004F3011 /* TunnelViewController.swift in Sources */,
 				58B26E22294351EA00D5980C /* InAppNotificationProvider.swift in Sources */,
 				5893716A28817A45004EE76C /* DeviceManagementViewController.swift in Sources */,
@@ -3535,6 +3554,7 @@
 				5871FBA0254C26C00051A0A4 /* NSRegularExpression+IPAddress.swift in Sources */,
 				F0E8E4BB2A56C9F100ED26A3 /* WelcomeInteractor.swift in Sources */,
 				5878A27729093A4F0096FC88 /* StorePaymentBlockObserver.swift in Sources */,
+				5802EBC52A8E44AC00E5CE4C /* AppRoutes.swift in Sources */,
 				F07C0A052A52D4C3009825CA /* AccountRedeemingVoucherCoordinator.swift in Sources */,
 				5868585524054096000B8131 /* AppButton.swift in Sources */,
 				5893C6FC29C311E9009090D1 /* ApplicationRouter.swift in Sources */,
@@ -3559,7 +3579,9 @@
 				587A01FC23F1F0BE00B68763 /* SimulatorTunnelProviderHost.swift in Sources */,
 				58CAF9F82983D36800BE19F7 /* Coordinator.swift in Sources */,
 				5819C2172729595500D6EC38 /* SettingsAddDNSEntryCell.swift in Sources */,
+				5802EBC72A8E457A00E5CE4C /* AppRouteProtocol.swift in Sources */,
 				5862805422428EF100F5A6E1 /* TranslucentButtonBlurView.swift in Sources */,
+				5802EBCB2A8E45DC00E5CE4C /* ApplicationRouterTypes.swift in Sources */,
 				587EB66A270EFACB00123C75 /* CharacterSet+IPAddress.swift in Sources */,
 				5888AD83227B11080051EB06 /* SelectLocationCell.swift in Sources */,
 				5891BF1C25E3E3EB006D6FB0 /* Bundle+ProductVersion.swift in Sources */,
diff --git a/ios/MullvadVPN/Routing/AppRouteProtocol.swift b/ios/MullvadVPN/Routing/AppRouteProtocol.swift
new file mode 100644
index 0000000000..9411f65e14
--- /dev/null
+++ b/ios/MullvadVPN/Routing/AppRouteProtocol.swift
@@ -0,0 +1,60 @@
+//
+//  AppRouteProtocol.swift
+//  MullvadVPN
+//
+//  Created by pronebird on 17/08/2023.
+//  Copyright © 2023 Mullvad VPN AB. All rights reserved.
+//
+
+import Foundation
+
+/**
+ Formal protocol describing a group of routes.
+ */
+protocol AppRouteGroupProtocol: Comparable, Equatable, Hashable {
+    /**
+     Returns `true` if group is presented modally, otherwise `false` if group is a part of root view
+     controller.
+     */
+    var isModal: Bool { get }
+
+    /**
+     Defines a modal level that's used for restricting modal presentation.
+
+     A group with higher modal level can be presented above a group with lower level but not the other way around. For example, if a modal group is represented by
+     `UIAlertController`, it should have the highest level (i.e `Int.max`) to prevent other modals from being presented above it, however it enables alert
+     controller to be presented above any other modal.
+     */
+    var modalLevel: Int { get }
+}
+
+/**
+ Default implementation of `Comparable` for `AppRouteGroupProtocol` which compares `modalLevel` of both sides.
+ */
+extension AppRouteGroupProtocol {
+    static func < (lhs: Self, rhs: Self) -> Bool {
+        lhs.modalLevel < rhs.modalLevel
+    }
+}
+
+/**
+ Formal protocol describing a single route.
+ */
+protocol AppRouteProtocol: Equatable, Hashable {
+    associatedtype RouteGroupType: AppRouteGroupProtocol
+
+    /**
+     Returns `true` when only one route of a kind can be displayed.
+     */
+    var isExclusive: Bool { get }
+
+    /**
+     Returns `true` if the route supports sub-navigation.
+     */
+    var supportsSubNavigation: Bool { get }
+
+    /**
+     Navigation group to which the route belongs to.
+     */
+    var routeGroup: RouteGroupType { get }
+}
diff --git a/ios/MullvadVPN/Routing/AppRoutes.swift b/ios/MullvadVPN/Routing/AppRoutes.swift
new file mode 100644
index 0000000000..4fda9aa253
--- /dev/null
+++ b/ios/MullvadVPN/Routing/AppRoutes.swift
@@ -0,0 +1,121 @@
+//
+//  AppRoutes.swift
+//  MullvadVPN
+//
+//  Created by pronebird on 17/08/2023.
+//  Copyright © 2023 Mullvad VPN AB. All rights reserved.
+//
+
+import UIKit
+
+/**
+ Enum type describing groups of routes. Each group is a modal layer with horizontal navigation
+ inside with exception where primary navigation is a part of root controller on iPhone.
+ */
+enum AppRouteGroup: AppRouteGroupProtocol {
+    /**
+     Primary horizontal navigation group.
+     */
+    case primary
+
+    /**
+     Select location group.
+     */
+    case selectLocation
+
+    /**
+     Account group.
+     */
+    case account
+
+    /**
+     Settings group.
+     */
+    case settings
+
+    /**
+     Changelog group.
+     */
+    case changelog
+
+    var isModal: Bool {
+        switch self {
+        case .primary:
+            return UIDevice.current.userInterfaceIdiom == .pad
+
+        case .selectLocation, .account, .settings, .changelog:
+            return true
+        }
+    }
+
+    var modalLevel: Int {
+        switch self {
+        case .primary:
+            return 0
+        case .settings, .account, .selectLocation, .changelog:
+            return 1
+        }
+    }
+}
+
+/**
+ Enum type describing primary application routes.
+ */
+enum AppRoute: AppRouteProtocol {
+    /**
+     Account route.
+     */
+    case account
+
+    /**
+     Settings route. Contains sub-route to display.
+     */
+    case settings(SettingsNavigationRoute?)
+
+    /**
+     Select location route.
+     */
+    case selectLocation
+
+    /**
+     Changelog route.
+     */
+    case changelog
+
+    /**
+     Routes that are part of primary horizontal navigation group.
+     */
+    case tos, login, main, revoked, outOfTime, welcome, setupAccountCompleted
+
+    var isExclusive: Bool {
+        switch self {
+        case .selectLocation, .account, .settings, .changelog:
+            return true
+        default:
+            return false
+        }
+    }
+
+    var supportsSubNavigation: Bool {
+        if case .settings = self {
+            return true
+        } else {
+            return false
+        }
+    }
+
+    var routeGroup: AppRouteGroup {
+        switch self {
+        case .tos, .login, .main, .revoked, .outOfTime, .welcome, .setupAccountCompleted:
+            return .primary
+        case .changelog:
+            return .changelog
+        case .selectLocation:
+            return .selectLocation
+        case .account:
+            return .account
+        case .settings:
+            return .settings
+        }
+    }
+}
diff --git a/ios/MullvadVPN/Coordinators/App/ApplicationRouter.swift b/ios/MullvadVPN/Routing/ApplicationRouter.swift
index 2e77f3d590..b0580d19a6 100644
--- a/ios/MullvadVPN/Coordinators/App/ApplicationRouter.swift
+++ b/ios/MullvadVPN/Routing/ApplicationRouter.swift
@@ -11,364 +11,6 @@ import MullvadLogging
 import UIKit
 
 /**
- Formal protocol describing a group of routes.
- */
-protocol AppRouteGroupProtocol: Comparable, Equatable, Hashable {
-    /**
-     Returns `true` if group is presented modally, otherwise `false` if group is a part of root view
-     controller.
-     */
-    var isModal: Bool { get }
-
-    /**
-     Defines a modal level that's used for restricting modal presentation.
-
-     A group with higher modal level can be presented above a group with lower level but not the other way around. For example, if a modal group is represented by
-     `UIAlertController`, it should have the highest level (i.e `Int.max`) to prevent other modals from being presented above it, however it enables alert
-     controller to be presented above any other modal.
-     */
-    var modalLevel: Int { get }
-}
-
-/**
- Default implementation of `Comparable` for `AppRouteGroupProtocol` which compares `modalLevel` of both sides.
- */
-extension AppRouteGroupProtocol {
-    static func < (lhs: Self, rhs: Self) -> Bool {
-        lhs.modalLevel < rhs.modalLevel
-    }
-}
-
-/**
- Formal protocol describing a single route.
- */
-protocol AppRouteProtocol: Equatable, Hashable {
-    associatedtype RouteGroupType: AppRouteGroupProtocol
-
-    /**
-     Returns `true` when only one route of a kind can be displayed.
-     */
-    var isExclusive: Bool { get }
-
-    /**
-     Returns `true` if the route supports sub-navigation.
-     */
-    var supportsSubNavigation: Bool { get }
-
-    /**
-     Navigation group to which the route belongs to.
-     */
-    var routeGroup: RouteGroupType { get }
-}
-
-/**
- Enum type describing groups of routes. Each group is a modal layer with horizontal navigation
- inside with exception where primary navigation is a part of root controller on iPhone.
- */
-enum AppRouteGroup: AppRouteGroupProtocol {
-    /**
-     Primary horizontal navigation group.
-     */
-    case primary
-
-    /**
-     Select location group.
-     */
-    case selectLocation
-
-    /**
-     Account group.
-     */
-    case account
-
-    /**
-     Settings group.
-     */
-    case settings
-
-    /**
-     Changelog group.
-     */
-    case changelog
-
-    var isModal: Bool {
-        switch self {
-        case .primary:
-            return UIDevice.current.userInterfaceIdiom == .pad
-
-        case .selectLocation, .account, .settings, .changelog:
-            return true
-        }
-    }
-
-    var modalLevel: Int {
-        switch self {
-        case .primary:
-            return 0
-        case .settings, .account, .selectLocation, .changelog:
-            return 1
-        }
-    }
-}
-
-/**
- Enum type describing primary application routes.
- */
-enum AppRoute: AppRouteProtocol {
-    /**
-     Account route.
-     */
-    case account
-
-    /**
-     Settings route. Contains sub-route to display.
-     */
-    case settings(SettingsNavigationRoute?)
-
-    /**
-     Select location route.
-     */
-    case selectLocation
-
-    /**
-     Changelog route.
-     */
-    case changelog
-
-    /**
-     Routes that are part of primary horizontal navigation group.
-     */
-    case tos, login, main, revoked, outOfTime, welcome, setupAccountCompleted
-
-    var isExclusive: Bool {
-        switch self {
-        case .selectLocation, .account, .settings, .changelog:
-            return true
-        default:
-            return false
-        }
-    }
-
-    var supportsSubNavigation: Bool {
-        if case .settings = self {
-            return true
-        } else {
-            return false
-        }
-    }
-
-    var routeGroup: AppRouteGroup {
-        switch self {
-        case .tos, .login, .main, .revoked, .outOfTime, .welcome, .setupAccountCompleted:
-            return .primary
-        case .changelog:
-            return .changelog
-        case .selectLocation:
-            return .selectLocation
-        case .account:
-            return .account
-        case .settings:
-            return .settings
-        }
-    }
-}
-
-/**
- Struct describing a routing request for presentation or dismissal.
- */
-struct PendingRoute<RouteType: AppRouteProtocol>: Equatable {
-    var operation: RouteOperation<RouteType>
-    var animated: Bool
-}
-
-/**
- Enum type describing an attempt to fulfill the route presentation request.
- **/
-enum PendingPresentationResult {
-    /**
-     Successfully presented the route.
-     */
-    case success
-
-    /**
-     The request to present this route should be dropped.
-     */
-    case drop
-
-    /**
-     The request to present this route cannot be fulfilled because the modal context does not allow
-     for that.
-
-     For example, on iPad, primary context cannot be presented above settings, because it enables
-     access to settings by making the settings cog accessible via custom presentation controller.
-     In such case the router will attempt to fulfill other requests in hope that perhaps settings
-     can be dismissed first before getting back to that request.
-     */
-    case blockedByModalContext
-}
-
-/**
- Enum type describing an attempt to fulfill the route dismissal request.
- */
-enum PendingDismissalResult {
-    /**
-     Successfully dismissed the route.
-     */
-    case success
-
-    /**
-     The request to present this route should be dropped.
-     */
-    case drop
-
-    /**
-     The route cannot be dismissed immediately because it's blocked by another modal presented
-     above.
-
-     The router will attempt to fulfill other requests first in hope to unblock the route by
-     dismissing the modal above before getting back to that request.
-     */
-    case blockedByModalAbove
-}
-
-/**
- Enum describing operation over the route.
- */
-enum RouteOperation<RouteType: AppRouteProtocol>: Equatable {
-    /**
-     Present route.
-     */
-    case present(RouteType)
-
-    /**
-     Dismiss route.
-     */
-    case dismiss(DismissMatch<RouteType>)
-
-    /**
-     Returns a group of affected routes.
-     */
-    var routeGroup: RouteType.RouteGroupType {
-        switch self {
-        case let .present(route):
-            return route.routeGroup
-        case let .dismiss(dismissMatch):
-            return dismissMatch.routeGroup
-        }
-    }
-}
-
-/**
- Enum type describing a single route or a group of routes requested to be dismissed.
- */
-enum DismissMatch<RouteType: AppRouteProtocol>: Equatable {
-    case group(RouteType.RouteGroupType)
-    case singleRoute(RouteType)
-
-    /**
-     Returns a group of affected routes.
-     */
-    var routeGroup: RouteType.RouteGroupType {
-        switch self {
-        case let .group(group):
-            return group
-        case let .singleRoute(route):
-            return route.routeGroup
-        }
-    }
-}
-
-/**
- Struct describing presented route.
- */
-struct PresentedRoute<RouteType: AppRouteProtocol>: Equatable {
-    var route: RouteType
-    var coordinator: Coordinator
-}
-
-/**
- Struct holding information used by delegate to perform dismissal of the route(s) in subject.
- */
-struct RouteDismissalContext<RouteType: AppRouteProtocol> {
-    /**
-     Specific routes that are being dismissed.
-     */
-    var dismissedRoutes: [PresentedRoute<RouteType>]
-
-    /**
-     Whether the entire group is being dismissed.
-     */
-    var isClosing: Bool
-
-    /**
-     Whether transition is animated.
-     */
-    var isAnimated: Bool
-}
-
-/**
- Struct holding information used by delegate to perform sub-navigation of the route in subject.
- */
-struct RouteSubnavigationContext<RouteType: AppRouteProtocol> {
-    var presentedRoute: PresentedRoute<RouteType>
-    var route: RouteType
-    var isAnimated: Bool
-}
-
-/**
- Application router delegate
- */
-protocol ApplicationRouterDelegate<RouteType>: AnyObject {
-    associatedtype RouteType: AppRouteProtocol
-
-    /**
-     Delegate should present the route and pass corresponding `Coordinator` upon completion.
-     */
-    func applicationRouter(
-        _ router: ApplicationRouter<RouteType>,
-        route: RouteType,
-        animated: Bool,
-        completion: @escaping (Coordinator) -> Void
-    )
-
-    /**
-     Delegate should dismiss the route.
-     */
-    func applicationRouter(
-        _ router: ApplicationRouter<RouteType>,
-        dismissWithContext context: RouteDismissalContext<RouteType>,
-        completion: @escaping () -> Void
-    )
-
-    /**
-     Delegate may reconsider if route presentation is still needed.
-
-     Return `true` to proceed with presenation, otherwise `false` to prevent it.
-     */
-    func applicationRouter(_ router: ApplicationRouter<RouteType>, shouldPresent route: RouteType) -> Bool
-
-    /**
-     Delegate may reconsider if route dismissal should be done.
-
-     Return `true` to proceed with dismissal, otherwise `false` to prevent it.
-     */
-    func applicationRouter(
-        _ router: ApplicationRouter<RouteType>,
-        shouldDismissWithContext context: RouteDismissalContext<RouteType>
-    ) -> Bool
-
-    /**
-     Delegate should handle sub-navigation for routes supporting it then call completion to tell
-     router when it's done.
-     */
-    func applicationRouter(
-        _ router: ApplicationRouter<RouteType>,
-        handleSubNavigationWithContext context: RouteSubnavigationContext<RouteType>,
-        completion: @escaping () -> Void
-    )
-}
-
-/**
  Main application router.
  */
 final class ApplicationRouter<RouteType: AppRouteProtocol> {
diff --git a/ios/MullvadVPN/Routing/ApplicationRouterDelegate.swift b/ios/MullvadVPN/Routing/ApplicationRouterDelegate.swift
new file mode 100644
index 0000000000..1daa35760e
--- /dev/null
+++ b/ios/MullvadVPN/Routing/ApplicationRouterDelegate.swift
@@ -0,0 +1,62 @@
+//
+//  ApplicationRouterDelegate.swift
+//  MullvadVPN
+//
+//  Created by pronebird on 17/08/2023.
+//  Copyright © 2023 Mullvad VPN AB. All rights reserved.
+//
+
+import Foundation
+
+/**
+ Application router delegate
+ */
+protocol ApplicationRouterDelegate<RouteType>: AnyObject {
+    associatedtype RouteType: AppRouteProtocol
+
+    /**
+     Delegate should present the route and pass corresponding `Coordinator` upon completion.
+     */
+    func applicationRouter(
+        _ router: ApplicationRouter<RouteType>,
+        route: RouteType,
+        animated: Bool,
+        completion: @escaping (Coordinator) -> Void
+    )
+
+    /**
+     Delegate should dismiss the route.
+     */
+    func applicationRouter(
+        _ router: ApplicationRouter<RouteType>,
+        dismissWithContext context: RouteDismissalContext<RouteType>,
+        completion: @escaping () -> Void
+    )
+
+    /**
+     Delegate may reconsider if route presentation is still needed.
+
+     Return `true` to proceed with presenation, otherwise `false` to prevent it.
+     */
+    func applicationRouter(_ router: ApplicationRouter<RouteType>, shouldPresent route: RouteType) -> Bool
+
+    /**
+     Delegate may reconsider if route dismissal should be done.
+
+     Return `true` to proceed with dismissal, otherwise `false` to prevent it.
+     */
+    func applicationRouter(
+        _ router: ApplicationRouter<RouteType>,
+        shouldDismissWithContext context: RouteDismissalContext<RouteType>
+    ) -> Bool
+
+    /**
+     Delegate should handle sub-navigation for routes supporting it then call completion to tell
+     router when it's done.
+     */
+    func applicationRouter(
+        _ router: ApplicationRouter<RouteType>,
+        handleSubNavigationWithContext context: RouteSubnavigationContext<RouteType>,
+        completion: @escaping () -> Void
+    )
+}
diff --git a/ios/MullvadVPN/Routing/ApplicationRouterTypes.swift b/ios/MullvadVPN/Routing/ApplicationRouterTypes.swift
new file mode 100644
index 0000000000..5316e85fdd
--- /dev/null
+++ b/ios/MullvadVPN/Routing/ApplicationRouterTypes.swift
@@ -0,0 +1,151 @@
+//
+//  ApplicationRouterTypes.swift
+//  MullvadVPN
+//
+//  Created by pronebird on 17/08/2023.
+//  Copyright © 2023 Mullvad VPN AB. All rights reserved.
+//
+
+import Foundation
+
+/**
+ Struct describing a routing request for presentation or dismissal.
+ */
+struct PendingRoute<RouteType: AppRouteProtocol>: Equatable {
+    var operation: RouteOperation<RouteType>
+    var animated: Bool
+}
+
+/**
+ Enum type describing an attempt to fulfill the route presentation request.
+ **/
+enum PendingPresentationResult {
+    /**
+     Successfully presented the route.
+     */
+    case success
+
+    /**
+     The request to present this route should be dropped.
+     */
+    case drop
+
+    /**
+     The request to present this route cannot be fulfilled because the modal context does not allow
+     for that.
+
+     For example, on iPad, primary context cannot be presented above settings, because it enables
+     access to settings by making the settings cog accessible via custom presentation controller.
+     In such case the router will attempt to fulfill other requests in hope that perhaps settings
+     can be dismissed first before getting back to that request.
+     */
+    case blockedByModalContext
+}
+
+/**
+ Enum type describing an attempt to fulfill the route dismissal request.
+ */
+enum PendingDismissalResult {
+    /**
+     Successfully dismissed the route.
+     */
+    case success
+
+    /**
+     The request to present this route should be dropped.
+     */
+    case drop
+
+    /**
+     The route cannot be dismissed immediately because it's blocked by another modal presented
+     above.
+
+     The router will attempt to fulfill other requests first in hope to unblock the route by
+     dismissing the modal above before getting back to that request.
+     */
+    case blockedByModalAbove
+}
+
+/**
+ Enum describing operation over the route.
+ */
+enum RouteOperation<RouteType: AppRouteProtocol>: Equatable {
+    /**
+     Present route.
+     */
+    case present(RouteType)
+
+    /**
+     Dismiss route.
+     */
+    case dismiss(DismissMatch<RouteType>)
+
+    /**
+     Returns a group of affected routes.
+     */
+    var routeGroup: RouteType.RouteGroupType {
+        switch self {
+        case let .present(route):
+            return route.routeGroup
+        case let .dismiss(dismissMatch):
+            return dismissMatch.routeGroup
+        }
+    }
+}
+
+/**
+ Enum type describing a single route or a group of routes requested to be dismissed.
+ */
+enum DismissMatch<RouteType: AppRouteProtocol>: Equatable {
+    case group(RouteType.RouteGroupType)
+    case singleRoute(RouteType)
+
+    /**
+     Returns a group of affected routes.
+     */
+    var routeGroup: RouteType.RouteGroupType {
+        switch self {
+        case let .group(group):
+            return group
+        case let .singleRoute(route):
+            return route.routeGroup
+        }
+    }
+}
+
+/**
+ Struct describing presented route.
+ */
+struct PresentedRoute<RouteType: AppRouteProtocol>: Equatable {
+    var route: RouteType
+    var coordinator: Coordinator
+}
+
+/**
+ Struct holding information used by delegate to perform dismissal of the route(s) in subject.
+ */
+struct RouteDismissalContext<RouteType: AppRouteProtocol> {
+    /**
+     Specific routes that are being dismissed.
+     */
+    var dismissedRoutes: [PresentedRoute<RouteType>]
+
+    /**
+     Whether the entire group is being dismissed.
+     */
+    var isClosing: Bool
+
+    /**
+     Whether transition is animated.
+     */
+    var isAnimated: Bool
+}
+
+/**
+ Struct holding information used by delegate to perform sub-navigation of the route in subject.
+ */
+struct RouteSubnavigationContext<RouteType: AppRouteProtocol> {
+    var presentedRoute: PresentedRoute<RouteType>
+    var route: RouteType
+    var isAnimated: Bool
+}