Implement GetPeers AppIntent

Signed-off-by: Alessio Nossa <alessio.nossa@gmail.com>

Sources/WireGuardApp/UI/iOS/AppDelegate.swift

@@ -4,6 +4,7 @@
 import UIKit
 import os.log
 import Intents
+import AppIntents
 
 @UIApplicationMain
 class AppDelegate: UIResponder, UIApplicationDelegate {
@@ -47,6 +48,10 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
                 tunnelsManager.activationDelegate = self.mainVC
 
+                if #available(iOS 16.0, *) {
+                    AppDependencyManager.shared.add(dependency: tunnelsManager)
+                }
+
                 NotificationCenter.default.post(name: AppDelegate.tunnelsManagerReadyNotificationName,
                                                 object: self,
                                                 userInfo: nil)

Sources/WireguardAppIntents/AppIntents.strings

@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: MIT
+// Copyright © 2018-2021 WireGuard LLC. All Rights Reserved.
+
+// App Intents Common
+"wireguardAppIntentsWrongTunnelError %@" = "Cannot find a tunnel with the name \"%1$@\"";
+"wireguardAppIntentsMissingConfigurationError" = "The selected tunnel has no configuration.";
+
+// Get peers Intent
+"getPeersIntentName" = "Get Peers";
+"getPeersIntentDescription" = "Get list of public keys of peers in the selected configuration";
+"getPeersIntentTunnelParameterTitle" = "Tunnel";
+"getPeersIntentSummary ${tunnelName}" = "Get peers of ${tunnelName}";

Sources/WireguardAppIntents/GetPeers.swift

@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: MIT
+// Copyright © 2018-2021 WireGuard LLC. All Rights Reserved.
+
+import Foundation
+import AppIntents
+
+@available(iOS 16.0, macOS 13.0, watchOS 9.0, tvOS 16.0, *)
+struct GetPeers: AppIntent {
+
+    static var title = LocalizedStringResource("getPeersIntentName", table: "AppIntents")
+    static var description = IntentDescription(
+        LocalizedStringResource("getPeersIntentDescription", table: "AppIntents")
+    )
+
+    @Parameter(
+        title: LocalizedStringResource("getPeersIntentTunnelParameterTitle", table: "AppIntents"),
+        optionsProvider: TunnelsOptionsProvider()
+    )
+    var tunnelName: String
+
+    @Dependency
+    var tunnelsManager: TunnelsManager
+
+    func perform() async throws -> some ReturnsValue {
+        guard let tunnelContainer = tunnelsManager.tunnel(named: tunnelName) else {
+            throw GetPeersIntentError.wrongTunnel(name: tunnelName)
+        }
+
+        guard let tunnelConfiguration = tunnelContainer.tunnelConfiguration else {
+            throw GetPeersIntentError.missingConfiguration
+        }
+
+        let publicKeys = tunnelConfiguration.peers.map { $0.publicKey.base64Key }
+        return .result(value: publicKeys)
+    }
+
+    static var parameterSummary: some ParameterSummary {
+        Summary("getPeersIntentSummary \(\.$tunnelName)", table: "AppIntents")
+    }
+}
+
+@available(iOS 16.0, macOS 13.0, watchOS 9.0, tvOS 16.0, *)
+enum GetPeersIntentError: Swift.Error, CustomLocalizedStringResourceConvertible {
+    case wrongTunnel(name: String)
+    case missingConfiguration
+
+    var localizedStringResource: LocalizedStringResource {
+        switch self {
+        case .wrongTunnel(let name):
+            return LocalizedStringResource("wireguardAppIntentsWrongTunnelError \(name)", table: "AppIntents")
+        case .missingConfiguration:
+            return LocalizedStringResource("wireguardAppIntentsMissingConfigurationError", table: "AppIntents")
+        }
+    }
+}

Sources/WireguardAppIntents/TunnelsOptionsProvider.swift

@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: MIT
+// Copyright © 2018-2021 WireGuard LLC. All Rights Reserved.
+
+import AppIntents
+
+@available(iOS 16.0, macOS 13.0, watchOS 9.0, tvOS 16.0, *)
+struct TunnelsOptionsProvider: DynamicOptionsProvider {
+    @Dependency
+    var tunnelsManager: TunnelsManager
+
+    func results() async throws -> [String] {
+        let tunnelsNames = tunnelsManager.mapTunnels { $0.name }
+        return tunnelsNames
+    }
+}