Switch to gRPC client in Swift app

Apple/UI/Tunnel.swift

@@ -0,0 +1,61 @@
+import BurrowConfiguration
+import NetworkExtension
+import SwiftUI
+
+protocol Tunnel: Sendable {
+    @MainActor var status: TunnelStatus { get }
+
+    func start()
+    func stop()
+    func enable()
+}
+
+public enum TunnelStatus: Sendable, Equatable, Hashable {
+    case unknown
+    case permissionRequired
+    case disabled
+    case connecting
+    case connected(Date)
+    case disconnecting
+    case disconnected
+    case reasserting
+    case invalid
+    case configurationReadWriteFailed
+}
+
+struct TunnelKey: EnvironmentKey {
+    static var defaultValue: any Tunnel {
+        NetworkExtensionTunnel(bundleIdentifier: Constants.networkExtensionBundleIdentifier)
+    }
+}
+
+extension EnvironmentValues {
+    var tunnel: any Tunnel {
+        get { self[TunnelKey.self] }
+        set { self[TunnelKey.self] = newValue }
+    }
+}
+
+#if DEBUG
+@Observable
+@MainActor
+final class PreviewTunnel: Tunnel {
+    private(set) var status: TunnelStatus = .permissionRequired
+
+    nonisolated func start() {
+        set(.connected(.now))
+    }
+
+    nonisolated func stop() {
+        set(.disconnected)
+    }
+
+    nonisolated func enable() {
+        set(.disconnected)
+    }
+
+    nonisolated private func set(_ status: TunnelStatus) {
+        Task { @MainActor in self.status = status }
+    }
+}
+#endif