Add device access token authentication

apps/apple/VelodyiPhone/Sources/iPhoneLibraryViewModel.swift

@@ -469,7 +469,12 @@ final class iPhoneLibraryViewModel {
             baseURL: ServerEnvironment.defaultLocalBaseURL,
             appVersion: "0.1.0"
         )
-        let apiClient = URLSessionVelodyAPIClient(environment: environment)
+        let apiClient = URLSessionVelodyAPIClient(
+            environment: environment,
+            deviceAccessTokenProvider: {
+                try await keychainService.loadValue(forKey: Self.deviceAccessTokenKey)
+            }
+        )
         let store = Self.makeRemoteLibraryStore()
         let downloadStateStore = Self.makeRemoteTrackDownloadStateStore()
         let audioFileStore = Self.makeOfflineAudioFileStore()
@@ -657,7 +662,10 @@ final class iPhoneLibraryViewModel {
     private func currentOrRegisterDeviceID() async throws -> String {
         if let existingDeviceID = try await keychainService.loadValue(
             forKey: Self.deviceIDKey
-        ), !existingDeviceID.isEmpty {
+        ), !existingDeviceID.isEmpty,
+           let existingDeviceAccessToken = try await keychainService.loadValue(
+            forKey: Self.deviceAccessTokenKey
+           ), !existingDeviceAccessToken.isEmpty {
             return existingDeviceID
         }
 
@@ -670,6 +678,10 @@ final class iPhoneLibraryViewModel {
         )
 
         try await keychainService.save(response.deviceId, forKey: Self.deviceIDKey)
+        try await keychainService.save(
+            response.deviceAccessToken,
+            forKey: Self.deviceAccessTokenKey
+        )
         try await keychainService.save(
             response.bootstrapToken,
             forKey: Self.bootstrapTokenKey
@@ -914,6 +926,7 @@ final class iPhoneLibraryViewModel {
     #endif
 
     private static let deviceIDKey = "velody.iphone.device-id"
+    private static let deviceAccessTokenKey = "velody.iphone.device-access-token"
     private static let bootstrapTokenKey = "velody.iphone.bootstrap-token"
     private static let remoteLibraryEmptyMessage = LibrarySectionMessage(
         title: "No music synced yet",