fix: Compiler warnings about Swift 6 compatibility and Sendable conformance.

Signed-off-by: Iva Horn <iva.horn@nextcloud.com>

Author: i2h3

Sources/NextcloudFileProviderKit/Interface/ChangeNotificationInterface.swift

@@ -3,6 +3,6 @@
 
 import Foundation
 
-public protocol ChangeNotificationInterface {
+public protocol ChangeNotificationInterface: Sendable {
     func notifyChange()
 }

Sources/NextcloudFileProviderKit/Interface/FileProviderChangeNotificationInterface.swift

@@ -1,10 +1,10 @@
 //  SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
 //  SPDX-License-Identifier: GPL-2.0-or-later
 
-import FileProvider
+@preconcurrency import FileProvider
 import Foundation
 
-public class FileProviderChangeNotificationInterface: ChangeNotificationInterface {
+public final class FileProviderChangeNotificationInterface: ChangeNotificationInterface {
     let domain: NSFileProviderDomain
     let logger: FileProviderLogger
 

Sources/NextcloudFileProviderKit/Interface/RemoteInterface.swift

@@ -23,7 +23,7 @@ public enum AuthenticationAttemptResultState: Int {
 /// Usually, the shared `NextcloudKit` instance is conforming to this and provided as an argument.
 /// NextcloudKit is not mockable as of writing, hence this protocol was defined to enable testing.
 ///
-public protocol RemoteInterface {
+public protocol RemoteInterface: Sendable {
     func setDelegate(_ delegate: NextcloudKitDelegate)
 
     func createFolder(

Sources/NextcloudFileProviderKitMocks/TestableRemoteInterface.swift

@@ -7,7 +7,7 @@ import NextcloudCapabilitiesKit
 @testable import NextcloudFileProviderKit
 import NextcloudKit
 
-public struct TestableRemoteInterface: RemoteInterface {
+public struct TestableRemoteInterface: RemoteInterface, @unchecked Sendable {
     public init() {}
 
     public func setDelegate(_: any NextcloudKitDelegate) {}

Tests/Interface/MockChangeNotificationInterface.swift

@@ -4,7 +4,7 @@
 import Foundation
 import NextcloudFileProviderKit
 
-public class MockChangeNotificationInterface: ChangeNotificationInterface {
+public class MockChangeNotificationInterface: ChangeNotificationInterface, @unchecked Sendable {
     public var changeHandler: (() -> Void)?
     public init(changeHandler: (() -> Void)? = nil) {
         self.changeHandler = changeHandler

Tests/Interface/MockNotifyPushServer.swift

@@ -7,7 +7,7 @@ import NIOPosix
 import NIOWebSocket
 
 @available(macOS 14, iOS 17, tvOS 17, watchOS 10, *)
-public class MockNotifyPushServer {
+public class MockNotifyPushServer: @unchecked Sendable {
     /// The server's host.
     private let host: String
     /// The server's port.

Tests/Interface/MockRemoteInterface.swift

@@ -554,7 +554,7 @@ let mockCapabilities = ##"""
 }
 """##
 
-public class MockRemoteInterface: RemoteInterface {
+public class MockRemoteInterface: RemoteInterface, @unchecked Sendable {
     ///
     /// `RemoteInterface` makes it necessary to bypass its API to fully register a mocked account object.
     ///