Swift 6 Upgrade (#19)

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version: 5.10
+// swift-tools-version: 6.0
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription

README.md

@@ -1,6 +1,6 @@
 ![Build](https://github.com/codefiesta/OAuthKit/actions/workflows/swift.yml/badge.svg)
 ![Xcode 16.0+](https://img.shields.io/badge/Xcode-16.0%2B-gold.svg)
-![Swift 5.10+](https://img.shields.io/badge/Swift-5.10%2B-tomato.svg)
+![Swift 6.0+](https://img.shields.io/badge/Swift-6.0%2B-tomato.svg)
 ![iOS 17.0+](https://img.shields.io/badge/iOS-17.0%2B-crimson.svg)
 ![macOS 15.0+](https://img.shields.io/badge/macOS-15.0%2B-skyblue.svg)
 ![visionOS 1.0+](https://img.shields.io/badge/visionOS-1.0%2B-magenta.svg)

Sources/OAuthKit/Extensions/EnvironmentValues+Extensions.swift

@@ -19,5 +19,5 @@ public extension EnvironmentValues {
 struct OAuthKey: EnvironmentKey {
 
     /// The default OAuth instance that is loaded into the environment.
-    static var defaultValue: OAuth = .init(.main)
+    static let defaultValue: OAuth = .init(.main)
 }

Sources/OAuthKit/Keychain/Keychain.swift

@@ -14,7 +14,7 @@ private let defaultApplicationTag = "oauthkit"
 private let tokenIdentifier = "oauth-token"
 
 /// A helper class used to interact with  Keychain access.
-class Keychain {
+class Keychain: @unchecked Sendable {
 
     static let `default`: Keychain = Keychain()
     private let lock = NSLock()

Sources/OAuthKit/Network/NetworkMonitor.swift

@@ -11,7 +11,7 @@ import Network
 private let queueLabel = "oauthkit.NetworkMonitor"
 
 /// A type that broadcasts network reachability via Combine event publishing.
-final class NetworkMonitor {
+final class NetworkMonitor: @unchecked Sendable {
 
     /// The private pass through publisher.
     private var publisher = PassthroughSubject<Bool, Never>()

Sources/OAuthKit/OAuth.swift

@@ -24,7 +24,7 @@ public enum OAError: Error {
 
 /// Provides an observable OAuth 2.0 implementation.
 /// See: https://datatracker.ietf.org/doc/html/rfc6749
-public class OAuth: NSObject, ObservableObject {
+public class OAuth: NSObject, ObservableObject, @unchecked Sendable {
 
     /// Keys and values used to specify loading or runtime options.
     public struct Option: Hashable, Equatable, RawRepresentable, @unchecked Sendable {
@@ -111,7 +111,7 @@ public class OAuth: NSObject, ObservableObject {
     /// A codable type that holds oauth token information.
     /// See: https://www.oauth.com/oauth2-servers/access-tokens/access-token-response/
     /// See: https://datatracker.ietf.org/doc/html/rfc6749#section-5.1
-    public struct Token: Codable, Equatable {
+    public struct Token: Codable, Equatable, @unchecked Sendable {
 
         let accessToken: String
         let refreshToken: String?
@@ -163,7 +163,7 @@ public class OAuth: NSObject, ObservableObject {
     }
 
     /// Holds the OAuth state that is published to subscribers via the `state` property publisher.
-    public enum State: Equatable {
+    public enum State: Equatable, @unchecked Sendable {
 
         /// The state is empty and no authorizations or tokens have been issued.
         case empty

Sources/OAuthKit/Views/OAWebView.swift

@@ -11,6 +11,7 @@ import WebKit
 
 /// A UIViewRepresentable / NSViewRepresentable wrapper type that coordinates
 /// oauth authorization flows inside a WKWebView.
+@MainActor
 public struct OAWebView {
 
     @EnvironmentObject

Sources/OAuthKit/Views/OAWebViewCoordinator.swift

@@ -10,7 +10,8 @@ import Combine
 import SwiftUI
 import WebKit
 
-public class OAWebViewCoordinator: NSObject, WKNavigationDelegate {
+@MainActor
+public class OAWebViewCoordinator: NSObject {
 
     var webView: OAWebView
 
@@ -26,20 +27,6 @@ public class OAWebViewCoordinator: NSObject, WKNavigationDelegate {
         super.init()
     }
 
-    public func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
-        guard let url = navigationAction.request.url else {
-            decisionHandler(.cancel)
-            return
-        }
-        switch oauth.state {
-        case .empty, .requestingAccessToken, .authorized:
-            break
-        case .authorizing(let provider):
-            handle(url: url, provider: provider)
-        }
-        decisionHandler(.allow)
-    }
-
     /// Handles the authorization url for the specified provider.
     /// - Parameters:
     ///   - url: the url to handle
@@ -74,4 +61,21 @@ public class OAWebViewCoordinator: NSObject, WKNavigationDelegate {
         }
     }
 }
+
+extension OAWebViewCoordinator: WKNavigationDelegate {
+
+    public func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction) async -> WKNavigationActionPolicy {
+        guard let url = navigationAction.request.url else {
+            return .cancel
+        }
+        switch oauth.state {
+        case .empty, .requestingAccessToken, .authorized:
+            break
+        case .authorizing(let provider):
+            handle(url: url, provider: provider)
+        }
+        return .allow
+    }
+}
+
 #endif