Switch to InitializationStatus publishing for Android parity (#597)

* Add InitializationStatus publishing like we do on Android

* Lint

Author: jhaven-stytch

Sources/StytchCore/StartupClient.swift

@@ -1,7 +1,12 @@
 import Combine
 import Foundation
 
-struct StartupClient {
+public enum InitializationStatus: Sendable {
+    case success
+    case failure(errors: [Error])
+}
+
+enum StartupClient {
     enum BootstrapRoute: BaseRouteType {
         case fetch(Path)
 
@@ -19,11 +24,13 @@ struct StartupClient {
 
     static var expectedClientType: ClientType?
 
-    static var isInitialized: AnyPublisher<Bool, Never> {
+    static var isInitialized: AnyPublisher<InitializationStatus, Never> {
         isInitializedPublisher.eraseToAnyPublisher()
     }
 
-    private static let isInitializedPublisher = PassthroughSubject<Bool, Never>()
+    private static let isInitializedPublisher = PassthroughSubject<InitializationStatus, Never>()
+    private static var bootstrapError: Error?
+    private static var sessionHydrationError: Error?
 
     static func start() async throws {
         if let expectedClientType {
@@ -40,9 +47,18 @@ struct StartupClient {
         async let bootstrap: () = fetchAndApplyBootstrap()
 
         // Await both tasks to complete
-        _ = try await (auth, bootstrap)
-
-        isInitializedPublisher.send(true)
+        do {
+            _ = try await (auth, bootstrap)
+            // We allow the calls to silently fail because they have safe fallbacks, but we want to let the developer know if something went wrong
+            let potentialErrors = [bootstrapError, sessionHydrationError].compactMap { $0 }
+            if !potentialErrors.isEmpty {
+                isInitializedPublisher.send(.failure(errors: potentialErrors))
+            } else {
+                isInitializedPublisher.send(.success)
+            }
+        } catch {
+            isInitializedPublisher.send(.failure(errors: [error]))
+        }
 
         StytchConsoleLogger.log(message: "Stytch SDK initialized for client type: \(clientType)")
     }
@@ -53,9 +69,19 @@ struct StartupClient {
         }
         switch clientType {
         case .consumer:
-            _ = try? await StytchClient.sessions.authenticate(parameters: .init(sessionDurationMinutes: nil))
+            do {
+                _ = try await StytchClient.sessions.authenticate(parameters: .init(sessionDurationMinutes: nil))
+                sessionHydrationError = nil
+            } catch {
+                sessionHydrationError = error
+            }
         case .b2b:
-            _ = try? await StytchB2BClient.sessions.authenticate(parameters: .init(sessionDurationMinutes: nil))
+            do {
+                _ = try await StytchB2BClient.sessions.authenticate(parameters: .init(sessionDurationMinutes: nil))
+                sessionHydrationError = nil
+            } catch {
+                sessionHydrationError = error
+            }
         }
     }
 
@@ -83,26 +109,26 @@ struct StartupClient {
     }
 
     @discardableResult static func bootstrap() async throws -> BootstrapResponseData {
-        guard let publicToken = StytchClient.stytchClientConfiguration?.publicToken else {
-            throw StytchSDKError.consumerSDKNotConfigured
-        }
-
         // Attempt to fetch the latest bootstrap data from the API using the provided public token.
         // If the network request succeeds, extract and use the wrapped response data.
         // If the network request fails, fall back to the locally stored bootstrap data.
         // If no local data exists, use a predefined default bootstrap data.
-        let bootstrapResponseData: BootstrapResponseData
-        if let bootstrapData = try? await router.get(route: .fetch(Path(rawValue: publicToken))) as BootstrapResponse {
-            bootstrapResponseData = bootstrapData.wrapped
-        } else if let currentBootstrapData = Current.localStorage.bootstrapData {
-            bootstrapResponseData = currentBootstrapData
-        } else {
-            bootstrapResponseData = BootstrapResponseData.defaultBootstrapData
+        do {
+            guard let publicToken = StytchClient.stytchClientConfiguration?.publicToken else {
+                throw StytchSDKError.consumerSDKNotConfigured
+            }
+            let updatedBootstrapData = try await router.get(route: .fetch(Path(rawValue: publicToken))) as BootstrapResponse
+            bootstrapError = nil
+            Current.localStorage.bootstrapData = updatedBootstrapData.wrapped
+            return updatedBootstrapData.wrapped
+        } catch {
+            bootstrapError = error
+            if let currentBootstrapData = Current.localStorage.bootstrapData {
+                return currentBootstrapData
+            } else {
+                Current.localStorage.bootstrapData = BootstrapResponseData.defaultBootstrapData
+                return BootstrapResponseData.defaultBootstrapData
+            }
         }
-
-        // Update the local storage with the resolved bootstrap data before returning it.
-        Current.localStorage.bootstrapData = bootstrapResponseData
-
-        return bootstrapResponseData
     }
 }

Sources/StytchCore/StytchClientCommon.swift

@@ -27,7 +27,7 @@ protocol StytchClientCommonInternal: StytchClientCommonPublic {
     static var shared: Self { get }
     static var clientType: ClientType { get }
 
-    static var isInitialized: AnyPublisher<Bool, Never> { get }
+    static var isInitialized: AnyPublisher<InitializationStatus, Never> { get }
 
     static func handle(url: URL, sessionDurationMinutes: Minutes) async throws -> DeeplinkHandledStatus<DeeplinkResponse, DeeplinkTokenType, DeeplinkRedirectType>
 }
@@ -135,7 +135,7 @@ public extension StytchClientCommonPublic {
      1. Attempting to call sessions.authenticate (if there's a session token cached on the device).
      2. Bootstrapping configuration, including DFP and captcha setup.
      */
-    static var isInitialized: AnyPublisher<Bool, Never> {
+    static var isInitialized: AnyPublisher<InitializationStatus, Never> {
         StartupClient.isInitialized
     }