fix(apple-ai): wrap FoundationModels code in canImport check to fix CI build

firebaseai/FirebaseAIExample/ContentView.swift

@@ -130,17 +130,25 @@ struct ContentView: View {
     case "LiveScreen":
       LiveScreen(backendType: selectedBackend, sample: sample)
     case "FoundationModelsHybrid":
-      if #available(iOS 27.0, *) {
-        HybridAIScreen(backendType: selectedBackend)
-      } else {
-        Text("Foundation Models are only available on iOS 27 or newer.")
-      }
+      #if canImport(FoundationModels)
+        if #available(iOS 27.0, *) {
+          HybridAIScreen(backendType: selectedBackend)
+        } else {
+          Text("Foundation Models are only available on iOS 27 or newer.")
+        }
+      #else
+        Text("Foundation Models are not supported on this platform/SDK.")
+      #endif
     case "FoundationModelsVisionID":
-      if #available(iOS 27.0, *) {
-        VisionIDScreen(backendType: selectedBackend)
-      } else {
-        Text("Foundation Models are only available on iOS 27 or newer.")
-      }
+      #if canImport(FoundationModels)
+        if #available(iOS 27.0, *) {
+          VisionIDScreen(backendType: selectedBackend)
+        } else {
+          Text("Foundation Models are only available on iOS 27 or newer.")
+        }
+      #else
+        Text("Foundation Models are not supported on this platform/SDK.")
+      #endif
     default:
       EmptyView()
     }

firebaseai/FirebaseAIExample/Features/AppleFoundationModels/Models/Models.swift

@@ -12,27 +12,29 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import Foundation
-import FoundationModels
+#if canImport(FoundationModels)
+  import Foundation
+  import FoundationModels
 
-@available(iOS 26.0, *)
-@Generable
-struct IdentifiedObject: Equatable, Codable {
-  @Guide(description: "The name of the primary object or landmark detected.")
-  let name: String
+  @available(iOS 26.0, *)
+  @Generable
+  struct IdentifiedObject: Equatable, Codable {
+    @Guide(description: "The name of the primary object or landmark detected.")
+    let name: String
 
-  @Guide(
-    description: "The category of the object (e.g. Landmark, Plant, Food, Animal, Device, Clothing)."
-  )
-  let category: String
+    @Guide(
+      description: "The category of the object (e.g. Landmark, Plant, Food, Animal, Device, Clothing)."
+    )
+    let category: String
 
-  @Guide(description: "A short, 2-sentence description of the object and interesting facts.")
-  let description: String
-}
+    @Guide(description: "A short, 2-sentence description of the object and interesting facts.")
+    let description: String
+  }
 
-@available(iOS 26.0, *)
-@Generable
-struct TextSummary: Equatable, Codable {
-  @Guide(description: "A list of exactly 2 key summary points.")
-  let summaryPoints: [String]
-}
+  @available(iOS 26.0, *)
+  @Generable
+  struct TextSummary: Equatable, Codable {
+    @Guide(description: "A list of exactly 2 key summary points.")
+    let summaryPoints: [String]
+  }
+#endif

firebaseai/FirebaseAIExample/Features/AppleFoundationModels/Screens/HybridAIScreen.swift

@@ -12,19 +12,21 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import SwiftUI
+#if canImport(FoundationModels)
+  import SwiftUI
 
-@available(iOS 27.0, *)
-struct HybridAIScreen: View {
-  @StateObject private var viewModel: HybridAIViewModel
+  @available(iOS 27.0, *)
+  struct HybridAIScreen: View {
+    @StateObject private var viewModel: HybridAIViewModel
 
-  init(backendType: BackendOption) {
-    _viewModel = StateObject(wrappedValue: HybridAIViewModel(backendType: backendType))
-  }
+    init(backendType: BackendOption) {
+      _viewModel = StateObject(wrappedValue: HybridAIViewModel(backendType: backendType))
+    }
 
-  var body: some View {
-    FoundationModelsContainer(viewModel: viewModel, title: "Hybrid AI") { vm in
-      HybridAIView(viewModel: vm)
+    var body: some View {
+      FoundationModelsContainer(viewModel: viewModel, title: "Hybrid AI") { vm in
+        HybridAIView(viewModel: vm)
+      }
     }
   }
-}
+#endif

firebaseai/FirebaseAIExample/Features/AppleFoundationModels/Screens/VisionIDScreen.swift

@@ -12,21 +12,23 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import SwiftUI
-import PhotosUI
+#if canImport(FoundationModels)
+  import SwiftUI
+  import PhotosUI
 
-@available(iOS 27.0, *)
-struct VisionIDScreen: View {
-  @StateObject private var viewModel: VisionIDViewModel
-  @State private var photosPickerItem: PhotosPickerItem? = nil
+  @available(iOS 27.0, *)
+  struct VisionIDScreen: View {
+    @StateObject private var viewModel: VisionIDViewModel
+    @State private var photosPickerItem: PhotosPickerItem? = nil
 
-  init(backendType: BackendOption) {
-    _viewModel = StateObject(wrappedValue: VisionIDViewModel(backendType: backendType))
-  }
+    init(backendType: BackendOption) {
+      _viewModel = StateObject(wrappedValue: VisionIDViewModel(backendType: backendType))
+    }
 
-  var body: some View {
-    FoundationModelsContainer(viewModel: viewModel, title: "Vision ID") { vm in
-      VisionIDView(viewModel: vm, photosPickerItem: $photosPickerItem)
+    var body: some View {
+      FoundationModelsContainer(viewModel: viewModel, title: "Vision ID") { vm in
+        VisionIDView(viewModel: vm, photosPickerItem: $photosPickerItem)
+      }
     }
   }
-}
+#endif

firebaseai/FirebaseAIExample/Features/AppleFoundationModels/ViewModels/FoundationModelsBaseViewModel.swift

@@ -12,47 +12,49 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import Foundation
-import SwiftUI
-import Combine
-import FoundationModels
-import FirebaseAILogic
-
-enum ModelPreference: String, CaseIterable, Identifiable {
-  case auto = "Auto (Local First)"
-  case cloud = "Cloud Only"
-
-  var id: String { rawValue }
-}
-
-@available(iOS 27.0, *)
-@MainActor
-class FoundationModelsBaseViewModel: ObservableObject {
-  @Published var inProgress = false
-  @Published var error: Error?
-  @Published var modelPreference: ModelPreference = .auto
-  @Published var isUsingLocalModel: Bool = false
-
-  internal var activeTask: Task<Void, Never>?
-  let backendType: BackendOption
-
-  init(backendType: BackendOption) {
-    self.backendType = backendType
+#if canImport(FoundationModels)
+  import Foundation
+  import SwiftUI
+  import Combine
+  import FoundationModels
+  import FirebaseAILogic
+
+  enum ModelPreference: String, CaseIterable, Identifiable {
+    case auto = "Auto (Local First)"
+    case cloud = "Cloud Only"
+
+    var id: String { rawValue }
   }
 
-  func stopActiveTask() {
-    activeTask?.cancel()
-    activeTask = nil
-    inProgress = false
-  }
+  @available(iOS 27.0, *)
+  @MainActor
+  class FoundationModelsBaseViewModel: ObservableObject {
+    @Published var inProgress = false
+    @Published var error: Error?
+    @Published var modelPreference: ModelPreference = .auto
+    @Published var isUsingLocalModel: Bool = false
+
+    internal var activeTask: Task<Void, Never>?
+    let backendType: BackendOption
+
+    init(backendType: BackendOption) {
+      self.backendType = backendType
+    }
+
+    func stopActiveTask() {
+      activeTask?.cancel()
+      activeTask = nil
+      inProgress = false
+    }
 
-  internal func getFirebaseAI() -> FirebaseAI {
-    switch backendType {
-    case .googleAI:
-      return FirebaseAI.firebaseAI(backend: .googleAI())
-    case .vertexAI:
-      // Using "global" as location for Foundation Models fallback compatibility
-      return FirebaseAI.firebaseAI(backend: .vertexAI(location: "global"))
+    internal func getFirebaseAI() -> FirebaseAI {
+      switch backendType {
+      case .googleAI:
+        return FirebaseAI.firebaseAI(backend: .googleAI())
+      case .vertexAI:
+        // Using "global" as location for Foundation Models fallback compatibility
+        return FirebaseAI.firebaseAI(backend: .vertexAI(location: "global"))
+      }
     }
   }
-}
+#endif

firebaseai/FirebaseAIExample/Features/AppleFoundationModels/ViewModels/HybridAIViewModel.swift

@@ -12,40 +12,70 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import Foundation
-import SwiftUI
-import Combine
-import FoundationModels
-import FirebaseAILogic
+#if canImport(FoundationModels)
+  import Foundation
+  import SwiftUI
+  import Combine
+  import FoundationModels
+  import FirebaseAILogic
 
-@available(iOS 27.0, *)
-@MainActor
-final class HybridAIViewModel: FoundationModelsBaseViewModel {
-  @Published var inputText: String =
-    "It is the quintessential autumn harvest fruit, famously baked into warm cinnamon pastries, dipped in sticky caramel on Halloween, and traditionally rumored to keep medical professionals at bay if eaten once a day."
-  @Published var outputSummary: TextSummary?
+  @available(iOS 27.0, *)
+  @MainActor
+  final class HybridAIViewModel: FoundationModelsBaseViewModel {
+    @Published var inputText: String =
+      "It is the quintessential autumn harvest fruit, famously baked into warm cinnamon pastries, dipped in sticky caramel on Halloween, and traditionally rumored to keep medical professionals at bay if eaten once a day."
+    @Published var outputSummary: TextSummary?
 
-  func runSummarization() {
-    stopActiveTask()
-    inProgress = true
-    error = nil
-    outputSummary = nil
+    func runSummarization() {
+      stopActiveTask()
+      inProgress = true
+      error = nil
+      outputSummary = nil
 
-    activeTask = Task {
-      defer { self.inProgress = false }
+      activeTask = Task {
+        defer { self.inProgress = false }
 
-      let instructions = Instructions {
-        "Your job is to summarize the provided text in exactly 2 bullet points."
-      }
+        let instructions = Instructions {
+          "Your job is to summarize the provided text in exactly 2 bullet points."
+        }
 
-      let availability = SystemLanguageModel.default.availability
+        let availability = SystemLanguageModel.default.availability
+
+        // Try local model first if it reports available and not forced to cloud
+        if modelPreference == .auto, availability == .available {
+          isUsingLocalModel = true
+          do {
+            let session = LanguageModelSession(
+              model: SystemLanguageModel.default,
+              instructions: instructions
+            )
+            let response = try await session.respond(
+              to: inputText,
+              generating: TextSummary.self
+            )
+            if !Task.isCancelled {
+              self.outputSummary = response.content
+            }
+            return
+          } catch {
+            // Fall back to cloud model if local model fails
+            if error.isMLAssetUnavailable {
+              print("Local ML assets unavailable. Falling back to cloud model...")
+            } else {
+              print(
+                "Local model failed: \(error.localizedDescription). Falling back to cloud model..."
+              )
+            }
+          }
+        }
 
-      // Try local model first if it reports available and not forced to cloud
-      if modelPreference == .auto, availability == .available {
-        isUsingLocalModel = true
+        // Fallback to cloud model
+        isUsingLocalModel = false
         do {
+          let ai = getFirebaseAI()
+          let model = ai.geminiLanguageModel(name: "gemini-3.1-flash-lite")
           let session = LanguageModelSession(
-            model: SystemLanguageModel.default,
+            model: model,
             instructions: instructions
           )
           let response = try await session.respond(
@@ -55,40 +85,12 @@ final class HybridAIViewModel: FoundationModelsBaseViewModel {
           if !Task.isCancelled {
             self.outputSummary = response.content
           }
-          return
         } catch {
-          // Fall back to cloud model if local model fails
-          if error.isMLAssetUnavailable {
-            print("Local ML assets unavailable. Falling back to cloud model...")
-          } else {
-            print(
-              "Local model failed: \(error.localizedDescription). Falling back to cloud model..."
-            )
+          if !Task.isCancelled {
+            self.error = error
           }
         }
       }
-
-      // Fallback to cloud model
-      isUsingLocalModel = false
-      do {
-        let ai = getFirebaseAI()
-        let model = ai.geminiLanguageModel(name: "gemini-3.1-flash-lite")
-        let session = LanguageModelSession(
-          model: model,
-          instructions: instructions
-        )
-        let response = try await session.respond(
-          to: inputText,
-          generating: TextSummary.self
-        )
-        if !Task.isCancelled {
-          self.outputSummary = response.content
-        }
-      } catch {
-        if !Task.isCancelled {
-          self.error = error
-        }
-      }
     }
   }
-}
+#endif