1 files changed, 118 insertions, 0 deletions
diff --git a/LearnMapKit/DI/DependencyContainer.swift b/LearnMapKit/DI/DependencyContainer.swift
new file mode 100644
index 0000000..f0d1323
--- /dev/null
+++ b/LearnMapKit/DI/DependencyContainer.swift
@@ -0,0 +1,118 @@
+//
+//  DependencyContainer.swift
+//  LearnMapKit
+//
+//  Dependency injection container for the app
+//
+
+import Foundation
+
+@MainActor
+class DependencyContainer {
+
+    // MARK: - Singletons
+    lazy var configurationManager: ConfigurationManager = DefaultConfigurationManager()
+    lazy var aircraftRepository: AircraftRepository = DefaultAircraftRepository(tracker: aircraftTracker)
+    lazy var dataSourceFactory: DataSourceFactory = DefaultDataSourceFactory()
+    lazy var aircraftTracker: AircraftTracker = DefaultAircraftTracker()
+
+    // MARK: - ViewModels
+    func makeAircraftTrackingViewModel() -> AircraftTrackingViewModel {
+        AircraftTrackingViewModel(
+            configurationManager: configurationManager,
+            aircraftRepository: aircraftRepository,
+            dataSourceFactory: dataSourceFactory
+        )
+    }
+
+    func makeSettingsViewModel() -> SettingsViewModel {
+        SettingsViewModel(configurationManager: configurationManager)
+    }
+
+    // MARK: - Data Sources (Factory Methods)
+    func makeFileDataSource(configuration: FileDataSourceConfiguration) -> FileADSBDataSource {
+        FileADSBDataSource(
+            configuration: configuration,
+            tracker: aircraftTracker
+        )
+    }
+
+    func makeNetworkDataSource(configuration: NetworkDataSourceConfiguration) -> NetworkADSBDataSource {
+        NetworkADSBDataSource(
+            configuration: configuration,
+            tracker: aircraftTracker
+        )
+    }
+}
+
+// MARK: - Settings ViewModel
+@MainActor
+class SettingsViewModel: ObservableObject {
+    @Published var configuration: AppConfiguration
+    @Published var hasUnsavedChanges: Bool = false
+    @Published var validationErrors: [String] = []
+    @Published var isValid: Bool = true
+
+    private let configurationManager: ConfigurationManager
+    private var cancellables = Set<AnyCancellable>()
+
+    init(configurationManager: ConfigurationManager) {
+        self.configurationManager = configurationManager
+        self.configuration = configurationManager.getCurrentConfiguration()
+
+        setupBindings()
+    }
+
+    func saveSettings() async {
+        let validation = configurationManager.validateConfiguration(configuration)
+        validationErrors = validation.errors
+        isValid = validation.isValid
+
+        if validation.isValid {
+            do {
+                await configurationManager.updateConfiguration(configuration)
+                try await configurationManager.saveConfiguration()
+            } catch {
+                validationErrors = ["Failed to save: \(error.localizedDescription)"]
+                isValid = false
+            }
+        }
+    }
+
+    func resetToDefaults() async {
+        configuration = AppConfiguration.default
+        await configurationManager.resetToDefaults()
+    }
+
+    func validateCurrentSettings() {
+        let validation = configurationManager.validateConfiguration(configuration)
+        validationErrors = validation.errors
+        isValid = validation.isValid
+    }
+
+    private func setupBindings() {
+        configurationManager.hasUnsavedChanges
+            .receive(on: DispatchQueue.main)
+            .assign(to: &$hasUnsavedChanges)
+
+        $configuration
+            .removeDuplicates()
+            .sink { [weak self] _ in
+                self?.validateCurrentSettings()
+            }
+            .store(in: &cancellables)
+    }
+}
+
+// MARK: - Missing Protocol Implementations (Stubs)
+protocol ADSBMessageDecoder {
+    func decode(_ message: String) -> ADSBDataEvent?
+}
+
+class DefaultADSBMessageDecoder: ADSBMessageDecoder {
+    func decode(_ message: String) -> ADSBDataEvent? {
+        // This would contain the actual decoding logic
+        // For now, return nil as a stub
+        return nil
+    }
+}
+\ No newline at end of file