Summary of Changes

Hello @mlykotom, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly refactors the ViewModel management strategy within the Kotlin Multiplatform project, particularly for the iOS application. The core IOSViewModelStoreOwner functionality is now natively implemented in Swift, enhancing integration with SwiftUI's lifecycle and environment. Concurrently, the shared Kotlin module introduces a centralized and generic ViewModel factory helper, simplifying ViewModel instantiation across both Android and iOS platforms and improving overall code consistency and maintainability.

Highlights

• iOS ViewModel Management Refactor: The IOSViewModelStoreOwner logic has been moved from the shared Kotlin module to native Swift (ViewModelStoreOwnerProvider.swift), providing a more idiomatic and robust way to manage ViewModel lifecycles within SwiftUI, including automatic clearing of the ViewModel store when a view disappears.
• Generic ViewModel Retrieval: The new Swift IOSViewModelStoreOwner class introduces a generic viewModel method, allowing for the retrieval of any ViewModel type from the store, replacing the previous specific get*ViewModel methods.
• Centralized ViewModel Factory Helper (KMP Shared): A new ViewModelFactory.kt file has been added to the shared Kotlin module. It introduces a reusable vmFactory helper and a creationExtras function, which streamlines the creation of ViewModel factories and simplifies dependency injection (specifically for AppContainer) across both Android and iOS platforms.
• SwiftUI Integration Enhancements: An ObservableValueWrapper has been introduced to make the AppContainer observable by SwiftUI, and the ViewModelStoreOwnerProvider SwiftUI View is now used to inject the IOSViewModelStoreOwner into the SwiftUI environment, enabling proper ViewModel scoping and access throughout the view hierarchy.
• Android ViewModel Instantiation Simplification: The Android UI code in CartScreen.kt and ListScreen.kt has been updated to utilize the new shared creationExtras helper, removing redundant remember blocks and making ViewModel instantiation cleaner and more consistent with the new shared logic.

Code Review

This pull request refactors the ViewModel management for the iOS app by moving the IOSViewModelStoreOwner from Kotlin to Swift. This is a great architectural improvement that makes the iOS side more idiomatic and leverages SwiftUI's lifecycle management features effectively. The introduction of ViewModelStoreOwnerProvider and the generic vmFactory in Kotlin significantly cleans up the code and reduces boilerplate.

I've left a few comments on potential improvements:

• Using safer casting in Swift.
• Removing redundant calculations in a SwiftUI view.
• Removing debug println statements from ViewModels.

One high-severity issue to address is the presence of two identical files: ViewModelStoreOwnerProvider.swift and ViewModelStoreProvider.swift. The Xcode project file (.pbxproj) seems to reference ViewModelStoreProvider.swift, but the Swift code uses the type ViewModelStoreOwnerProvider. This inconsistency should be resolved by deleting one file and renaming the other to match the type name, and updating the project file accordingly. This will prevent confusion and future maintenance issues.

Overall, this is a solid PR that improves the iOS architecture.

This is looking good. We need to fix the duplicate file, but most of the other changes are small.

Looking good! Please run ./gradlew spotlessApply for formatting.