• Instead of UserDefaults for caching, any other framework could be used thanks to the protocol-oriented approach. UserDefaults was chosen only for its simplicity.
• It would be beneficial to introduce Dependency Injection (e.g., Swiftject or Needle) for more flexible dependency management.
• SwiftUI was selected because it was explicitly mentioned in the job requirements, however, I also have experience working with UIKit.
• The Config folder should contain the Secrets.swift file, which holds the API keys and tokens (ignored in git, with a Secrets.sample.swift template included).

Demo videos: tvOS demo is available here, and the iOS demo is available here.

• Genres screen: cached for 1 hour locally; tap a genre to open the movie grid
• Movies screen: grid with posters + titles, infinite scrolling with prefetching
• Image loading via AsyncImage (TMDB w200 image base)
• Clean MVVM structure with protocol-based services
• tvOS target that reuses the same SwiftUI code

• Genres screen: Done
• Navigate to movies on genre tap: Done (NavigationStack + Router)
• Data from TMDB: Done (themoviedb.org v3 API)
• Genres cache: Done (UserDefaults TTL = 1 hour)
• Movies pagination: Done (load-more prefetch; threshold-based)
• Bonus – Grid: Done (2 columns on iPhone, 4 on tablet)
• Bonus – tvOS support: Done (separate tvOS target, shared sources)

• Swift 6, SwiftUI, Concurrency (async/await)
• Xcode 16.3+
• iOS 18.0+, tvOS 18.0+
• Alamofire (SPM)

• Pattern: MVVM with a state
• Networking: Request protocol + NetworkService.execute<R: Request>(R) async
• Services:
  • TMDBService: domain-specific client built on NetworkService
  • CacheService: UserDefaults-based genre cache with 1-hour TTL
• Views: SwiftUI screens bound to view models with @StateObject
• Router: simple enum-based router injected via environment

1. GenresViewModel loads genres
   • Checks CacheService.isGenresCacheValid() and loadGenres() first
   • If invalid/missing, requests TMDBService.fetchGenres() then saveGenres()
2. Tap a genre -> Router pushes MoviesView
3. MoviesViewModel loads first page via TMDBService.discoverMovies(genreId:page:)
   • Keeps page/totalPages and appends unique movies while paginating
   • Triggers loadMoreIfNeeded near the end via onAppear threshold

• Unit tests for GenresViewModel and MoviesViewModel (loading, cache hit/miss, pagination, error handling)
• tvOS improvments
• Pull-to-refresh and manual retry on movies list
• Image caching (e.g., via Nuke/Kingfisher or URLCache tuning)
• Error handling improvements