phaufe/Dads

*BA DUM TSSS*

Just an app with lame dad jokes content to fill up your day.

MVP

This MVP version features:

• Feed walks you through the latest dad jokes,
• Browse back seen jokes & share your favorite ones,
• Notification to remind you up with latest available jokes,
• Light/ Dark theme based on preference.

Stacks

Foundation

• App Startup - Orchestrating single ContentProvider at startup.
• Coroutines - Performing asynchronous code with sequential manner.
• Dagger Hilt - The DI framework w/ Jetpack integration.
• DataStore - Preferences in nutshell but with steroid.
• Flow - Reactive streams based on coroutines, just like Rx. But simpler.
• Fragment - The UI host.
• JavaPoet - Personal diff-state engine printer.
• Lifecycle - Coroutines teams up with Android's component lifecycle.
• Navigation component - The key player for adopting single-activity architecture with ease.
• Room - ORM for SQLite database. Also, try out its integration with Database Inspector.
• View Binding - Providing safe access to view.
• ViewModel - Presenter with its semi data persistence behavior.
• WorkManager - Background job scheduler. You should also try out its integration with WorkManager Inspector.

UI

• BottomSheetDialogFragment - As the name suggests.
• ConcatAdapter - Helping me group ViewHolder based on types in isolation.
• ConstraintLayout - Helping me manage positioning & alignment with ease.
• Lottie - Providing animation asset.
• Material Components - Helping me present Material Design.
• MotionLayout - Animating view has never been easier.
• ViewPager2 - Personal option over RecyclerView when dealing view snapping experience.

Internal

• LiveListAdapter
  ListAdapter w/ every visible cell (ViewHolder) is reactive. Cell acts like observer of data they hold, so it will auto-refresh if their related data is updated.
  
• RenderExecutor Processor
  Processor for RenderWith annotation. Diff-state engine generator for rendering view component.

Remote

• Apollo GraphQL - Client for requesting GraphQL API.
• OkHttp - Request interceptors. Pipeline before remote API call.

Testing

• Espresso - Android UI tests.
• Hilt Testing - For swapping production dependencies with test doubles.
• Truth - Assertion framework in tests by Google.

Health

• Firebase Crashlytics - Collecting crash report for production environment.
• LeakCanary (Debug) - Memory leak detector.
• StrictMode (Debug) - Tool for checking if any should-be-background operation is done on main thread.

MAD Scorecard

Architecture

Dads adopts MVVM with Unidirectional flow (UDF) pattern.

Moreover, view components are rendered based on their related changed states only performed by diff-state engine, so the render operation is done more efficiently.

Design Principles

• Elegant Objects (EO).
• O.L.I.D, where's the S?
• The Clean Architecture.
• Cursor-based pagination over offset-based.

Testing Principles

• Black-box/ behavior-driven testing with UI as the sole SUT (very recommended read and talk).
• No mocking framework! Only fake type as test double, if required.

GraphQL Engine

Jokes are requested from proprietary GraphQL service, the Dads-Engine. Check it out 🔥

How to run

• Since this project employs GraphQL stack, you need to download the schema first:
  • Go to hosted GraphQL Playground,
  • Open tab SCHEMA at the right side. DOWNLOAD it,
  • Put the schema.json in directory: libs/lib_remote/src/main/graphql/com/bael/dads/lib/remote/,
  • Or you can run this command as alternative.

    ./gradlew downloadApolloSchema --endpoint="https://dads-engine.herokuapp.com" --schema="libs/lib_remote/src/main/graphql/com/bael/dads/lib/remote/schema.json"
    

• Set JWT key in keys.properties file (located in project root folder):

JWT=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJhcHAiOiJEYWRzISIsInR5cGUiOiJVc2VyIn0.46oGvluHExsPIOS9d925RNYrk_Y9eke0Zm45ZbqjaXs

• Have fun!

Caveat

After went through How to run section but you still get a "Service issue" state, hit TRY AGAIN? a couple of times until success. That's because I host data to the server with basic free plan - potato spec, well, it's just for research purpose anyway 😂.

Contributing

Let's get in touch if you're interested in contributing. Fork it, submit your PR.
Also feel free to open new issue, request features, or any kind of your support (join stargazers ⭐️ | treat me coffee 😁).

Those wonder what's next, check out my planned Roadmap by GitHub project board.

Licenses