App Screenshots:

Decisions:

• Persistence of favorite cat id to Room database on clicking Heart Icon.
• Each item in LazyColumn is independently observing the favorites database through LiveData in FavoritesViewModel

Architecture:

Dependency Inversion:

• The Repository class has three dependencies injected.
• Each dependency can be mocked separately and the repository can be tested for appropriate behaviour.
• This helps us follow Dependency Inversion part of SOLID principle.

Open Closed Principle:

• ApiMapper is an interface that can implemented to customize for each feature API call.
• This was done to follow Open Closed Principle.
• The ApiMapper interface will have reserved implementation of converting Input datatype to Output datatype.
• At the same time, the extended class will have the open flexibility of providing how the Input and Output datatype will be converted.