The purpose of this app is to record the position at time of a square draggable with finger. It contains:

• A screen that able the user to move the square and print the current position
• A settings dialog that allow the user to tweak the square and the app theme
• A screen that able to visualize history

The app ui layer is based on Jetpack Compose

The implementation tries to follow as much as possible the clean architecture principles.

app/src/main/java/com/interview/square
├── core
│   ├── data
│   │   ├── repository
│   │   └── service
│   ├── domain
│   │   ├── model
│   │   ├── repository
│   │   └── service
│   └── ui
│       └── theme
├── di
├── extensions
├── feature_position_history
│   ├── data
│   ├── domain
│   └── ui
├── feature_square_move
│   └── ui
└── screens

At the root we can find:

• core package that holds common code for the whole application
• di package that contains koin module
• extensions is an helper package for kotlin extensions
• feature_* packages separe the different features of the app, here a feature is consider as a screen
• screens contains the sealed class helper for the navigation

Inside core and features packages, we got the 3 clean architecture layers:

• domain package holds the models and all the interfaces, free as much as possible of the platform specific class and code
• data contains a concrete implementation of the domain layer
• ui contains all components that are relative to the ui

• Compose - for ui layer
• Koin - for dependency injection

Possible improvement:

• Relocate and reorganize all the mappers, they should not be inside domain layer
• Create libraries to improve the modularity of the app
• Improve current position display
• Inject ThemeManager
• Make home screen floating elements like PositionHistoryCard and floating buttons move when the square is on them