The project follows a simplified form of MVI architecturarl patten
An Intent represents an action performed by the user. For example let's say the user Clicks a rockStart to see the details, that will be RockStarClickedIntent . All Intents from a View are grouped (or merged) and sent to the viewModel through the same door (method)
The State is actually what everything is all about. Once the Result of an operation is produced, the ViewModel will try to perform a form of State Management System in order to produce a new State. The State we are talking about here is basically a ViewState. This means that we are trying to represent what the end user sees on the screen in a structured way.
So basically everything will start with a State and finish with anther State.
The View also keep it's usual role. The View will still have a reference to the ViewModel and will have one important function called render(). This function will be called each time a new State change is observed and will be responsible for rendering the new State (ViewState) to the Screen.
The View will also call the ViewModel only time to provide Intents as a stream.
A Contract is defined in the presentation layer to establish the terms of communication between the ViewModel and View.
That contract will contract de declaration of ViewStates and Intents
Everything will be done according to this contract
We made sure to follow some basic SOLID principles. The one mostly used is the Dependency Inversion principle. And we use Koin as Dependency Injection framework to help implement de Dependency Inversion principle without much effort.
We've a built a very basic Memory Cache system to hold data for each session. We attempt to use that memory cache as Single Source of Truth (SSoT). That means we only load data from network if the memory cache is empty. The memory cache is based on a simple HashMap
We store the Favorites in Android Shared Preference system and take advantage of basic custom Serializer class in order to only work with strings
- Moshi (first time using it)
- Coil Image loader (first time using it)
- Simplify some of the algorithms
- Add some KtLint checking
- Write Unit Tests