koin_version = '1.0.2'

// Add Jcenter to your repositories if needed
repositories {
	jcenter()    
}

// Koin for Kotlin
implementation "org.koin:koin-core:$koin_version"
// Koin extended & experimental features
implementation "org.koin:koin-core-ext:$koin_version"
// Koin for Unit tests
testImplementation "org.koin:koin-test:$koin_version"
// Koin for Java developers
implementation "org.koin:koin-java:$koin_version"

// Koin for Android
implementation "org.koin:koin-android:$koin_version"
// Koin Android Scope feature
implementation "org.koin:koin-android-scope:$koin_version"
// Koin Android ViewModel feature
implementation "org.koin:koin-android-viewmodel:$koin_version"

// AndroidX (based on koin-android)
// Koin AndroidX Scope feature
implementation "org.koin:koin-androidx-scope:$koin_version"
// Koin AndroidX ViewModel feature
implementation "org.koin:koin-androidx-viewmodel:$koin_version"

// Koin for Ktor Kotlin
implementation "org.koin:koin-ktor:$koin_version"

// Given some classes 
class Controller(val service : BusinessService) 
class BusinessService() 

// just declare it 
val myModule = module { 
  single { Controller(get()) } 
  single { BusinessService() } 
} 

fun main(vararg args : String) { 
  // start Koin!
  startKoin(listOf(myModule))
} 

class MyApplication : Application() {
  override fun onCreate(){
    super.onCreate()
    // start Koin!
    startKoin(this, listOf(myModule))
  } 
} 

// Just inject in a simple Activity 
class MyActivity() : AppCompatActivity() {

    // lazy inject BusinessService into property
    val service : BusinessService by inject()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        
        // or directly get any instance
        val service : BusinessService = get()
    }
}

// Controller & BusinessService are declared in a module
class Controller(val service : BusinessService){ 
  
  fun hello() {
     // service is ready to use
     service.sayHello()
  }
} 

// Injected by constructor
class MyViewModel(val repo : MyRepository) : ViewModel(){
}

// declare ViewModel using the viewModel keyword
val myModule : Module = module {
  viewModel { MyViewModel(get()) }
  single { MyRepository() }
}

// Just get it
class MyActivity() : AppCompatActivity() {

  // lazy inject MyViewModel
  val vm : MyViewModel by viewModel()
}

// Just tag your class with KoinTest to unlock your testing power
class SimpleTest : KoinTest { 
  
  // lazy inject BusinessService into property
  val service : BusinessService by inject()

  @Test
  fun myTest() {
      // You can start your Koin configuration
      startKoin(myModules)

      // or directly get any instance
      val service : BusinessService = get()

      // Don't forget to close it at the end
      closeKoin()
  }
}