kodeinApplication.kt

fun Application.kodeinApplication(
    kodeinMapper: Kodein.MainBuilder.(Application) -> Unit = {}
) {
    val application = this

    val kodein = Kodein {
        bind<Application>() with instance(application)
        kodeinMapper(this, application)
    }

    routing {
        val sicknessService: SicknessService = findService(kodein)
        val weightService: WeightService = findService(kodein)
        val statsService: StatsService = findService(kodein)

        retrofitService(service = Services(
            sicknessService = sicknessService,
            weightService = weightService,
            statsService = statsService
        ))
    }
}

private inline fun <reified S : Any> findService(kodein: Kodein): S {
    val service: S by kodein.instance()
    return service
}