Code for the article: "Authorization and retrying of web requests for OkHttp and Retrofit"

AuthorizationInterceptor.kt

class AuthorizationInterceptor(
    private val authorizationRepository: AuthorizationRepository
) : Interceptor {
    override fun intercept(chain: Interceptor.Chain): Response {
        val newRequest = chain.request().signedRequest()
        return chain.proceed(newRequest)
    }

    private fun Request.signedRequest() = when (AuthorizationType.fromRequest(this)) {
        AuthorizationType.ACCESS_TOKEN -> signWithFreshAccessToken()
        AuthorizationType.CLIENT_CREDENTIALS -> signWithClientCredentialsToken()
        AuthorizationType.NONE -> this
    }
}