apolloclient.kt

object Utils {

    //To run on emulator use http://10.0.2.2:4000/graphql
    const val BASE_URL = "http://10.0.2.2:4000/graphql"
    private var apClient: ApolloClient? = null
    private var httpClient: OkHttpClient? = null

    @JvmStatic
    fun getApolloClient(context: Context): ApolloClient? {

        //If Apollo Client is not null, return it else make a new Apollo Client.
        //Helps in singleton pattern.
        apClient?.let {
            return it
        } ?: kotlin.run {
            apClient = ApolloClient.builder()
                .okHttpClient(getOkhttpClient(context)!!)             
                .serverUrl(BASE_URL)
                .build()
        }
        return apClient
    }

    private fun getOkhttpClient(context: Context): OkHttpClient? {
        httpClient?.let {
            return it
        } ?: kotlin.run {
            httpClient = OkHttpClient.Builder()
                //Adding HttpLoggingInterceptor() to see the response body and the results.
                .addInterceptor(LoggingInterceptor())
                .build()
        }
        return httpClient
    }
  }
}