import okhttp3.OkHttpClient
import okhttp3.Response
import okhttp3.sse.internal.RealEventSource

object EventSources {
  @Deprecated(
    message = "required for binary-compatibility!",
    level = DeprecationLevel.HIDDEN,
  )
  @JvmStatic
  fun createFactory(client: OkHttpClient) = createFactory(client as Call.Factory)

  @JvmStatic
  fun createFactory(callFactory: Call.Factory): EventSource.Factory {

  override fun proceed(request: Request): Response {
    check(index < interceptors.size)

    calls++

    if (exchange != null) {
      check(exchange.finder.routePlanner.sameHostAndPort(request.url)) {
        "network interceptor ${interceptors[index - 1]} must retain the same host and port"
      }
      check(calls == 1) {
        "network interceptor ${interceptors[index - 1]} must call proceed() exactly once"
      }
    }

 * on [ExchangeCodec], which handles the actual I/O.
 */
class Exchange(
  internal val call: RealCall,
  internal val eventListener: EventListener,
  internal val finder: ExchangeFinder,
  private val codec: ExchangeCodec,
) {
  /** True if the request body need not complete before the response body starts. */
  internal var isDuplex: Boolean = false
    private set