package eventDemo.libs.command

import kotlinx.coroutines.DelicateCoroutinesApi
import kotlinx.coroutines.GlobalScope
import kotlinx.coroutines.launch

/**
 * Represent a Command stream.
 *
 * The stream contains a list of all actions yet to be executed.
 */
interface CommandStream<C : Command> {
  /**
   * A class to implement success/failed action.
   */
  interface ComputeStatus {
    suspend fun ack()

    suspend fun nack()
  }

  /**
   * Apply an action to all command income in the stream.
   */
  suspend fun process(action: CommandBlock<C>)

  @OptIn(DelicateCoroutinesApi::class)
  fun blockAndProcess(action: CommandBlock<C>) {
    GlobalScope.launch {
      process(action)
    }
  }
}

typealias CommandBlock<C> = suspend CommandStream.ComputeStatus.(C) -> Unit