ch.viseon.openOrca.client.ClientOrcaImpl.kt Maven / Gradle / Ivy

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/*
 * Copyright 2017 viseon gmbh
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package ch.viseon.openOrca.client

import ch.viseon.openOrca.share.*
import kodando.rxjs.Rx
import kodando.rxjs.filter
import kodando.rxjs.map

class ClientOrcaImpl(val commandListExecutor: CommandListExecutor, val transmitter: Transmitter) : ClientOrca {

  val clientModelStore = ch.viseon.openOrca.share.impl.DefaultPresentationModelStore()

  private val eventSubject = kodando.rxjs.Rx.Subject()

  override fun executeCommands(commands: Array) {
    val appliedCommands = commandListExecutor.execute(clientModelStore, Rx.Observable.from(commands))

    val commandsToSend = mutableListOf()
    val eventsFromInputCommands = mutableListOf>()
    appliedCommands
        .subscribe {
          if (it.applied) {
            eventsFromInputCommands.add(it.events)
          }
          if (it.applied || it.commandData.policy.isForceSend()) {
            commandsToSend.add(it.commandData)
          }
        }

    val responseCommands = transmitter.sendCommands(commandsToSend)
    val responseEvents: Rx.IObservable = commandListExecutor.execute(clientModelStore, responseCommands)

    Rx.Observable.merge(
        Rx.Observable.from(eventsFromInputCommands.toTypedArray()),
        responseEvents
            .filter { it.applied }
            .map { it.events })
        .subscribe { events ->
          events.forEach { eventSubject.next(it) }
        }
  }

  override fun observeModelStore(): kodando.rxjs.Rx.IObservable {
    return eventSubject
        .filter { it is ch.viseon.openOrca.share.ModelStoreChangeEvent }
        .map { it as ch.viseon.openOrca.share.ModelStoreChangeEvent }
  }

  override fun observeModel(modelId: ModelId): kodando.rxjs.Rx.IObservable {
    return eventStreamAsPropertyChangeEvent()
        .filter { it.modelId == modelId }
  }

  override fun observeModel(modelType: ModelType): kodando.rxjs.Rx.IObservable {
    return eventStreamAsPropertyChangeEvent()
        .filter { it.modelType == modelType }
  }

  override fun observeProperty(modelId: ModelId, propertyName: PropertyName): kodando.rxjs.Rx.IObservable {
    return eventStreamAsPropertyChangeEvent()
        .filter { it.modelId == modelId }
        .filter { it.valueChangeEvent.property == propertyName }
        .map { it.valueChangeEvent }
  }

  private fun eventStreamAsPropertyChangeEvent(): kodando.rxjs.Rx.IObservable {
    return eventSubject
        .filter { it is ch.viseon.openOrca.share.PropertyChangeEvent }
        .map { it as ch.viseon.openOrca.share.PropertyChangeEvent }
  }

  override fun registerNamedCommand(actionName: String): kodando.rxjs.Rx.IObservable {
    return eventSubject
        .filter { it is ch.viseon.openOrca.share.ActionEvent }
        .map { it as ch.viseon.openOrca.share.ActionEvent }
        .filter { it.actionName == actionName }
  }

  override fun model(modelType: ModelType): Array {
    return clientModelStore[modelType].toTypedArray()
  }

  override fun model(modelId: ModelId): PresentationModel {
    return clientModelStore[modelId]
  }

  override fun contains(modelId: ModelId): Boolean {
    return clientModelStore.contains(modelId)
  }

  override fun contains(modelId: ModelType): Boolean {
    return clientModelStore.contains(modelId)
  }

  override fun getAllModels(): Array {
    return clientModelStore.getAllModels().toTypedArray()
  }
}