import {AutomationsDelegate} from "./AutomationsDelegate";
import Mapper, {QAutomationEvent} from "./Mapper";
import {AutomationsApi} from './AutomationsApi';
import {ScreenPresentationConfig} from './ScreenPresentationConfig';
import {callAutomationsNative, noop, subscribeOnAutomationsNativeEvents} from './utils';

const EVENT_SCREEN_SHOWN = "automations_screen_shown";
const EVENT_ACTION_STARTED = "automations_action_started";
const EVENT_ACTION_FAILED = "automations_action_failed";
const EVENT_ACTION_FINISHED = "automations_action_finished";
const EVENT_AUTOMATIONS_FINISHED = "automations_finished";

export default class AutomationsInternal implements AutomationsApi {

  private automationsDelegate: AutomationsDelegate | null = null;

  setDelegate(delegate: AutomationsDelegate) {
    this.automationsDelegate = delegate;
    subscribeOnAutomationsNativeEvents<QAutomationEvent>('subscribe', this.onNativeEvent);
  }

  async showScreen(screenId: string): Promise<void> {
    return await callAutomationsNative('showScreen', [screenId]);
  }

  setScreenPresentationConfig(config: ScreenPresentationConfig, screenId?: string): void {
    const data = Mapper.convertScreenPresentationConfig(config);
    callAutomationsNative('setScreenPresentationConfig', [data, screenId]).then(noop);
  }

  private onNativeEvent = (event: QAutomationEvent) => {
    switch (event.event) {
      case EVENT_SCREEN_SHOWN:
        this.automationsDelegate?.automationsDidShowScreen(event.payload.screenId);
        break;
      case EVENT_ACTION_STARTED:
        this.automationsDelegate?.automationsDidStartExecuting(Mapper.convertActionResult(event.payload));
        break;
      case EVENT_ACTION_FAILED:
        this.automationsDelegate?.automationsDidFailExecuting(Mapper.convertActionResult(event.payload));
        break;
      case EVENT_ACTION_FINISHED:
        this.automationsDelegate?.automationsDidFinishExecuting(Mapper.convertActionResult(event.payload));
        break;
      case EVENT_AUTOMATIONS_FINISHED:
        this.automationsDelegate?.automationsFinished();
        break;
    }
  }
}