import { Injectable } from '@angular/core';
import { WebSocketService } from './websocket.service';
import { Subject, BehaviorSubject, merge } from 'rxjs';
import { ConfigServiceBase } from './config.service.base';

@Injectable()
export class DashboardConfigService extends ConfigServiceBase {
  keys = ['frontend.dashboard'];

  layout = new BehaviorSubject<string>('terminal-ide-web');
  hideMessages = new BehaviorSubject<boolean>(false);
  iframeUrl = new BehaviorSubject<string>('');
  showUrlBar = new BehaviorSubject<boolean>(false);
  terminalMenuItem = new BehaviorSubject<string>('terminal');
  reloadIframeOnDeploy = new BehaviorSubject<boolean>(false);
  enabledLayouts = new BehaviorSubject<Array<string>>([
    'terminal-ide-web',
    'terminal-ide-vertical',
    'terminal-web',
    'ide-web-vertical',
    'terminal-ide-horizontal',
    'terminal-only',
    'ide-only',
    'web-only'
  ]);
}

@Injectable()
export class IdeConfigService extends ConfigServiceBase {
  keys = ['frontend.ide'];

  autoSaveInterval = new BehaviorSubject<number>(444);
  showDeployButton = new BehaviorSubject<boolean>(true);
  deployButtonText = new BehaviorSubject<any>({
    'TODEPLOY': 'Deploy',
    'DEPLOYED': 'Deployed',
    'DEPLOYING': 'Reloading app...',
    'FAILED': 'Deployment failed'
  });
}

@Injectable()
export class SiteConfigService extends ConfigServiceBase {
  keys = ['frontend.site'];

  askReloadSite = new BehaviorSubject<boolean>(false);
  documentTitle = new BehaviorSubject<string>('Avatao Tutorials');
}

@Injectable()
export class ConfigReadyService {
  configDone = new Subject<void>();
  readyNotifiers: Array<any>;

  constructor(
    private webSocketService: WebSocketService,
    private ide: IdeConfigService,
    private dashboard: DashboardConfigService,
    private site: SiteConfigService
  ) {
    this.readyNotifiers = [
      this.ide.configDone,
      this.dashboard.configDone,
      this.site.configDone
    ];
  }

  init() {
    this.webSocketService.connect();

    const recvdConfigDone = new Subject<void>();
    this.readyNotifiers.push(recvdConfigDone);
    this.webSocketService.observeControl<any>('frontend.ready').subscribe(() => {
      recvdConfigDone.next();
      recvdConfigDone.complete();
    });

    merge(...this.readyNotifiers).subscribe({complete: () => {
      this.configDone.next();
      this.configDone.complete();
    }});
  }
}