import { Injectable } from "@angular/core";
import { Subject } from 'rxjs/Subject';

@Injectable()
export class MainService {

    isCollapsed: boolean = false;
    title: string = "Cosmos of Angular";
    // Observable string sources
    private menuSource = new Subject<boolean>();
    private titleSource = new Subject<string>();

    // Observable string streams
    missionMenu$ = this.menuSource.asObservable();
    missionTitle$ = this.titleSource.asObservable();

    // Service message commands
    menuMission(menu: boolean) {
        this.isCollapsed = menu;
        this.menuSource.next(menu);
    }

    titleMission(title: string) {
        this.titleSource.next(title);
    }

}