angular5-course/src/app/core/header/header.component.ts

import { Component, OnInit } from "@angular/core";
import { Store } from "@ngrx/store";
import { Observable } from "rxjs/Observable";

import { DataStorageService } from "../../shared/data-storage.service";
import * as fromApp from '../../ngrx/app.reducers';
import * as fromAuth from '../../auth/ngrx/auth.reducers';
import * as AuthActions from '../../auth/ngrx/auth.actions';
import * as RecipeActions from '../../recipes/ngrx/recipe.actions';

@Component({
    selector: 'app-header',
    templateUrl: './header.component.html'
})
export class HeaderComponent implements OnInit {
    authState: Observable<fromAuth.State>;

    constructor(private dataStorageService: DataStorageService, private store: Store<fromApp.AppState>) {}

    ngOnInit() {
        this.authState = this.store.select('auth')
    }

    onSaveData() {
        this.store.dispatch(new RecipeActions.StoreRecipes());
    }

    onFetchData() {
        this.store.dispatch(new RecipeActions.FetchRecipes());
    }

    onLogout() {
        this.store.dispatch(new AuthActions.Logout());
    }
}