/**
* @Component Name: MinicartComponent
* @Module: Home
* @Module Functionality : To display the minicart
* @Creation Date: August 12,2017
* @Author: sbaireddy
* @Version: 1.0
*/
import { Component, ViewChild, Input, OnInit, OnDestroy } from '@angular/core';
import { Router } from '@angular/router';

import * as Constants from '../../shared/constants';
import { Cart } from '../../shared/modal/cart';
import CartUtils from '../../shared/cart.utils';

import { SharedService } from '../../shared/shared.service';
import { CartService } from '../../services/cart.service';

@Component({
    moduleId: module.id,
    selector: 'minicart-cmp',
    templateUrl: 'minicart.component.html',
    styleUrls: ['minicart.component.css']
})

export class MinicartComponent implements OnInit, OnDestroy {
    private COMPONENT_NAME: string = 'MinicartComponent';
    checkoutResponse: any = {};
    storeId: number; // update storeid
    cart: Cart;
    refTypeNew: string = Constants.REF_TYPE_NEW;
    refTypeReturn: string = Constants.REF_TYPE_RETURN;
    refTypeExchange: string = Constants.REF_TYPE_EXCHANGE;
    subscription: any;

    constructor(
        public router: Router,
        public sharedService: SharedService,
        public cartService: CartService) {
    }
    /**
    * This function is used to initialize the directive/component after Angular
    * first displays the data-bound properties.It is invoked only once when the
    * directive is instantiated.
    * @returns void
    */
    ngOnInit() {
        const METHOD_NAME: string = 'ngOnInit()';
        // Start-Switch Channel-Store id update
        this.sharedService.storeId.subscribe((val: number) => {
            this.storeId = val;
        });
        // End-Switch Channel-Store id update
        this.cart = this.cartService.getCart();
        // to update the state tax for new customer  below subscription is required.
        this.subscription = this.cartService.hasUpdate.subscribe((item) => {
            if (item) { this.cart = this.cartService.getCart(); }
            // if(this.cart && this.cart.customer) this.customerTaxUpdate();
        });
    }
    /**
    * Cleanup just before Angular destroys the directive/component.
    * Unsubscribe Observables and detach event handlers to avoid memory leaks.
    */
    ngOnDestroy() {
        const METHOD_NAME: string = 'ngOnDestroy()';
        this.cart = null;
        this.subscription.unsubscribe();
    }

    /** This function is used to restrict user from navigating to shopping cart if cart is empty.
     * @returns void
     */
    showShoppingCart(): void {
        const METHOD_NAME: string = 'showShoppingCart()';
        if (this.cart) {
            this.router.navigate(['/home/fullcart']);
        } else {
            this.sharedService.showErrorMessage('_ERR_EMPTY_CART', false);
        }
    }
}