/*
 * Copyright 2017 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import {Component, OnInit, HostListener} from '@angular/core';
import {Router, NavigationEnd} from '@angular/router';
import {KeycloakService} from '../keycloak-service/keycloak.service';
import {TranslateUtil} from '../ngx-translate/translate.util';
import {SideNavItem, Active} from '../page/side-nav-item';
import {Icon} from '../page/icon';
import {ResponsivenessService, SideNavClasses, MenuClickListener} from "../responsiveness-service/responsiveness.service";
import {Media} from "../responsiveness-service/media";
import {Referrer} from "../page/referrer";

@Component({
    selector: 'app-side-nav',
    templateUrl: './side-nav.component.html',
    styleUrls: ['./side-nav.component.css']
})
export class SideNavComponent implements OnInit, MenuClickListener {

    private referrer: Referrer;
    private sideNavClasses: SideNavClasses = this.respSvc.calcSideNavWidthClasses();
    private isFirstRouterEvent: boolean = true;
    
    public navItems: SideNavItem[];
    
    constructor(private router: Router, 
                private translateUtil: TranslateUtil, 
                private respSvc: ResponsivenessService,
                private keycloakService: KeycloakService) {
        this.referrer = new Referrer(translateUtil);
        this.navItems = [
            this.makeSideNavItem("account", new Icon("pficon", "user"), "active"),
            this.makeSideNavItem("password", new Icon("pficon", "key")),
            this.makeSideNavItem("authenticator", new Icon("pficon", "cloud-security")),
            this.makeSideNavItem("sessions", new Icon("fa", "clock-o")),
            this.makeSideNavItem("applications", new Icon("fa", "th"))
        ];

        this.router.events.subscribe(value => {
            if (value instanceof NavigationEnd) {
                const navEnd = value as NavigationEnd;
                this.setActive(navEnd.url);
                
                const media: Media = new Media();
                if (media.isSmall() && !this.isFirstRouterEvent) {
                    this.respSvc.menuClicked();
                }
                
                this.isFirstRouterEvent = false;
            }
        });
        
        this.respSvc.addMenuClickListener(this);
        
        // direct navigation such as '#/password'
        this.setActive(window.location.hash.substring(1));
    }

    // use itemName for translate key, link, and tooltip
    private makeSideNavItem(itemName: string, icon: Icon, active?: Active): SideNavItem {
        const localizedName: string = this.translateUtil.translate(itemName);

        return new SideNavItem(localizedName, itemName, localizedName, icon, active);
    }
    
    private logout() {
        this.keycloakService.logout();
    }

    public menuClicked(): void {
        this.sideNavClasses = this.respSvc.calcSideNavWidthClasses();
    }
    
    @HostListener('window:resize', ['$event'])
    private onResize(event: any) {
        this.sideNavClasses = this.respSvc.calcSideNavWidthClasses();
    }
    
    setActive(url: string) {
        for (let navItem of this.navItems) {
            if (("/" + navItem.link) === url) {
                navItem.setActive("active");
            } else {
                navItem.setActive("");
            }
        }

        if ("/" === url) {
            this.navItems[0].setActive("active");
        }
    }

    ngOnInit() {

    }

}
