import {Component, Input, OnDestroy, OnInit, ViewChild} from '@angular/core';
import {ActivatedRoute, Router} from '@angular/router';
import {Session, User} from '../login/utils/helper.class';
import {ConfigurationService} from '../utils/configuration/configuration.service';
import {MenuItem, RootMenuItem} from './menu';
import {EnvProperties} from '../utils/properties/env-properties';
import {Subscription} from 'rxjs';
import {HelpContentService} from '../services/help-content.service';
import {properties} from "../../../environments/environment";
import {LayoutService} from "../dashboard/sharedComponents/sidebar/layout.service";

declare var UIkit;

export interface Header {
  route?: string,
  url?: string,
  title: string,
  logoUrl: string,
  logoSmallUrl: string,
  position: 'left' | 'center' | 'right',
  badge: boolean
  stickyAnimation?: boolean
  menuPosition?:  'center' | 'right'
}

@Component({
  selector: 'navbar',
  templateUrl: 'navigationBar.component.html'
})
export class NavigationBarComponent implements OnInit, OnDestroy {
  @Input() portal: string = 'connect';
  @Input() dark: boolean = false;
  @Input() onlyTop: boolean = false;
  @Input() logoPath: string = 'assets/common-assets/';
  @Input() userMenu: boolean = true;
  @Input() showHomeMenuItem: boolean = false;
  @Input() communityId;
  @Input() showCommunityName: boolean = false;
  @Input() userMenuItems: MenuItem[];
  @Input() menuItems: RootMenuItem [];
  @Input() header: Header;
  @Input() showMenu: boolean = true;
  @Input() homeurl: boolean = true;
  @Input() properties: EnvProperties = properties;
  @Input() user: User;
  @Input() enableSearch: boolean = false;
  @Input() searchRoute: string = '/search/find';
  @Input() searchPlaceHolder: string = 'Search for research results';
  @Input() showLogo: boolean = true;
  @Input() offCanvasFlip: boolean = false;
  keyword: string = '';
  public isAuthorized: boolean = false;
  subs: Subscription[] = [];
  showEntity = {};
  showPage = {};

	public additionalMenuItems: MenuItem[] = [];
	public featuredMenuItems: MenuItem[] = [];

  constructor(private router: Router,
              private  route: ActivatedRoute,
              private config: ConfigurationService,
							private _helpContentService: HelpContentService,
              private layoutService: LayoutService) {}

  ngOnInit() {
    this.initialize();
  }

  ngOnDestroy() {
    for (let sub of this.subs) {
      sub.unsubscribe();
    }
  }
  
  closeCanvas(element) {
    UIkit.offcanvas(element).hide();
  }

  initialize() {
    if ((['provide', 'develop']).indexOf(this.portal) != -1) {
      this.header = {
        route: '/',
        url: null,
        title: this.portal,
        logoUrl: this.logoPath + 'logo-large-' + this.portal + '.png',
        logoSmallUrl: this.logoPath + 'logo-small-' + this.portal + '.png',
        position: 'left',
        menuPosition: 'right',
        badge: true
      };
    }
    this.isAuthorized = Session.isClaimsCurator(this.user) || Session.isPortalAdministrator(this.user);
    if (this.properties.adminToolsAPIURL && this.communityId) {
      //this.config.getCommunityInformation(this.properties, this.communityId).subscribe(data => {
      this.subs.push(this.config.communityInformationState.subscribe(data => {
          if (data) {
            if (data['entities']) {
              for (let i = 0; i < data['entities'].length; i++) {

                this.showEntity['' + data['entities'][i]['pid'] + ''] = data['entities'][i]['isEnabled'];
              }
            }
            if (data['pages']) {
              for (let i = 0; i < data['pages'].length; i++) {
                this.showPage[data['pages'][i]['route']] = data['pages'][i]['isEnabled'];

              }
            }
          }
        },
        error => {
          this.handleError('Error getting community information (e.g. pages,entities) for community with id: ' + this.communityId, error);
        }));
    }
		if(this.properties.environment == "development" && this.portal != 'connect' && this.portal != 'connect-admin' && this.properties.adminToolsPortalType == 'community') {
			this.subs.push(
				this._helpContentService.getMenuItems(this.portal).subscribe(
					data => {
						// Will divide all the custom menu items into 2 arrays.
						// One for the extra(added next to the hardcoded menu items in the existing nav bar) - additionalMenuItems
						// One for the featured(new nav bar below the existing one) - featuredMenuItems
						data.forEach(menuItem => {
							if(menuItem.isFeatured) {
								this.featuredMenuItems.push(menuItem);
							} else {
								this.additionalMenuItems.push(menuItem);
							}
						});
					},
					error => this.handleError("Server error fetching custom menu items", error)
				)
			);
		}
  }
  
  isEnabled(required, enabled) {
    if (!required) {
      return true;
    }


    for (let requiredEntity of required) {
      if (typeof enabled[requiredEntity] === 'undefined' || enabled[requiredEntity] == false) {
        return false;
      }
    }
    return true;
  }

  isAtleastOneEnabled(required, enabled) {
    if (!required || required.length == 0) {
      return true;
    }

    var count = required.length;
    for (let requiredEntity of required) {
      if (typeof enabled[requiredEntity] === 'undefined' || enabled[requiredEntity] == false) {
        count--;
      }
    }
    return (count > 0);
  }

  private handleError(message: string, error) {
    console.error('NavigationBar (component): ' + message, error);
  }
  
  get isHeaderLeft(): boolean {
    return this.header.position === 'left' || (this.header.position === 'center' && this.header.menuPosition === 'center' && this.menuItems.length > 0);
  }

  get currentRoute() {
    return {
      route: this.router.url.split('?')[0].split('#')[0],
      fragment: this.route.snapshot.fragment
    }
  }

  isTheActiveMenu(menu: MenuItem | RootMenuItem): boolean {
    if(menu instanceof MenuItem) {
      return MenuItem.isTheActiveMenu(menu, this.currentRoute, this.layoutService.activeMenuItem);
    } else {
      let item: MenuItem = menu.rootItem;
      item.items = menu.items;
      return MenuItem.isTheActiveMenu(item, this.currentRoute, this.layoutService.activeMenuItem);
    }
  }
}