import {Component, HostListener, Inject, OnInit} from '@angular/core';
import {NavigationEnd, NavigationStart, Router} from '@angular/router';
import {LoginService} from './services/app-user-service/login-service';
import {PromotionService} from './services/army-management/promotion.service';
import {AwardingService} from './services/army-management/awarding.service';
import {RouteConfig} from './app.config';
import {DOCUMENT} from '@angular/common';
import {DomSanitizer} from '@angular/platform-browser';
import {MatIconRegistry} from '@angular/material';
import {SpinnerService} from './services/user-interface/spinner/spinner.service';
import {TranslateService} from '@ngx-translate/core';

declare function require(url: string);

@Component({
  selector: 'app-root',
  templateUrl: 'app.component.html',
  styleUrls: ['app.component.css', 'style/load-indicator.css']
})
export class AppComponent implements OnInit {

  config = RouteConfig;

  loading = false;

  scrollTopVisible = false;

  scrollBtnVisibleVal = 100;

  // a map of svgIcon names and associated svg file names
  // to load from assets/icon folder
  svgIcons = {
    'add': 'outline-add_box-24px',
    'add-user': 'twotone-person_add-24px',
    'award': 'award',
    'arrow-up': 'baseline-arrow_upward-24px',
    'chevron-left': 'baseline-chevron_left-24px',
    'chevron-right': 'baseline-chevron_right-24px',
    'delete': 'baseline-delete-24px',
    'edit': 'baseline-edit-24px',
    'more-vert': 'baseline-more_vert-24px',
    // --------STATISTICS---------
    'battle': 'stats/battle',
    'highscore': 'stats/highscore',
    'stats-chart': 'stats/statsChart',
    // --SCOREBOARD--
    'death': 'stats/scoreboard/death',
    'flagTouch': 'stats/scoreboard/flagTouch',
    'friendlyFire': 'stats/scoreboard/friendlyFire',
    'kill': 'stats/scoreboard/kill',
    'respawn': 'stats/scoreboard/respawn',
    'revive': 'stats/scoreboard/revive',
    'stats-detail': 'stats/scoreboard/round-assessment-24px',
    'vehicleAir': 'stats/scoreboard/vehicleAir',
    'vehicleHeavy': 'stats/scoreboard/vehicleHeavy',
    'vehicleLight': 'stats/scoreboard/vehicleLight',
  };

  version = 'v'.concat(require('./../../../package.json').version);

  constructor(public loginService: LoginService,
              private promotionService: PromotionService,
              private awardingService: AwardingService,
              private router: Router,
              private iconRegistry: MatIconRegistry,
              private sanitizer: DomSanitizer,
              private spinnerService: SpinnerService,
              private translate: TranslateService,
              @Inject(DOCUMENT) private document) {
    this.initMaterialSvgIcons();

    this.spinnerService.spinnerActive.subscribe(active => this.toggleSpinner(active));

    router.events.subscribe(event => {
      if (event instanceof NavigationStart) {
        this.spinnerService.activate();
      }
      if (event instanceof NavigationEnd) {
        this.spinnerService.deactivate();
        const currentUrl = this.router.url;

        // scroll to top on route from army overview to user detail and back
        if (currentUrl.includes('/overview') || currentUrl.includes('/public')) {
          this.scrollToTop();
        }
      }
    });
  }

  ngOnInit() {
    this.translate.setDefaultLang('de');
    if (this.loginService.hasPermission(2)) {
      const fraction = this.loginService.getCurrentUser().squad.fraction;
      this.promotionService.checkUnconfirmedPromotions(fraction);
      this.awardingService.checkUnprocessedAwards(fraction);
    }
  }

  toggleSpinner(active) {
    this.loading = active;
  }

  initMaterialSvgIcons() {
    Object.keys(this.svgIcons).forEach(key => {
      const fileUri = '../assets/icon/'.concat(this.svgIcons[key])
        .concat('.svg');
      this.iconRegistry.addSvgIcon(key, this.sanitizer.bypassSecurityTrustResourceUrl(fileUri));
    });
  }

  @HostListener('window:scroll', [])
  onWindowScroll() {
    this.scrollTopVisible = document.body.scrollTop > this.scrollBtnVisibleVal
      || document.documentElement.scrollTop > this.scrollBtnVisibleVal;
  }

  logout() {
    this.loginService.logout();
    setTimeout(() => {
      this.router.navigate([RouteConfig.overviewPath]);
    }, 500);
  }

  scrollToTop() {
    this.document.body.scrollTop = 0; // For Safari
    this.document.documentElement.scrollTop = 0; // For Chrome, Firefox, IE and Opera
  }

  // TODO: use!
  // private setLanguage(settings: SettingsState) {
  //   const { language } = settings;
  //   if (language) {
  //     this.translate.use(language);
  //   }
  // }
}