import {Component, OnInit} from "@angular/core";
import {Location} from "@angular/common";

import {FormControl} from "@angular/forms";
import {ActivatedRoute, Router} from "@angular/router";
import {Observable} from "rxjs/Observable";
import {Rank} from "../../models/model-interfaces";
import {RankService} from "../../services/rank-service/rank.service";

@Component({
  selector: 'rank-list',
  templateUrl: './rank-list.component.html',
  styleUrls: ['./rank-list.component.css', '../../style/select-list.css']
})
export class RankListComponent implements OnInit {

  selectedRankId: string | number = null;

  ranks$: Observable<Rank[]>;

  searchTerm = new FormControl();

  public radioModel: string;

  constructor(private rankService: RankService,
              private router: Router,
              private route: ActivatedRoute,
              private location: Location) {
  }

  ngOnInit() {

    this.ranks$ = this.rankService.ranks$;

    const paramsStream = this.route.queryParams
      .map(params => decodeURI(params['query'] || ''))
      .do(query => this.searchTerm.setValue(query));

    const searchTermStream = this.searchTerm.valueChanges
      .debounceTime(400)
      .do(query => this.adjustBrowserUrl(query));

    Observable.merge(paramsStream, searchTermStream)
      .distinctUntilChanged()
      .switchMap(query => this.rankService.findRanks(query, this.radioModel))
      .subscribe();

  }

  openNewRankForm() {
    this.selectedRankId = null;
    this.router.navigate([{outlets: {'right': ['new']}}], {relativeTo: this.route});
  }

  selectRank(rankId: string | number) {
    this.selectedRankId = rankId;
    this.router.navigate([{outlets: {'right': ['edit', rankId]}}], {relativeTo: this.route});
  }

  filterRanks() {
    this.ranks$ = this.rankService.findRanks(this.searchTerm.value, this.radioModel);
  }

  deleteRank(rank) {
    const fraction = rank.fraction === 'OPFOR' ? 'CSAT' : 'NATO';
    if (confirm('Soll der Rang ' + rank.name + ' (' + fraction + ') wirklich gelöscht werden?')) {
      this.rankService.deleteRank(rank)
        .subscribe((res) => {
        })
    }
  }

  adjustBrowserUrl(queryString = '') {
    const absoluteUrl = this.location.path().split('?')[0];
    const queryPart = queryString !== '' ? `query=${queryString}` : '';

    this.location.replaceState(absoluteUrl, queryPart);
  }

}