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/army-management/rank.service';
import {Fraction} from '../../utils/fraction.enum';
import {UIHelpers} from '../../utils/global.helpers';

@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();

  radioModel = '';

  readonly fraction = Fraction;

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

  deleteRank(rank) {
    const fraction = rank.fraction === 'OPFOR' ? Fraction.OPFOR : Fraction.BLUFOR;
    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);
  }

}