import {Component, OnInit, ViewChild} from '@angular/core';
import {ActivatedRoute, Router} from '@angular/router';
import {AppUser, Rank, Squad} from '../../models/model-interfaces';
import {SquadService} from '../../services/army-management/squad.service';
import {Subscription} from 'rxjs/Subscription';
import {NgForm} from '@angular/forms';
import {Fraction} from '../../utils/fraction.enum';
import {SnackBarService} from '../../services/user-interface/snack-bar/snack-bar.service';
import {AppUserService} from '../../services/app-user-service/app-user.service';


@Component({
  templateUrl: './edit-app-user.component.html',
  styleUrls: ['./edit-app-user.component.scss'],
})
export class EditAppUserComponent implements OnInit {

  @ViewChild(NgForm) form: NgForm;

  subscription: Subscription;

  appUser: AppUser = {};

  appUserSquadId;

  squads: Squad[] = [];

  ranks: Rank[] = [];

  ranksDisplay = 'none';

  error: string;

  readonly fraction = Fraction;

  constructor(private router: Router,
              private route: ActivatedRoute,
              private appUserService: AppUserService,
              private squadService: SquadService,
              private snackBarService: SnackBarService) {
  }

  ngOnInit() {
    this.subscription = this.route.params
                            .map(params => params['id'])
                            .filter(id => id !== undefined)
                            .flatMap(id => this.appUserService.getAppUser(id))
                            .subscribe(appUser => {
                              this.appUser = appUser;
                              this.appUserSquadId = appUser.squad ? appUser.squad._id : 'null';
                            });

    this.squadService.findSquads().subscribe(squads => {
      this.squads = squads;
    });
  }

  saveUser() {
    const updateObject: AppUser = {
      _id: this.appUser._id,
      username: this.appUser.username,
      squad: this.appUserSquadId === 'null' ? null : this.appUserSquadId,
      activated: this.appUser.activated,
      permission: this.appUser.permission,
    };

      this.appUserService.updateUser(updateObject)
        .subscribe(appUser => {
          this.appUser = appUser;
          this.appUserSquadId = appUser.squad ? appUser.squad._id : 'null';
          this.snackBarService.showSuccess('generic.save.success');
        });
  }

  cancel() {
    this.router.navigate([this.appUser._id ? '../..' : '..'], {relativeTo: this.route});
    return false;
  }

  /**
   * compare ngValue with ngModel to assign selected element
   */
  equals(o1: Squad, o2: Squad) {
    if (o1 && o2) {
      return o1._id === o2._id;
    }
  }
}