opt-cc/static/src/app/decorations/edit-decoration/edit-decoration.component.ts

import {Component, ViewChild} from "@angular/core";
import {ActivatedRoute, Router} from "@angular/router";
import {NgForm} from "@angular/forms";
import {Decoration} from "../../models/model-interfaces";
import {DecorationService} from "../../services/army-management/decoration.service";
import {Subscription} from "rxjs/Subscription";
import {Fraction} from "../../utils/fraction.enum";

@Component({
  templateUrl: './edit-decoration.component.html',
  styleUrls: ['./edit-decoration.component.css', '../../style/entry-form.css', '../../style/overview.css']
})
export class EditDecorationComponent {

  subscription: Subscription;

  decoration: Decoration = {name: '', fraction: '', sortingNumber: 0};

  fileList: FileList;

  showImageError = false;

  imagePreviewSrc;

  showSuccessLabel = false;

  @ViewChild(NgForm) form: NgForm;

  readonly fraction = Fraction;

  constructor(private route: ActivatedRoute,
              private router: Router,
              private decorationService: DecorationService) {
  }

  ngOnInit() {
    this.subscription = this.route.params
                            .map(params => params['id'])
                            .filter(id => id != undefined)
                            .flatMap(id => this.decorationService.getDecoration(id))
                            .subscribe(decoration => {
                              this.decoration = decoration;
                              this.imagePreviewSrc = 'resource/decoration/' + this.decoration._id + '.png?' + Date.now();
                            });
  }

  ngOnDestroy() {
    this.subscription.unsubscribe();
  }

  fileChange(event) {
    if (!event.target.files[0].name.endsWith('.png')) {
      this.showImageError = true;
      this.fileList = undefined;
    } else {
      this.showImageError = false;
      this.fileList = event.target.files;
    }
  }

  saveDecoration(fileInput) {
    let file: File;
    if (!this.decoration._id) {
      if (this.fileList) {
        file = this.fileList[0];
        this.decorationService.submitDecoration(this.decoration, file)
            .subscribe(rank => {
              this.router.navigate(['..'], {relativeTo: this.route});
            })
      } else {
        return window.alert(`Bild ist ein Pflichtfeld`);
      }
    } else {
      if (this.fileList) {
        file = this.fileList[0];
      }
      delete this.decoration['__v'];
      this.decorationService.submitDecoration(this.decoration, file)
          .subscribe(rank => {
            setTimeout(() => {
              this.imagePreviewSrc = 'resource/decoration/' + this.decoration._id + '.png?' + Date.now();
            }, 300);
            fileInput.value = '';
            this.showSuccessLabel = true;
            setTimeout(() => {
              this.showSuccessLabel = false;
            }, 2000)
          })
    }
  }

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

}