import {
  Component,
  ViewEncapsulation,
  NgZone,
  ElementRef,
  ViewChild,
  OnInit,
  OnDestroy,
  AfterViewInit,
  ChangeDetectionStrategy,
  Input
} from '@angular/core';

declare var kendo: any;

@Component({
  // tslint:disable-next-line:component-selector
  selector: 'ng-treelist',
  templateUrl: './tree-list.component.html',
  styleUrls: ['./tree-list.component.scss'],
  encapsulation: ViewEncapsulation.None,
  changeDetection: ChangeDetectionStrategy.OnPush
})
export class TreeListComponent implements OnInit, AfterViewInit, OnDestroy {
  @Input()
  public options: kendo.ui.TreeListOptions;

  @ViewChild('treelist', { static: false })
  treelistEl: ElementRef;

  private _treelist: any;

  constructor(private zone: NgZone, private elementRef: ElementRef) { }

  ngOnInit() { }

  ngAfterViewInit() {
    const treeList = kendo.jQuery(this.treelistEl.nativeElement);

    this.zone.runOutsideAngular(() => {
      this._treelist = treeList
        .kendoTreeList(this.options)
        .data('kendoTreeList');
    });
  }

  ngOnDestroy(): void {
    kendo.destroy(this.elementRef.nativeElement);
  }

  get dataSource(): any {
    return this._treelist && this._treelist.dataSource;
  }

  get content(): JQuery {
    return this._treelist && this._treelist.content;
  }

  get thead(): JQuery {
    return this._treelist && this._treelist.thead;
  }

  get tbody(): JQuery {
    return this._treelist && this._treelist.tbody;
  }

  public addRow(parentRow: string | Element | JQuery = ''): void {
    return this._treelist && this._treelist.addRow(parentRow);
  }

  public editRow(row: string | JQuery): void {
    if (!row) {
      return;
    }

    const internalRow = row instanceof jQuery ? row : kendo.jQuery(row);
    return this._treelist && this._treelist.editRow(internalRow);
  }

  public removeRow(row: string | Element | JQuery): void {
    if (!row) {
      return;
    }

    const internalRow = row instanceof jQuery ? row : kendo.jQuery(row);
    return this._treelist && this._treelist.removeRow(internalRow);
  }

  public expand(row: string | Element | JQuery): void {
    if (!row) {
      return;
    }

    const internalRow = row instanceof jQuery ? row : kendo.jQuery(row);
    return this._treelist && this._treelist.expand(internalRow);
  }

  public select(row: string | Element | JQuery): JQuery {
    if (!row) {
      return;
    }

    const internalRow = row instanceof jQuery ? row : kendo.jQuery(row);
    return this._treelist && this._treelist.select(internalRow);
  }

  public itemFor(model: kendo.data.TreeListModel | Object): JQuery {
    if (!model) {
      return;
    }

    return this._treelist && this._treelist.itemFor(model);
  }

  public dataItem(row: string | Element | JQuery): kendo.data.TreeListModel {
    if (!row) {
      return;
    }

    const internalRow = row instanceof jQuery ? row : kendo.jQuery(row);
    return this._treelist && this._treelist.dataItem(internalRow);
  }

  public clearSelection(): void {
    return this._treelist && this._treelist.clearSelection();
  }
}