import { MatTree, get } from './mat-tree';
import { MatTreeInternalComponent } from './mat-tree-internal.component';

export class MatTreeController {
  private tree: MatTree;

  constructor(private component: MatTreeInternalComponent) {
    this.tree = this.component.tree;
    // this.treeService = this.component.treeService;
  }

  // public unselect(): void {
  //   if (this.isSelected()) {
  //     this.component.onNodeUnselected({ button: MouseButtons.Left });
  //   }
  // }

  // public isSelected(): boolean {
  //   return this.component.isSelected;
  // }

  // public expand(): void {
  //   if (this.isCollapsed()) {
  //     this.component.onSwitchFoldingType();
  //   }
  // }

  public isExpanded(): boolean {
    return this.tree.isNodeExpanded();
  }

  public collapse(): void {
    if (this.isExpanded()) {
      this.component.onSwitchFoldingType();
    }
  }

  // public isCollapsed(): boolean {
  //   return this.tree.isNodeCollapsed();
  // }

  // public toTreeModel(): MatTreeModel {
  //   return this.tree.toTreeModel();
  // }

  // public rename(newValue: string): void {
  //   this.tree.markAsBeingRenamed();
  //   this.component.applyNewValue({ type: 'keyup', value: newValue });
  // }

  // public remove(): void {
  //   this.component.onMenuItemSelected({ nodeMenuItemAction: NodeMenuItemAction.Remove });
  // }

  // public addChild(newNode: MatTreeModel): void {
  //   if (this.tree.hasDeferredChildren() && !this.tree.childrenWereLoaded()) {
  //     return;
  //   }

  //   const newTree = this.tree.createNode(Array.isArray(newNode.children), newNode);
  //   this.treeService.fireNodeCreated(newTree);
  // }

  // public addChildAsync(newNode: MatTreeModel): Promise<Tree> {
  //   if (this.tree.hasDeferredChildren() && !this.tree.childrenWereLoaded()) {
  //     return Promise.reject(
  //       new Error('This node loads its children asynchronously, hence child cannot be added this way')
  //     );
  //   }

  //   const newTree = this.tree.createNode(Array.isArray(newNode.children), newNode);
  //   this.treeService.fireNodeCreated(newTree);

  //   // This will give TreeInternalComponent to set up a controller for the node
  //   return new Promise(resolve => {
  //     setTimeout(() => {
  //       resolve(newTree);
  //     });
  //   });
  // }

  // public changeNodeId(id: string | number) {
  //   if (!id) {
  //     throw Error('You should supply an id!');
  //   }

  //   if (this.treeService.hasController(id)) {
  //     throw Error(`Controller already exists for the given id: ${id}`);
  //   }

  //   this.treeService.deleteController(this.tree.id);
  //   this.tree.id = id;
  //   this.treeService.setController(this.tree.id, this);
  // }

  // public reloadChildren(): void {
  //   this.tree.reloadChildren();
  // }

  // public setChildren(children: MatTreeModel[]): void {
  //   if (!this.tree.isLeaf()) {
  //     this.tree.setChildren(children);
  //   }
  // }

  // public startRenaming(): void {
  //   this.tree.markAsBeingRenamed();
  // }

  public check(): void {
    this.component.onNodeChecked();
  }

  public uncheck(): void {
    this.component.onNodeUnchecked();
  }

  public isChecked(): boolean {
    return this.tree.checked;
  }

  public isIndetermined(): boolean {
    return get(this.component, 'checkboxElementRef.nativeElement.indeterminate');
  }

  // public allowSelection() {
  //   this.tree.selectionAllowed = true;
  // }

  // public forbidSelection() {
  //   this.tree.selectionAllowed = false;
  // }

  // public isSelectionAllowed(): boolean {
  //   return this.tree.selectionAllowed;
  // }
}