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path: root/vid-webpack-master/src/app/drawingBoard/service-planning/drawing-board-tree/dragAndDrop/dragAndDrop.service.ts
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import {Injectable} from "@angular/core";
import {NgRedux} from "@angular-redux/store";
import {AppState} from "../../../../shared/store/reducers";
import {DragAndDropModel} from "./dragAndDrop.model";
import {FeatureFlagsService, Features} from "../../../../shared/services/featureFlag/feature-flags.service";
import * as _ from 'lodash';

@Injectable()
export class DragAndDropService {

  constructor(private store: NgRedux<AppState>) {
  }

  isFlagOn(): boolean {
    return FeatureFlagsService.getFlagState(Features.FLAG_1911_INSTANTIATION_ORDER_IN_ASYNC_ALACARTE, this.store);
  }


  /***********************************************************************************************
   if the falg is ON and nodes have same parent
   ***********************************************************************************************/
  isAllowDrop(from: any, to: any): boolean {
    return this.isFlagOn() && this.isSameParent(from, to);
  }

  private isSameParent(from: any, to: any): boolean {
    try {
      return from.parent.data.trackById === to.parent.parent.data.trackById;
    } catch (e) { //parent not found
      return false;
    }
  }

  /********************************************************************
   * manage drawing-board drag and drop operation
   * @param nodes - array with elements data.
   * @param tree - tree instance
   * @param node - element information
   * @param from - element from information
   * @param to - element to information
   ************************************************************/

  drop(store, instanceId: string, nodes, {from, to}): void {

    if (!this.isFlagOn()) return;

    if (this.isAllowDrop(from, to)) {
      let vfModules = nodes.find((parent) => {
        return parent.trackById === to.parent.parent.data.trackById;
      }).children;
      this.array_move(vfModules, from.index, to.parent.index, instanceId, to.parent.parent.data.vnfStoreKey);
    }

    /*  let firstLevelNames : DragAndDropModel[] = [
        new DragAndDropModel('VF',true),
        new DragAndDropModel('VL',true),
        new DragAndDropModel('VFmodule',false)
      ];

      const fromObject = _.find(firstLevelNames, ['type', from.data.type]);
      const toObject = _.find(firstLevelNames, ['type', to.parent.data.type]);

      /!***********************************************************************************************
       if the type are the same and there in same level + same parent -> then change element position
       ***********************************************************************************************!/
      if(fromObject.isFirstLevel === toObject.isFirstLevel){ // moving element in the same level and in the first level
        if(fromObject.isFirstLevel){
          this.array_move(nodes, from.index , to.parent.index, instanceId);
        } else if(fromObject.isFirstLevel === toObject.isFirstLevel){
          /!* check if they have the same parent *!/
          if(from.parent.data.trackById === to.parent.parent.data.trackById){
            let vfModules = nodes.find((parents)=> {
              return parents.trackById === to.parent.parent.data.trackById;
            }).children;
            this.array_move(vfModules, from.index , to.parent.index, instanceId, to.parent.parent.data.vnfStoreKey);
          }
        }
      }*/
  }


  /********************************************************************
   * move element inside array with elements position
   * @param arr - array with elements data.
   * @param originalPosition - element original position
   * @param destPosition - element dest position
   * @param destPinstanceIdosition - instance id
   ******************************************************************/
  array_move(arr, originalPosition, destPosition, instanceId: string, parentStoreKey?): Array<any> {

    let moved_node = arr[originalPosition]

    arr.splice(originalPosition, 1);

    arr.splice(destPosition, 0, moved_node);

    arr.forEach((item, index) => {
      if (item.position !== index + 1) {
        item.position = index + 1;
        item.updatePoistionFunction(this, item, instanceId, parentStoreKey);
      }
    });

    return arr;
  };
}