import {
  Component,
  ViewEncapsulation,
  ComponentRef,
  ElementRef,
  Input,
  EventEmitter,
  Output,
  ViewChild
} from '@angular/core';
declare var UIkit: any;

@Component({
  selector: 'modal-loading',
  template: `
<!--  uk-modal="center:true"-->
<!--  <div [class]="(!isOpen)?'uk-modal ':'uk-modal uk-open uk-animation-fade'"   [open]="!isOpen" uk-modal   tabindex="-1" role="dialog" >-->
  <div *ngIf="!isMobile" #loading_element class="uk-modal" [id]="id" uk-modal="container: #modal-container">
    <div class="uk-modal-dialog" role="">
      <!--div class="modal-content"-->

        <div class="uk-modal-body">
          <div >
          <h4 class="text-center" >{{message}}</h4>
<!--          <div class="uk-spinner"></div>-->
            <loading></loading>
            <ng-content></ng-content>

          </div>
        </div>

      </div>
    <!--/div-->
  </div>

<div *ngIf="isMobile" #loading_element class="uk-modal-full" [id]="id" uk-modal="container: #modal-container">
  <div class="uk-modal-dialog">
    <div #header class="uk-modal-header uk-flex uk-flex-middle" [ngClass]="classTitle">
      <div [class.uk-invisible]="!title"
           class="uk-width-expand uk-padding-small uk-padding-remove-vertical uk-flex uk-flex-center">
        <h4 class="uk-margin-remove">{{title}}</h4>
      </div>
    </div>
    <div #body class="uk-modal-body uk-overflow-auto">
      <div class="uk-container uk-height-1-1">
        <h4 class="text-center">{{message}}</h4>
        <loading></loading>
        <ng-content></ng-content>
      </div>
    </div>
  </div>
</div>
  
  
  
<!--  <div #element [class]="(!isOpen)?'uk-modal ':'uk-modal uk-animation-fade uk-open'"  [open]="!isOpen"   uk-modal="container: #modal-container">-->
<!--    <div class="uk-modal-dialog">-->
<!--      <div class="uk-modal-body uk-animation-fast uk-text-left">-->
<!--        <h4 class="text-center" >{{message}}</h4>-->
<!--        <div class="uk-animation-fade uk-margin-top  uk-width-1-1" role="alert">-->
<!--          <span class="loading-gif  uk-align-center" ></span>-->
<!--        </div>-->
<!--        <ng-content></ng-content>-->
<!--      </div>-->
<!--    </div>-->
<!--  </div>-->
  
  
  
  <!--div   class="uk-modal uk-open" aria-hidden="false" style="display: block; overflow-y: scroll;">
                            <div class="uk-modal-dialog" tabindex="">
                                <div class="uk-modal-spinner"></div>
                            </div>
                        </div-->
  `,
  encapsulation: ViewEncapsulation.None,
})
/**
  * API to an open alert window.
  */
export class ModalLoading{
  private static MODAL_LOADING_COUNTER: number = 0;

  id: string = "modal-loading";
  title: string;

  @Input() isMobile: boolean = false;
  @Input() classTitle: string = "uk-background-primary uk-light";
  @Input() public message:string ="Loading";
  @ViewChild('loading_element') element: ElementRef;

  /**
    * if the value is true alert will be visible or else it will be hidden.
    */
  // public isOpen:boolean=false;
  /**
    * Emitted when a ok button was clicked
    * or when Ok method is called.
    */
  @Output() public alertOutput:EventEmitter<any> = new EventEmitter();
  constructor( public _elementRef: ElementRef){

  }

  ngOnInit() {
    ModalLoading.MODAL_LOADING_COUNTER++;
    this.id = 'modal-loading-' + ModalLoading.MODAL_LOADING_COUNTER;
  }

  ngOnDestroy() {
    if(typeof document !== "undefined") {
      const element = document.getElementById("modal-container");
      for (let i = element.childNodes.length - 1; i >= 0; --i) {
        let child: ChildNode = element.childNodes[i];
        if (child['id'] == this.id) {
          child.remove();
        }
      }
    }
  }

  /**
       * Opens a alert window creating backdrop.
       */
  open(){
    // this.isOpen= true;
    UIkit.modal(this.element.nativeElement).show();

  }

  close(){
    // this.isOpen = false;
    UIkit.modal(this.element.nativeElement).hide();
  }
}