import {
    Component, QueryList, AfterViewInit, ElementRef, Input, Type, ContentChildren, ViewChild
} from "@angular/core";

declare var jQuery: any;

@Component({
  selector: "sm-tab",
  template: `
<div #tab>
    <ng-content></ng-content>
</div>  `
})
export class SemanticTabComponent implements AfterViewInit {
  @Input() tab: number;
  @Input() title: string;
  @Input() active: boolean;
  @ViewChild("tab") tabEl: ElementRef;

  ngAfterViewInit() {
    this.tabEl.nativeElement.parentElement.classList.add("ui", "tab", "bottom", "attached", "segment");

    if (this.active) {
      this.tabEl.nativeElement.parentElement.classList.add("active");
    }
  }
}

@Component({
  selector: "sm-tabs",
  template: `<div class="ui top attached tabular menu" #menu>
  <a class="item" [ngClass]="{'active': tab.active}" *ngFor="let tab of tabs; let i = index" [attr.data-tab]="i">{{tab.title}}</a>
</div>
<ng-content></ng-content>
`
})
export class SemanticTabsComponent implements AfterViewInit {
  @ContentChildren(<Type<any>>SemanticTabComponent) tabs: QueryList<SemanticTabComponent>;
  @ViewChild("menu") menu: ElementRef;

  constructor(public elementRef: ElementRef) {}

  ngAfterViewInit() {

    this.tabs
        .map((cmp: SemanticTabComponent, index: number) => {
          cmp.tabEl.nativeElement.parentElement.setAttribute("data-tab", index.toString());
        });

    jQuery(this.menu.nativeElement.getElementsByClassName("item")).tab({
      childrenOnly: true,
      context: jQuery(this.elementRef.nativeElement)
    });
  }
}