/**
 * The main component that renders single TabComponent
 * instances.
 */

import {
  Component,
  ContentChildren,
  QueryList,
  AfterContentInit, Output, EventEmitter,
} from '@angular/core';

import { TabComponent } from './tab.component';

@Component({
  selector: 'my-tabs',
  template: `
    <ul [class]="(tabs.toArray().length > 2 ? 'uk-visible@m' : '') + ' uk-tab main-tabs uk-margin-remove uk-child-width-expand'"
        uk-tab uk-switcher="connect: .tabs-content" uk-height-match="target: .tab-header">
      <li *ngFor="let tab of tabs.toArray(); let i=index" 
          [class]="'uk-padding-remove'+(tab.statistics ? ' statistics ' : '') + (i == 0?' uk-active':'')"
          (click)="selectTab(tab)">
        <a class="uk-width-1-1 uk-height-1-1">
          <div class="tab-header">{{tab.title}}</div>
          <div *ngIf="tab.num" class="number">{{tab.num | number}}</div>
          <div *ngIf="tab.statistics" class="number">
            <svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24">
              <path d="M0 0h24v24H0z" fill="none"></path>
              <path d="M10 20h4V4h-4v16zm-6 0h4v-8H4v8zM16 9v11h4V9h-4z"></path>
            </svg>
          </div>
        </a>
      </li>
    </ul>
    <div [class]="(tabs.toArray().length > 2 ? 'uk-visible@m' : '') + ' uk-switcher tabs-content main-tabs-content'">
      <ng-content></ng-content>
    </div>
  `
})
export class TabsComponent {

  @ContentChildren(TabComponent) tabs: QueryList<TabComponent>;
  @Output() public selectedActiveTab: EventEmitter<any> = new EventEmitter();

  selectTab(tab: TabComponent){
    // activate the tab the user has clicked on.
    this.selectedActiveTab.emit(tab.tabId);
  }
}