/**
 * 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 uk-tab class="uk-tab uk-text-truncate main-tabs uk-margin-remove uk-child-width-expand" uk-switcher="connect: .main-tabs-content">
      <!--          + (tab.active ? ' uk-active' : '')-->
      <li *ngFor="let tab of tabs" (click)="selectTab(tab)" [class.active]="tab.active" [class]="'uk-padding-remove '+(tab.statistics ? ' statistics ' : '')">
        <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="uk-switcher main-tabs-content">
      <ng-content></ng-content>
    </div>

<!--    <ul class="nav nav-tabs">-->
<!--      <li *ngFor="let tab of tabs" (click)="selectTab(tab)" [class.active]="tab.active">-->
<!--        <a href="#">{{tab.title}}</a>-->
<!--      </li>-->
<!--    </ul>-->
<!--    <ng-content></ng-content>-->
  `//,
  // styles: [
  //   `
  //   .tab-close {
  //     color: gray;
  //     text-align: right;
  //     cursor: pointer;
  //   }
  //   `
  // ]
})
export class TabsComponent implements AfterContentInit {

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

  // contentChildren are set
  ngAfterContentInit() {
    // get all active tabs
    let activeTabs = this.tabs.filter((tab)=>tab.active);
console.log("ACTIVE TABS: "+activeTabs.length);
    // if there is no active tab set, activate the first
    if(activeTabs.length === 0) {
      this.selectTab(this.tabs.first);
    }
  }

  selectTab(tab: TabComponent){
    // deactivate all tabs
    this.tabs.toArray().forEach(tab => tab.active = false);

    // activate the tab the user has clicked on.
    tab.active = true;
    console.log("ACTIVE TAB SET TO: "+tab.title);
    this.selectedActiveTab.emit(tab.tabId);

  }
}