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

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

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

declare var UIkit: any;

@Component({
  selector: 'my-small-tabs',
  template: `    
    <ul uk-tab class="uk-tab main-tabs uk-margin-remove uk-child-width-expand">
      <li *ngFor="let tab of activeTabs" [class]="'uk-active 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>
      <li class="uk-padding-remove fake_tab">
        <a class="uk-text-center uk-width-1-1 uk-height-1-1">...</a>
        <div #drop_element uk-drop="mode: click" class="uk-drop">
          <div class="uk-card uk-card-body uk-card-default">
            <ul class="uk-list uk-list-divider main-small-tabs" uk-switcher="connect: .small-tabs-content">
              <li *ngFor="let tab of tabs" (click)="selectTab(tab)" [class]="' uk-height-1-1 uk-width-1-1'+(tab.active ? ' uk-text-bold' : '')">
                <a class="uk-display-block uk-height-1-1 uk-width-1-1">{{tab.title}}</a>
              </li>
            </ul>
          </div>
        </div>
      </li>
    </ul>
    
    <div class="uk-switcher small-tabs-content main-tabs-content">
      <ng-content></ng-content>
    </div>
    
  `
})
export class SmallTabsComponent implements AfterContentInit {
  @ViewChild('drop_element') dropElement: ElementRef;

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

  // contentChildren are set
  ngAfterContentInit() {
    // get all active tabs
    this.activeTabs = this.tabs.filter((tab)=>tab.active);

    // if there is no active tab set, activate the first
    if(this.tabs.length > 0 && this.activeTabs.length === 0) {
      this.selectTab(this.tabs.first);
    }
  }

  selectTab(tab: TabComponent){
    console.log("selectTab: "+tab.title);

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

    this.activeTabs = [];
    this.activeTabs.push(tab);

    // activate the tab the user has clicked on.
    tab.active = true;
    this.selectedActiveTab.emit(tab.tabId);

    if(this.dropElement) {
      console.log("dropElement: ",this.dropElement);
      UIkit.drop(this.dropElement.nativeElement).hide(false);
    }
  }
}