import * as interfaces from './interfaces';

import {
  DeesElement,
  TemplateResult,
  property,
  customElement,
  html,
} from '@designestate/dees-element';

import * as domtools from '@designestate/dees-domtools';
import '@designestate/dees-catalog';

@customElement('deap-mainmenu')
export class DeapMainmenu extends DeesElement {
  public static demo = () => html`<deap-mainmenu></deap-mainmenu>`;

  // INSTANCE

   // INSTANCE
   @property()
   public tabs: interfaces.ITab[] = [
     {key: 'option 1', iconName: 'visibility', action: () => {}},
     {key: 'option 2', iconName: 'alarm', action: () => {}},
     {key: 'option 3', iconName: 'alarm', action: () => {}},
     {key: 'option 4', iconName: 'alarm', action: () => {}}
   ];

   @property()
   public selectedTab: interfaces.ITab;

  public render(): TemplateResult {
    return html`
      ${domtools.elementBasic.styles}
      <style>
        :host {
          color: #CCC;
          z-index: 10;
          display: block;
          position: relative;
          width: 80px;
          height: 100%;
          background: #3c3c3c;
          box-shadow: 0px 0px 5px rgba(0, 0, 0, 0.5);
          user-select: none;
        }

        .mainlogo {
          width: 80px;
          height: 80px;
          background: rgba(0, 0, 0, 0.4);
        }

        .tabsContainer {
        }

        .tab {
          padding-top: 16px;
          font-size: 25px;
          width: 80px;
          height: 80px;
          text-align: center;
          cursor: pointer;
          transition: color 0.1s, background 0.2s;
        }

        .tab:hover {
          background: rgba(0, 0, 0, 0.3);
        }

        .tab.selectedTab {
          color: #fff;
          background: rgba(0, 0, 0, 0.2);
        }

        .tab .label {
          font-size: 12px;
          margin-top: 5px;
        }

        .tabIndicator {
          background: #4E729A;
          position: absolute;
          width: 7px;
          height: 60px;
          left: 0px;
          top: 90px;
          border-top-right-radius: 7px;
          border-bottom-right-radius: 7px;
          transition: all 0.1s;
        }
      </style>
      <div class="mainlogo"></div>
      <div class="tabsContainer">
        ${this.tabs.map(tabArg => {
          return html`
            <div class="tab ${tabArg === this.selectedTab ? 'selectedTab': null}" @click="${() => {this.updateTab(tabArg)}}">
              <dees-icon iconName="${tabArg.iconName}"></dees-icon>
              <div class="label">${tabArg.key}</div>
            </div>
          `;
        })}
      </div>
      <div class="tabIndicator"></div>
    `;
  }

  private async updateTabIndicator() {
    let selectedTab = this.selectedTab;
    if (!selectedTab) {
      selectedTab = this.tabs[0];
    }
    const tabIndex = this.tabs.indexOf(selectedTab);
    const selectedTabElement: HTMLElement = this.shadowRoot.querySelector(`.tabsContainer .tab:nth-child(${tabIndex + 1})`);
    const tabIndicator: HTMLElement = this.shadowRoot.querySelector('.tabIndicator');
    tabIndicator.style.top = selectedTabElement.offsetTop + 10 + 'px';
  }

  updateTab(tabArg: interfaces.ITab) {
    this.selectedTab = tabArg;
    this.updateTabIndicator();
    this.selectedTab.action();
  }

  firstUpdated() {
    this.updateTab(this.tabs[0]);
  }
}