import React, { Component } from 'react';

import ReactDOM from 'react-dom';

export default class NavbarGroup extends Component {

  state = {

    showDropdown: false

  }

  componentWillMount() {

    document.addEventListener('click', this.handleClickOutside, false);

  }

  componentWillUnmount() {

    document.removeEventListener('click', this.handleClickOutside, false);

  }

  handleClickOutside = (e) => {

    if(!ReactDOM.findDOMNode(this).contains(e.target)) {

      this.hideDropDown();

    }

  }

  toggleShowDropdown = () => {

    this.setState({showDropdown: !this.state.showDropdown});

  }

  hideDropDown = () => {

    this.setState({showDropdown: false});

  }

  render() {

    const {currentGroup, groups, onSelect} = this.props;

    const onClickGroup = (e) => {

      onSelect(e.target.dataset.groupname);

      this.hideDropDown();

    }

    if (currentGroup) {

      const currentGroupName = currentGroup.get('name');

      return (

        <li className={`nav-item dropdown navs ${this.state.showDropdown?'show':''}`}>

          <a className="nav-link dropdown-toggle" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded={this.state.showDropdown} onClick={this.toggleShowDropdown} onBlur={this.hideDropDown}>

          { currentGroupName }

          &nbsp;<span className="caret"></span>

          </a>

          <ul className={`dropdown-menu ${this.state.showDropdown?'show':''}`} aria-labelledby="navbarDropdown">

          { groups && groups.map((group, key) => {

            const groupName = group.get('name');

            const className = (groupName === currentGroupName)?'active':null;

              return <li key={key} className={className} onClick={onClickGroup}><a data-groupname={groupName}>{ groupName }</a></li>

            })

          }

          <li onClick={onClickGroup} key="-1"><a data-groupname="__create_group__">Créer un groupe...</a></li>

          </ul>

        </li>

      );

    } else {

      return null;

    }

  }

}