import PropTypes from 'prop-types';

import React, { Component } from 'react';

import { connect } from 'react-redux';

import { withRouter } from 'react-router';

import { bindActionCreators } from 'redux';

// import logo from './logo.svg';

import { Navbar, Nav, NavItem, NavDropdown, MenuItem, Modal, Button } from 'react-bootstrap';

import * as authActions from '../actions/authActions';

import { forceSync } from '../actions/networkActions';

import { groupSetCurrent } from '../actions/groupActions';

import { isAuthenticated, getCurrentUser, getOnline, getCurrentGroup, getGroups } from '../selectors/authSelectors';

import { isSynchronizing, isSynchronized } from '../selectors/syncSelectors';

import './Navbar.css';

const LoginNav = ({isAuthenticated, currentUser, history, authActions, onLogout}) => {

  const onClickSettings = (e) => {

    e.preventDefault();

    history.push('/settings');

  }

  const onClickLogin = (e) => {

    e.preventDefault();

    history.push('/login');

  }

  if (isAuthenticated) {

    return (

      <NavDropdown title={ currentUser.get('username') } id="user-dropdown">

        <MenuItem onClick={onClickSettings}>Settings</MenuItem>

        <MenuItem onClick={onLogout}>Logout</MenuItem>

      </NavDropdown>

    );

  }

  return (

    <NavItem onClick={onClickLogin} href="/login">Login</NavItem>

  );

}

const Online = ({ online }) => {

  return (

    <NavItem>

      <span className="material-icons" style={{ color: online ? '#2ECC71' : '#E74C3C' }}>signal_wifi_4_bar</span>

    </NavItem>

  )

}

const SyncButton = ({ onSyncClick, isSynchronizing, isSynchronized, id }) => {

  const classnames = "material-icons"

    + ((!isSynchronized)?" sync-button-not-synchronized":"")

    + ((isSynchronizing)?" sync-button-synchronizing":"");

  let title = "Synchronize";

  let clickCb = onSyncClick;

  if(isSynchronizing) {

    title = "Synchronizing...";

    clickCb = () => {};

  } else if (!isSynchronized) {

    title += ": not synchronized";

  }

  return (

    <NavItem title={title} onClick={clickCb} id={id || null}>

      <span className={classnames}>&#xE627;</span>

    </NavItem>

  )

}

const GroupStatus = ({currentGroup, groups, onSelect}) => {

  if(currentGroup) {

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

    return (

      <NavDropdown title={currentGroupName} id="group-dropdown" onSelect={onSelect}>

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

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

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

            return <MenuItem className={className} key={key} eventKey={groupName}>{ groupName }</MenuItem>

          }

        )}

        <MenuItem key="-1" eventKey="__create_group__">Créer un groupe...</MenuItem>

      </NavDropdown>

    )

  } else {

    return null;

  }

}

class AppNavbar extends Component {

  state = {

    showModal: false

  }

  closeModal = () => {

    this.setState({ showModal: false });

  }

  onClickHome = (e) => {

    e.preventDefault();

    this.props.history.push('/');

  }

  isSynchronized = () => {

    return this.props.isSynchronized;

  }

  onClickLogout = (e) => {

    e.preventDefault();

    const isSynchronized = this.isSynchronized();

    if (isSynchronized) {

      this.logout();

    } else {

      this.setState({ showModal: true })

    }

  }

  confirmLogout = () => {

    const isSynchronized = this.isSynchronized();

    if (!isSynchronized) {

      this.props.authActions.resetAll();

    }

    this.logout();

    this.closeModal();

  }

  logout = () => {

    this.props.authActions.logout();

    this.props.history.push('/');

  }

  onClickSessions = (e) => {

    e.preventDefault();

    this.props.history.push('/sessions');

  }

  onSyncClick = (e) => {

    e.preventDefault();

    this.props.networkActions.forceSync();

  }

  onGroupSelect = (groupName) => {

    if(groupName === "__create_group__") {

      this.props.history.push('/create-group');

    } else {

      this.props.groupActions.groupSetCurrent(groupName);

    }

  }

  render() {

    return (

      <Navbar fluid inverse fixedTop>

        <Navbar.Header>

          <Navbar.Brand>

            <a onClick={this.onClickHome} href="/">IRI Notes</a>

          </Navbar.Brand>

          <Navbar.Toggle />

        </Navbar.Header>

        <Navbar.Collapse>

          <Nav>

            <NavItem onClick={this.onClickSessions} href="/sessions">Sessions</NavItem>

          </Nav>

          <Nav pullRight>

            <GroupStatus currentGroup={this.props.currentGroup} groups={this.props.groups} onSelect={this.onGroupSelect}/>

            <SyncButton id='sync-button' onSyncClick={this.onSyncClick} isSynchronizing={this.props.isSynchronizing} isSynchronized={this.props.isSynchronized} />

            <Online {...this.props} />

            <LoginNav {...this.props} onLogout={this.onClickLogout} />

          </Nav>

        </Navbar.Collapse>

        <Modal show={this.state.showModal} onHide={this.closeModal}>

          <Modal.Body>

            <p className="text-center">

              Some data is not synchronized with server.

              <br />

              If you continue, it will be lost.

            </p>

          </Modal.Body>

          <Modal.Footer>

            <Button bsStyle="primary" onClick={this.confirmLogout}>Confirm</Button>

            <Button onClick={this.closeModal}>Close</Button>

          </Modal.Footer>

        </Modal>

      </Navbar>

    );

  }

}

AppNavbar.propTypes = {

  isAuthenticated: PropTypes.bool.isRequired

};

function mapStateToProps(state, props) {

  return {

    isAuthenticated: isAuthenticated(state),

    currentUser: getCurrentUser(state),

    online: getOnline(state),

    isSynchronizing: isSynchronizing(state),

    isSynchronized: isSynchronized(state),

    currentGroup: getCurrentGroup(state),

    groups: getGroups(state)

  };

}

function mapDispatchToProps(dispatch) {

  return {

    authActions: bindActionCreators(authActions, dispatch),

    networkActions: bindActionCreators({ forceSync }, dispatch),

    groupActions: bindActionCreators({ groupSetCurrent }, dispatch)

  }

}

export default connect(mapStateToProps, mapDispatchToProps)(withRouter(AppNavbar));