/*
 * Minio Cloud Storage (C) 2016 Minio, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import React from 'react'
import classNames from 'classnames'
import logo from '../../img/logo.svg'
import Alert from 'react-bootstrap/lib/Alert'
import * as actions from '../actions'
import InputGroup from '../components/InputGroup'

export default class Login extends React.Component {
  handleSubmit(event) {
    event.preventDefault()
    const {web, dispatch, loginRedirectPath} = this.props
    let message = ''
    if (!document.getElementById('accessKey').value) {
      message = 'Secret Key cannot be empty'
    }
    if (!document.getElementById('secretKey').value) {
      message = 'Access Key cannot be empty'
    }
    if (message) {
      dispatch(actions.showAlert({
        type: 'danger',
        message
      }))
      return
    }
    web.Login({
      username: document.getElementById('accessKey').value,
      password: document.getElementById('secretKey').value
    })
      .then((res) => {
        this.context.router.push(loginRedirectPath)
      })
      .catch(e => {
        dispatch(actions.setLoginError())
        dispatch(actions.showAlert({
          type: 'danger',
          message: e.message
        }))
      })
  }

  componentWillMount() {
    const {dispatch} = this.props
    // Clear out any stale message in the alert of previous page
    dispatch(actions.showAlert({
      type: 'danger',
      message: ''
    }))
    document.body.classList.add('is-guest')
  }

  componentWillUnmount() {
    document.body.classList.remove('is-guest')
  }

  hideAlert() {
    const {dispatch} = this.props
    dispatch(actions.hideAlert())
  }

  render() {
    const {alert} = this.props
    let alertBox = <Alert className={ 'alert animated ' + (alert.show ? 'fadeInDown' : 'fadeOutUp') } bsStyle={ alert.type } onDismiss={ this.hideAlert.bind(this) }>
                     <div className='text-center'>
                       { alert.message }
                     </div>
                   </Alert>
    // Make sure you don't show a fading out alert box on the initial web-page load.
    if (!alert.message)
      alertBox = ''
    return (
      <div className="login">
        { alertBox }
        <div className="l-wrap">
          <form onSubmit={ this.handleSubmit.bind(this) }>
            <InputGroup className="ig-dark"
              label="Access Key"
              id="accessKey"
              name="username"
              type="text"
              spellCheck="false"
              required="required"
              autoComplete="username">
            </InputGroup>
            <InputGroup className="ig-dark"
              label="Secret Key"
              id="secretKey"
              name="password"
              type="password"
              spellCheck="false"
              required="required"
              autoComplete="new-password">
            </InputGroup>
            <button className="lw-btn" type="submit">
              <i className="fa fa-sign-in"></i>
            </button>
          </form>
        </div>
        <div className="l-footer">
          <a className="lf-logo" href=""><img src={ logo } alt="" /></a>
          <div className="lf-server">
            { window.location.host }
          </div>
        </div>
      </div>
    )
  }
}

Login.contextTypes = {
  router: React.PropTypes.object.isRequired
}